Mercurial > hg4j

annotate src/org/tmatesoft/hg/internal/RevlogChangeMonitor.java @ 695:053bb4397bf9

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Refactoring: nice Revlog.indexWalk() implementation
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Mon, 05 Aug 2013 18:45:16 +0200
parents 99ad1e3a4e4d
children
rev   line source
607
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
1 /*
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
2 * Copyright (c) 2013 TMate Software Ltd
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
3 *
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
4 * This program is free software; you can redistribute it and/or modify
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
5 * it under the terms of the GNU General Public License as published by
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
6 * the Free Software Foundation; version 2 of the License.
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
7 *
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
8 * This program is distributed in the hope that it will be useful,
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
11 * GNU General Public License for more details.
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
12 *
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
13 * For information on how to redistribute this software under
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
14 * the terms of a license other than GNU General Public License
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
15 * contact TMate Software at support@hg4j.com
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
16 */
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
17 package org.tmatesoft.hg.internal;
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
18
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
19 import java.io.File;
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
20 import java.util.WeakHashMap;
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
21
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
22 /**
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
23 * Detect changes to revlog files. Not a general file change monitoring as we utilize the fact revlogs are append-only (and even in case
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
24 * of stripped-off tail revisions, with e.g. mq, detection approach is still valid).
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
25 *
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
26 * @author Artem Tikhomirov
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
27 * @author TMate Software Ltd.
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
28 */
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
29 public class RevlogChangeMonitor {
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
30
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
31 private final WeakHashMap<File, Long> lastKnownSize;
621
99ad1e3a4e4d RevlogStream: be aware of existence (not HgDataFile), facilitate use of an added HgDataFile over a commit; Rollback: be more sensitive about file changes (file size is not enough: write/rollback leaves it intact); tests
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 607
diff changeset
32 private final WeakHashMap<File, Long> lastKnownTime;
607
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
33 private final File soleFile;
621
99ad1e3a4e4d RevlogStream: be aware of existence (not HgDataFile), facilitate use of an added HgDataFile over a commit; Rollback: be more sensitive about file changes (file size is not enough: write/rollback leaves it intact); tests
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 607
diff changeset
34 private long soleFileSize = -1;
99ad1e3a4e4d RevlogStream: be aware of existence (not HgDataFile), facilitate use of an added HgDataFile over a commit; Rollback: be more sensitive about file changes (file size is not enough: write/rollback leaves it intact); tests
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 607
diff changeset
35 private long soleFileTime = -1;
607
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
36
621
99ad1e3a4e4d RevlogStream: be aware of existence (not HgDataFile), facilitate use of an added HgDataFile over a commit; Rollback: be more sensitive about file changes (file size is not enough: write/rollback leaves it intact); tests
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 607
diff changeset
37 // use single for multiple files. TODO [1.2] repository/session context shall provide
607
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
38 // alternative (configurable) implementations, so that Java7 users may supply better one
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
39 public RevlogChangeMonitor() {
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
40 lastKnownSize = new WeakHashMap<File, Long>();
621
99ad1e3a4e4d RevlogStream: be aware of existence (not HgDataFile), facilitate use of an added HgDataFile over a commit; Rollback: be more sensitive about file changes (file size is not enough: write/rollback leaves it intact); tests
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 607
diff changeset
41 lastKnownTime= new WeakHashMap<File, Long>();
607
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
42 soleFile = null;
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
43 }
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
44
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
45 public RevlogChangeMonitor(File f) {
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
46 assert f != null;
621
99ad1e3a4e4d RevlogStream: be aware of existence (not HgDataFile), facilitate use of an added HgDataFile over a commit; Rollback: be more sensitive about file changes (file size is not enough: write/rollback leaves it intact); tests
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 607
diff changeset
47 lastKnownSize = lastKnownTime = null;
607
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
48 soleFile = f;
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
49 }
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
50
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
51 public void touch(File f) {
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
52 assert f != null;
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
53 if (lastKnownSize == null) {
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
54 assert f == soleFile;
621
99ad1e3a4e4d RevlogStream: be aware of existence (not HgDataFile), facilitate use of an added HgDataFile over a commit; Rollback: be more sensitive about file changes (file size is not enough: write/rollback leaves it intact); tests
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 607
diff changeset
55 soleFileSize = f.length();
99ad1e3a4e4d RevlogStream: be aware of existence (not HgDataFile), facilitate use of an added HgDataFile over a commit; Rollback: be more sensitive about file changes (file size is not enough: write/rollback leaves it intact); tests
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 607
diff changeset
56 soleFileTime = f.lastModified();
607
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
57 } else {
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
58 lastKnownSize.put(f, f.length());
621
99ad1e3a4e4d RevlogStream: be aware of existence (not HgDataFile), facilitate use of an added HgDataFile over a commit; Rollback: be more sensitive about file changes (file size is not enough: write/rollback leaves it intact); tests
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 607
diff changeset
59 lastKnownTime.put(f, f.lastModified());
607
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
60 }
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
61 }
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
62
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
63 public boolean hasChanged(File f) {
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
64 assert f != null;
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
65 if (lastKnownSize == null) {
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
66 assert f == soleFile;
621
99ad1e3a4e4d RevlogStream: be aware of existence (not HgDataFile), facilitate use of an added HgDataFile over a commit; Rollback: be more sensitive about file changes (file size is not enough: write/rollback leaves it intact); tests
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 607
diff changeset
67 return soleFileSize != f.length() || soleFileTime != f.lastModified();
607
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
68 } else {
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
69 Long lastSize = lastKnownSize.get(f);
621
99ad1e3a4e4d RevlogStream: be aware of existence (not HgDataFile), facilitate use of an added HgDataFile over a commit; Rollback: be more sensitive about file changes (file size is not enough: write/rollback leaves it intact); tests
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 607
diff changeset
70 Long lastTime = lastKnownTime.get(f);
99ad1e3a4e4d RevlogStream: be aware of existence (not HgDataFile), facilitate use of an added HgDataFile over a commit; Rollback: be more sensitive about file changes (file size is not enough: write/rollback leaves it intact); tests
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 607
diff changeset
71 if (lastSize == null || lastTime == null) {
607
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
72 return true;
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
73 }
621
99ad1e3a4e4d RevlogStream: be aware of existence (not HgDataFile), facilitate use of an added HgDataFile over a commit; Rollback: be more sensitive about file changes (file size is not enough: write/rollback leaves it intact); tests
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 607
diff changeset
74 return f.length() != lastSize || f.lastModified() != lastTime;
607
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
75 }
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
76 }
66f1cc23b906 Refresh revlogs if a change to a file has been detected; do not force reload of the whole repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
77 }