annotate src/org/tmatesoft/hg/repo/HgManifest.java @ 599:55b7987c1796

Do not instantiate intermediate arrays
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Fri, 03 May 2013 15:29:26 +0200
parents d29d9dc6c128
children 46f29b73e51e
rev   line source
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df8c67f3006a Basic manifest parsing to analyze what's in there
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1 /*
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2 * Copyright (c) 2010-2013 TMate Software Ltd
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3 *
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4 * This program is free software; you can redistribute it and/or modify
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5 * it under the terms of the GNU General Public License as published by
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6 * the Free Software Foundation; version 2 of the License.
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7 *
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8 * This program is distributed in the hope that it will be useful,
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9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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11 * GNU General Public License for more details.
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12 *
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13 * For information on how to redistribute this software under
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14 * the terms of a license other than GNU General Public License
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15 * contact TMate Software at support@hg4j.com
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16 */
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17 package org.tmatesoft.hg.repo;
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18
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6952d9ce97f1 Handle missing manifest revision case (brought up with Issue 23), do my best to report missing manifests when walking few manifest revisions
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19 import static org.tmatesoft.hg.core.Nodeid.NULL;
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20 import static org.tmatesoft.hg.repo.HgRepository.*;
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21 import static org.tmatesoft.hg.util.LogFacility.Severity.Info;
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22
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23 import java.io.IOException;
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24 import java.util.Arrays;
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25
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ccd7d25e5aea New and better name for HgFileInformer - HgChangesetFileSneaker. Explain (comments) ties between HgManifest, HgDataFile, HgChangesetFileSneaker and reasons for method placement
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26 import org.tmatesoft.hg.core.HgChangesetFileSneaker;
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27 import org.tmatesoft.hg.core.Nodeid;
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28 import org.tmatesoft.hg.internal.ByteVector;
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29 import org.tmatesoft.hg.internal.Callback;
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30 import org.tmatesoft.hg.internal.DataAccess;
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31 import org.tmatesoft.hg.internal.DigestHelper;
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32 import org.tmatesoft.hg.internal.EncodingHelper;
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33 import org.tmatesoft.hg.internal.IdentityPool;
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34 import org.tmatesoft.hg.internal.IntMap;
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35 import org.tmatesoft.hg.internal.IntVector;
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36 import org.tmatesoft.hg.internal.IterateControlMediator;
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37 import org.tmatesoft.hg.internal.Lifecycle;
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38 import org.tmatesoft.hg.internal.RevlogStream;
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39 import org.tmatesoft.hg.repo.HgChangelog.RawChangeset;
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40 import org.tmatesoft.hg.util.CancelSupport;
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41 import org.tmatesoft.hg.util.LogFacility.Severity;
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42 import org.tmatesoft.hg.util.Path;
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43 import org.tmatesoft.hg.util.ProgressSupport;
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44
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46 /**
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47 * Representation of Mercurial manifest file (list of file names and their revisions in a particular changeset)
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48 *
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49 * @see http://mercurial.selenic.com/wiki/Manifest
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50 * @author Artem Tikhomirov
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51 * @author TMate Software Ltd.
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52 */
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53 public final class HgManifest extends Revlog {
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54 private RevisionMapper revisionMap;
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55 private final EncodingHelper encodingHelper;
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56 private final Path.Source pathFactory;
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57
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58 /**
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59 * File flags recorded in manifest
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60 */
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61 public enum Flags {
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62 /**
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63 * Executable bit set
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64 */
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65 Exec,
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66 /**
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67 * Symbolic link
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68 */
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69 Link,
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70 /**
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71 * Regular file
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72 */
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73 RegularFile;
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74
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75 static Flags parse(String flags) {
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76 if ("x".equalsIgnoreCase(flags)) {
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77 return Exec;
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78 }
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79 if ("l".equalsIgnoreCase(flags)) {
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80 return Link;
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81 }
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82 if (flags == null) {
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83 return RegularFile;
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84 }
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85 throw new IllegalStateException(flags);
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86 }
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87
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88 static Flags parse(byte[] data, int start, int length) {
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89 if (length == 0) {
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90 return RegularFile;
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91 }
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92 if (length == 1) {
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93 if (data[start] == 'x') {
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94 return Exec;
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95 }
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96 if (data[start] == 'l') {
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97 return Link;
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98 }
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99 // FALL THROUGH
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100 }
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101 throw new IllegalStateException(new String(data, start, length));
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102 }
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103
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104 String nativeString() {
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105 if (this == Exec) {
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106 return "x";
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107 }
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108 if (this == Link) {
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109 return "l";
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110 }
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111 if (this == RegularFile) {
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112 return "";
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113 }
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114 throw new IllegalStateException(toString());
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115 }
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116
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117 public int fsMode() {
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118 if (this == Exec) {
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119 return 0755;
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120 }
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121 return 0644;
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122 }
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123 }
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124
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125 /*package-local*/ HgManifest(HgRepository hgRepo, RevlogStream content, EncodingHelper eh) {
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126 super(hgRepo, content);
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127 encodingHelper = eh;
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128 pathFactory = hgRepo.getSessionContext().getPathFactory();
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129 }
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130
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131 /**
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132 * Walks manifest revisions that correspond to specified range of changesets. The order in which manifest versions get reported
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133 * to the inspector corresponds to physical order of manifest revisions, not that of changesets (with few exceptions as noted below).
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134 * That is, for cset-manifest revision pairs:
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135 * <pre>
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136 * 3 8
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137 * 4 7
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138 * 5 9
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139 * </pre>
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140 * call <code>walk(3,5, insp)</code> would yield (4,7), (3,8) and (5,9) to the inspector;
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141 * different order of arguments, <code>walk(5, 3, insp)</code>, makes no difference.
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142 *
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143 * <p>Physical layout of mercurial files (revlog) doesn't impose any restriction on whether manifest and changeset revisions shall go
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144 * incrementally, nor it mandates presence of manifest version for a changeset. Thus, there might be changesets that record {@link Nodeid#NULL}
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145 * as corresponding manifest revision. This situation is deemed exceptional now and what would <code>inspector</code> get depends on whether
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146 * <code>start</code> or <code>end</code> arguments point to such changeset, or such changeset happen to be somewhere inside the range
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147 * <code>[start..end]</code>. Implementation does it best to report empty manifests
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148 * (<code>Inspector.begin(HgRepository.NO_REVISION, NULL, csetRevIndex);</code>
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149 * followed immediately by <code>Inspector.end(HgRepository.NO_REVISION)</code>
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150 * when <code>start</code> and/or <code>end</code> point to changeset with no associated
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151 * manifest revision. However, if changeset-manifest revision pairs look like:
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152 * <pre>
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153 * 3 8
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154 * 4 -1 (cset records null revision for manifest)
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155 * 5 9
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156 * </pre>
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157 * call <code>walk(3,5, insp)</code> would yield only (3,8) and (5,9) to the inspector, without additional empty
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158 * <code>Inspector.begin(); Inspector.end()</code> call pair.
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159 *
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160 * @see HgRepository#NO_REVISION
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161 * @param start changelog (not manifest!) revision to begin with
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162 * @param end changelog (not manifest!) revision to stop, inclusive.
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163 * @param inspector manifest revision visitor, can't be <code>null</code>
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164 * @throws HgRuntimeException subclass thereof to indicate issues with the library. <em>Runtime exception</em>
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165 * @throws IllegalArgumentException if inspector callback is <code>null</code>
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166 */
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167 public void walk(int start, int end, final Inspector inspector) throws HgRuntimeException, IllegalArgumentException {
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168 if (inspector == null) {
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169 throw new IllegalArgumentException();
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170 }
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171 final int csetFirst = start <= end ? start : end, csetLast = start > end ? start : end;
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172 int manifestFirst, manifestLast, i = 0;
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173 do {
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174 manifestFirst = fromChangelog(csetFirst+i);
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175 if (manifestFirst == BAD_REVISION) {
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176 inspector.begin(NO_REVISION, NULL, csetFirst+i);
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177 inspector.end(NO_REVISION);
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178 }
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179 i++;
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180 } while (manifestFirst == BAD_REVISION && csetFirst+i <= csetLast);
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181 if (manifestFirst == BAD_REVISION) {
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182 getRepo().getSessionContext().getLog().dump(getClass(), Info, "None of changesets [%d..%d] have associated manifest revision", csetFirst, csetLast);
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183 // we ran through all revisions in [start..end] and none of them had manifest.
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184 // we reported that to inspector and proceeding is done now.
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185 return;
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186 }
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187 i = 0;
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188 do {
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189 manifestLast = fromChangelog(csetLast-i);
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190 if (manifestLast == BAD_REVISION) {
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191 inspector.begin(NO_REVISION, NULL, csetLast-i);
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192 inspector.end(NO_REVISION);
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193 }
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194 i++;
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195 } while (manifestLast == BAD_REVISION && csetLast-i >= csetFirst);
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196 if (manifestLast == BAD_REVISION) {
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197 // hmm, manifestFirst != BAD_REVISION here, hence there's i from [csetFirst..csetLast] for which manifest entry exists,
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198 // and thus it's impossible to run into manifestLast == BAD_REVISION. Nevertheless, never hurts to check.
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199 throw new HgInvalidStateException(String.format("Manifest %d-%d(!) for cset range [%d..%d] ", manifestFirst, manifestLast, csetFirst, csetLast));
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200 }
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201 if (manifestLast < manifestFirst) {
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202 // there are tool-constructed repositories that got order of changeset revisions completely different from that of manifest
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203 int x = manifestLast;
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204 manifestLast = manifestFirst;
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205 manifestFirst = x;
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206 }
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207 content.iterate(manifestFirst, manifestLast, true, new ManifestParser(inspector));
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208 }
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209
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210 /**
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211 * "Sparse" iteration of the manifest, more effective than accessing revisions one by one.
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212 * <p> Inspector is invoked for each changeset revision supplied, even when there's no manifest
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213 * revision associated with a changeset (@see {@link #walk(int, int, Inspector)} for more details when it happens). Order inspector
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214 * gets invoked doesn't resemble order of changeset revisions supplied, manifest revisions are reported in the order they appear
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215 * in manifest revlog (with exception of changesets with missing manifest that may be reported in any order).
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216 *
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217 * @param inspector manifest revision visitor, can't be <code>null</code>
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218 * @param revisionIndexes local indexes of changesets to visit, non-<code>null</code>
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219 * @throws HgRuntimeException subclass thereof to indicate issues with the library. <em>Runtime exception</em>
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220 * @throws InvalidArgumentException if supplied arguments are <code>null</code>s
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221 */
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222 public void walk(final Inspector inspector, int... revisionIndexes) throws HgRuntimeException, IllegalArgumentException {
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223 if (inspector == null || revisionIndexes == null) {
254
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224 throw new IllegalArgumentException();
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225 }
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226 int[] manifestRevs = toManifestRevisionIndexes(revisionIndexes, inspector);
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227 content.iterate(manifestRevs, true, new ManifestParser(inspector));
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228 }
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229
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230 //
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231 /**
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232 * Tells manifest revision number that corresponds to the given changeset. May return {@link HgRepository#BAD_REVISION}
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233 * if changeset has no associated manifest (cset records NULL nodeid for manifest).
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234 * @return manifest revision index, non-negative, or {@link HgRepository#BAD_REVISION}.
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235 * @throws HgInvalidRevisionException if method argument specifies non-existent revision index
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236 * @throws HgInvalidControlFileException if access to revlog index/data entry failed
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237 */
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238 /*package-local*/ int fromChangelog(int changesetRevisionIndex) throws HgInvalidRevisionException, HgInvalidControlFileException {
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239 if (HgInternals.wrongRevisionIndex(changesetRevisionIndex)) {
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240 throw new HgInvalidRevisionException(changesetRevisionIndex);
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241 }
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242 if (changesetRevisionIndex == HgRepository.WORKING_COPY || changesetRevisionIndex == HgRepository.BAD_REVISION) {
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243 throw new HgInvalidRevisionException("Can't use constants like WORKING_COPY or BAD_REVISION", null, changesetRevisionIndex);
257
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244 }
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245 // revisionNumber == TIP is processed by RevisionMapper
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246 if (revisionMap == null) {
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247 revisionMap = new RevisionMapper(getRepo());
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248 content.iterate(0, TIP, false, revisionMap);
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249 }
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250 return revisionMap.at(changesetRevisionIndex);
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251 }
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252
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253 /**
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254 * Extracts file revision as it was known at the time of given changeset.
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255 * <p>For more thorough details about file at specific changeset, use {@link HgChangesetFileSneaker}.
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256 * <p>To visit few changesets for the same file, use {@link #walkFileRevisions(Path, Inspector, int...)}
232
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257 *
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258 * @see #walkFileRevisions(Path, Inspector, int...)
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259 * @see HgChangesetFileSneaker
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260 * @param changelogRevisionIndex local changeset index
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261 * @param file path to file in question
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262 * @return file revision or <code>null</code> if manifest at specified revision doesn't list such file
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263 * @throws HgRuntimeException subclass thereof to indicate issues with the library. <em>Runtime exception</em>
232
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264 */
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265 public Nodeid getFileRevision(int changelogRevisionIndex, final Path file) throws HgInvalidRevisionException, HgInvalidControlFileException {
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266 // there's no need for HgDataFile to own this method, or get a delegate
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267 // as most of HgDataFile API is using file revision indexes, and there's easy step from file revision index to
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268 // both file revision and changeset revision index. But there's no easy way to go from changesetRevisionIndex to
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269 // file revision (the task this method solves), except for HgFileInformer
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270 // I feel methods dealing with changeset indexes shall be more exposed in HgChangelog and HgManifest API.
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271 // TODO need tests (e.g. pass TIP here to see resMap.get(-1) doesn't fail)
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272 int manifestRevIndex = fromChangelog(changelogRevisionIndex);
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273 if (manifestRevIndex == BAD_REVISION) {
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274 return null;
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275 }
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276 IntMap<Nodeid> resMap = new IntMap<Nodeid>(3);
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277 FileLookupInspector parser = new FileLookupInspector(encodingHelper, file, resMap, null);
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278 parser.walk(manifestRevIndex, content);
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279 assert resMap.size() <= 1; // size() == 0 if file wasn't found
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280 // can't use changelogRevisionIndex as key - it might have been TIP
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281 return resMap.size() == 0 ? null : resMap.get(resMap.firstKey());
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282 }
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283
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284 /**
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285 * Visit file revisions as they were recorded at the time of given changesets. Same file revision may be reported as many times as
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286 * there are changesets that refer to that revision. Both {@link Inspector#begin(int, Nodeid, int)} and {@link Inspector#end(int)}
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287 * with appropriate values are invoked around {@link Inspector#next(Nodeid, Path, Flags)} call for the supplied file
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288 *
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289 * <p>NOTE, this method doesn't respect return values from callback (i.e. to stop iteration), as it's lookup of a single file
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290 * and canceling it seems superfluous. However, this may change in future and it's recommended to return <code>true</code> from
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291 * all {@link Inspector} methods.
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292 *
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293 * @see #getFileRevision(int, Path)
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294 * @param file path of interest
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295 * @param inspector callback to receive details about selected file
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296 * @param changelogRevisionIndexes changeset indexes to visit
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297 * @throws HgRuntimeException subclass thereof to indicate issues with the library. <em>Runtime exception</em>
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298 */
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299 public void walkFileRevisions(Path file, Inspector inspector, int... changelogRevisionIndexes) throws HgRuntimeException {
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300 if (file == null || inspector == null || changelogRevisionIndexes == null) {
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301 throw new IllegalArgumentException();
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302 }
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303 // TODO [post-1.0] need tests. There's Main#checkWalkFileRevisions that may be a starting point
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304 int[] manifestRevIndexes = toManifestRevisionIndexes(changelogRevisionIndexes, null);
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305 FileLookupInspector parser = new FileLookupInspector(encodingHelper, file, inspector);
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306 parser.walk(manifestRevIndexes, content);
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307 }
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308
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309 /**
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310 * Extract file {@link Flags flags} as they were recorded in appropriate manifest version.
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311 *
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312 * @see HgDataFile#getFlags(int)
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313 * @param changesetRevIndex changeset revision index
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314 * @param file path to look up
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315 * @return one of predefined enum values, or <code>null</code> if file was not known in the specified revision
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316 * @throws HgRuntimeException subclass thereof to indicate issues with the library. <em>Runtime exception</em>
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317 */
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318 public Flags getFileFlags(int changesetRevIndex, Path file) throws HgInvalidRevisionException, HgInvalidControlFileException {
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319 int manifestRevIdx = fromChangelog(changesetRevIndex);
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320 IntMap<Flags> resMap = new IntMap<Flags>(2);
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321 FileLookupInspector parser = new FileLookupInspector(encodingHelper, file, null, resMap);
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322 parser.walk(manifestRevIdx, content);
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323 assert resMap.size() <= 1; // size() == 0 if not found
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324 // can't use changesetRevIndex as key - it might have been TIP
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diff changeset
325 return resMap.size() == 0 ? null : resMap.get(resMap.firstKey());
415
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326 }
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327
326
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328
390
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329 /**
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330 * @param changelogRevisionIndexes non-null
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331 * @param inspector may be null if reporting of missing manifests is not needed
403
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332 * @throws HgInvalidRevisionException if arguments specify non-existent revision index
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333 * @throws IllegalArgumentException if any index argument is not a revision index
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334 * @throws HgInvalidControlFileException if access to revlog index/data entry failed
390
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335 */
403
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336 private int[] toManifestRevisionIndexes(int[] changelogRevisionIndexes, Inspector inspector) throws HgInvalidRevisionException, HgInvalidControlFileException {
368
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337 int[] manifestRevs = new int[changelogRevisionIndexes.length];
326
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338 boolean needsSort = false;
390
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339 int j = 0;
367
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340 for (int i = 0; i < changelogRevisionIndexes.length; i++) {
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341 final int manifestRevisionIndex = fromChangelog(changelogRevisionIndexes[i]);
403
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342 if (manifestRevisionIndex == BAD_REVISION) {
390
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343 if (inspector != null) {
423
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344 inspector.begin(NO_REVISION, NULL, changelogRevisionIndexes[i]);
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345 inspector.end(NO_REVISION);
390
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346 }
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347 // othrwise, ignore changeset without manifest
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348 } else {
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349 manifestRevs[j] = manifestRevisionIndex;
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350 if (j > 0 && manifestRevs[j-1] > manifestRevisionIndex) {
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351 needsSort = true;
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352 }
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353 j++;
326
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354 }
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355 }
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356 if (needsSort) {
390
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357 Arrays.sort(manifestRevs, 0, j);
326
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358 }
390
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359 if (j == manifestRevs.length) {
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360 return manifestRevs;
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361 } else {
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362 int[] rv = new int[j];
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363 //Arrays.copyOfRange
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364 System.arraycopy(manifestRevs, 0, rv, 0, j);
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365 return rv;
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366 }
326
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367 }
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368
423
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369 @Callback
19
40532cdc92fc Inspector (visitor) for manifest
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370 public interface Inspector {
285
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371 /**
537
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372 * Denotes entering specific manifest revision, separate entries are
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373 * reported with subsequence {@link #next(Nodeid, Path, Flags)} calls.
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374 *
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375 * @param manifestRevisionIndex local revision index of the inspected revision
537
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376 * @param manifestRevision revision of the manifest we're about to iterate through
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377 * @param changelogRevisionIndex local revision index of changelog this manifest points to
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378 * @return <code>true</code> to continue iteration, <code>false</code> to stop
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379 */
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380 boolean begin(int manifestRevisionIndex, Nodeid manifestRevision, int changelogRevisionIndex);
537
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381
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382
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383 /**
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384 * Reports each manifest entry
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385 *
415
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386 * @param nid file revision
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387 * @param fname file name
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388 * @param flags one of {@link HgManifest.Flags} constants, not <code>null</code>
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389 * @return <code>true</code> to continue iteration, <code>false</code> to stop
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390 */
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391 boolean next(Nodeid nid, Path fname, Flags flags);
537
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392
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393 /**
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394 * Denotes leaving specific manifest revision, after all entries were reported using {@link #next(Nodeid, Path, Flags)}
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395 *
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396 * @param manifestRevisionIndex indicates manifest revision, corresponds to opening {@link #begin(int, Nodeid, int)}
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397 * @return <code>true</code> to continue iteration, <code>false</code> to stop
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398 */
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399 boolean end(int manifestRevisionIndex);
267
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400 }
424
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401
268
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402 /**
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403 * When Pool uses Strings directly,
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404 * ManifestParser creates new String instance with new char[] value, and does byte->char conversion.
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405 * For cpython repo, walk(0..10k), there are over 16 million filenames, of them only 3020 unique.
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406 * This means there are 15.9 million useless char[] instances and byte->char conversions
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407 *
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408 * When String (Path) is wrapped into {@link PathProxy}, there's extra overhead of byte[] representation
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409 * of the String, but these are only for unique Strings (Paths) (3020 in the example above). Besides, I save
268
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410 * useless char[] and byte->char conversions.
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411 */
571
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412 private final class PathProxy {
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413 private byte[] data;
268
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414 private int start;
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415 private final int hash, length;
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416 private Path result;
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417
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418 public PathProxy(byte[] data, int start, int length) {
267
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419 this.data = data;
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420 this.start = start;
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421 this.length = length;
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422
268
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423 // copy from String.hashCode(). In fact, not necessarily match result of String(data).hashCode
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424 // just need some nice algorithm here
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425 int h = 0;
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426 byte[] d = data;
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427 for (int i = 0, off = start, len = length; i < len; i++) {
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428 h = 31 * h + d[off++];
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429 }
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430 hash = h;
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431 }
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432
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433 @Override
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434 public boolean equals(Object obj) {
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435 if (false == obj instanceof PathProxy) {
267
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436 return false;
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437 }
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438 PathProxy o = (PathProxy) obj;
267
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439 if (o.result != null && result != null) {
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440 return result.equals(o.result);
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diff changeset
441 }
268
c5980f287cc4 Use StringProxy when parsing manifest to minimize number of useless conversions and array instances
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diff changeset
442 if (o.length != length || o.hash != hash) {
267
ec921ef0628e Revert manifest parser changes - no single string and back to HashMap Pool
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parents: 266
diff changeset
443 return false;
ec921ef0628e Revert manifest parser changes - no single string and back to HashMap Pool
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parents: 266
diff changeset
444 }
ec921ef0628e Revert manifest parser changes - no single string and back to HashMap Pool
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diff changeset
445 for (int i = 0, x = o.start, y = start; i < length; i++) {
ec921ef0628e Revert manifest parser changes - no single string and back to HashMap Pool
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parents: 266
diff changeset
446 if (o.data[x++] != data[y++]) {
ec921ef0628e Revert manifest parser changes - no single string and back to HashMap Pool
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parents: 266
diff changeset
447 return false;
ec921ef0628e Revert manifest parser changes - no single string and back to HashMap Pool
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parents: 266
diff changeset
448 }
ec921ef0628e Revert manifest parser changes - no single string and back to HashMap Pool
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parents: 266
diff changeset
449 }
ec921ef0628e Revert manifest parser changes - no single string and back to HashMap Pool
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diff changeset
450 return true;
ec921ef0628e Revert manifest parser changes - no single string and back to HashMap Pool
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parents: 266
diff changeset
451 }
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diff changeset
452 @Override
ec921ef0628e Revert manifest parser changes - no single string and back to HashMap Pool
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diff changeset
453 public int hashCode() {
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parents: 266
diff changeset
454 return hash;
ec921ef0628e Revert manifest parser changes - no single string and back to HashMap Pool
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parents: 266
diff changeset
455 }
ec921ef0628e Revert manifest parser changes - no single string and back to HashMap Pool
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parents: 266
diff changeset
456
285
6dbbc53fc46d Use Path instead of plain String for manifest file names
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parents: 268
diff changeset
457 public Path freeze() {
267
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parents: 266
diff changeset
458 if (result == null) {
574
88afffd39899 Improve memory consumption of HgManifest#getFileRevision(): avoid extra byte[] instances
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 571
diff changeset
459 Path.Source pf = HgManifest.this.pathFactory;
88afffd39899 Improve memory consumption of HgManifest#getFileRevision(): avoid extra byte[] instances
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 571
diff changeset
460 result = pf.path(HgManifest.this.encodingHelper.fromManifest(data, start, length));
268
c5980f287cc4 Use StringProxy when parsing manifest to minimize number of useless conversions and array instances
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diff changeset
461 // release reference to bigger data array, make a copy of relevant part only
285
6dbbc53fc46d Use Path instead of plain String for manifest file names
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parents: 268
diff changeset
462 // use original bytes, not those from String above to avoid cache misses due to different encodings
268
c5980f287cc4 Use StringProxy when parsing manifest to minimize number of useless conversions and array instances
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diff changeset
463 byte[] d = new byte[length];
c5980f287cc4 Use StringProxy when parsing manifest to minimize number of useless conversions and array instances
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 267
diff changeset
464 System.arraycopy(data, start, d, 0, length);
c5980f287cc4 Use StringProxy when parsing manifest to minimize number of useless conversions and array instances
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parents: 267
diff changeset
465 data = d;
c5980f287cc4 Use StringProxy when parsing manifest to minimize number of useless conversions and array instances
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diff changeset
466 start = 0;
267
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diff changeset
467 }
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diff changeset
468 return result;
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parents: 266
diff changeset
469 }
ec921ef0628e Revert manifest parser changes - no single string and back to HashMap Pool
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diff changeset
470 }
196
e2115da4cf6a Pool objects to avoid memory polution with duplicates
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 157
diff changeset
471
571
e4ee4bf4c7d0 Let session context control creation of Path instances
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 550
diff changeset
472 private class ManifestParser implements RevlogStream.Inspector, Lifecycle {
196
e2115da4cf6a Pool objects to avoid memory polution with duplicates
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diff changeset
473 private final Inspector inspector;
431
12f668401613 FIXMEs: awkward API refactored, what need to be internal got hidden; public aspects got captured in slim interfaces
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parents: 426
diff changeset
474 private IdentityPool<Nodeid> nodeidPool, thisRevPool;
12f668401613 FIXMEs: awkward API refactored, what need to be internal got hidden; public aspects got captured in slim interfaces
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 426
diff changeset
475 private final IdentityPool<PathProxy> fnamePool;
266
0a2f445de774 Improve manifest parsing: reduce number of arrays instantiated for Nodeid
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 264
diff changeset
476 private byte[] nodeidLookupBuffer = new byte[20]; // get reassigned each time new Nodeid is added to pool
312
f9f3e9b67ccc Facilitate cancellation and progress reporting in changelog and manifest iterations
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 304
diff changeset
477 private final ProgressSupport progressHelper;
f9f3e9b67ccc Facilitate cancellation and progress reporting in changelog and manifest iterations
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 304
diff changeset
478 private IterateControlMediator iterateControl;
262
3dcd3dd90c77 Improve manifest parsing: decode bytes to chars once, minimize arraycopy on String instantiation, keep set of file revisions from previous manifest only
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parents: 257
diff changeset
479
571
e4ee4bf4c7d0 Let session context control creation of Path instances
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parents: 550
diff changeset
480 public ManifestParser(Inspector delegate) {
196
e2115da4cf6a Pool objects to avoid memory polution with duplicates
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parents: 157
diff changeset
481 assert delegate != null;
e2115da4cf6a Pool objects to avoid memory polution with duplicates
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parents: 157
diff changeset
482 inspector = delegate;
431
12f668401613 FIXMEs: awkward API refactored, what need to be internal got hidden; public aspects got captured in slim interfaces
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 426
diff changeset
483 nodeidPool = new IdentityPool<Nodeid>();
12f668401613 FIXMEs: awkward API refactored, what need to be internal got hidden; public aspects got captured in slim interfaces
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 426
diff changeset
484 fnamePool = new IdentityPool<PathProxy>();
12f668401613 FIXMEs: awkward API refactored, what need to be internal got hidden; public aspects got captured in slim interfaces
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 426
diff changeset
485 thisRevPool = new IdentityPool<Nodeid>();
312
f9f3e9b67ccc Facilitate cancellation and progress reporting in changelog and manifest iterations
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parents: 304
diff changeset
486 progressHelper = ProgressSupport.Factory.get(delegate);
196
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parents: 157
diff changeset
487 }
268
c5980f287cc4 Use StringProxy when parsing manifest to minimize number of useless conversions and array instances
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parents: 267
diff changeset
488
423
9c9c442b5f2e Major refactoring of exception handling. Low-level API uses RuntimeExceptions, while checked are left for higher level
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 421
diff changeset
489 public void next(int revisionNumber, int actualLen, int baseRevision, int linkRevision, int parent1Revision, int parent2Revision, byte[] nodeid, DataAccess da) {
196
e2115da4cf6a Pool objects to avoid memory polution with duplicates
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 157
diff changeset
490 try {
312
f9f3e9b67ccc Facilitate cancellation and progress reporting in changelog and manifest iterations
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 304
diff changeset
491 if (!inspector.begin(revisionNumber, new Nodeid(nodeid, true), linkRevision)) {
f9f3e9b67ccc Facilitate cancellation and progress reporting in changelog and manifest iterations
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 304
diff changeset
492 iterateControl.stop();
f9f3e9b67ccc Facilitate cancellation and progress reporting in changelog and manifest iterations
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 304
diff changeset
493 return;
f9f3e9b67ccc Facilitate cancellation and progress reporting in changelog and manifest iterations
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 304
diff changeset
494 }
372
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 368
diff changeset
495 if (!da.isEmpty()) {
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 368
diff changeset
496 // although unlikely, manifest entry may be empty, when all files have been deleted from the repository
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 368
diff changeset
497 Path fname = null;
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 368
diff changeset
498 Flags flags = null;
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 368
diff changeset
499 Nodeid nid = null;
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 368
diff changeset
500 int i;
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 368
diff changeset
501 byte[] data = da.byteArray();
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 368
diff changeset
502 for (i = 0; i < actualLen; i++) {
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 368
diff changeset
503 int x = i;
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 368
diff changeset
504 for( ; data[i] != '\n' && i < actualLen; i++) {
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 368
diff changeset
505 if (fname == null && data[i] == 0) {
571
e4ee4bf4c7d0 Let session context control creation of Path instances
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 550
diff changeset
506 PathProxy px = fnamePool.unify(new PathProxy(data, x, i - x));
372
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 368
diff changeset
507 // if (cached = fnamePool.unify(px))== px then cacheMiss, else cacheHit
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 368
diff changeset
508 // cpython 0..10k: hits: 15 989 152, misses: 3020
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 368
diff changeset
509 fname = px.freeze();
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 368
diff changeset
510 x = i+1;
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 368
diff changeset
511 }
196
e2115da4cf6a Pool objects to avoid memory polution with duplicates
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 157
diff changeset
512 }
372
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 368
diff changeset
513 if (i < actualLen) {
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 368
diff changeset
514 assert data[i] == '\n';
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 368
diff changeset
515 int nodeidLen = i - x < 40 ? i-x : 40; // if > 40, there are flags
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 368
diff changeset
516 DigestHelper.ascii2bin(data, x, nodeidLen, nodeidLookupBuffer); // ignore return value as it's unlikely to have NULL in manifest
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 368
diff changeset
517 nid = new Nodeid(nodeidLookupBuffer, false); // this Nodeid is for pool lookup only, mock object
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 368
diff changeset
518 Nodeid cached = nodeidPool.unify(nid);
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 368
diff changeset
519 if (cached == nid) {
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 368
diff changeset
520 // buffer now belongs to the cached nodeid
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 368
diff changeset
521 nodeidLookupBuffer = new byte[20];
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 368
diff changeset
522 } else {
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 368
diff changeset
523 nid = cached; // use existing version, discard the lookup object
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 368
diff changeset
524 } // for cpython 0..10k, cache hits are 15 973 301, vs 18871 misses.
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 368
diff changeset
525 thisRevPool.record(nid); // memorize revision for the next iteration.
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 368
diff changeset
526 if (nodeidLen + x < i) {
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 368
diff changeset
527 // 'x' and 'l' for executable bits and symlinks?
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 368
diff changeset
528 // hg --debug manifest shows 644 for each regular file in my repo
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 368
diff changeset
529 // for cpython 0..10k, there are 4361062 flag checks, and there's only 1 unique flag
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 368
diff changeset
530 flags = Flags.parse(data, x + nodeidLen, i-x-nodeidLen);
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 368
diff changeset
531 } else {
415
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
532 flags = Flags.RegularFile;
372
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 368
diff changeset
533 }
424
6437d261048a Deprecated code removed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 423
diff changeset
534 boolean good2go = inspector.next(nid, fname, flags);
372
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 368
diff changeset
535 if (!good2go) {
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 368
diff changeset
536 iterateControl.stop();
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 368
diff changeset
537 return;
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 368
diff changeset
538 }
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 368
diff changeset
539 }
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 368
diff changeset
540 nid = null;
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 368
diff changeset
541 fname = null;
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 368
diff changeset
542 flags = null;
196
e2115da4cf6a Pool objects to avoid memory polution with duplicates
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 157
diff changeset
543 }
e2115da4cf6a Pool objects to avoid memory polution with duplicates
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 157
diff changeset
544 }
312
f9f3e9b67ccc Facilitate cancellation and progress reporting in changelog and manifest iterations
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 304
diff changeset
545 if (!inspector.end(revisionNumber)) {
f9f3e9b67ccc Facilitate cancellation and progress reporting in changelog and manifest iterations
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 304
diff changeset
546 iterateControl.stop();
f9f3e9b67ccc Facilitate cancellation and progress reporting in changelog and manifest iterations
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 304
diff changeset
547 return;
f9f3e9b67ccc Facilitate cancellation and progress reporting in changelog and manifest iterations
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 304
diff changeset
548 }
262
3dcd3dd90c77 Improve manifest parsing: decode bytes to chars once, minimize arraycopy on String instantiation, keep set of file revisions from previous manifest only
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 257
diff changeset
549 //
3dcd3dd90c77 Improve manifest parsing: decode bytes to chars once, minimize arraycopy on String instantiation, keep set of file revisions from previous manifest only
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 257
diff changeset
550 // keep only actual file revisions, found at this version
3dcd3dd90c77 Improve manifest parsing: decode bytes to chars once, minimize arraycopy on String instantiation, keep set of file revisions from previous manifest only
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 257
diff changeset
551 // (next manifest is likely to refer to most of them, although in specific cases
3dcd3dd90c77 Improve manifest parsing: decode bytes to chars once, minimize arraycopy on String instantiation, keep set of file revisions from previous manifest only
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 257
diff changeset
552 // like commit in another branch a lot may be useless)
3dcd3dd90c77 Improve manifest parsing: decode bytes to chars once, minimize arraycopy on String instantiation, keep set of file revisions from previous manifest only
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 257
diff changeset
553 nodeidPool.clear();
431
12f668401613 FIXMEs: awkward API refactored, what need to be internal got hidden; public aspects got captured in slim interfaces
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 426
diff changeset
554 IdentityPool<Nodeid> t = nodeidPool;
262
3dcd3dd90c77 Improve manifest parsing: decode bytes to chars once, minimize arraycopy on String instantiation, keep set of file revisions from previous manifest only
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 257
diff changeset
555 nodeidPool = thisRevPool;
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: 262
diff changeset
556 thisRevPool = t;
313
c1e3c18fd2f2 Test manifest cancellation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 312
diff changeset
557 iterateControl.checkCancelled();
312
f9f3e9b67ccc Facilitate cancellation and progress reporting in changelog and manifest iterations
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 304
diff changeset
558 progressHelper.worked(1);
196
e2115da4cf6a Pool objects to avoid memory polution with duplicates
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 157
diff changeset
559 } catch (IOException ex) {
423
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diff changeset
560 throw new HgInvalidControlFileException("Failed reading manifest", ex, null).setRevisionIndex(revisionNumber);
196
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561 }
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562 }
312
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diff changeset
563
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diff changeset
564 public void start(int count, Callback callback, Object token) {
f9f3e9b67ccc Facilitate cancellation and progress reporting in changelog and manifest iterations
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diff changeset
565 CancelSupport cs = CancelSupport.Factory.get(inspector, null);
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diff changeset
566 iterateControl = new IterateControlMediator(cs, callback);
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diff changeset
567 progressHelper.start(count);
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diff changeset
568 }
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diff changeset
569
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diff changeset
570 public void finish(Object token) {
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diff changeset
571 progressHelper.done();
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diff changeset
572 }
196
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573 }
218
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diff changeset
574
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diff changeset
575 private static class RevisionMapper implements RevlogStream.Inspector, Lifecycle {
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576
403
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diff changeset
577 private final int changelogRevisionCount;
218
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578 private int[] changelog2manifest;
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diff changeset
579 private final HgRepository repo;
598
d29d9dc6c128 Utilize the fact nodeids are very different and are read anyway to speed up reverse lookup
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diff changeset
580 private int[] manifestNodeidHashes; // first 4 bytes of manifest nodeid at corresponding index
218
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diff changeset
581
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582 public RevisionMapper(HgRepository hgRepo) {
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583 repo = hgRepo;
403
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diff changeset
584 changelogRevisionCount = repo.getChangelog().getRevisionCount();
218
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diff changeset
585 }
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diff changeset
586
403
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diff changeset
587 /**
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diff changeset
588 * Get index of manifest revision that corresponds to specified changeset
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diff changeset
589 * @param changesetRevisionIndex non-negative index of changelog revision, or {@link HgRepository#TIP}
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diff changeset
590 * @return index of manifest revision, or {@link HgRepository#BAD_REVISION} if changeset doesn't reference a valid manifest
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diff changeset
591 * @throws HgInvalidRevisionException if method argument specifies non-existent revision index
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diff changeset
592 */
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diff changeset
593 public int at(int changesetRevisionIndex) throws HgInvalidRevisionException {
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diff changeset
594 if (changesetRevisionIndex == TIP) {
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diff changeset
595 changesetRevisionIndex = changelogRevisionCount - 1;
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diff changeset
596 }
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diff changeset
597 if (changesetRevisionIndex >= changelogRevisionCount) {
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diff changeset
598 throw new HgInvalidRevisionException(changesetRevisionIndex);
257
f39fb6b3cc76 Handle revision constants correctly
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diff changeset
599 }
218
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diff changeset
600 if (changelog2manifest != null) {
403
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diff changeset
601 return changelog2manifest[changesetRevisionIndex];
218
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diff changeset
602 }
403
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diff changeset
603 return changesetRevisionIndex;
218
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diff changeset
604 }
047b1dec7a04 Issue 7: Correctly handle manifest and changelog with different number of (or non-matching) revisions
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parents: 196
diff changeset
605
324
283b294d1079 Explore alternatives to access file-changelog combined history
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parents: 321
diff changeset
606 // XXX likely can be replaced with Revlog.RevisionInspector
218
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diff changeset
607 public void next(int revisionNumber, int actualLen, int baseRevision, int linkRevision, int parent1Revision, int parent2Revision, byte[] nodeid, DataAccess data) {
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diff changeset
608 if (changelog2manifest != null) {
220
8de327242aa0 Basic information about branches
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diff changeset
609 // next assertion is not an error, rather assumption check, which is too development-related to be explicit exception -
8de327242aa0 Basic information about branches
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diff changeset
610 // I just wonder if there are manifests that have two entries pointing to single changeset. It seems unrealistic, though -
8de327242aa0 Basic information about branches
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diff changeset
611 // changeset records one and only one manifest nodeid
403
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diff changeset
612 assert changelog2manifest[linkRevision] == BAD_REVISION : String.format("revision:%d, link:%d, already linked to revision:%d", revisionNumber, linkRevision, changelog2manifest[linkRevision]);
218
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diff changeset
613 changelog2manifest[linkRevision] = revisionNumber;
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diff changeset
614 } else {
047b1dec7a04 Issue 7: Correctly handle manifest and changelog with different number of (or non-matching) revisions
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diff changeset
615 if (revisionNumber != linkRevision) {
403
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diff changeset
616 changelog2manifest = new int[changelogRevisionCount];
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diff changeset
617 Arrays.fill(changelog2manifest, BAD_REVISION);
218
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diff changeset
618 for (int i = 0; i < revisionNumber; changelog2manifest[i] = i, i++)
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diff changeset
619 ;
047b1dec7a04 Issue 7: Correctly handle manifest and changelog with different number of (or non-matching) revisions
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diff changeset
620 changelog2manifest[linkRevision] = revisionNumber;
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diff changeset
621 }
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diff changeset
622 }
598
d29d9dc6c128 Utilize the fact nodeids are very different and are read anyway to speed up reverse lookup
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diff changeset
623 manifestNodeidHashes[revisionNumber] = Nodeid.hashCode(nodeid);
218
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diff changeset
624 }
047b1dec7a04 Issue 7: Correctly handle manifest and changelog with different number of (or non-matching) revisions
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diff changeset
625
047b1dec7a04 Issue 7: Correctly handle manifest and changelog with different number of (or non-matching) revisions
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diff changeset
626 public void start(int count, Callback callback, Object token) {
403
2747b0723867 FIXMEs: work on exceptions and javadoc
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diff changeset
627 if (count != changelogRevisionCount) {
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diff changeset
628 assert count < changelogRevisionCount; // no idea what to do if manifest has more revisions than changelog
218
047b1dec7a04 Issue 7: Correctly handle manifest and changelog with different number of (or non-matching) revisions
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diff changeset
629 // the way how manifest may contain more revisions than changelog, as I can imagine, is a result of
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diff changeset
630 // some kind of an import tool (e.g. from SVN or CVS), that creates manifest and changelog independently.
047b1dec7a04 Issue 7: Correctly handle manifest and changelog with different number of (or non-matching) revisions
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diff changeset
631 // Note, it's pure guess, I didn't see such repository yet (although the way manifest revisions
047b1dec7a04 Issue 7: Correctly handle manifest and changelog with different number of (or non-matching) revisions
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diff changeset
632 // in cpython repo are numbered makes me think aforementioned way)
403
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diff changeset
633 changelog2manifest = new int[changelogRevisionCount];
2747b0723867 FIXMEs: work on exceptions and javadoc
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diff changeset
634 Arrays.fill(changelog2manifest, BAD_REVISION);
218
047b1dec7a04 Issue 7: Correctly handle manifest and changelog with different number of (or non-matching) revisions
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diff changeset
635 }
598
d29d9dc6c128 Utilize the fact nodeids are very different and are read anyway to speed up reverse lookup
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parents: 597
diff changeset
636 manifestNodeidHashes = new int[count];
218
047b1dec7a04 Issue 7: Correctly handle manifest and changelog with different number of (or non-matching) revisions
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diff changeset
637 }
047b1dec7a04 Issue 7: Correctly handle manifest and changelog with different number of (or non-matching) revisions
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diff changeset
638
047b1dec7a04 Issue 7: Correctly handle manifest and changelog with different number of (or non-matching) revisions
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diff changeset
639 public void finish(Object token) {
047b1dec7a04 Issue 7: Correctly handle manifest and changelog with different number of (or non-matching) revisions
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diff changeset
640 if (changelog2manifest == null) {
047b1dec7a04 Issue 7: Correctly handle manifest and changelog with different number of (or non-matching) revisions
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diff changeset
641 return;
047b1dec7a04 Issue 7: Correctly handle manifest and changelog with different number of (or non-matching) revisions
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diff changeset
642 }
047b1dec7a04 Issue 7: Correctly handle manifest and changelog with different number of (or non-matching) revisions
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diff changeset
643 // I assume there'd be not too many revisions we don't know manifest of
597
c895b5556937 Wrap manifest revision map completion into single file access
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 583
diff changeset
644 IntVector undefinedChangelogRevision = new IntVector();
218
047b1dec7a04 Issue 7: Correctly handle manifest and changelog with different number of (or non-matching) revisions
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diff changeset
645 for (int i = 0; i < changelog2manifest.length; i++) {
403
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diff changeset
646 if (changelog2manifest[i] == BAD_REVISION) {
218
047b1dec7a04 Issue 7: Correctly handle manifest and changelog with different number of (or non-matching) revisions
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diff changeset
647 undefinedChangelogRevision.add(i);
047b1dec7a04 Issue 7: Correctly handle manifest and changelog with different number of (or non-matching) revisions
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diff changeset
648 }
047b1dec7a04 Issue 7: Correctly handle manifest and changelog with different number of (or non-matching) revisions
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diff changeset
649 }
597
c895b5556937 Wrap manifest revision map completion into single file access
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diff changeset
650 if (undefinedChangelogRevision.size() > 0) {
598
d29d9dc6c128 Utilize the fact nodeids are very different and are read anyway to speed up reverse lookup
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parents: 597
diff changeset
651 final long t1 = System.nanoTime();
597
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parents: 583
diff changeset
652 final IntMap<Nodeid> missingCsetToManifest = new IntMap<Nodeid>(undefinedChangelogRevision.size());
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diff changeset
653 int[] undefinedClogRevs = undefinedChangelogRevision.toArray();
c895b5556937 Wrap manifest revision map completion into single file access
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parents: 583
diff changeset
654 // undefinedChangelogRevision is sorted by the nature it's created
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parents: 583
diff changeset
655 repo.getChangelog().rangeInternal(new HgChangelog.Inspector() {
c895b5556937 Wrap manifest revision map completion into single file access
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diff changeset
656
c895b5556937 Wrap manifest revision map completion into single file access
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diff changeset
657 public void next(int revisionIndex, Nodeid nodeid, RawChangeset cset) {
c895b5556937 Wrap manifest revision map completion into single file access
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diff changeset
658 missingCsetToManifest.put(revisionIndex, cset.manifest());
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diff changeset
659 }
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diff changeset
660 }, undefinedClogRevs);
c895b5556937 Wrap manifest revision map completion into single file access
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parents: 583
diff changeset
661 assert missingCsetToManifest.size() == undefinedChangelogRevision.size();
598
d29d9dc6c128 Utilize the fact nodeids are very different and are read anyway to speed up reverse lookup
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parents: 597
diff changeset
662 final long t2 = System.nanoTime();
597
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diff changeset
663 for (int u : undefinedClogRevs) {
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parents: 583
diff changeset
664 Nodeid manifest = missingCsetToManifest.get(u);
c895b5556937 Wrap manifest revision map completion into single file access
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parents: 583
diff changeset
665 if (manifest == null || manifest.isNull()) {
c895b5556937 Wrap manifest revision map completion into single file access
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parents: 583
diff changeset
666 repo.getSessionContext().getLog().dump(getClass(), Severity.Warn, "Changeset %d has no associated manifest entry", u);
c895b5556937 Wrap manifest revision map completion into single file access
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parents: 583
diff changeset
667 // keep -1 in the changelog2manifest map.
598
d29d9dc6c128 Utilize the fact nodeids are very different and are read anyway to speed up reverse lookup
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diff changeset
668 continue;
d29d9dc6c128 Utilize the fact nodeids are very different and are read anyway to speed up reverse lookup
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parents: 597
diff changeset
669 }
d29d9dc6c128 Utilize the fact nodeids are very different and are read anyway to speed up reverse lookup
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diff changeset
670 int hash = manifest.hashCode();
d29d9dc6c128 Utilize the fact nodeids are very different and are read anyway to speed up reverse lookup
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parents: 597
diff changeset
671 for (int i = 0; i < manifestNodeidHashes.length; i++) {
d29d9dc6c128 Utilize the fact nodeids are very different and are read anyway to speed up reverse lookup
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parents: 597
diff changeset
672 if (manifestNodeidHashes[i] == hash) {
d29d9dc6c128 Utilize the fact nodeids are very different and are read anyway to speed up reverse lookup
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 597
diff changeset
673 if (manifest.equals(repo.getManifest().getRevision(i))) {
d29d9dc6c128 Utilize the fact nodeids are very different and are read anyway to speed up reverse lookup
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 597
diff changeset
674 changelog2manifest[u] = i;
d29d9dc6c128 Utilize the fact nodeids are very different and are read anyway to speed up reverse lookup
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 597
diff changeset
675 break;
d29d9dc6c128 Utilize the fact nodeids are very different and are read anyway to speed up reverse lookup
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 597
diff changeset
676 }
d29d9dc6c128 Utilize the fact nodeids are very different and are read anyway to speed up reverse lookup
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 597
diff changeset
677 // else false match (only 4 head bytes matched, continue loop
d29d9dc6c128 Utilize the fact nodeids are very different and are read anyway to speed up reverse lookup
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 597
diff changeset
678 }
597
c895b5556937 Wrap manifest revision map completion into single file access
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 583
diff changeset
679 }
354
5f9073eabf06 Propagate errors with exceptions up to a end client
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 326
diff changeset
680 }
598
d29d9dc6c128 Utilize the fact nodeids are very different and are read anyway to speed up reverse lookup
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 597
diff changeset
681 final long t3 = System.nanoTime();
d29d9dc6c128 Utilize the fact nodeids are very different and are read anyway to speed up reverse lookup
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 597
diff changeset
682 System.out.printf("\tRevisionMapper#finish(), %d missing revs: %d + %d us\n", undefinedChangelogRevision.size(), (t2-t1) / 1000, (t3-t2) / 1000);
218
047b1dec7a04 Issue 7: Correctly handle manifest and changelog with different number of (or non-matching) revisions
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 196
diff changeset
683 }
598
d29d9dc6c128 Utilize the fact nodeids are very different and are read anyway to speed up reverse lookup
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 597
diff changeset
684 manifestNodeidHashes = null;
218
047b1dec7a04 Issue 7: Correctly handle manifest and changelog with different number of (or non-matching) revisions
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 196
diff changeset
685 }
047b1dec7a04 Issue 7: Correctly handle manifest and changelog with different number of (or non-matching) revisions
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 196
diff changeset
686 }
415
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
687
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
688 /**
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
689 * Look up specified file in possibly multiple manifest revisions, collect file revision and flags.
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
690 */
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
691 private static class FileLookupInspector implements RevlogStream.Inspector {
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
692
426
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
693 private final Path filename;
415
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
694 private final byte[] filenameAsBytes;
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
695 private final IntMap<Nodeid> csetIndex2FileRev;
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
696 private final IntMap<Flags> csetIndex2Flags;
426
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
697 private final Inspector delegate;
415
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
698
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
699 public FileLookupInspector(EncodingHelper eh, Path fileToLookUp, IntMap<Nodeid> csetIndex2FileRevMap, IntMap<Flags> csetIndex2FlagsMap) {
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
700 assert fileToLookUp != null;
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
701 // need at least one map for the inspector to make any sense
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
702 assert csetIndex2FileRevMap != null || csetIndex2FlagsMap != null;
426
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
703 filename = fileToLookUp;
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
704 filenameAsBytes = eh.toManifest(fileToLookUp.toString());
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
705 delegate = null;
415
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
706 csetIndex2FileRev = csetIndex2FileRevMap;
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
707 csetIndex2Flags = csetIndex2FlagsMap;
426
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
708 }
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
709
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
710 public FileLookupInspector(EncodingHelper eh, Path fileToLookUp, Inspector delegateInspector) {
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
711 assert fileToLookUp != null;
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
712 assert delegateInspector != null;
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
713 filename = fileToLookUp;
415
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
714 filenameAsBytes = eh.toManifest(fileToLookUp.toString());
426
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
715 delegate = delegateInspector;
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
716 csetIndex2FileRev = null;
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
717 csetIndex2Flags = null;
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
718 }
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
719
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
720 void walk(int manifestRevIndex, RevlogStream content) {
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
721 content.iterate(manifestRevIndex, manifestRevIndex, true, this);
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
722 }
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
723
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
724 void walk(int[] manifestRevIndexes, RevlogStream content) {
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
725 content.iterate(manifestRevIndexes, true, this);
415
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
726 }
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
727
423
9c9c442b5f2e Major refactoring of exception handling. Low-level API uses RuntimeExceptions, while checked are left for higher level
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 421
diff changeset
728 public void next(int revisionNumber, int actualLen, int baseRevision, int linkRevision, int parent1Revision, int parent2Revision, byte[] nodeid, DataAccess data) {
574
88afffd39899 Improve memory consumption of HgManifest#getFileRevision(): avoid extra byte[] instances
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 571
diff changeset
729 ByteVector byteVector = new ByteVector(256, 128); // allocate for long paths right away
415
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
730 try {
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
731 byte b;
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
732 while (!data.isEmpty() && (b = data.readByte()) != '\n') {
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
733 if (b != 0) {
574
88afffd39899 Improve memory consumption of HgManifest#getFileRevision(): avoid extra byte[] instances
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 571
diff changeset
734 byteVector.add(b);
415
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
735 } else {
574
88afffd39899 Improve memory consumption of HgManifest#getFileRevision(): avoid extra byte[] instances
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 571
diff changeset
736 if (byteVector.equalsTo(filenameAsBytes)) {
426
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
737 Nodeid fileRev = null;
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
738 Flags flags = null;
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
739 if (csetIndex2FileRev != null || delegate != null) {
415
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
740 byte[] nid = new byte[40];
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
741 data.readBytes(nid, 0, 40);
426
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
742 fileRev = Nodeid.fromAscii(nid, 0, 40);
415
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
743 } else {
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
744 data.skip(40);
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
745 }
426
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
746 if (csetIndex2Flags != null || delegate != null) {
574
88afffd39899 Improve memory consumption of HgManifest#getFileRevision(): avoid extra byte[] instances
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 571
diff changeset
747 byteVector.clear();
415
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
748 while (!data.isEmpty() && (b = data.readByte()) != '\n') {
574
88afffd39899 Improve memory consumption of HgManifest#getFileRevision(): avoid extra byte[] instances
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 571
diff changeset
749 byteVector.add(b);
415
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
750 }
574
88afffd39899 Improve memory consumption of HgManifest#getFileRevision(): avoid extra byte[] instances
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 571
diff changeset
751 if (byteVector.size() == 0) {
415
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
752 flags = Flags.RegularFile;
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
753 } else {
574
88afffd39899 Improve memory consumption of HgManifest#getFileRevision(): avoid extra byte[] instances
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 571
diff changeset
754 flags = Flags.parse(byteVector.toByteArray(), 0, byteVector.size());
415
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
755 }
426
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
756 }
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
757 if (delegate != null) {
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
758 assert flags != null;
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
759 assert fileRev != null;
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
760 delegate.begin(revisionNumber, Nodeid.fromBinary(nodeid, 0), linkRevision);
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
761 delegate.next(fileRev, filename, flags);
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
762 delegate.end(revisionNumber);
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
763
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
764 } else {
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
765 if (csetIndex2FileRev != null) {
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
766 csetIndex2FileRev.put(linkRevision, fileRev);
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
767 }
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
768 if (csetIndex2Flags != null) {
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
769 csetIndex2Flags.put(linkRevision, flags);
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
770 }
415
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
771 }
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
772 break;
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
773 } else {
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
774 data.skip(40);
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
775 }
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
776 // else skip to the end of line
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
777 while (!data.isEmpty() && (b = data.readByte()) != '\n')
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
778 ;
574
88afffd39899 Improve memory consumption of HgManifest#getFileRevision(): avoid extra byte[] instances
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 571
diff changeset
779
88afffd39899 Improve memory consumption of HgManifest#getFileRevision(): avoid extra byte[] instances
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 571
diff changeset
780 byteVector.clear();
415
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
781 }
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
782 }
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
783 } catch (IOException ex) {
423
9c9c442b5f2e Major refactoring of exception handling. Low-level API uses RuntimeExceptions, while checked are left for higher level
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 421
diff changeset
784 throw new HgInvalidControlFileException("Failed reading manifest", ex, null);
415
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
785 }
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
786 }
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
787 }
2
08db726a0fb7 Shaping out low-level Hg structures
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
788 }