hg4j: src/org/tmatesoft/hg/internal/RevlogStream.java annotate

annotate src/org/tmatesoft/hg/internal/RevlogStream.java @ 607:66f1cc23b906

Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository

author	Artem Tikhomirov <tikhomirov.artem@gmail.com>
date	Tue, 07 May 2013 16:52:46 +0200
parents	5daa42067e7c
children	e1b29756f901

rev	line source
10 382cfe9463db Dirstate parsing. DataAccess refactored to allow reuse and control over constants Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 9 diff changeset	1 /*
530 0f6fa88e2162 Towards commit command: refactor clone, extract pieces to reuse. Describe a defect discovered when bundle has few patches with 0,0 parents Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 520 diff changeset	2 * Copyright (c) 2010-2013 TMate Software Ltd
74 6f1b88693d48 Complete refactoring to org.tmatesoft Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 52 diff changeset	3 *
6f1b88693d48 Complete refactoring to org.tmatesoft Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 52 diff changeset	4 * This program is free software; you can redistribute it and/or modify
6f1b88693d48 Complete refactoring to org.tmatesoft Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 52 diff changeset	5 * it under the terms of the GNU General Public License as published by
6f1b88693d48 Complete refactoring to org.tmatesoft Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 52 diff changeset	6 * the Free Software Foundation; version 2 of the License.
6f1b88693d48 Complete refactoring to org.tmatesoft Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 52 diff changeset	7 *
6f1b88693d48 Complete refactoring to org.tmatesoft Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 52 diff changeset	8 * This program is distributed in the hope that it will be useful,
6f1b88693d48 Complete refactoring to org.tmatesoft Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 52 diff changeset	9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
6f1b88693d48 Complete refactoring to org.tmatesoft Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 52 diff changeset	10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
6f1b88693d48 Complete refactoring to org.tmatesoft Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 52 diff changeset	11 * GNU General Public License for more details.
6f1b88693d48 Complete refactoring to org.tmatesoft Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 52 diff changeset	12 *
6f1b88693d48 Complete refactoring to org.tmatesoft Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 52 diff changeset	13 * For information on how to redistribute this software under
6f1b88693d48 Complete refactoring to org.tmatesoft Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 52 diff changeset	14 * the terms of a license other than GNU General Public License
102 a3a2e5deb320 Updated contact address to support@hg4j.com Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 88 diff changeset	15 * contact TMate Software at support@hg4j.com
0 dbd663faec1f Basic changelog parsing Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: diff changeset	16 */
77 c677e1593919 Moved RevlogStream implementation into .internal Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 74 diff changeset	17 package org.tmatesoft.hg.internal;
0 dbd663faec1f Basic changelog parsing Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: diff changeset	18
80 4222b04f34ee Follow history of a file Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 77 diff changeset	19 import static org.tmatesoft.hg.repo.HgRepository.BAD_REVISION;
74 6f1b88693d48 Complete refactoring to org.tmatesoft Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 52 diff changeset	20 import static org.tmatesoft.hg.repo.HgRepository.TIP;
530 0f6fa88e2162 Towards commit command: refactor clone, extract pieces to reuse. Describe a defect discovered when bundle has few patches with 0,0 parents Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 520 diff changeset	21 import static org.tmatesoft.hg.internal.Internals.REVLOGV1_RECORD_SIZE;
5 fc265ddeab26 File content and non-effective, although working, patch application Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 4 diff changeset	22
3 24bb4f365164 Rudimentary log functionality with basic infrastructure is in place Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 2 diff changeset	23 import java.io.File;
2 08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	24 import java.io.IOException;
593 9619301a7bb9 Share last revision read between #iterate() invocations, to save revision rebuild efforts when few subsequent revisions are read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 585 diff changeset	25 import java.lang.ref.Reference;
9619301a7bb9 Share last revision read between #iterate() invocations, to save revision rebuild efforts when few subsequent revisions are read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 585 diff changeset	26 import java.lang.ref.ReferenceQueue;
9619301a7bb9 Share last revision read between #iterate() invocations, to save revision rebuild efforts when few subsequent revisions are read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 585 diff changeset	27 import java.lang.ref.SoftReference;
607 66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	28 import java.util.ArrayList;
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	29 import java.util.List;
263 31f67be94e71 RevlogStream - reduce number of object instances, reuse when possible Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 258 diff changeset	30 import java.util.zip.Inflater;
0 dbd663faec1f Basic changelog parsing Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: diff changeset	31
74 6f1b88693d48 Complete refactoring to org.tmatesoft Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 52 diff changeset	32 import org.tmatesoft.hg.core.Nodeid;
300 650b45d290b1 Share range check code Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 297 diff changeset	33 import org.tmatesoft.hg.repo.HgInternals;
423 9c9c442b5f2e Major refactoring of exception handling. Low-level API uses RuntimeExceptions, while checked are left for higher level Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 420 diff changeset	34 import org.tmatesoft.hg.repo.HgInvalidControlFileException;
9c9c442b5f2e Major refactoring of exception handling. Low-level API uses RuntimeExceptions, while checked are left for higher level Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 420 diff changeset	35 import org.tmatesoft.hg.repo.HgInvalidRevisionException;
9c9c442b5f2e Major refactoring of exception handling. Low-level API uses RuntimeExceptions, while checked are left for higher level Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 420 diff changeset	36 import org.tmatesoft.hg.repo.HgInvalidStateException;
80 4222b04f34ee Follow history of a file Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 77 diff changeset	37 import org.tmatesoft.hg.repo.HgRepository;
520 1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 440 diff changeset	38 import org.tmatesoft.hg.util.Adaptable;
74 6f1b88693d48 Complete refactoring to org.tmatesoft Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 52 diff changeset	39
10 382cfe9463db Dirstate parsing. DataAccess refactored to allow reuse and control over constants Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 9 diff changeset	40
0 dbd663faec1f Basic changelog parsing Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: diff changeset	41 /**
dbd663faec1f Basic changelog parsing Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: diff changeset	42 * ? Single RevlogStream per file per repository with accessor to record access session (e.g. with back/forward operations),
198 33a7d76f067b Performance optimization: reduce memory to keep revlog cached info Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 170 diff changeset	43 * or numerous RevlogStream with separate representation of the underlying data (cached, lazy ChunkStream)?
74 6f1b88693d48 Complete refactoring to org.tmatesoft Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 52 diff changeset	44 *
0 dbd663faec1f Basic changelog parsing Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: diff changeset	45 * @see http://mercurial.selenic.com/wiki/Revlog
dbd663faec1f Basic changelog parsing Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: diff changeset	46 * @see http://mercurial.selenic.com/wiki/RevlogNG
74 6f1b88693d48 Complete refactoring to org.tmatesoft Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 52 diff changeset	47 *
6f1b88693d48 Complete refactoring to org.tmatesoft Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 52 diff changeset	48 * @author Artem Tikhomirov
6f1b88693d48 Complete refactoring to org.tmatesoft Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 52 diff changeset	49 * @author TMate Software Ltd.
0 dbd663faec1f Basic changelog parsing Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: diff changeset	50 */
dbd663faec1f Basic changelog parsing Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: diff changeset	51 public class RevlogStream {
2 08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	52
198 33a7d76f067b Performance optimization: reduce memory to keep revlog cached info Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 170 diff changeset	53 /*
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 170 diff changeset	54 * makes sense for index with inline data only - actual offset of the record in the .i file (record entry + revision * record size))
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 170 diff changeset	55 *
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 170 diff changeset	56 * long[] in fact (there are 8-bytes field in the revlog)
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 170 diff changeset	57 * However, (a) DataAccess currently doesn't operate with long seek/length
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 170 diff changeset	58 * and, of greater significance, (b) files with inlined data are designated for smaller files,
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 170 diff changeset	59 * guess, about 130 Kb, and offset there won't ever break int capacity
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 170 diff changeset	60 */
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 170 diff changeset	61 private int[] indexRecordOffset;
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 170 diff changeset	62 private int[] baseRevisions;
2 08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	63 private boolean inline = false;
3 24bb4f365164 Rudimentary log functionality with basic infrastructure is in place Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 2 diff changeset	64 private final File indexFile;
396 0ae53c32ecef Straighten out exceptions thrown when file access failed - three is too much Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 377 diff changeset	65 private File dataFile;
10 382cfe9463db Dirstate parsing. DataAccess refactored to allow reuse and control over constants Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 9 diff changeset	66 private final DataAccessProvider dataAccess;
593 9619301a7bb9 Share last revision read between #iterate() invocations, to save revision rebuild efforts when few subsequent revisions are read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 585 diff changeset	67 // keeps last complete revision we've read. Note, this cached revision doesn't help
9619301a7bb9 Share last revision read between #iterate() invocations, to save revision rebuild efforts when few subsequent revisions are read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 585 diff changeset	68 // for subsequent #iterate() calls with the same revision (Inspector needs more data than
9619301a7bb9 Share last revision read between #iterate() invocations, to save revision rebuild efforts when few subsequent revisions are read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 585 diff changeset	69 // we currently cache here, perhaps, we shall cache everything it wants to cover same
9619301a7bb9 Share last revision read between #iterate() invocations, to save revision rebuild efforts when few subsequent revisions are read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 585 diff changeset	70 // revision case as well). Now this helps when second #iterate() call is for a revision greater
9619301a7bb9 Share last revision read between #iterate() invocations, to save revision rebuild efforts when few subsequent revisions are read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 585 diff changeset	71 // than one from the first call, and both revisions got same base rev. It's often the case when
9619301a7bb9 Share last revision read between #iterate() invocations, to save revision rebuild efforts when few subsequent revisions are read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 585 diff changeset	72 // parents/children are analyzed.
9619301a7bb9 Share last revision read between #iterate() invocations, to save revision rebuild efforts when few subsequent revisions are read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 585 diff changeset	73 private SoftReference<CachedRevision> lastRevisionRead;
9619301a7bb9 Share last revision read between #iterate() invocations, to save revision rebuild efforts when few subsequent revisions are read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 585 diff changeset	74 private final ReferenceQueue<CachedRevision> lastRevisionQueue = new ReferenceQueue<CachedRevision>();
607 66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	75 //
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	76 private final RevlogChangeMonitor changeTracker;
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	77 private List<Observer> observers;
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	78 private boolean shallDropDerivedCaches = false;
3 24bb4f365164 Rudimentary log functionality with basic infrastructure is in place Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 2 diff changeset	79
10 382cfe9463db Dirstate parsing. DataAccess refactored to allow reuse and control over constants Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 9 diff changeset	80 // if we need anything else from HgRepo, might replace DAP parameter with HgRepo and query it for DAP.
77 c677e1593919 Moved RevlogStream implementation into .internal Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 74 diff changeset	81 public RevlogStream(DataAccessProvider dap, File indexFile) {
10 382cfe9463db Dirstate parsing. DataAccess refactored to allow reuse and control over constants Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 9 diff changeset	82 this.dataAccess = dap;
3 24bb4f365164 Rudimentary log functionality with basic infrastructure is in place Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 2 diff changeset	83 this.indexFile = indexFile;
607 66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	84 // TODO in fact, shall ask Internals for an instance (there we'll decide whether to use
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	85 // one monitor per multiple files or an instance per file; and let SessionContext pass
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	86 // alternative implementation)
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	87 changeTracker = new RevlogChangeMonitor(indexFile);
3 24bb4f365164 Rudimentary log functionality with basic infrastructure is in place Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 2 diff changeset	88 }
2 08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	89
606 5daa42067e7c Avoid mmap files when only few bytes are to be read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 594 diff changeset	90 /**
5daa42067e7c Avoid mmap files when only few bytes are to be read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 594 diff changeset	91 * @param shortRead pass <code>true</code> to indicate intention to read few revisions only (as opposed to reading most of/complete revlog)
5daa42067e7c Avoid mmap files when only few bytes are to be read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 594 diff changeset	92 * @return never <code>null</code>, empty {@link DataAccess} if no stream is available
5daa42067e7c Avoid mmap files when only few bytes are to be read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 594 diff changeset	93 */
5daa42067e7c Avoid mmap files when only few bytes are to be read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 594 diff changeset	94 /package/ DataAccess getIndexStream(boolean shortRead) {
5daa42067e7c Avoid mmap files when only few bytes are to be read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 594 diff changeset	95 // shortRead hint helps to avoid mmap files when only
5daa42067e7c Avoid mmap files when only few bytes are to be read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 594 diff changeset	96 // few bytes are to be read (i.e. #dataLength())
5daa42067e7c Avoid mmap files when only few bytes are to be read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 594 diff changeset	97 return dataAccess.createReader(indexFile, shortRead);
0 dbd663faec1f Basic changelog parsing Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: diff changeset	98 }
dbd663faec1f Basic changelog parsing Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: diff changeset	99
9 d6d2a630f4a6 Access to underlaying file data wrapped into own Access object, implemented with FileChannel and ByteBuffer Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 6 diff changeset	100 /package/ DataAccess getDataStream() {
606 5daa42067e7c Avoid mmap files when only few bytes are to be read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 594 diff changeset	101 return dataAccess.createReader(getDataFile(), false);
534 243202f1bda5 Commit: refactor revision creation code from clone command to work separately, fit into existing library structure Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 530 diff changeset	102 }
243202f1bda5 Commit: refactor revision creation code from clone command to work separately, fit into existing library structure Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 530 diff changeset	103
243202f1bda5 Commit: refactor revision creation code from clone command to work separately, fit into existing library structure Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 530 diff changeset	104 /package/ DataSerializer getIndexStreamWriter() {
243202f1bda5 Commit: refactor revision creation code from clone command to work separately, fit into existing library structure Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 530 diff changeset	105 return dataAccess.createWriter(indexFile, true);
243202f1bda5 Commit: refactor revision creation code from clone command to work separately, fit into existing library structure Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 530 diff changeset	106 }
243202f1bda5 Commit: refactor revision creation code from clone command to work separately, fit into existing library structure Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 530 diff changeset	107
243202f1bda5 Commit: refactor revision creation code from clone command to work separately, fit into existing library structure Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 530 diff changeset	108 /package/ DataSerializer getDataStreamWriter() {
243202f1bda5 Commit: refactor revision creation code from clone command to work separately, fit into existing library structure Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 530 diff changeset	109 return dataAccess.createWriter(getDataFile(), true);
9 d6d2a630f4a6 Access to underlaying file data wrapped into own Access object, implemented with FileChannel and ByteBuffer Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 6 diff changeset	110 }
d6d2a630f4a6 Access to underlaying file data wrapped into own Access object, implemented with FileChannel and ByteBuffer Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 6 diff changeset	111
396 0ae53c32ecef Straighten out exceptions thrown when file access failed - three is too much Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 377 diff changeset	112 /**
0ae53c32ecef Straighten out exceptions thrown when file access failed - three is too much Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 377 diff changeset	113 * Constructs file object that corresponds to .d revlog counterpart.
0ae53c32ecef Straighten out exceptions thrown when file access failed - three is too much Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 377 diff changeset	114 * Note, it's caller responsibility to ensure this file makes any sense (i.e. check {@link #inline} attribute)
0ae53c32ecef Straighten out exceptions thrown when file access failed - three is too much Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 377 diff changeset	115 */
0ae53c32ecef Straighten out exceptions thrown when file access failed - three is too much Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 377 diff changeset	116 private File getDataFile() {
0ae53c32ecef Straighten out exceptions thrown when file access failed - three is too much Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 377 diff changeset	117 if (dataFile == null) {
0ae53c32ecef Straighten out exceptions thrown when file access failed - three is too much Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 377 diff changeset	118 final String indexName = indexFile.getName();
0ae53c32ecef Straighten out exceptions thrown when file access failed - three is too much Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 377 diff changeset	119 dataFile = new File(indexFile.getParentFile(), indexName.substring(0, indexName.length() - 1) + "d");
0ae53c32ecef Straighten out exceptions thrown when file access failed - three is too much Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 377 diff changeset	120 }
0ae53c32ecef Straighten out exceptions thrown when file access failed - three is too much Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 377 diff changeset	121 return dataFile;
0ae53c32ecef Straighten out exceptions thrown when file access failed - three is too much Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 377 diff changeset	122 }
0ae53c32ecef Straighten out exceptions thrown when file access failed - three is too much Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 377 diff changeset	123
0ae53c32ecef Straighten out exceptions thrown when file access failed - three is too much Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 377 diff changeset	124 // initialize exception with the file where revlog structure information comes from
0ae53c32ecef Straighten out exceptions thrown when file access failed - three is too much Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 377 diff changeset	125 public HgInvalidControlFileException initWithIndexFile(HgInvalidControlFileException ex) {
0ae53c32ecef Straighten out exceptions thrown when file access failed - three is too much Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 377 diff changeset	126 return ex.setFile(indexFile);
0ae53c32ecef Straighten out exceptions thrown when file access failed - three is too much Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 377 diff changeset	127 }
0ae53c32ecef Straighten out exceptions thrown when file access failed - three is too much Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 377 diff changeset	128
0ae53c32ecef Straighten out exceptions thrown when file access failed - three is too much Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 377 diff changeset	129 // initialize exception with the file where revlog data comes from
0ae53c32ecef Straighten out exceptions thrown when file access failed - three is too much Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 377 diff changeset	130 public HgInvalidControlFileException initWithDataFile(HgInvalidControlFileException ex) {
0ae53c32ecef Straighten out exceptions thrown when file access failed - three is too much Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 377 diff changeset	131 // exceptions are usually raised after read attepmt, hence inline shall be initialized
0ae53c32ecef Straighten out exceptions thrown when file access failed - three is too much Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 377 diff changeset	132 // although honest approach is to call #initOutline() first
0ae53c32ecef Straighten out exceptions thrown when file access failed - three is too much Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 377 diff changeset	133 return ex.setFile(inline ? indexFile : getDataFile());
0ae53c32ecef Straighten out exceptions thrown when file access failed - three is too much Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 377 diff changeset	134 }
534 243202f1bda5 Commit: refactor revision creation code from clone command to work separately, fit into existing library structure Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 530 diff changeset	135
243202f1bda5 Commit: refactor revision creation code from clone command to work separately, fit into existing library structure Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 530 diff changeset	136 /package-private/String getDataFileName() {
243202f1bda5 Commit: refactor revision creation code from clone command to work separately, fit into existing library structure Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 530 diff changeset	137 // XXX a temporary solution to provide more info to fill in exceptions other than
243202f1bda5 Commit: refactor revision creation code from clone command to work separately, fit into existing library structure Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 530 diff changeset	138 // HgInvalidControlFileException (those benefit from initWith* methods above)
243202f1bda5 Commit: refactor revision creation code from clone command to work separately, fit into existing library structure Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 530 diff changeset	139 //
243202f1bda5 Commit: refactor revision creation code from clone command to work separately, fit into existing library structure Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 530 diff changeset	140 // Besides, since RevlogStream represents both revlogs with user data (those with WC representative and
243202f1bda5 Commit: refactor revision creation code from clone command to work separately, fit into existing library structure Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 530 diff changeset	141 // system data under store/data) and system-only revlogs (like changelog and manifest), there's no
243202f1bda5 Commit: refactor revision creation code from clone command to work separately, fit into existing library structure Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 530 diff changeset	142 // easy way to supply human-friendly name of the active file (independent from whether it's index of data)
243202f1bda5 Commit: refactor revision creation code from clone command to work separately, fit into existing library structure Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 530 diff changeset	143 return inline ? indexFile.getPath() : getDataFile().getPath();
243202f1bda5 Commit: refactor revision creation code from clone command to work separately, fit into existing library structure Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 530 diff changeset	144 }
396 0ae53c32ecef Straighten out exceptions thrown when file access failed - three is too much Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 377 diff changeset	145
534 243202f1bda5 Commit: refactor revision creation code from clone command to work separately, fit into existing library structure Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 530 diff changeset	146 public boolean isInlineData() {
243202f1bda5 Commit: refactor revision creation code from clone command to work separately, fit into existing library structure Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 530 diff changeset	147 initOutline();
243202f1bda5 Commit: refactor revision creation code from clone command to work separately, fit into existing library structure Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 530 diff changeset	148 return inline;
243202f1bda5 Commit: refactor revision creation code from clone command to work separately, fit into existing library structure Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 530 diff changeset	149 }
396 0ae53c32ecef Straighten out exceptions thrown when file access failed - three is too much Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 377 diff changeset	150
2 08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	151 public int revisionCount() {
08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	152 initOutline();
198 33a7d76f067b Performance optimization: reduce memory to keep revlog cached info Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 170 diff changeset	153 return baseRevisions.length;
2 08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	154 }
22 603806cd2dc6 Status of local working dir against non-tip base revision Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 10 diff changeset	155
295 981f9f50bb6c Issue 11: Error log facility. SessionContext to share common facilities Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 288 diff changeset	156 /**
354 5f9073eabf06 Propagate errors with exceptions up to a end client Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 347 diff changeset	157 * @throws HgInvalidControlFileException if attempt to read index file failed
5f9073eabf06 Propagate errors with exceptions up to a end client Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 347 diff changeset	158 * @throws HgInvalidRevisionException if revisionIndex argument doesn't represent a valid record in the revlog
295 981f9f50bb6c Issue 11: Error log facility. SessionContext to share common facilities Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 288 diff changeset	159 */
354 5f9073eabf06 Propagate errors with exceptions up to a end client Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 347 diff changeset	160 public int dataLength(int revisionIndex) throws HgInvalidControlFileException, HgInvalidRevisionException {
22 603806cd2dc6 Status of local working dir against non-tip base revision Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 10 diff changeset	161 // XXX in fact, use of iterate() instead of this implementation may be quite reasonable.
603806cd2dc6 Status of local working dir against non-tip base revision Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 10 diff changeset	162 //
354 5f9073eabf06 Propagate errors with exceptions up to a end client Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 347 diff changeset	163 revisionIndex = checkRevisionIndex(revisionIndex);
606 5daa42067e7c Avoid mmap files when only few bytes are to be read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 594 diff changeset	164 DataAccess daIndex = getIndexStream(true);
22 603806cd2dc6 Status of local working dir against non-tip base revision Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 10 diff changeset	165 try {
354 5f9073eabf06 Propagate errors with exceptions up to a end client Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 347 diff changeset	166 int recordOffset = getIndexOffsetInt(revisionIndex);
22 603806cd2dc6 Status of local working dir against non-tip base revision Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 10 diff changeset	167 daIndex.seek(recordOffset + 12); // 6+2+4
603806cd2dc6 Status of local working dir against non-tip base revision Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 10 diff changeset	168 int actualLen = daIndex.readInt();
603806cd2dc6 Status of local working dir against non-tip base revision Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 10 diff changeset	169 return actualLen;
603806cd2dc6 Status of local working dir against non-tip base revision Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 10 diff changeset	170 } catch (IOException ex) {
440 299870249a28 Issue 30: bogus IOException for mmap file on linux Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 425 diff changeset	171 throw new HgInvalidControlFileException(null, ex, indexFile).setRevisionIndex(revisionIndex);
22 603806cd2dc6 Status of local working dir against non-tip base revision Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 10 diff changeset	172 } finally {
603806cd2dc6 Status of local working dir against non-tip base revision Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 10 diff changeset	173 daIndex.done();
603806cd2dc6 Status of local working dir against non-tip base revision Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 10 diff changeset	174 }
603806cd2dc6 Status of local working dir against non-tip base revision Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 10 diff changeset	175 }
603806cd2dc6 Status of local working dir against non-tip base revision Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 10 diff changeset	176
295 981f9f50bb6c Issue 11: Error log facility. SessionContext to share common facilities Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 288 diff changeset	177 /**
354 5f9073eabf06 Propagate errors with exceptions up to a end client Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 347 diff changeset	178 * Read nodeid at given index
5f9073eabf06 Propagate errors with exceptions up to a end client Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 347 diff changeset	179 *
5f9073eabf06 Propagate errors with exceptions up to a end client Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 347 diff changeset	180 * @throws HgInvalidControlFileException if attempt to read index file failed
5f9073eabf06 Propagate errors with exceptions up to a end client Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 347 diff changeset	181 * @throws HgInvalidRevisionException if revisionIndex argument doesn't represent a valid record in the revlog
295 981f9f50bb6c Issue 11: Error log facility. SessionContext to share common facilities Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 288 diff changeset	182 */
354 5f9073eabf06 Propagate errors with exceptions up to a end client Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 347 diff changeset	183 public byte[] nodeid(int revisionIndex) throws HgInvalidControlFileException, HgInvalidRevisionException {
5f9073eabf06 Propagate errors with exceptions up to a end client Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 347 diff changeset	184 revisionIndex = checkRevisionIndex(revisionIndex);
606 5daa42067e7c Avoid mmap files when only few bytes are to be read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 594 diff changeset	185 DataAccess daIndex = getIndexStream(true);
80 4222b04f34ee Follow history of a file Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 77 diff changeset	186 try {
354 5f9073eabf06 Propagate errors with exceptions up to a end client Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 347 diff changeset	187 int recordOffset = getIndexOffsetInt(revisionIndex);
80 4222b04f34ee Follow history of a file Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 77 diff changeset	188 daIndex.seek(recordOffset + 32);
4222b04f34ee Follow history of a file Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 77 diff changeset	189 byte[] rv = new byte[20];
4222b04f34ee Follow history of a file Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 77 diff changeset	190 daIndex.readBytes(rv, 0, 20);
4222b04f34ee Follow history of a file Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 77 diff changeset	191 return rv;
4222b04f34ee Follow history of a file Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 77 diff changeset	192 } catch (IOException ex) {
440 299870249a28 Issue 30: bogus IOException for mmap file on linux Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 425 diff changeset	193 throw new HgInvalidControlFileException("Revision lookup failed", ex, indexFile).setRevisionIndex(revisionIndex);
80 4222b04f34ee Follow history of a file Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 77 diff changeset	194 } finally {
88 61eedab3eb3e Status between two revisions to recognize copy/rename Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 80 diff changeset	195 daIndex.done();
61eedab3eb3e Status between two revisions to recognize copy/rename Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 80 diff changeset	196 }
61eedab3eb3e Status between two revisions to recognize copy/rename Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 80 diff changeset	197 }
295 981f9f50bb6c Issue 11: Error log facility. SessionContext to share common facilities Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 288 diff changeset	198
981f9f50bb6c Issue 11: Error log facility. SessionContext to share common facilities Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 288 diff changeset	199 /**
981f9f50bb6c Issue 11: Error log facility. SessionContext to share common facilities Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 288 diff changeset	200 * Get link field from the index record.
354 5f9073eabf06 Propagate errors with exceptions up to a end client Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 347 diff changeset	201 *
5f9073eabf06 Propagate errors with exceptions up to a end client Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 347 diff changeset	202 * @throws HgInvalidControlFileException if attempt to read index file failed
5f9073eabf06 Propagate errors with exceptions up to a end client Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 347 diff changeset	203 * @throws HgInvalidRevisionException if revisionIndex argument doesn't represent a valid record in the revlog
295 981f9f50bb6c Issue 11: Error log facility. SessionContext to share common facilities Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 288 diff changeset	204 */
354 5f9073eabf06 Propagate errors with exceptions up to a end client Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 347 diff changeset	205 public int linkRevision(int revisionIndex) throws HgInvalidControlFileException, HgInvalidRevisionException {
5f9073eabf06 Propagate errors with exceptions up to a end client Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 347 diff changeset	206 revisionIndex = checkRevisionIndex(revisionIndex);
606 5daa42067e7c Avoid mmap files when only few bytes are to be read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 594 diff changeset	207 DataAccess daIndex = getIndexStream(true);
88 61eedab3eb3e Status between two revisions to recognize copy/rename Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 80 diff changeset	208 try {
354 5f9073eabf06 Propagate errors with exceptions up to a end client Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 347 diff changeset	209 int recordOffset = getIndexOffsetInt(revisionIndex);
88 61eedab3eb3e Status between two revisions to recognize copy/rename Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 80 diff changeset	210 daIndex.seek(recordOffset + 20);
61eedab3eb3e Status between two revisions to recognize copy/rename Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 80 diff changeset	211 int linkRev = daIndex.readInt();
61eedab3eb3e Status between two revisions to recognize copy/rename Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 80 diff changeset	212 return linkRev;
61eedab3eb3e Status between two revisions to recognize copy/rename Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 80 diff changeset	213 } catch (IOException ex) {
440 299870249a28 Issue 30: bogus IOException for mmap file on linux Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 425 diff changeset	214 throw new HgInvalidControlFileException("Linked revision lookup failed", ex, indexFile).setRevisionIndex(revisionIndex);
88 61eedab3eb3e Status between two revisions to recognize copy/rename Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 80 diff changeset	215 } finally {
61eedab3eb3e Status between two revisions to recognize copy/rename Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 80 diff changeset	216 daIndex.done();
80 4222b04f34ee Follow history of a file Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 77 diff changeset	217 }
4222b04f34ee Follow history of a file Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 77 diff changeset	218 }
4222b04f34ee Follow history of a file Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 77 diff changeset	219
585 b47ef0d2777b Access to base revision filed comes handy for debug sometimes Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 584 diff changeset	220 /**
b47ef0d2777b Access to base revision filed comes handy for debug sometimes Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 584 diff changeset	221 * Extract base revision field from the revlog
b47ef0d2777b Access to base revision filed comes handy for debug sometimes Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 584 diff changeset	222 *
b47ef0d2777b Access to base revision filed comes handy for debug sometimes Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 584 diff changeset	223 * @throws HgInvalidControlFileException if attempt to read index file failed
b47ef0d2777b Access to base revision filed comes handy for debug sometimes Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 584 diff changeset	224 * @throws HgInvalidRevisionException if revisionIndex argument doesn't represent a valid record in the revlog
b47ef0d2777b Access to base revision filed comes handy for debug sometimes Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 584 diff changeset	225 */
b47ef0d2777b Access to base revision filed comes handy for debug sometimes Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 584 diff changeset	226 public int baseRevision(int revisionIndex) throws HgInvalidControlFileException, HgInvalidRevisionException {
b47ef0d2777b Access to base revision filed comes handy for debug sometimes Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 584 diff changeset	227 revisionIndex = checkRevisionIndex(revisionIndex);
b47ef0d2777b Access to base revision filed comes handy for debug sometimes Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 584 diff changeset	228 return getBaseRevision(revisionIndex);
b47ef0d2777b Access to base revision filed comes handy for debug sometimes Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 584 diff changeset	229 }
b47ef0d2777b Access to base revision filed comes handy for debug sometimes Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 584 diff changeset	230
49 26e3eeaa3962 branch and user filtering for log operation Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 44 diff changeset	231 // Perhaps, RevlogStream should be limited to use of plain int revisions for access,
26e3eeaa3962 branch and user filtering for log operation Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 44 diff changeset	232 // while Nodeids should be kept on the level up, in Revlog. Guess, Revlog better keep
26e3eeaa3962 branch and user filtering for log operation Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 44 diff changeset	233 // map of nodeids, and once this comes true, we may get rid of this method.
80 4222b04f34ee Follow history of a file Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 77 diff changeset	234 // Unlike its counterpart, {@link Revlog#getLocalRevisionNumber()}, doesn't fail with exception if node not found,
4222b04f34ee Follow history of a file Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 77 diff changeset	235 /**
4222b04f34ee Follow history of a file Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 77 diff changeset	236 * @return integer in [0..revisionCount()) or {@link HgRepository#BAD_REVISION} if not found
354 5f9073eabf06 Propagate errors with exceptions up to a end client Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 347 diff changeset	237 * @throws HgInvalidControlFileException if attempt to read index file failed
80 4222b04f34ee Follow history of a file Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 77 diff changeset	238 */
367 2fadf8695f8a Use 'revision index' instead of the vague 'local revision number' concept in the API Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 366 diff changeset	239 public int findRevisionIndex(Nodeid nodeid) throws HgInvalidControlFileException {
22 603806cd2dc6 Status of local working dir against non-tip base revision Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 10 diff changeset	240 // XXX this one may be implemented with iterate() once there's mechanism to stop iterations
603806cd2dc6 Status of local working dir against non-tip base revision Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 10 diff changeset	241 final int indexSize = revisionCount();
606 5daa42067e7c Avoid mmap files when only few bytes are to be read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 594 diff changeset	242 DataAccess daIndex = getIndexStream(false);
22 603806cd2dc6 Status of local working dir against non-tip base revision Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 10 diff changeset	243 try {
24 d4fdd1845b3f Nodeid with array of exactly 20 bytes Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 22 diff changeset	244 byte[] nodeidBuf = new byte[20];
22 603806cd2dc6 Status of local working dir against non-tip base revision Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 10 diff changeset	245 for (int i = 0; i < indexSize; i++) {
603806cd2dc6 Status of local working dir against non-tip base revision Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 10 diff changeset	246 daIndex.skip(8);
603806cd2dc6 Status of local working dir against non-tip base revision Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 10 diff changeset	247 int compressedLen = daIndex.readInt();
603806cd2dc6 Status of local working dir against non-tip base revision Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 10 diff changeset	248 daIndex.skip(20);
24 d4fdd1845b3f Nodeid with array of exactly 20 bytes Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 22 diff changeset	249 daIndex.readBytes(nodeidBuf, 0, 20);
d4fdd1845b3f Nodeid with array of exactly 20 bytes Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 22 diff changeset	250 if (nodeid.equalsTo(nodeidBuf)) {
22 603806cd2dc6 Status of local working dir against non-tip base revision Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 10 diff changeset	251 return i;
603806cd2dc6 Status of local working dir against non-tip base revision Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 10 diff changeset	252 }
603806cd2dc6 Status of local working dir against non-tip base revision Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 10 diff changeset	253 daIndex.skip(inline ? 12 + compressedLen : 12);
603806cd2dc6 Status of local working dir against non-tip base revision Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 10 diff changeset	254 }
603806cd2dc6 Status of local working dir against non-tip base revision Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 10 diff changeset	255 } catch (IOException ex) {
440 299870249a28 Issue 30: bogus IOException for mmap file on linux Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 425 diff changeset	256 throw new HgInvalidControlFileException("Revision lookup failed", ex, indexFile).setRevision(nodeid);
22 603806cd2dc6 Status of local working dir against non-tip base revision Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 10 diff changeset	257 } finally {
603806cd2dc6 Status of local working dir against non-tip base revision Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 10 diff changeset	258 daIndex.done();
603806cd2dc6 Status of local working dir against non-tip base revision Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 10 diff changeset	259 }
80 4222b04f34ee Follow history of a file Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 77 diff changeset	260 return BAD_REVISION;
22 603806cd2dc6 Status of local working dir against non-tip base revision Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 10 diff changeset	261 }
538 dd4f6311af52 Commit: first working version Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 534 diff changeset	262
539 9edfd5a223b8 Commit: handle empty repository case Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 538 diff changeset	263 /**
9edfd5a223b8 Commit: handle empty repository case Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 538 diff changeset	264 * @return value suitable for the corresponding field in the new revision's header, not physical offset in the file
9edfd5a223b8 Commit: handle empty repository case Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 538 diff changeset	265 * (which is different in case of inline revlogs)
9edfd5a223b8 Commit: handle empty repository case Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 538 diff changeset	266 */
538 dd4f6311af52 Commit: first working version Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 534 diff changeset	267 public long newEntryOffset() {
dd4f6311af52 Commit: first working version Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 534 diff changeset	268 if (revisionCount() == 0) {
dd4f6311af52 Commit: first working version Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 534 diff changeset	269 return 0;
dd4f6311af52 Commit: first working version Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 534 diff changeset	270 }
606 5daa42067e7c Avoid mmap files when only few bytes are to be read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 594 diff changeset	271 DataAccess daIndex = getIndexStream(true);
538 dd4f6311af52 Commit: first working version Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 534 diff changeset	272 int lastRev = revisionCount() - 1;
dd4f6311af52 Commit: first working version Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 534 diff changeset	273 try {
dd4f6311af52 Commit: first working version Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 534 diff changeset	274 int recordOffset = getIndexOffsetInt(lastRev);
dd4f6311af52 Commit: first working version Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 534 diff changeset	275 daIndex.seek(recordOffset);
dd4f6311af52 Commit: first working version Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 534 diff changeset	276 long value = daIndex.readLong();
dd4f6311af52 Commit: first working version Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 534 diff changeset	277 value = value >>> 16;
dd4f6311af52 Commit: first working version Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 534 diff changeset	278 int compressedLen = daIndex.readInt();
dd4f6311af52 Commit: first working version Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 534 diff changeset	279 return lastRev == 0 ? compressedLen : value + compressedLen;
dd4f6311af52 Commit: first working version Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 534 diff changeset	280 } catch (IOException ex) {
dd4f6311af52 Commit: first working version Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 534 diff changeset	281 throw new HgInvalidControlFileException("Linked revision lookup failed", ex, indexFile).setRevisionIndex(lastRev);
dd4f6311af52 Commit: first working version Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 534 diff changeset	282 } finally {
dd4f6311af52 Commit: first working version Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 534 diff changeset	283 daIndex.done();
dd4f6311af52 Commit: first working version Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 534 diff changeset	284 }
dd4f6311af52 Commit: first working version Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 534 diff changeset	285 }
dd4f6311af52 Commit: first working version Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 534 diff changeset	286
3 24bb4f365164 Rudimentary log functionality with basic infrastructure is in place Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 2 diff changeset	287 // should be possible to use TIP, ALL, or -1, -2, -n notation of Hg
24bb4f365164 Rudimentary log functionality with basic infrastructure is in place Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 2 diff changeset	288 // ? boolean needsNodeid
423 9c9c442b5f2e Major refactoring of exception handling. Low-level API uses RuntimeExceptions, while checked are left for higher level Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 420 diff changeset	289 public void iterate(int start, int end, boolean needData, Inspector inspector) throws HgInvalidRevisionException, HgInvalidControlFileException {
2 08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	290 initOutline();
198 33a7d76f067b Performance optimization: reduce memory to keep revlog cached info Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 170 diff changeset	291 final int indexSize = revisionCount();
3 24bb4f365164 Rudimentary log functionality with basic infrastructure is in place Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 2 diff changeset	292 if (indexSize == 0) {
24bb4f365164 Rudimentary log functionality with basic infrastructure is in place Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 2 diff changeset	293 return;
24bb4f365164 Rudimentary log functionality with basic infrastructure is in place Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 2 diff changeset	294 }
5 fc265ddeab26 File content and non-effective, although working, patch application Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 4 diff changeset	295 if (end == TIP) {
3 24bb4f365164 Rudimentary log functionality with basic infrastructure is in place Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 2 diff changeset	296 end = indexSize - 1;
24bb4f365164 Rudimentary log functionality with basic infrastructure is in place Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 2 diff changeset	297 }
5 fc265ddeab26 File content and non-effective, although working, patch application Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 4 diff changeset	298 if (start == TIP) {
fc265ddeab26 File content and non-effective, although working, patch application Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 4 diff changeset	299 start = indexSize - 1;
fc265ddeab26 File content and non-effective, although working, patch application Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 4 diff changeset	300 }
300 650b45d290b1 Share range check code Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 297 diff changeset	301 HgInternals.checkRevlogRange(start, end, indexSize-1);
2 08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	302 // XXX may cache [start .. end] from index with a single read (pre-read)
08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	303
584 ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	304 ReaderN1 r = new ReaderN1(needData, inspector, dataAccess.shallMergePatches());
2 08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	305 try {
593 9619301a7bb9 Share last revision read between #iterate() invocations, to save revision rebuild efforts when few subsequent revisions are read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 585 diff changeset	306 r.start(end - start + 1, getLastRevisionRead());
242 ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	307 r.range(start, end);
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	308 } catch (IOException ex) {
366 189dc6dc1c3e Use exceptions to expose errors reading mercurial data Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 354 diff changeset	309 throw new HgInvalidControlFileException(String.format("Failed reading [%d..%d]", start, end), ex, indexFile);
189dc6dc1c3e Use exceptions to expose errors reading mercurial data Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 354 diff changeset	310 } catch (HgInvalidControlFileException ex) {
189dc6dc1c3e Use exceptions to expose errors reading mercurial data Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 354 diff changeset	311 throw ex;
242 ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	312 } finally {
593 9619301a7bb9 Share last revision read between #iterate() invocations, to save revision rebuild efforts when few subsequent revisions are read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 585 diff changeset	313 CachedRevision cr = r.finish();
9619301a7bb9 Share last revision read between #iterate() invocations, to save revision rebuild efforts when few subsequent revisions are read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 585 diff changeset	314 setLastRevisionRead(cr);
242 ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	315 }
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	316 }
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	317
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	318 /**
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	319 * Effective alternative to {@link #iterate(int, int, boolean, Inspector) batch read}, when only few selected
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	320 * revisions are of interest.
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	321 * @param sortedRevisions revisions to walk, in ascending order.
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	322 * @param needData whether inspector needs access to header only
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	323 * @param inspector callback to process entries
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	324 */
366 189dc6dc1c3e Use exceptions to expose errors reading mercurial data Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 354 diff changeset	325 public void iterate(int[] sortedRevisions, boolean needData, Inspector inspector) throws HgInvalidRevisionException, HgInvalidControlFileException /REVISIT - too general exception/ {
242 ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	326 final int indexSize = revisionCount();
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	327 if (indexSize == 0 \|\| sortedRevisions.length == 0) {
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	328 return;
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	329 }
347 8da7ade36c57 Add specific IAE subclass to handle wrong (e.g. outdated after rollback) revisions Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 329 diff changeset	330 if (sortedRevisions[0] > indexSize) {
8da7ade36c57 Add specific IAE subclass to handle wrong (e.g. outdated after rollback) revisions Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 329 diff changeset	331 throw new HgInvalidRevisionException(String.format("Can't iterate [%d, %d] in range [0..%d]", sortedRevisions[0], sortedRevisions[sortedRevisions.length - 1], indexSize), null, sortedRevisions[0]);
8da7ade36c57 Add specific IAE subclass to handle wrong (e.g. outdated after rollback) revisions Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 329 diff changeset	332 }
8da7ade36c57 Add specific IAE subclass to handle wrong (e.g. outdated after rollback) revisions Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 329 diff changeset	333 if (sortedRevisions[sortedRevisions.length - 1] > indexSize) {
8da7ade36c57 Add specific IAE subclass to handle wrong (e.g. outdated after rollback) revisions Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 329 diff changeset	334 throw new HgInvalidRevisionException(String.format("Can't iterate [%d, %d] in range [0..%d]", sortedRevisions[0], sortedRevisions[sortedRevisions.length - 1], indexSize), null, sortedRevisions[sortedRevisions.length - 1]);
242 ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	335 }
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	336
584 ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	337 ReaderN1 r = new ReaderN1(needData, inspector, dataAccess.shallMergePatches());
242 ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	338 try {
594 cc7b0c4dc993 Cache only in-memory revision representations Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 593 diff changeset	339 r.start(sortedRevisions.length, getLastRevisionRead());
242 ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	340 for (int i = 0; i < sortedRevisions.length; ) {
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	341 int x = i;
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	342 i++;
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	343 while (i < sortedRevisions.length) {
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	344 if (sortedRevisions[i] == sortedRevisions[i-1] + 1) {
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	345 i++;
2 08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	346 } else {
217 e39cf474ef94 Experimental support to mix-in start and end events for inspectors. Additionally, Lifecycle may serve as iteration control Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 202 diff changeset	347 break;
e39cf474ef94 Experimental support to mix-in start and end events for inspectors. Additionally, Lifecycle may serve as iteration control Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 202 diff changeset	348 }
e39cf474ef94 Experimental support to mix-in start and end events for inspectors. Additionally, Lifecycle may serve as iteration control Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 202 diff changeset	349 }
242 ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	350 // commitRevisions[x..i-1] are sequential
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	351 if (!r.range(sortedRevisions[x], sortedRevisions[i-1])) {
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	352 return;
51 9429c7bd1920 Try DataAccess to reach revision data instead of plain byte arrays Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 49 diff changeset	353 }
2 08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	354 }
08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	355 } catch (IOException ex) {
366 189dc6dc1c3e Use exceptions to expose errors reading mercurial data Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 354 diff changeset	356 final int c = sortedRevisions.length;
189dc6dc1c3e Use exceptions to expose errors reading mercurial data Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 354 diff changeset	357 throw new HgInvalidControlFileException(String.format("Failed reading %d revisions in [%d; %d]",c, sortedRevisions[0], sortedRevisions[c-1]), ex, indexFile);
189dc6dc1c3e Use exceptions to expose errors reading mercurial data Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 354 diff changeset	358 } catch (HgInvalidControlFileException ex) {
423 9c9c442b5f2e Major refactoring of exception handling. Low-level API uses RuntimeExceptions, while checked are left for higher level Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 420 diff changeset	359 // TODO post-1.0 fill HgRuntimeException with appropriate file (either index or data, depending on error source)
366 189dc6dc1c3e Use exceptions to expose errors reading mercurial data Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 354 diff changeset	360 throw ex;
3 24bb4f365164 Rudimentary log functionality with basic infrastructure is in place Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 2 diff changeset	361 } finally {
593 9619301a7bb9 Share last revision read between #iterate() invocations, to save revision rebuild efforts when few subsequent revisions are read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 585 diff changeset	362 CachedRevision cr = r.finish();
9619301a7bb9 Share last revision read between #iterate() invocations, to save revision rebuild efforts when few subsequent revisions are read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 585 diff changeset	363 setLastRevisionRead(cr);
2 08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	364 }
08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	365 }
607 66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	366
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	367 public void attach(Observer listener) {
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	368 assert listener != null;
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	369 if (observers == null) {
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	370 observers = new ArrayList<Observer>(3);
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	371 }
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	372 observers.add(listener);
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	373 }
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	374
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	375 public void detach(Observer listener) {
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	376 assert listener != null;
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	377 if (observers != null) {
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	378 observers.remove(listener);
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	379 }
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	380 }
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	381
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	382 /*
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	383 * Note, this method IS NOT a replacement for Observer. It has to be invoked when the validity of any
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	384 * cache built using revision information is in doubt, but it provides reasonable value only till the
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	385 * first initOutline() to be invoked, i.e. in [change..revlog read operation] time frame. If your code
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	386 * accesses cached information without any prior explicit read operation, you shall consult this method
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	387 * if next read operation would in fact bring changed content.
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	388 * Observer is needed in addition to this method because any revlog read operation (e.g. Revlog#getLastRevision)
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	389 * would clear shallDropDerivedCaches(), and if code relies only on this method to clear its derived caches,
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	390 * it would miss the update.
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	391 */
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	392 public boolean shallDropDerivedCaches() {
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	393 if (shallDropDerivedCaches) {
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	394 return shallDropDerivedCaches;
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	395 }
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	396 return shallDropDerivedCaches = changeTracker.hasChanged(indexFile);
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	397 }
198 33a7d76f067b Performance optimization: reduce memory to keep revlog cached info Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 170 diff changeset	398
539 9edfd5a223b8 Commit: handle empty repository case Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 538 diff changeset	399 void revisionAdded(int revisionIndex, Nodeid revision, int baseRevisionIndex, long revisionOffset) throws HgInvalidControlFileException {
607 66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	400 shallDropDerivedCaches = true;
539 9edfd5a223b8 Commit: handle empty repository case Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 538 diff changeset	401 if (!outlineCached()) {
9edfd5a223b8 Commit: handle empty repository case Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 538 diff changeset	402 return;
9edfd5a223b8 Commit: handle empty repository case Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 538 diff changeset	403 }
9edfd5a223b8 Commit: handle empty repository case Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 538 diff changeset	404 if (baseRevisions.length != revisionIndex) {
9edfd5a223b8 Commit: handle empty repository case Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 538 diff changeset	405 throw new HgInvalidControlFileException(String.format("New entry's index shall be %d, not %d", baseRevisions.length, revisionIndex), null, indexFile);
9edfd5a223b8 Commit: handle empty repository case Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 538 diff changeset	406 }
9edfd5a223b8 Commit: handle empty repository case Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 538 diff changeset	407 if (baseRevisionIndex < 0 \|\| baseRevisionIndex > baseRevisions.length) {
9edfd5a223b8 Commit: handle empty repository case Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 538 diff changeset	408 // baseRevisionIndex MAY be == to baseRevisions.length, it's when new revision is based on itself
9edfd5a223b8 Commit: handle empty repository case Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 538 diff changeset	409 throw new HgInvalidControlFileException(String.format("Base revision index %d doesn't fit [0..%d] range", baseRevisionIndex, baseRevisions.length), null, indexFile);
9edfd5a223b8 Commit: handle empty repository case Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 538 diff changeset	410 }
9edfd5a223b8 Commit: handle empty repository case Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 538 diff changeset	411 assert revision != null;
9edfd5a223b8 Commit: handle empty repository case Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 538 diff changeset	412 assert !revision.isNull();
9edfd5a223b8 Commit: handle empty repository case Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 538 diff changeset	413 int[] baseRevisionsCopy = new int[baseRevisions.length + 1];
9edfd5a223b8 Commit: handle empty repository case Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 538 diff changeset	414 System.arraycopy(baseRevisions, 0, baseRevisionsCopy, 0, baseRevisions.length);
9edfd5a223b8 Commit: handle empty repository case Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 538 diff changeset	415 baseRevisionsCopy[baseRevisions.length] = baseRevisionIndex;
9edfd5a223b8 Commit: handle empty repository case Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 538 diff changeset	416 baseRevisions = baseRevisionsCopy;
9edfd5a223b8 Commit: handle empty repository case Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 538 diff changeset	417 if (inline && indexRecordOffset != null) {
9edfd5a223b8 Commit: handle empty repository case Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 538 diff changeset	418 assert indexRecordOffset.length == revisionIndex;
9edfd5a223b8 Commit: handle empty repository case Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 538 diff changeset	419 int[] indexRecordOffsetCopy = new int[indexRecordOffset.length + 1];
559 6ca3d0c5b4bc Commit: tests and fixes for defects discovered Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 539 diff changeset	420 System.arraycopy(indexRecordOffset, 0, indexRecordOffsetCopy, 0, indexRecordOffset.length);
539 9edfd5a223b8 Commit: handle empty repository case Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 538 diff changeset	421 indexRecordOffsetCopy[indexRecordOffset.length] = offsetFieldToInlineFileOffset(revisionOffset, revisionIndex);
9edfd5a223b8 Commit: handle empty repository case Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 538 diff changeset	422 indexRecordOffset = indexRecordOffsetCopy;
9edfd5a223b8 Commit: handle empty repository case Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 538 diff changeset	423 }
9edfd5a223b8 Commit: handle empty repository case Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 538 diff changeset	424 }
9edfd5a223b8 Commit: handle empty repository case Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 538 diff changeset	425
198 33a7d76f067b Performance optimization: reduce memory to keep revlog cached info Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 170 diff changeset	426 private int getBaseRevision(int revision) {
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 170 diff changeset	427 return baseRevisions[revision];
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 170 diff changeset	428 }
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 170 diff changeset	429
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 170 diff changeset	430 /**
354 5f9073eabf06 Propagate errors with exceptions up to a end client Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 347 diff changeset	431 * @param revisionIndex shall be valid index, [0..baseRevisions.length-1].
5f9073eabf06 Propagate errors with exceptions up to a end client Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 347 diff changeset	432 * It's advised to use {@link #checkRevisionIndex(int)} to ensure argument is correct.
198 33a7d76f067b Performance optimization: reduce memory to keep revlog cached info Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 170 diff changeset	433 * @return offset of the revision's record in the index (.i) stream
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 170 diff changeset	434 */
354 5f9073eabf06 Propagate errors with exceptions up to a end client Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 347 diff changeset	435 private int getIndexOffsetInt(int revisionIndex) {
5f9073eabf06 Propagate errors with exceptions up to a end client Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 347 diff changeset	436 return inline ? indexRecordOffset[revisionIndex] : revisionIndex * REVLOGV1_RECORD_SIZE;
5f9073eabf06 Propagate errors with exceptions up to a end client Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 347 diff changeset	437 }
5f9073eabf06 Propagate errors with exceptions up to a end client Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 347 diff changeset	438
5f9073eabf06 Propagate errors with exceptions up to a end client Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 347 diff changeset	439 private int checkRevisionIndex(int revisionIndex) throws HgInvalidRevisionException {
5f9073eabf06 Propagate errors with exceptions up to a end client Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 347 diff changeset	440 final int last = revisionCount() - 1;
5f9073eabf06 Propagate errors with exceptions up to a end client Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 347 diff changeset	441 if (revisionIndex == TIP) {
5f9073eabf06 Propagate errors with exceptions up to a end client Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 347 diff changeset	442 revisionIndex = last;
5f9073eabf06 Propagate errors with exceptions up to a end client Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 347 diff changeset	443 }
5f9073eabf06 Propagate errors with exceptions up to a end client Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 347 diff changeset	444 if (revisionIndex < 0 \|\| revisionIndex > last) {
5f9073eabf06 Propagate errors with exceptions up to a end client Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 347 diff changeset	445 throw new HgInvalidRevisionException(revisionIndex).setRevisionIndex(revisionIndex, 0, last);
5f9073eabf06 Propagate errors with exceptions up to a end client Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 347 diff changeset	446 }
5f9073eabf06 Propagate errors with exceptions up to a end client Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 347 diff changeset	447 return revisionIndex;
198 33a7d76f067b Performance optimization: reduce memory to keep revlog cached info Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 170 diff changeset	448 }
539 9edfd5a223b8 Commit: handle empty repository case Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 538 diff changeset	449
9edfd5a223b8 Commit: handle empty repository case Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 538 diff changeset	450 private boolean outlineCached() {
9edfd5a223b8 Commit: handle empty repository case Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 538 diff changeset	451 return baseRevisions != null && baseRevisions.length > 0;
9edfd5a223b8 Commit: handle empty repository case Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 538 diff changeset	452 }
9edfd5a223b8 Commit: handle empty repository case Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 538 diff changeset	453
584 ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	454 // translate 6-byte offset field value to physical file offset for inline revlogs
539 9edfd5a223b8 Commit: handle empty repository case Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 538 diff changeset	455 // DOESN'T MAKE SENSE if revlog with data is separate
9edfd5a223b8 Commit: handle empty repository case Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 538 diff changeset	456 private static int offsetFieldToInlineFileOffset(long offset, int recordIndex) throws HgInvalidStateException {
9edfd5a223b8 Commit: handle empty repository case Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 538 diff changeset	457 int o = Internals.ltoi(offset);
9edfd5a223b8 Commit: handle empty repository case Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 538 diff changeset	458 if (o != offset) {
9edfd5a223b8 Commit: handle empty repository case Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 538 diff changeset	459 // just in case, can't happen, ever, unless HG (or some other bad tool) produces index file
9edfd5a223b8 Commit: handle empty repository case Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 538 diff changeset	460 // with inlined data of size greater than 2 Gb.
9edfd5a223b8 Commit: handle empty repository case Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 538 diff changeset	461 throw new HgInvalidStateException("Data too big, offset didn't fit to sizeof(int)");
9edfd5a223b8 Commit: handle empty repository case Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 538 diff changeset	462 }
9edfd5a223b8 Commit: handle empty repository case Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 538 diff changeset	463 return o + REVLOGV1_RECORD_SIZE * recordIndex;
9edfd5a223b8 Commit: handle empty repository case Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 538 diff changeset	464 }
198 33a7d76f067b Performance optimization: reduce memory to keep revlog cached info Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 170 diff changeset	465
607 66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	466 // every access to index revlog goes after this method only.
425 48f993aa2f41 FIXMEs: exceptions, javadoc Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 423 diff changeset	467 private void initOutline() throws HgInvalidControlFileException {
607 66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	468 // true to send out 'drop-your-caches' event after outline has been built
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	469 final boolean notifyReload;
539 9edfd5a223b8 Commit: handle empty repository case Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 538 diff changeset	470 if (outlineCached()) {
607 66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	471 if (!changeTracker.hasChanged(indexFile)) {
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	472 return;
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	473 }
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	474 notifyReload = true;
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	475 } else {
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	476 // no cached outline - inital read, do not send any reload/invalidate notifications
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	477 notifyReload = false;
2 08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	478 }
607 66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	479 changeTracker.touch(indexFile);
606 5daa42067e7c Avoid mmap files when only few bytes are to be read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 594 diff changeset	480 DataAccess da = getIndexStream(false);
2 08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	481 try {
202 706bcc7cfee4 Basic test for HgIncomingCommand. Fix RepositoryComparator for cases when whole repository is unknown. Respect freshly initialized (empty) repositories in general. Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 198 diff changeset	482 if (da.isEmpty()) {
706bcc7cfee4 Basic test for HgIncomingCommand. Fix RepositoryComparator for cases when whole repository is unknown. Respect freshly initialized (empty) repositories in general. Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 198 diff changeset	483 // do not fail with exception if stream is empty, it's likely intentional
706bcc7cfee4 Basic test for HgIncomingCommand. Fix RepositoryComparator for cases when whole repository is unknown. Respect freshly initialized (empty) repositories in general. Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 198 diff changeset	484 baseRevisions = new int[0];
539 9edfd5a223b8 Commit: handle empty repository case Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 538 diff changeset	485 // empty revlog, likely to be populated, indicate we start with a single file
9edfd5a223b8 Commit: handle empty repository case Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 538 diff changeset	486 inline = true;
202 706bcc7cfee4 Basic test for HgIncomingCommand. Fix RepositoryComparator for cases when whole repository is unknown. Respect freshly initialized (empty) repositories in general. Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 198 diff changeset	487 return;
706bcc7cfee4 Basic test for HgIncomingCommand. Fix RepositoryComparator for cases when whole repository is unknown. Respect freshly initialized (empty) repositories in general. Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 198 diff changeset	488 }
9 d6d2a630f4a6 Access to underlaying file data wrapped into own Access object, implemented with FileChannel and ByteBuffer Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 6 diff changeset	489 int versionField = da.readInt();
170 71ddbf8603e8 Initial clone: populate given directory from a bundle. Everything but remote server access is there, albeit prototype code style Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 158 diff changeset	490 da.readInt(); // just to skip next 4 bytes of offset + flags
2 08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	491 final int INLINEDATA = 1 << 16;
08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	492 inline = (versionField & INLINEDATA) != 0;
288 b11f6a08f748 Avoid boxing int values and list resizes on revlog read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 280 diff changeset	493 IntVector resBases, resOffsets = null;
420 6c22bdc0bdfd Respect long offsets in revlogs Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 398 diff changeset	494 int entryCountGuess = Internals.ltoi(da.longLength() / REVLOGV1_RECORD_SIZE);
288 b11f6a08f748 Avoid boxing int values and list resizes on revlog read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 280 diff changeset	495 if (inline) {
b11f6a08f748 Avoid boxing int values and list resizes on revlog read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 280 diff changeset	496 entryCountGuess >>>= 2; // pure guess, assume useful data takes 3/4 of total space
b11f6a08f748 Avoid boxing int values and list resizes on revlog read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 280 diff changeset	497 resOffsets = new IntVector(entryCountGuess, 5000);
b11f6a08f748 Avoid boxing int values and list resizes on revlog read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 280 diff changeset	498 }
b11f6a08f748 Avoid boxing int values and list resizes on revlog read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 280 diff changeset	499 resBases = new IntVector(entryCountGuess, 5000);
b11f6a08f748 Avoid boxing int values and list resizes on revlog read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 280 diff changeset	500
2 08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	501 long offset = 0; // first offset is always 0, thus Hg uses it for other purposes
9 d6d2a630f4a6 Access to underlaying file data wrapped into own Access object, implemented with FileChannel and ByteBuffer Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 6 diff changeset	502 while(true) {
d6d2a630f4a6 Access to underlaying file data wrapped into own Access object, implemented with FileChannel and ByteBuffer Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 6 diff changeset	503 int compressedLen = da.readInt();
5 fc265ddeab26 File content and non-effective, although working, patch application Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 4 diff changeset	504 // 8+4 = 12 bytes total read here
49 26e3eeaa3962 branch and user filtering for log operation Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 44 diff changeset	505 @SuppressWarnings("unused")
9 d6d2a630f4a6 Access to underlaying file data wrapped into own Access object, implemented with FileChannel and ByteBuffer Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 6 diff changeset	506 int actualLen = da.readInt();
d6d2a630f4a6 Access to underlaying file data wrapped into own Access object, implemented with FileChannel and ByteBuffer Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 6 diff changeset	507 int baseRevision = da.readInt();
5 fc265ddeab26 File content and non-effective, although working, patch application Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 4 diff changeset	508 // 12 + 8 = 20 bytes read here
2 08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	509 // int linkRevision = di.readInt();
08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	510 // int parent1Revision = di.readInt();
08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	511 // int parent2Revision = di.readInt();
08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	512 // byte[] nodeid = new byte[32];
198 33a7d76f067b Performance optimization: reduce memory to keep revlog cached info Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 170 diff changeset	513 resBases.add(baseRevision);
2 08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	514 if (inline) {
539 9edfd5a223b8 Commit: handle empty repository case Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 538 diff changeset	515 int o = offsetFieldToInlineFileOffset(offset, resOffsets.size());
9edfd5a223b8 Commit: handle empty repository case Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 538 diff changeset	516 resOffsets.add(o);
9 d6d2a630f4a6 Access to underlaying file data wrapped into own Access object, implemented with FileChannel and ByteBuffer Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 6 diff changeset	517 da.skip(3*4 + 32 + compressedLen); // Check: 44 (skip) + 20 (read) = 64 (total RevlogNG record size)
2 08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	518 } else {
9 d6d2a630f4a6 Access to underlaying file data wrapped into own Access object, implemented with FileChannel and ByteBuffer Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 6 diff changeset	519 da.skip(3*4 + 32);
2 08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	520 }
10 382cfe9463db Dirstate parsing. DataAccess refactored to allow reuse and control over constants Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 9 diff changeset	521 if (da.isEmpty()) {
9 d6d2a630f4a6 Access to underlaying file data wrapped into own Access object, implemented with FileChannel and ByteBuffer Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 6 diff changeset	522 // fine, done then
288 b11f6a08f748 Avoid boxing int values and list resizes on revlog read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 280 diff changeset	523 baseRevisions = resBases.toArray(true);
198 33a7d76f067b Performance optimization: reduce memory to keep revlog cached info Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 170 diff changeset	524 if (inline) {
288 b11f6a08f748 Avoid boxing int values and list resizes on revlog read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 280 diff changeset	525 indexRecordOffset = resOffsets.toArray(true);
198 33a7d76f067b Performance optimization: reduce memory to keep revlog cached info Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 170 diff changeset	526 }
9 d6d2a630f4a6 Access to underlaying file data wrapped into own Access object, implemented with FileChannel and ByteBuffer Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 6 diff changeset	527 break;
10 382cfe9463db Dirstate parsing. DataAccess refactored to allow reuse and control over constants Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 9 diff changeset	528 } else {
382cfe9463db Dirstate parsing. DataAccess refactored to allow reuse and control over constants Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 9 diff changeset	529 // start reading next record
382cfe9463db Dirstate parsing. DataAccess refactored to allow reuse and control over constants Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 9 diff changeset	530 long l = da.readLong();
382cfe9463db Dirstate parsing. DataAccess refactored to allow reuse and control over constants Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 9 diff changeset	531 offset = l >>> 16;
9 d6d2a630f4a6 Access to underlaying file data wrapped into own Access object, implemented with FileChannel and ByteBuffer Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 6 diff changeset	532 }
2 08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	533 }
08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	534 } catch (IOException ex) {
423 9c9c442b5f2e Major refactoring of exception handling. Low-level API uses RuntimeExceptions, while checked are left for higher level Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 420 diff changeset	535 throw new HgInvalidControlFileException("Failed to analyze revlog index", ex, indexFile);
9 d6d2a630f4a6 Access to underlaying file data wrapped into own Access object, implemented with FileChannel and ByteBuffer Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 6 diff changeset	536 } finally {
d6d2a630f4a6 Access to underlaying file data wrapped into own Access object, implemented with FileChannel and ByteBuffer Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 6 diff changeset	537 da.done();
607 66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	538 if (notifyReload && observers != null) {
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	539 for (Observer l : observers) {
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	540 l.reloaded(this);
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	541 }
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	542 shallDropDerivedCaches = false;
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	543 }
2 08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	544 }
3 24bb4f365164 Rudimentary log functionality with basic infrastructure is in place Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 2 diff changeset	545 }
24bb4f365164 Rudimentary log functionality with basic infrastructure is in place Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 2 diff changeset	546
593 9619301a7bb9 Share last revision read between #iterate() invocations, to save revision rebuild efforts when few subsequent revisions are read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 585 diff changeset	547 private CachedRevision getLastRevisionRead() {
9619301a7bb9 Share last revision read between #iterate() invocations, to save revision rebuild efforts when few subsequent revisions are read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 585 diff changeset	548 return lastRevisionRead == null ? null : lastRevisionRead.get();
9619301a7bb9 Share last revision read between #iterate() invocations, to save revision rebuild efforts when few subsequent revisions are read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 585 diff changeset	549 }
9619301a7bb9 Share last revision read between #iterate() invocations, to save revision rebuild efforts when few subsequent revisions are read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 585 diff changeset	550
9619301a7bb9 Share last revision read between #iterate() invocations, to save revision rebuild efforts when few subsequent revisions are read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 585 diff changeset	551 private void setLastRevisionRead(CachedRevision cr) {
9619301a7bb9 Share last revision read between #iterate() invocations, to save revision rebuild efforts when few subsequent revisions are read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 585 diff changeset	552 // done() for lastRevisionRead.userData has been called by ReaderN1 once
9619301a7bb9 Share last revision read between #iterate() invocations, to save revision rebuild efforts when few subsequent revisions are read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 585 diff changeset	553 // it noticed unsuitable DataAccess.
9619301a7bb9 Share last revision read between #iterate() invocations, to save revision rebuild efforts when few subsequent revisions are read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 585 diff changeset	554 // Now, done() for any CachedRevision cleared by GC:
9619301a7bb9 Share last revision read between #iterate() invocations, to save revision rebuild efforts when few subsequent revisions are read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 585 diff changeset	555 for (Reference<? extends CachedRevision> r; (r = lastRevisionQueue.poll()) != null;) {
9619301a7bb9 Share last revision read between #iterate() invocations, to save revision rebuild efforts when few subsequent revisions are read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 585 diff changeset	556 CachedRevision toClean = r.get();
9619301a7bb9 Share last revision read between #iterate() invocations, to save revision rebuild efforts when few subsequent revisions are read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 585 diff changeset	557 if (toClean != null && toClean.userData != null) {
9619301a7bb9 Share last revision read between #iterate() invocations, to save revision rebuild efforts when few subsequent revisions are read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 585 diff changeset	558 toClean.userData.done();
9619301a7bb9 Share last revision read between #iterate() invocations, to save revision rebuild efforts when few subsequent revisions are read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 585 diff changeset	559 }
9619301a7bb9 Share last revision read between #iterate() invocations, to save revision rebuild efforts when few subsequent revisions are read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 585 diff changeset	560 }
9619301a7bb9 Share last revision read between #iterate() invocations, to save revision rebuild efforts when few subsequent revisions are read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 585 diff changeset	561 if (cr != null) {
9619301a7bb9 Share last revision read between #iterate() invocations, to save revision rebuild efforts when few subsequent revisions are read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 585 diff changeset	562 lastRevisionRead = new SoftReference<CachedRevision>(cr, lastRevisionQueue);
9619301a7bb9 Share last revision read between #iterate() invocations, to save revision rebuild efforts when few subsequent revisions are read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 585 diff changeset	563 } else {
9619301a7bb9 Share last revision read between #iterate() invocations, to save revision rebuild efforts when few subsequent revisions are read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 585 diff changeset	564 lastRevisionRead = null;
9619301a7bb9 Share last revision read between #iterate() invocations, to save revision rebuild efforts when few subsequent revisions are read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 585 diff changeset	565 }
9619301a7bb9 Share last revision read between #iterate() invocations, to save revision rebuild efforts when few subsequent revisions are read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 585 diff changeset	566 }
9619301a7bb9 Share last revision read between #iterate() invocations, to save revision rebuild efforts when few subsequent revisions are read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 585 diff changeset	567
9619301a7bb9 Share last revision read between #iterate() invocations, to save revision rebuild efforts when few subsequent revisions are read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 585 diff changeset	568 final static class CachedRevision {
9619301a7bb9 Share last revision read between #iterate() invocations, to save revision rebuild efforts when few subsequent revisions are read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 585 diff changeset	569 final int revision;
9619301a7bb9 Share last revision read between #iterate() invocations, to save revision rebuild efforts when few subsequent revisions are read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 585 diff changeset	570 final DataAccess userData;
9619301a7bb9 Share last revision read between #iterate() invocations, to save revision rebuild efforts when few subsequent revisions are read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 585 diff changeset	571
9619301a7bb9 Share last revision read between #iterate() invocations, to save revision rebuild efforts when few subsequent revisions are read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 585 diff changeset	572 public CachedRevision(int lastRevisionRead, DataAccess lastUserData) {
9619301a7bb9 Share last revision read between #iterate() invocations, to save revision rebuild efforts when few subsequent revisions are read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 585 diff changeset	573 revision = lastRevisionRead;
9619301a7bb9 Share last revision read between #iterate() invocations, to save revision rebuild efforts when few subsequent revisions are read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 585 diff changeset	574 userData = lastUserData;
9619301a7bb9 Share last revision read between #iterate() invocations, to save revision rebuild efforts when few subsequent revisions are read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 585 diff changeset	575 }
9619301a7bb9 Share last revision read between #iterate() invocations, to save revision rebuild efforts when few subsequent revisions are read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 585 diff changeset	576 }
9619301a7bb9 Share last revision read between #iterate() invocations, to save revision rebuild efforts when few subsequent revisions are read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 585 diff changeset	577
242 ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	578 /**
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	579 * operation with single file open/close and multiple diverse reads.
366 189dc6dc1c3e Use exceptions to expose errors reading mercurial data Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 354 diff changeset	580 * XXX initOutline might need similar extraction to keep N1 format knowledge
242 ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	581 */
584 ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	582 final class ReaderN1 {
242 ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	583 private final Inspector inspector;
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	584 private final boolean needData;
584 ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	585 private final boolean mergePatches;
242 ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	586 private DataAccess daIndex = null, daData = null;
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	587 private Lifecycle.BasicCallback cb = null;
520 1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 440 diff changeset	588 private Lifecycle lifecycleListener = null;
242 ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	589 private int lastRevisionRead = BAD_REVISION;
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	590 private DataAccess lastUserData;
584 ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	591 //
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	592 // next are transient values, for range() use only
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	593 private final Inflater inflater = new Inflater();
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	594 // can share buffer between instances of InflaterDataAccess as I never read any two of them in parallel
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	595 private final byte[] inflaterBuffer = new byte[10 * 1024]; // TODO consider using DAP.DEFAULT_FILE_BUFFER
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	596 private final byte[] nodeidBuf = new byte[20];
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	597 // revlog record fields
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	598 private long offset;
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	599 @SuppressWarnings("unused")
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	600 private int flags;
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	601 private int compressedLen;
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	602 private int actualLen;
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	603 private int baseRevision;
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	604 private int linkRevision;
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	605 private int parent1Revision;
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	606 private int parent2Revision;
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	607
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	608 public ReaderN1(boolean dataRequested, Inspector insp, boolean usePatchMerge) {
242 ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	609 assert insp != null;
584 ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	610 needData = dataRequested;
242 ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	611 inspector = insp;
584 ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	612 mergePatches = usePatchMerge;
242 ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	613 }
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	614
593 9619301a7bb9 Share last revision read between #iterate() invocations, to save revision rebuild efforts when few subsequent revisions are read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 585 diff changeset	615 public void start(int totalWork, CachedRevision cachedRevision) {
606 5daa42067e7c Avoid mmap files when only few bytes are to be read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 594 diff changeset	616 daIndex = getIndexStream(totalWork <= 10);
242 ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	617 if (needData && !inline) {
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	618 daData = getDataStream();
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	619 }
520 1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 440 diff changeset	620 lifecycleListener = Adaptable.Factory.getAdapter(inspector, Lifecycle.class, null);
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 440 diff changeset	621 if (lifecycleListener != null) {
242 ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	622 cb = new Lifecycle.BasicCallback();
520 1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 440 diff changeset	623 lifecycleListener.start(totalWork, cb, cb);
242 ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	624 }
593 9619301a7bb9 Share last revision read between #iterate() invocations, to save revision rebuild efforts when few subsequent revisions are read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 585 diff changeset	625 if (needData && cachedRevision != null) {
9619301a7bb9 Share last revision read between #iterate() invocations, to save revision rebuild efforts when few subsequent revisions are read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 585 diff changeset	626 lastUserData = cachedRevision.userData;
9619301a7bb9 Share last revision read between #iterate() invocations, to save revision rebuild efforts when few subsequent revisions are read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 585 diff changeset	627 lastRevisionRead = cachedRevision.revision;
9619301a7bb9 Share last revision read between #iterate() invocations, to save revision rebuild efforts when few subsequent revisions are read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 585 diff changeset	628 assert lastUserData != null;
9619301a7bb9 Share last revision read between #iterate() invocations, to save revision rebuild efforts when few subsequent revisions are read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 585 diff changeset	629 }
242 ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	630 }
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	631
520 1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 440 diff changeset	632 // invoked only once per instance
593 9619301a7bb9 Share last revision read between #iterate() invocations, to save revision rebuild efforts when few subsequent revisions are read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 585 diff changeset	633 public CachedRevision finish() {
9619301a7bb9 Share last revision read between #iterate() invocations, to save revision rebuild efforts when few subsequent revisions are read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 585 diff changeset	634 CachedRevision rv = null;
242 ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	635 if (lastUserData != null) {
594 cc7b0c4dc993 Cache only in-memory revision representations Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 593 diff changeset	636 if (lastUserData instanceof ByteArrayDataAccess) {
cc7b0c4dc993 Cache only in-memory revision representations Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 593 diff changeset	637 // it's safe to cache only in-memory revision texts,
cc7b0c4dc993 Cache only in-memory revision representations Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 593 diff changeset	638 // if lastUserData is merely a filter over file stream,
cc7b0c4dc993 Cache only in-memory revision representations Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 593 diff changeset	639 // we'd need to keep file open, and this is bad.
cc7b0c4dc993 Cache only in-memory revision representations Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 593 diff changeset	640 // XXX perhaps, wrap any DataAccess.byteArray into
cc7b0c4dc993 Cache only in-memory revision representations Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 593 diff changeset	641 // ByteArrayDataAccess?
cc7b0c4dc993 Cache only in-memory revision representations Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 593 diff changeset	642 rv = new CachedRevision(lastRevisionRead, lastUserData);
cc7b0c4dc993 Cache only in-memory revision representations Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 593 diff changeset	643 } else {
cc7b0c4dc993 Cache only in-memory revision representations Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 593 diff changeset	644 lastUserData.done();
cc7b0c4dc993 Cache only in-memory revision representations Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 593 diff changeset	645 }
242 ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	646 lastUserData = null;
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	647 }
520 1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 440 diff changeset	648 if (lifecycleListener != null) {
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 440 diff changeset	649 lifecycleListener.finish(cb);
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 440 diff changeset	650 lifecycleListener = null;
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 440 diff changeset	651 cb = null;
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 440 diff changeset	652
242 ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	653 }
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	654 daIndex.done();
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	655 if (daData != null) {
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	656 daData.done();
520 1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 440 diff changeset	657 daData = null;
242 ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	658 }
593 9619301a7bb9 Share last revision read between #iterate() invocations, to save revision rebuild efforts when few subsequent revisions are read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 585 diff changeset	659 return rv;
242 ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	660 }
584 ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	661
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	662 private void readHeaderRecord(int i) throws IOException {
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	663 if (inline && needData) {
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	664 // inspector reading data (though FilterDataAccess) may have affected index position
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	665 daIndex.seek(getIndexOffsetInt(i));
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	666 }
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	667 long l = daIndex.readLong(); // 0
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	668 offset = i == 0 ? 0 : (l >>> 16);
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	669 flags = (int) (l & 0x0FFFF);
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	670 compressedLen = daIndex.readInt(); // +8
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	671 actualLen = daIndex.readInt(); // +12
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	672 baseRevision = daIndex.readInt(); // +16
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	673 linkRevision = daIndex.readInt(); // +20
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	674 parent1Revision = daIndex.readInt();
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	675 parent2Revision = daIndex.readInt();
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	676 // Hg has 32 bytes here, uses 20 for nodeid, and keeps 12 last bytes empty
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	677 daIndex.readBytes(nodeidBuf, 0, 20); // +32
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	678 daIndex.skip(12);
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	679 }
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	680
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	681 private boolean isPatch(int i) {
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	682 return baseRevision != i; // the only way I found to tell if it's a patch
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	683 }
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	684
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	685 private DataAccess getStoredData(int i) throws IOException {
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	686 DataAccess userDataAccess = null;
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	687 DataAccess streamDataAccess;
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	688 long streamOffset;
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	689 if (inline) {
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	690 streamOffset = getIndexOffsetInt(i) + REVLOGV1_RECORD_SIZE;
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	691 streamDataAccess = daIndex;
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	692 // don't need to do seek as it's actual position in the index stream, but it's safe to seek, just in case
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	693 daIndex.longSeek(streamOffset);
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	694 } else {
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	695 streamOffset = offset;
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	696 streamDataAccess = daData;
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	697 daData.longSeek(streamOffset);
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	698 }
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	699 if (streamDataAccess.isEmpty() \|\| compressedLen == 0) {
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	700 userDataAccess = new DataAccess(); // empty
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	701 } else {
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	702 final byte firstByte = streamDataAccess.readByte();
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	703 if (firstByte == 0x78 /* 'x' */) {
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	704 inflater.reset();
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	705 userDataAccess = new InflaterDataAccess(streamDataAccess, streamOffset, compressedLen, isPatch(i) ? -1 : actualLen, inflater, inflaterBuffer);
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	706 } else if (firstByte == 0x75 /* 'u' */) {
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	707 userDataAccess = new FilterDataAccess(streamDataAccess, streamOffset+1, compressedLen-1);
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	708 } else {
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	709 // XXX Python impl in fact throws exception when there's not 'x', 'u' or '0' but I don't see reason not to return data as is
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	710 //
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	711 // although firstByte is already read from the streamDataAccess, FilterDataAccess#readByte would seek to
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	712 // initial offset before first attempt to read a byte
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	713 userDataAccess = new FilterDataAccess(streamDataAccess, streamOffset, compressedLen);
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	714 }
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	715 }
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	716 return userDataAccess;
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	717 }
263 31f67be94e71 RevlogStream - reduce number of object instances, reuse when possible Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 258 diff changeset	718
520 1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 440 diff changeset	719 // may be invoked few times per instance life
423 9c9c442b5f2e Major refactoring of exception handling. Low-level API uses RuntimeExceptions, while checked are left for higher level Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 420 diff changeset	720 public boolean range(int start, int end) throws IOException {
242 ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	721 int i;
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	722 // it (i.e. replace with i >= start)
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	723 if (needData && (i = getBaseRevision(start)) < start) {
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	724 // if lastRevisionRead in [baseRevision(start), start) can reuse lastUserData
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	725 // doesn't make sense to reuse if lastRevisionRead == start (too much to change in the cycle below).
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	726 if (lastRevisionRead != BAD_REVISION && i <= lastRevisionRead && lastRevisionRead < start) {
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	727 i = lastRevisionRead + 1; // start with first not-yet-read revision
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	728 } else {
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	729 if (lastUserData != null) {
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	730 lastUserData.done();
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	731 lastUserData = null;
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	732 }
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	733 }
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	734 } else {
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	735 // don't need to clean lastUserData as it's always null when !needData
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	736 i = start;
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	737 }
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	738
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	739 daIndex.seek(getIndexOffsetInt(i));
258 e5776067b3b8 Reduce number of objects instantiated on revlog read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 243 diff changeset	740 //
584 ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	741 // reuse instance, do not normalize it as patches from the stream are unlikely to need it
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	742 final Patch patch = new Patch(false);
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	743 //
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	744 if (needData && mergePatches && start-i > 2) {
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	745 // i+1 == start just reads lastUserData, i+2 == start applies one patch - not worth dedicated effort
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	746 Patch ultimatePatch = new Patch(true);
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	747 for ( ; i < start; i++) {
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	748 readHeaderRecord(i);
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	749 DataAccess userDataAccess = getStoredData(i);
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	750 if (lastUserData == null) {
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	751 assert !isPatch(i);
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	752 lastUserData = userDataAccess;
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	753 } else {
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	754 assert isPatch(i); // i < start and i == getBaseRevision()
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	755 patch.read(userDataAccess);
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	756 userDataAccess.done();
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	757 // I assume empty patches are applied ok
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	758 ultimatePatch = ultimatePatch.apply(patch);
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	759 patch.clear();
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	760 }
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	761 }
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	762 lastUserData.reset();
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	763 byte[] userData = ultimatePatch.apply(lastUserData, actualLen);
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	764 ultimatePatch.clear();
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	765 lastUserData.done();
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	766 lastUserData = new ByteArrayDataAccess(userData);
ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	767 }
263 31f67be94e71 RevlogStream - reduce number of object instances, reuse when possible Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 258 diff changeset	768 //
242 ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	769
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	770 for (; i <= end; i++ ) {
584 ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	771 readHeaderRecord(i);
242 ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	772 DataAccess userDataAccess = null;
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	773 if (needData) {
584 ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	774 userDataAccess = getStoredData(i);
397 5e95b0da26f2 Issue 24: IAE, Underflow in FilterDataAccess. Issue 26:UnsupportedOperationException when patching empty base revision. Tests Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 377 diff changeset	775 // userDataAccess is revision content, either complete revision, patch of a previous content, or an empty patch
584 ed243b668502 Conditionally enable effective patch merge alternative for revlog reading Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 580 diff changeset	776 if (isPatch(i)) {
242 ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	777 // this is a patch
397 5e95b0da26f2 Issue 24: IAE, Underflow in FilterDataAccess. Issue 26:UnsupportedOperationException when patching empty base revision. Tests Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 377 diff changeset	778 if (userDataAccess.isEmpty()) {
5e95b0da26f2 Issue 24: IAE, Underflow in FilterDataAccess. Issue 26:UnsupportedOperationException when patching empty base revision. Tests Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 377 diff changeset	779 // Issue 22, empty patch to an empty base revision
5e95b0da26f2 Issue 24: IAE, Underflow in FilterDataAccess. Issue 26:UnsupportedOperationException when patching empty base revision. Tests Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 377 diff changeset	780 // Issue 24, empty patch to non-empty base revision
5e95b0da26f2 Issue 24: IAE, Underflow in FilterDataAccess. Issue 26:UnsupportedOperationException when patching empty base revision. Tests Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 377 diff changeset	781 // empty patch modifies nothing, use content of a previous revision (shall present - it's a patch here)
5e95b0da26f2 Issue 24: IAE, Underflow in FilterDataAccess. Issue 26:UnsupportedOperationException when patching empty base revision. Tests Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 377 diff changeset	782 //
5e95b0da26f2 Issue 24: IAE, Underflow in FilterDataAccess. Issue 26:UnsupportedOperationException when patching empty base revision. Tests Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 377 diff changeset	783 assert lastUserData.length() == actualLen; // with no patch, data size shall be the same
5e95b0da26f2 Issue 24: IAE, Underflow in FilterDataAccess. Issue 26:UnsupportedOperationException when patching empty base revision. Tests Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 377 diff changeset	784 userDataAccess = lastUserData;
5e95b0da26f2 Issue 24: IAE, Underflow in FilterDataAccess. Issue 26:UnsupportedOperationException when patching empty base revision. Tests Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 377 diff changeset	785 } else {
5e95b0da26f2 Issue 24: IAE, Underflow in FilterDataAccess. Issue 26:UnsupportedOperationException when patching empty base revision. Tests Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 377 diff changeset	786 patch.read(userDataAccess);
5e95b0da26f2 Issue 24: IAE, Underflow in FilterDataAccess. Issue 26:UnsupportedOperationException when patching empty base revision. Tests Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 377 diff changeset	787 userDataAccess.done();
5e95b0da26f2 Issue 24: IAE, Underflow in FilterDataAccess. Issue 26:UnsupportedOperationException when patching empty base revision. Tests Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 377 diff changeset	788 //
5e95b0da26f2 Issue 24: IAE, Underflow in FilterDataAccess. Issue 26:UnsupportedOperationException when patching empty base revision. Tests Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 377 diff changeset	789 // it shall be reset at the end of prev iteration, when it got assigned from userDataAccess
5e95b0da26f2 Issue 24: IAE, Underflow in FilterDataAccess. Issue 26:UnsupportedOperationException when patching empty base revision. Tests Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 377 diff changeset	790 // however, actual userDataAccess and lastUserData may share Inflater object, which needs to be reset
5e95b0da26f2 Issue 24: IAE, Underflow in FilterDataAccess. Issue 26:UnsupportedOperationException when patching empty base revision. Tests Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 377 diff changeset	791 // Alternatively, userDataAccess.done() above may be responsible to reset Inflater (if it's InflaterDataAccess)
5e95b0da26f2 Issue 24: IAE, Underflow in FilterDataAccess. Issue 26:UnsupportedOperationException when patching empty base revision. Tests Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 377 diff changeset	792 lastUserData.reset();
5e95b0da26f2 Issue 24: IAE, Underflow in FilterDataAccess. Issue 26:UnsupportedOperationException when patching empty base revision. Tests Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 377 diff changeset	793 // final long startMeasuring = System.currentTimeMillis(); // TIMING
5e95b0da26f2 Issue 24: IAE, Underflow in FilterDataAccess. Issue 26:UnsupportedOperationException when patching empty base revision. Tests Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 377 diff changeset	794 byte[] userData = patch.apply(lastUserData, actualLen);
5e95b0da26f2 Issue 24: IAE, Underflow in FilterDataAccess. Issue 26:UnsupportedOperationException when patching empty base revision. Tests Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 377 diff changeset	795 // applyTime += (System.currentTimeMillis() - startMeasuring); // TIMING
5e95b0da26f2 Issue 24: IAE, Underflow in FilterDataAccess. Issue 26:UnsupportedOperationException when patching empty base revision. Tests Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 377 diff changeset	796 patch.clear(); // do not keep any reference, allow byte[] data to be gc'd
5e95b0da26f2 Issue 24: IAE, Underflow in FilterDataAccess. Issue 26:UnsupportedOperationException when patching empty base revision. Tests Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 377 diff changeset	797 userDataAccess = new ByteArrayDataAccess(userData);
5e95b0da26f2 Issue 24: IAE, Underflow in FilterDataAccess. Issue 26:UnsupportedOperationException when patching empty base revision. Tests Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 377 diff changeset	798 }
242 ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	799 }
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	800 } else {
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	801 if (inline) {
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	802 daIndex.skip(compressedLen);
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	803 }
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	804 }
329 694ebabb5cb3 Refactor revlog patch mechanism, towards patch merging Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 300 diff changeset	805 if (i >= start) {
264 6bb5e7ed051a Optimize memory usage (reduce number of objects instantiated) when pooling file names and nodeids during manifest parsing Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 263 diff changeset	806 // final long startMeasuring = System.currentTimeMillis(); // TIMING
242 ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	807 inspector.next(i, actualLen, baseRevision, linkRevision, parent1Revision, parent2Revision, nodeidBuf, userDataAccess);
264 6bb5e7ed051a Optimize memory usage (reduce number of objects instantiated) when pooling file names and nodeids during manifest parsing Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 263 diff changeset	808 // inspectorTime += (System.currentTimeMillis() - startMeasuring); // TIMING
242 ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	809 }
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	810 if (cb != null) {
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	811 if (cb.isStopped()) {
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	812 return false;
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	813 }
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	814 }
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	815 if (userDataAccess != null) {
263 31f67be94e71 RevlogStream - reduce number of object instances, reuse when possible Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 258 diff changeset	816 userDataAccess.reset(); // not sure this is necessary here, as lastUserData would get reset anyway before next use.
242 ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	817 }
397 5e95b0da26f2 Issue 24: IAE, Underflow in FilterDataAccess. Issue 26:UnsupportedOperationException when patching empty base revision. Tests Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 377 diff changeset	818 if (lastUserData != null && lastUserData != userDataAccess /* empty patch case, reuse of recent data in actual revision */) {
5e95b0da26f2 Issue 24: IAE, Underflow in FilterDataAccess. Issue 26:UnsupportedOperationException when patching empty base revision. Tests Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 377 diff changeset	819 // release lastUserData only if we didn't reuse it in actual revision due to empty patch:
5e95b0da26f2 Issue 24: IAE, Underflow in FilterDataAccess. Issue 26:UnsupportedOperationException when patching empty base revision. Tests Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 377 diff changeset	820 // empty patch means we have previous revision and didn't alter it with a patch, hence use lastUserData for userDataAccess above
263 31f67be94e71 RevlogStream - reduce number of object instances, reuse when possible Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 258 diff changeset	821 lastUserData.done();
31f67be94e71 RevlogStream - reduce number of object instances, reuse when possible Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 258 diff changeset	822 }
31f67be94e71 RevlogStream - reduce number of object instances, reuse when possible Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 258 diff changeset	823 lastUserData = userDataAccess;
242 ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	824 }
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	825 lastRevisionRead = end;
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	826 return true;
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	827 }
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	828 }
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	829
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	830
77 c677e1593919 Moved RevlogStream implementation into .internal Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 74 diff changeset	831 public interface Inspector {
c677e1593919 Moved RevlogStream implementation into .internal Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 74 diff changeset	832 // XXX boolean retVal to indicate whether to continue?
157 d5268ca7715b Merged branch wrap-data-access into default for resource-friendly data access. Updated API to promote that friendliness to clients (channels, not byte[]). More exceptions Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 53 102 diff changeset	833 // TODO specify nodeid and data length, and reuse policy (i.e. if revlog stream doesn't reuse nodeid[] for each call)
d5268ca7715b Merged branch wrap-data-access into default for resource-friendly data access. Updated API to promote that friendliness to clients (channels, not byte[]). More exceptions Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 53 102 diff changeset	834 // implementers shall not invoke DataAccess.done(), it's accomplished by #iterate at appropraite moment
423 9c9c442b5f2e Major refactoring of exception handling. Low-level API uses RuntimeExceptions, while checked are left for higher level Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 420 diff changeset	835 void next(int revisionIndex, int actualLen, int baseRevision, int linkRevision, int parent1Revision, int parent2Revision, byte[/20/] nodeid, DataAccess data);
3 24bb4f365164 Rudimentary log functionality with basic infrastructure is in place Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 2 diff changeset	836 }
539 9edfd5a223b8 Commit: handle empty repository case Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 538 diff changeset	837
607 66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	838 public interface Observer {
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	839 // notify observer of invalidate/reload event in the stream
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	840 public void reloaded(RevlogStream src);
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 606 diff changeset	841 }
0 dbd663faec1f Basic changelog parsing Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: diff changeset	842 }

Mercurial > hg4j

annotate src/org/tmatesoft/hg/internal/RevlogStream.java @ 607:66f1cc23b906