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

annotate src/org/tmatesoft/hg/internal/RevlogStream.java @ 383:994b5813a925

Few comments

author	Artem Tikhomirov <tikhomirov.artem@gmail.com>
date	Mon, 13 Feb 2012 12:47:24 +0100
parents	86f049e6bcae
children	0ae53c32ecef 5e95b0da26f2

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 /*
74 6f1b88693d48 Complete refactoring to org.tmatesoft Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 52 diff changeset	2 * Copyright (c) 2010-2011 TMate Software Ltd
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;
5 fc265ddeab26 File content and non-effective, although working, patch application Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 4 diff changeset	21
3 24bb4f365164 Rudimentary log functionality with basic infrastructure is in place Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 2 diff changeset	22 import java.io.File;
2 08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	23 import java.io.IOException;
263 31f67be94e71 RevlogStream - reduce number of object instances, reuse when possible Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 258 diff changeset	24 import java.util.zip.Inflater;
0 dbd663faec1f Basic changelog parsing Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: diff changeset	25
158 b413b16d10a5 Integer offsets and file length explictly, rather than casts throughout code. Inflater may benefit from total length hint, but shall calculate it by its own if needed Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 157 diff changeset	26 import org.tmatesoft.hg.core.HgBadStateException;
366 189dc6dc1c3e Use exceptions to expose errors reading mercurial data Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 354 diff changeset	27 import org.tmatesoft.hg.core.HgException;
354 5f9073eabf06 Propagate errors with exceptions up to a end client Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 347 diff changeset	28 import org.tmatesoft.hg.core.HgInvalidControlFileException;
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	29 import org.tmatesoft.hg.core.HgInvalidRevisionException;
74 6f1b88693d48 Complete refactoring to org.tmatesoft Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 52 diff changeset	30 import org.tmatesoft.hg.core.Nodeid;
300 650b45d290b1 Share range check code Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 297 diff changeset	31 import org.tmatesoft.hg.repo.HgInternals;
80 4222b04f34ee Follow history of a file Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 77 diff changeset	32 import org.tmatesoft.hg.repo.HgRepository;
74 6f1b88693d48 Complete refactoring to org.tmatesoft Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 52 diff changeset	33
10 382cfe9463db Dirstate parsing. DataAccess refactored to allow reuse and control over constants Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 9 diff changeset	34
0 dbd663faec1f Basic changelog parsing Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: diff changeset	35 /**
dbd663faec1f Basic changelog parsing Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: diff changeset	36 * ? 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	37 * 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	38 *
0 dbd663faec1f Basic changelog parsing Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: diff changeset	39 * @see http://mercurial.selenic.com/wiki/Revlog
dbd663faec1f Basic changelog parsing Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: diff changeset	40 * @see http://mercurial.selenic.com/wiki/RevlogNG
74 6f1b88693d48 Complete refactoring to org.tmatesoft Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 52 diff changeset	41 *
6f1b88693d48 Complete refactoring to org.tmatesoft Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 52 diff changeset	42 * @author Artem Tikhomirov
6f1b88693d48 Complete refactoring to org.tmatesoft Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 52 diff changeset	43 * @author TMate Software Ltd.
0 dbd663faec1f Basic changelog parsing Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: diff changeset	44 */
dbd663faec1f Basic changelog parsing Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: diff changeset	45 public class RevlogStream {
2 08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	46
198 33a7d76f067b Performance optimization: reduce memory to keep revlog cached info Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 170 diff changeset	47 /*
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 170 diff changeset	48 * 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	49 *
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 170 diff changeset	50 * 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	51 * 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	52 * 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	53 * 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	54 */
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 170 diff changeset	55 private int[] indexRecordOffset;
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 170 diff changeset	56 private int[] baseRevisions;
2 08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	57 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	58 private final 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	59 private final DataAccessProvider dataAccess;
3 24bb4f365164 Rudimentary log functionality with basic infrastructure is in place Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 2 diff changeset	60
10 382cfe9463db Dirstate parsing. DataAccess refactored to allow reuse and control over constants Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 9 diff changeset	61 // 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	62 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	63 this.dataAccess = dap;
3 24bb4f365164 Rudimentary log functionality with basic infrastructure is in place Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 2 diff changeset	64 this.indexFile = indexFile;
24bb4f365164 Rudimentary log functionality with basic infrastructure is in place Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 2 diff changeset	65 }
2 08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	66
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	67 /package/ DataAccess getIndexStream() {
280 35125450c804 Erroneous and slow status for working copies based on non-tip revision Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 264 diff changeset	68 // XXX may supply a hint that I'll need really few bytes of data (perhaps, at some offset)
35125450c804 Erroneous and slow status for working copies based on non-tip revision Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 264 diff changeset	69 // to avoid mmap files when only few bytes are to be read (i.e. #dataLength())
10 382cfe9463db Dirstate parsing. DataAccess refactored to allow reuse and control over constants Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 9 diff changeset	70 return dataAccess.create(indexFile);
0 dbd663faec1f Basic changelog parsing Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: diff changeset	71 }
dbd663faec1f Basic changelog parsing Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: diff changeset	72
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	73 /package/ DataAccess getDataStream() {
3 24bb4f365164 Rudimentary log functionality with basic infrastructure is in place Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 2 diff changeset	74 final String indexName = indexFile.getName();
24bb4f365164 Rudimentary log functionality with basic infrastructure is in place Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 2 diff changeset	75 File dataFile = new File(indexFile.getParentFile(), indexName.substring(0, indexName.length() - 1) + "d");
10 382cfe9463db Dirstate parsing. DataAccess refactored to allow reuse and control over constants Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 9 diff changeset	76 return dataAccess.create(dataFile);
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	77 }
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	78
2 08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	79 public int revisionCount() {
08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	80 initOutline();
198 33a7d76f067b Performance optimization: reduce memory to keep revlog cached info Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 170 diff changeset	81 return baseRevisions.length;
2 08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	82 }
22 603806cd2dc6 Status of local working dir against non-tip base revision Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 10 diff changeset	83
295 981f9f50bb6c Issue 11: Error log facility. SessionContext to share common facilities Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 288 diff changeset	84 /**
354 5f9073eabf06 Propagate errors with exceptions up to a end client Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 347 diff changeset	85 * @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	86 * @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	87 */
354 5f9073eabf06 Propagate errors with exceptions up to a end client Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 347 diff changeset	88 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	89 // 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	90 //
354 5f9073eabf06 Propagate errors with exceptions up to a end client Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 347 diff changeset	91 revisionIndex = checkRevisionIndex(revisionIndex);
280 35125450c804 Erroneous and slow status for working copies based on non-tip revision Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 264 diff changeset	92 DataAccess daIndex = getIndexStream();
22 603806cd2dc6 Status of local working dir against non-tip base revision Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 10 diff changeset	93 try {
354 5f9073eabf06 Propagate errors with exceptions up to a end client Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 347 diff changeset	94 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	95 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	96 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	97 return actualLen;
603806cd2dc6 Status of local working dir against non-tip base revision Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 10 diff changeset	98 } catch (IOException ex) {
354 5f9073eabf06 Propagate errors with exceptions up to a end client Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 347 diff changeset	99 throw new HgInvalidControlFileException(null, ex, indexFile);
22 603806cd2dc6 Status of local working dir against non-tip base revision Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 10 diff changeset	100 } finally {
603806cd2dc6 Status of local working dir against non-tip base revision Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 10 diff changeset	101 daIndex.done();
603806cd2dc6 Status of local working dir against non-tip base revision Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 10 diff changeset	102 }
603806cd2dc6 Status of local working dir against non-tip base revision Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 10 diff changeset	103 }
603806cd2dc6 Status of local working dir against non-tip base revision Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 10 diff changeset	104
295 981f9f50bb6c Issue 11: Error log facility. SessionContext to share common facilities Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 288 diff changeset	105 /**
354 5f9073eabf06 Propagate errors with exceptions up to a end client Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 347 diff changeset	106 * 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	107 *
5f9073eabf06 Propagate errors with exceptions up to a end client Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 347 diff changeset	108 * @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	109 * @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	110 */
354 5f9073eabf06 Propagate errors with exceptions up to a end client Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 347 diff changeset	111 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	112 revisionIndex = checkRevisionIndex(revisionIndex);
80 4222b04f34ee Follow history of a file Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 77 diff changeset	113 DataAccess daIndex = getIndexStream();
4222b04f34ee Follow history of a file Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 77 diff changeset	114 try {
354 5f9073eabf06 Propagate errors with exceptions up to a end client Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 347 diff changeset	115 int recordOffset = getIndexOffsetInt(revisionIndex);
80 4222b04f34ee Follow history of a file Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 77 diff changeset	116 daIndex.seek(recordOffset + 32);
4222b04f34ee Follow history of a file Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 77 diff changeset	117 byte[] rv = new byte[20];
4222b04f34ee Follow history of a file Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 77 diff changeset	118 daIndex.readBytes(rv, 0, 20);
4222b04f34ee Follow history of a file Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 77 diff changeset	119 return rv;
4222b04f34ee Follow history of a file Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 77 diff changeset	120 } catch (IOException ex) {
354 5f9073eabf06 Propagate errors with exceptions up to a end client Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 347 diff changeset	121 throw new HgInvalidControlFileException(null, ex, indexFile);
80 4222b04f34ee Follow history of a file Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 77 diff changeset	122 } finally {
88 61eedab3eb3e Status between two revisions to recognize copy/rename Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 80 diff changeset	123 daIndex.done();
61eedab3eb3e Status between two revisions to recognize copy/rename Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 80 diff changeset	124 }
61eedab3eb3e Status between two revisions to recognize copy/rename Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 80 diff changeset	125 }
295 981f9f50bb6c Issue 11: Error log facility. SessionContext to share common facilities Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 288 diff changeset	126
981f9f50bb6c Issue 11: Error log facility. SessionContext to share common facilities Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 288 diff changeset	127 /**
981f9f50bb6c Issue 11: Error log facility. SessionContext to share common facilities Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 288 diff changeset	128 * 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	129 *
5f9073eabf06 Propagate errors with exceptions up to a end client Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 347 diff changeset	130 * @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	131 * @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	132 */
354 5f9073eabf06 Propagate errors with exceptions up to a end client Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 347 diff changeset	133 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	134 revisionIndex = checkRevisionIndex(revisionIndex);
88 61eedab3eb3e Status between two revisions to recognize copy/rename Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 80 diff changeset	135 DataAccess daIndex = getIndexStream();
61eedab3eb3e Status between two revisions to recognize copy/rename Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 80 diff changeset	136 try {
354 5f9073eabf06 Propagate errors with exceptions up to a end client Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 347 diff changeset	137 int recordOffset = getIndexOffsetInt(revisionIndex);
88 61eedab3eb3e Status between two revisions to recognize copy/rename Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 80 diff changeset	138 daIndex.seek(recordOffset + 20);
61eedab3eb3e Status between two revisions to recognize copy/rename Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 80 diff changeset	139 int linkRev = daIndex.readInt();
61eedab3eb3e Status between two revisions to recognize copy/rename Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 80 diff changeset	140 return linkRev;
61eedab3eb3e Status between two revisions to recognize copy/rename Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 80 diff changeset	141 } catch (IOException ex) {
354 5f9073eabf06 Propagate errors with exceptions up to a end client Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 347 diff changeset	142 throw new HgInvalidControlFileException(null, ex, indexFile);
88 61eedab3eb3e Status between two revisions to recognize copy/rename Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 80 diff changeset	143 } finally {
61eedab3eb3e Status between two revisions to recognize copy/rename Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 80 diff changeset	144 daIndex.done();
80 4222b04f34ee Follow history of a file Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 77 diff changeset	145 }
4222b04f34ee Follow history of a file Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 77 diff changeset	146 }
4222b04f34ee Follow history of a file Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 77 diff changeset	147
49 26e3eeaa3962 branch and user filtering for log operation Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 44 diff changeset	148 // 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	149 // 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	150 // 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	151 // 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	152 /**
4222b04f34ee Follow history of a file Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 77 diff changeset	153 * @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	154 * @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	155 */
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	156 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	157 // 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	158 final int indexSize = revisionCount();
603806cd2dc6 Status of local working dir against non-tip base revision Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 10 diff changeset	159 DataAccess daIndex = getIndexStream();
603806cd2dc6 Status of local working dir against non-tip base revision Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 10 diff changeset	160 try {
24 d4fdd1845b3f Nodeid with array of exactly 20 bytes Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 22 diff changeset	161 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	162 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	163 daIndex.skip(8);
603806cd2dc6 Status of local working dir against non-tip base revision Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 10 diff changeset	164 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	165 daIndex.skip(20);
24 d4fdd1845b3f Nodeid with array of exactly 20 bytes Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 22 diff changeset	166 daIndex.readBytes(nodeidBuf, 0, 20);
d4fdd1845b3f Nodeid with array of exactly 20 bytes Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 22 diff changeset	167 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	168 return i;
603806cd2dc6 Status of local working dir against non-tip base revision Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 10 diff changeset	169 }
603806cd2dc6 Status of local working dir against non-tip base revision Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 10 diff changeset	170 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	171 }
603806cd2dc6 Status of local working dir against non-tip base revision Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 10 diff changeset	172 } catch (IOException ex) {
354 5f9073eabf06 Propagate errors with exceptions up to a end client Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 347 diff changeset	173 throw new HgInvalidControlFileException("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	174 } finally {
603806cd2dc6 Status of local working dir against non-tip base revision Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 10 diff changeset	175 daIndex.done();
603806cd2dc6 Status of local working dir against non-tip base revision Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 10 diff changeset	176 }
80 4222b04f34ee Follow history of a file Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 77 diff changeset	177 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	178 }
603806cd2dc6 Status of local working dir against non-tip base revision Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 10 diff changeset	179
2 08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	180
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	181 private final int REVLOGV1_RECORD_SIZE = 64;
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	182
3 24bb4f365164 Rudimentary log functionality with basic infrastructure is in place Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 2 diff changeset	183 // 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	184 // ? boolean needsNodeid
366 189dc6dc1c3e Use exceptions to expose errors reading mercurial data Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 354 diff changeset	185 public void iterate(int start, int end, boolean needData, Inspector inspector) throws HgInvalidRevisionException, HgInvalidControlFileException /REVISIT - too general exception/ {
2 08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	186 initOutline();
198 33a7d76f067b Performance optimization: reduce memory to keep revlog cached info Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 170 diff changeset	187 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	188 if (indexSize == 0) {
24bb4f365164 Rudimentary log functionality with basic infrastructure is in place Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 2 diff changeset	189 return;
24bb4f365164 Rudimentary log functionality with basic infrastructure is in place Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 2 diff changeset	190 }
5 fc265ddeab26 File content and non-effective, although working, patch application Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 4 diff changeset	191 if (end == TIP) {
3 24bb4f365164 Rudimentary log functionality with basic infrastructure is in place Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 2 diff changeset	192 end = indexSize - 1;
24bb4f365164 Rudimentary log functionality with basic infrastructure is in place Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 2 diff changeset	193 }
5 fc265ddeab26 File content and non-effective, although working, patch application Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 4 diff changeset	194 if (start == TIP) {
fc265ddeab26 File content and non-effective, although working, patch application Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 4 diff changeset	195 start = indexSize - 1;
fc265ddeab26 File content and non-effective, although working, patch application Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 4 diff changeset	196 }
300 650b45d290b1 Share range check code Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 297 diff changeset	197 HgInternals.checkRevlogRange(start, end, indexSize-1);
2 08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	198 // 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	199
242 ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	200 ReaderN1 r = new ReaderN1(needData, inspector);
2 08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	201 try {
242 ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	202 r.start(end - start + 1);
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	203 r.range(start, end);
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	204 } catch (IOException ex) {
366 189dc6dc1c3e Use exceptions to expose errors reading mercurial data Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 354 diff changeset	205 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	206 } catch (HgInvalidControlFileException ex) {
189dc6dc1c3e Use exceptions to expose errors reading mercurial data Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 354 diff changeset	207 throw ex;
189dc6dc1c3e Use exceptions to expose errors reading mercurial data Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 354 diff changeset	208 } catch (HgException ex) {
189dc6dc1c3e Use exceptions to expose errors reading mercurial data Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 354 diff changeset	209 throw new HgInvalidControlFileException(String.format("Failed reading [%d..%d]", start, end), ex, indexFile);
242 ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	210 } finally {
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	211 r.finish();
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	212 }
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	213 }
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	214
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	215 /**
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	216 * 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	217 * revisions are of interest.
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	218 * @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	219 * @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	220 * @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	221 */
366 189dc6dc1c3e Use exceptions to expose errors reading mercurial data Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 354 diff changeset	222 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	223 final int indexSize = revisionCount();
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	224 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	225 return;
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	226 }
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	227 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	228 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	229 }
8da7ade36c57 Add specific IAE subclass to handle wrong (e.g. outdated after rollback) revisions Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 329 diff changeset	230 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	231 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	232 }
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	233
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	234 ReaderN1 r = new ReaderN1(needData, inspector);
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	235 try {
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	236 r.start(sortedRevisions.length);
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	237 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	238 int x = i;
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	239 i++;
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	240 while (i < sortedRevisions.length) {
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	241 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	242 i++;
2 08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	243 } 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	244 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	245 }
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	246 }
242 ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	247 // 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	248 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	249 return;
51 9429c7bd1920 Try DataAccess to reach revision data instead of plain byte arrays Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 49 diff changeset	250 }
2 08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	251 }
08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	252 } catch (IOException ex) {
366 189dc6dc1c3e Use exceptions to expose errors reading mercurial data Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 354 diff changeset	253 final int c = sortedRevisions.length;
189dc6dc1c3e Use exceptions to expose errors reading mercurial data Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 354 diff changeset	254 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	255 } catch (HgInvalidControlFileException ex) {
189dc6dc1c3e Use exceptions to expose errors reading mercurial data Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 354 diff changeset	256 throw ex;
189dc6dc1c3e Use exceptions to expose errors reading mercurial data Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 354 diff changeset	257 } catch (HgException ex) {
189dc6dc1c3e Use exceptions to expose errors reading mercurial data Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 354 diff changeset	258 final int c = sortedRevisions.length;
189dc6dc1c3e Use exceptions to expose errors reading mercurial data Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 354 diff changeset	259 throw new HgInvalidControlFileException(String.format("Failed reading %d revisions in [%d; %d]",c, sortedRevisions[0], sortedRevisions[c-1]), ex, indexFile);
3 24bb4f365164 Rudimentary log functionality with basic infrastructure is in place Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 2 diff changeset	260 } finally {
242 ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	261 r.finish();
2 08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	262 }
08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	263 }
198 33a7d76f067b Performance optimization: reduce memory to keep revlog cached info Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 170 diff changeset	264
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 170 diff changeset	265 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	266 return baseRevisions[revision];
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 170 diff changeset	267 }
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 170 diff changeset	268
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 170 diff changeset	269 /**
354 5f9073eabf06 Propagate errors with exceptions up to a end client Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 347 diff changeset	270 * @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	271 * 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	272 * @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	273 */
354 5f9073eabf06 Propagate errors with exceptions up to a end client Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 347 diff changeset	274 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	275 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	276 }
5f9073eabf06 Propagate errors with exceptions up to a end client Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 347 diff changeset	277
5f9073eabf06 Propagate errors with exceptions up to a end client Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 347 diff changeset	278 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	279 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	280 if (revisionIndex == TIP) {
5f9073eabf06 Propagate errors with exceptions up to a end client Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 347 diff changeset	281 revisionIndex = last;
5f9073eabf06 Propagate errors with exceptions up to a end client Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 347 diff changeset	282 }
5f9073eabf06 Propagate errors with exceptions up to a end client Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 347 diff changeset	283 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	284 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	285 }
5f9073eabf06 Propagate errors with exceptions up to a end client Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 347 diff changeset	286 return revisionIndex;
198 33a7d76f067b Performance optimization: reduce memory to keep revlog cached info Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 170 diff changeset	287 }
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 170 diff changeset	288
2 08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	289 private void initOutline() {
198 33a7d76f067b Performance optimization: reduce memory to keep revlog cached info Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 170 diff changeset	290 if (baseRevisions != null && baseRevisions.length > 0) {
2 08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	291 return;
08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	292 }
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	293 DataAccess da = getIndexStream();
2 08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	294 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	295 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	296 // 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	297 baseRevisions = new int[0];
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	298 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	299 }
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	300 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	301 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	302 final int INLINEDATA = 1 << 16;
08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	303 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	304 IntVector resBases, resOffsets = null;
b11f6a08f748 Avoid boxing int values and list resizes on revlog read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 280 diff changeset	305 int entryCountGuess = da.length() / REVLOGV1_RECORD_SIZE;
b11f6a08f748 Avoid boxing int values and list resizes on revlog read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 280 diff changeset	306 if (inline) {
b11f6a08f748 Avoid boxing int values and list resizes on revlog read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 280 diff changeset	307 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	308 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	309 }
b11f6a08f748 Avoid boxing int values and list resizes on revlog read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 280 diff changeset	310 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	311
2 08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	312 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	313 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	314 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	315 // 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	316 @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	317 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	318 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	319 // 12 + 8 = 20 bytes read here
2 08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	320 // int linkRevision = di.readInt();
08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	321 // int parent1Revision = di.readInt();
08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	322 // int parent2Revision = di.readInt();
08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	323 // 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	324 resBases.add(baseRevision);
2 08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	325 if (inline) {
198 33a7d76f067b Performance optimization: reduce memory to keep revlog cached info Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 170 diff changeset	326 int o = (int) offset;
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 170 diff changeset	327 if (o != offset) {
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 170 diff changeset	328 // just in case, can't happen, ever, unless HG (or some other bad tool) produces index file
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 170 diff changeset	329 // with inlined data of size greater than 2 Gb.
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 170 diff changeset	330 throw new HgBadStateException("Data too big, offset didn't fit to sizeof(int)");
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 170 diff changeset	331 }
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 170 diff changeset	332 resOffsets.add(o + REVLOGV1_RECORD_SIZE * resOffsets.size());
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	333 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	334 } 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	335 da.skip(3*4 + 32);
2 08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	336 }
10 382cfe9463db Dirstate parsing. DataAccess refactored to allow reuse and control over constants Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 9 diff changeset	337 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	338 // 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	339 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	340 if (inline) {
288 b11f6a08f748 Avoid boxing int values and list resizes on revlog read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 280 diff changeset	341 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	342 }
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	343 break;
10 382cfe9463db Dirstate parsing. DataAccess refactored to allow reuse and control over constants Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 9 diff changeset	344 } else {
382cfe9463db Dirstate parsing. DataAccess refactored to allow reuse and control over constants Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 9 diff changeset	345 // 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	346 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	347 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	348 }
2 08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	349 }
08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	350 } catch (IOException ex) {
366 189dc6dc1c3e Use exceptions to expose errors reading mercurial data Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 354 diff changeset	351 ex.printStackTrace(); // FIXME, log error is not enough
198 33a7d76f067b Performance optimization: reduce memory to keep revlog cached info Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 170 diff changeset	352 // too bad, no outline then, but don't fail with NPE
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 170 diff changeset	353 baseRevisions = new int[0];
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	354 } 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	355 da.done();
2 08db726a0fb7 Shaping out low-level Hg structures Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 0 diff changeset	356 }
3 24bb4f365164 Rudimentary log functionality with basic infrastructure is in place Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 2 diff changeset	357 }
24bb4f365164 Rudimentary log functionality with basic infrastructure is in place Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 2 diff changeset	358
242 ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	359 /**
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	360 * 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	361 * 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	362 */
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	363 class ReaderN1 {
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	364 private final Inspector inspector;
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	365 private final boolean needData;
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	366 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	367 private Lifecycle.BasicCallback cb = null;
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	368 private int lastRevisionRead = BAD_REVISION;
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	369 private DataAccess lastUserData;
263 31f67be94e71 RevlogStream - reduce number of object instances, reuse when possible Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 258 diff changeset	370 // next are to track two major bottlenecks - patch application and actual time spent in inspector
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	371 // private long applyTime, inspectorTime; // TIMING
263 31f67be94e71 RevlogStream - reduce number of object instances, reuse when possible Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 258 diff changeset	372
242 ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	373
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	374 public ReaderN1(boolean needData, Inspector insp) {
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	375 assert insp != null;
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	376 this.needData = needData;
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	377 inspector = insp;
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	378 }
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	379
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	380 public void start(int totalWork) {
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	381 daIndex = getIndexStream();
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	382 if (needData && !inline) {
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	383 daData = getDataStream();
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	384 }
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	385 if (inspector instanceof Lifecycle) {
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	386 cb = new Lifecycle.BasicCallback();
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	387 ((Lifecycle) inspector).start(totalWork, cb, cb);
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	388 }
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	389 // applyTime = inspectorTime = 0; // TIMING
242 ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	390 }
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	391
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	392 public void finish() {
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	393 if (lastUserData != null) {
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	394 lastUserData.done();
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	395 lastUserData = null;
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	396 }
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	397 if (inspector instanceof Lifecycle) {
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	398 ((Lifecycle) inspector).finish(cb);
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	399 }
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	400 daIndex.done();
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	401 if (daData != null) {
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	402 daData.done();
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	403 }
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	404 // System.out.printf("applyTime:%d ms, inspectorTime: %d ms\n", applyTime, inspectorTime); // TIMING
242 ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	405 }
263 31f67be94e71 RevlogStream - reduce number of object instances, reuse when possible Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 258 diff changeset	406
366 189dc6dc1c3e Use exceptions to expose errors reading mercurial data Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 354 diff changeset	407 public boolean range(int start, int end) throws IOException, HgException {
242 ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	408 byte[] nodeidBuf = new byte[20];
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	409 int i;
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	410 // 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	411 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	412 // 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	413 // 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	414 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	415 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	416 } else {
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	417 if (lastUserData != null) {
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	418 lastUserData.done();
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	419 lastUserData = null;
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	420 }
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	421 }
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	422 } else {
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	423 // 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	424 i = start;
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	425 }
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	426
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	427 daIndex.seek(getIndexOffsetInt(i));
258 e5776067b3b8 Reduce number of objects instantiated on revlog read Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 243 diff changeset	428 //
263 31f67be94e71 RevlogStream - reduce number of object instances, reuse when possible Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 258 diff changeset	429 // reuse some instances
329 694ebabb5cb3 Refactor revlog patch mechanism, towards patch merging Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 300 diff changeset	430 final Patch patch = new Patch();
263 31f67be94e71 RevlogStream - reduce number of object instances, reuse when possible Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 258 diff changeset	431 final Inflater inflater = new Inflater();
31f67be94e71 RevlogStream - reduce number of object instances, reuse when possible Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 258 diff changeset	432 // can share buffer between instances of InflaterDataAccess as I never read any two of them in parallel
31f67be94e71 RevlogStream - reduce number of object instances, reuse when possible Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 258 diff changeset	433 final byte[] inflaterBuffer = new byte[1024];
31f67be94e71 RevlogStream - reduce number of object instances, reuse when possible Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 258 diff changeset	434 //
242 ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	435
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	436 for (; i <= end; i++ ) {
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	437 if (inline && needData) {
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	438 // inspector reading data (though FilterDataAccess) may have affected index position
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	439 daIndex.seek(getIndexOffsetInt(i));
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	440 }
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	441 long l = daIndex.readLong(); // 0
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	442 long offset = i == 0 ? 0 : (l >>> 16);
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	443 @SuppressWarnings("unused")
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	444 int flags = (int) (l & 0X0FFFF);
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	445 int compressedLen = daIndex.readInt(); // +8
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	446 int actualLen = daIndex.readInt(); // +12
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	447 int baseRevision = daIndex.readInt(); // +16
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	448 int linkRevision = daIndex.readInt(); // +20
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	449 int parent1Revision = daIndex.readInt();
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	450 int parent2Revision = daIndex.readInt();
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	451 // Hg has 32 bytes here, uses 20 for nodeid, and keeps 12 last bytes empty
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	452 daIndex.readBytes(nodeidBuf, 0, 20); // +32
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	453 daIndex.skip(12);
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	454 DataAccess userDataAccess = null;
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	455 if (needData) {
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	456 int streamOffset;
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	457 DataAccess streamDataAccess;
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	458 if (inline) {
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	459 streamDataAccess = daIndex;
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	460 streamOffset = getIndexOffsetInt(i) + REVLOGV1_RECORD_SIZE; // don't need to do seek as it's actual position in the index stream
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	461 } else {
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	462 streamOffset = (int) offset;
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	463 streamDataAccess = daData;
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	464 daData.seek(streamOffset);
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	465 }
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	466 final boolean patchToPrevious = baseRevision != i; // the only way I found to tell if it's a patch
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	467 if (streamDataAccess.isEmpty()) {
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	468 userDataAccess = new DataAccess(); // empty
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	469 } else {
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	470 final byte firstByte = streamDataAccess.readByte();
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	471 if (firstByte == 0x78 /* 'x' */) {
263 31f67be94e71 RevlogStream - reduce number of object instances, reuse when possible Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 258 diff changeset	472 inflater.reset();
31f67be94e71 RevlogStream - reduce number of object instances, reuse when possible Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 258 diff changeset	473 userDataAccess = new InflaterDataAccess(streamDataAccess, streamOffset, compressedLen, patchToPrevious ? -1 : actualLen, inflater, inflaterBuffer);
242 ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	474 } else if (firstByte == 0x75 /* 'u' */) {
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	475 userDataAccess = new FilterDataAccess(streamDataAccess, streamOffset+1, compressedLen-1);
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	476 } else {
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	477 // XXX Python impl in fact throws exception when there's not 'x', 'u' or '0'
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	478 // but I don't see reason not to return data as is
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	479 userDataAccess = new FilterDataAccess(streamDataAccess, streamOffset, compressedLen);
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	480 }
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	481 }
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	482 // XXX
377 86f049e6bcae Issue 22: Test for subsequent empty manifest entries case for separate .i and .d repository control files Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 375 diff changeset	483 if (patchToPrevious && !userDataAccess.isEmpty() /* Issue 22, empty patch to an empty base revision*/) {
242 ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	484 // this is a patch
329 694ebabb5cb3 Refactor revlog patch mechanism, towards patch merging Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 300 diff changeset	485 patch.read(userDataAccess);
242 ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	486 userDataAccess.done();
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	487 //
263 31f67be94e71 RevlogStream - reduce number of object instances, reuse when possible Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 258 diff changeset	488 // it shall be reset at the end of prev iteration, when it got assigned from userDataAccess
31f67be94e71 RevlogStream - reduce number of object instances, reuse when possible Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 258 diff changeset	489 // however, actual userDataAccess and lastUserData may share Inflater object, which needs to be reset
31f67be94e71 RevlogStream - reduce number of object instances, reuse when possible Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 258 diff changeset	490 // Alternatively, userDataAccess.done() above may be responsible to reset Inflater (if it's InflaterDataAccess)
31f67be94e71 RevlogStream - reduce number of object instances, reuse when possible Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 258 diff changeset	491 lastUserData.reset();
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	492 // final long startMeasuring = System.currentTimeMillis(); // TIMING
329 694ebabb5cb3 Refactor revlog patch mechanism, towards patch merging Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 300 diff changeset	493 byte[] userData = patch.apply(lastUserData, actualLen);
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	494 // applyTime += (System.currentTimeMillis() - startMeasuring); // TIMING
329 694ebabb5cb3 Refactor revlog patch mechanism, towards patch merging Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 300 diff changeset	495 patch.clear(); // do not keep any reference, allow byte[] data to be gc'd
242 ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	496 userDataAccess = new ByteArrayDataAccess(userData);
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	497 }
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	498 } else {
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	499 if (inline) {
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	500 daIndex.skip(compressedLen);
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	501 }
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	502 }
329 694ebabb5cb3 Refactor revlog patch mechanism, towards patch merging Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 300 diff changeset	503 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	504 // 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	505 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	506 // 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	507 }
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	508 if (cb != null) {
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	509 if (cb.isStopped()) {
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	510 return false;
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	511 }
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	512 }
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	513 if (userDataAccess != null) {
263 31f67be94e71 RevlogStream - reduce number of object instances, reuse when possible Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 258 diff changeset	514 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	515 }
263 31f67be94e71 RevlogStream - reduce number of object instances, reuse when possible Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 258 diff changeset	516 if (lastUserData != null) {
31f67be94e71 RevlogStream - reduce number of object instances, reuse when possible Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 258 diff changeset	517 lastUserData.done();
31f67be94e71 RevlogStream - reduce number of object instances, reuse when possible Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 258 diff changeset	518 }
31f67be94e71 RevlogStream - reduce number of object instances, reuse when possible Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 258 diff changeset	519 lastUserData = userDataAccess;
242 ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	520 }
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	521 lastRevisionRead = end;
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	522 return true;
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	523 }
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	524 }
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	525
ad6a046943be Improved reading of sparse revisions from a revlog Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 223 diff changeset	526
77 c677e1593919 Moved RevlogStream implementation into .internal Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 74 diff changeset	527 public interface Inspector {
c677e1593919 Moved RevlogStream implementation into .internal Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 74 diff changeset	528 // 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	529 // 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	530 // implementers shall not invoke DataAccess.done(), it's accomplished by #iterate at appropraite moment
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	531 void next(int revisionIndex, int actualLen, int baseRevision, int linkRevision, int parent1Revision, int parent2Revision, byte[/20/] nodeid, DataAccess data) throws HgException;
3 24bb4f365164 Rudimentary log functionality with basic infrastructure is in place Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: 2 diff changeset	532 }
0 dbd663faec1f Basic changelog parsing Artem Tikhomirov <tikhomirov.artem@gmail.com> parents: diff changeset	533 }

Mercurial > hg4j

annotate src/org/tmatesoft/hg/internal/RevlogStream.java @ 383:994b5813a925