Mercurial > hg4j
annotate test/org/tmatesoft/hg/test/MapTagsToFileRevisions.java @ 426:063b0663495a
HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
author | Artem Tikhomirov <tikhomirov.artem@gmail.com> |
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date | Wed, 28 Mar 2012 19:34:37 +0200 |
parents | 6437d261048a |
children | 31a89587eb04 |
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1 package org.tmatesoft.hg.test; |
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2 |
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3 import static org.tmatesoft.hg.repo.HgRepository.TIP; |
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4 |
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5 import java.io.File; |
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6 import java.util.ArrayList; |
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7 import java.util.Arrays; |
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8 import java.util.HashMap; |
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9 import java.util.LinkedList; |
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10 import java.util.List; |
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11 import java.util.Map; |
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12 |
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13 import org.junit.Assert; |
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14 import org.tmatesoft.hg.core.HgCallbackTargetException; |
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15 import org.tmatesoft.hg.core.HgChangeset; |
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16 import org.tmatesoft.hg.core.HgChangesetHandler; |
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17 import org.tmatesoft.hg.core.HgException; |
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18 import org.tmatesoft.hg.core.HgLogCommand; |
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19 import org.tmatesoft.hg.core.Nodeid; |
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20 import org.tmatesoft.hg.internal.IntMap; |
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21 import org.tmatesoft.hg.repo.HgChangelog; |
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22 import org.tmatesoft.hg.repo.HgChangelog.RawChangeset; |
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23 import org.tmatesoft.hg.repo.HgDataFile; |
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24 import org.tmatesoft.hg.repo.HgLookup; |
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25 import org.tmatesoft.hg.repo.HgManifest; |
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26 import org.tmatesoft.hg.repo.HgManifest.Flags; |
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27 import org.tmatesoft.hg.repo.HgRepository; |
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28 import org.tmatesoft.hg.repo.HgTags; |
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29 import org.tmatesoft.hg.repo.HgTags.TagInfo; |
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30 import org.tmatesoft.hg.util.CancelledException; |
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31 import org.tmatesoft.hg.util.Path; |
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32 |
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33 /** |
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34 * @author Marc Strapetz |
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35 */ |
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36 public class MapTagsToFileRevisions { |
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37 |
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38 // Static ================================================================= |
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39 |
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40 public static void main(String[] args) throws Exception { |
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41 MapTagsToFileRevisions m = new MapTagsToFileRevisions(); |
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42 System.out.printf("Free mem: %,d\n", Runtime.getRuntime().freeMemory()); |
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43 m.measurePatchAffectsArbitraryRevisionRead(); |
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44 // m.collectTagsPerFile(); |
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45 // m.manifestWalk(); |
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46 // m.changelogWalk(); |
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47 // m.revisionMap(); |
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48 // m.buildFile2ChangelogRevisionMap(); |
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49 m = null; |
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50 System.gc(); |
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51 System.out.printf("Free mem: %,d\n", Runtime.getRuntime().freeMemory()); |
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52 } |
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53 |
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54 |
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55 // revision == 2406 - 5 ms per run (baseRevision == 2406) |
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56 // revision == 2405 - 69 ms per run (baseRevision == 1403) |
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57 private void measurePatchAffectsArbitraryRevisionRead() throws Exception { |
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58 final HgRepository repository = new HgLookup().detect(new File("/temp/hg/cpython")); |
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59 final DoNothingManifestInspector insp = new DoNothingManifestInspector(); |
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60 final int revision = 2405; |
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61 // warm-up. |
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62 repository.getManifest().walk(revision, revision, insp); |
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63 final int runs = 10; |
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64 final long start = System.nanoTime(); |
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65 for (int i = 0; i < runs; i++) { |
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66 repository.getManifest().walk(revision, revision, insp); |
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67 } |
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68 final long end = System.nanoTime(); |
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69 System.out.printf("%d ms per run\n", (end - start)/ (runs*1000000)); |
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70 } |
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71 |
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72 /* |
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73 * .hgtags, 261 revisions |
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74 * Approach 1: total 83, init: 0, iteration: 82 |
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75 * Approach 2: total 225, init: 206, iteration: 19 |
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76 * README, 465 revisions |
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77 * Approach 1: total 162, init: 0, iteration: 161 |
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78 * Approach 2: total 231, init: 198, iteration: 32 |
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79 * configure.in, 1109 revisions |
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80 * Approach 1: total 409, init: 1, iteration: 407 |
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81 * Approach 2: total 277, init: 203, iteration: 74 |
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82 */ |
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83 private void buildFile2ChangelogRevisionMap() throws Exception { |
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84 final HgRepository repository = new HgLookup().detect(new File("/temp/hg/cpython")); |
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85 final HgChangelog clog = repository.getChangelog(); |
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86 final HgDataFile fileNode = repository.getFileNode("configure.in"); |
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87 // warm-up |
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88 HgChangelog.RevisionMap clogMap = clog.new RevisionMap().init(); |
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89 HgDataFile.RevisionMap fileMap = fileNode.new RevisionMap().init(); |
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90 // |
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91 final int latestRevision = fileNode.getLastRevision(); |
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92 // |
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93 final long start_1 = System.nanoTime(); |
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94 fileMap = fileNode.new RevisionMap().init(); |
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95 final long start_1a = System.nanoTime(); |
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96 final Map<Nodeid, Nodeid> changesetToNodeid_1 = new HashMap<Nodeid, Nodeid>(); |
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97 for (int revision = 0; revision <= latestRevision; revision++) { |
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98 final Nodeid nodeId = fileMap.revision(revision); |
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99 // final Nodeid changesetId = fileNode.getChangesetRevision(nodeId); |
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100 int localCset = fileNode.getChangesetRevisionIndex(revision); |
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101 final Nodeid changesetId = clog.getRevision(localCset); |
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102 changesetToNodeid_1.put(changesetId, nodeId); |
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103 } |
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104 final long end_1 = System.nanoTime(); |
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105 // |
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106 final long start_2 = System.nanoTime(); |
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107 clogMap = clog.new RevisionMap().init(); |
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108 fileMap = fileNode.new RevisionMap().init(); |
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109 final Map<Nodeid, Nodeid> changesetToNodeid_2 = new HashMap<Nodeid, Nodeid>(); |
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110 final long start_2a = System.nanoTime(); |
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111 for (int revision = 0; revision <= latestRevision; revision++) { |
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112 Nodeid nidFile = fileMap.revision(revision); |
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113 int localCset = fileNode.getChangesetRevisionIndex(revision); |
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114 Nodeid nidCset = clogMap.revision(localCset); |
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115 changesetToNodeid_2.put(nidCset, nidFile); |
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116 } |
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117 final long end_2 = System.nanoTime(); |
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118 Assert.assertEquals(changesetToNodeid_1, changesetToNodeid_2); |
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119 // |
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120 final long start_3 = System.nanoTime(); |
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121 final Map<Nodeid, Nodeid> changesetToNodeid_3 = new HashMap<Nodeid, Nodeid>(); |
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122 fileNode.walk(0, TIP, new HgDataFile.RevisionInspector() { |
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123 |
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124 public void next(int fileRevisionIndex, Nodeid revision, int linkedRevisionIndex) { |
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125 changesetToNodeid_3.put(clog.getRevision(linkedRevisionIndex), revision); |
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126 } |
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127 }); |
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128 final long end_3 = System.nanoTime(); |
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129 Assert.assertEquals(changesetToNodeid_1, changesetToNodeid_3); |
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130 System.out.printf("Approach 1: total %d, init: %d, iteration: %d\n", (end_1 - start_1)/1000000, (start_1a - start_1)/1000000, (end_1 - start_1a)/1000000); |
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131 System.out.printf("Approach 2: total %d, init: %d, iteration: %d\n", (end_2 - start_2)/1000000, (start_2a - start_2)/1000000, (end_2 - start_2a)/1000000); |
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132 System.out.printf("Approach 3: total %d\n", (end_3 - start_3)/1000000); |
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133 } |
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134 |
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135 /* |
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136 * Each 5000 revisions from cpython, total 15 revisions |
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137 * Direct clog.getRevisionIndex: ~260 ms |
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138 * RevisionMap.revisionIndex: ~265 ms (almost 100% in #init()) |
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139 * each 1000'th revision, total 71 revision: 1 230 vs 270 |
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140 * each 2000'th revision, total 36 revision: 620 vs 270 |
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141 * each 3000'th revision, total 24 revision: 410 vs 275 |
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142 */ |
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143 private void revisionMap() throws Exception { |
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144 final HgRepository repository = new HgLookup().detect(new File("/temp/hg/cpython")); |
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145 final HgChangelog clog = repository.getChangelog(); |
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146 ArrayList<Nodeid> revisions = new ArrayList<Nodeid>(); |
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147 final int step = 5000; |
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148 for (int i = 0, top = clog.getLastRevision(); i < top; i += step) { |
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149 revisions.add(clog.getRevision(i)); |
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150 } |
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151 final long s1 = System.nanoTime(); |
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152 for (Nodeid n : revisions) { |
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153 int r = clog.getRevisionIndex(n); |
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154 if (r % step != 0) { |
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155 throw new IllegalStateException(Integer.toString(r)); |
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156 } |
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157 } |
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158 System.out.printf("Direct lookup of %d revisions took %,d ns\n", revisions.size(), System.nanoTime() - s1); |
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159 HgChangelog.RevisionMap rmap = clog.new RevisionMap(); |
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160 final long s2 = System.nanoTime(); |
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161 rmap.init(); |
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162 final long s3 = System.nanoTime(); |
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163 for (Nodeid n : revisions) { |
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164 int r = rmap.revisionIndex(n); |
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165 if (r % step != 0) { |
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166 throw new IllegalStateException(Integer.toString(r)); |
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167 } |
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168 } |
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169 System.out.printf("RevisionMap time: %d ms, of that init() %,d ns\n", (System.nanoTime() - s2) / 1000000, s3 - s2); |
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170 } |
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171 |
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172 private void changelogWalk() throws Exception { |
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173 final HgRepository repository = new HgLookup().detect(new File("/temp/hg/cpython")); |
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174 final long start = System.currentTimeMillis(); |
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175 repository.getChangelog().all(new HgChangelog.Inspector() { |
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176 public int xx = 0; |
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177 |
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178 public void next(int revisionNumber, Nodeid nodeid, RawChangeset cset) { |
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179 if (xx+revisionNumber < 0) { |
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180 System.out.println(xx); |
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181 System.out.println(revisionNumber); |
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182 } |
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183 xx += revisionNumber; |
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184 } |
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185 }); |
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186 // cpython: 17 seconds, mem 132,9 -> 129,0 -> 131,7 |
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187 // cpyhton: 13 seconds. Of that, cumulative Patch.apply takes 8.8 seconds, RevlogStream.Inspector.next - 1.8 |
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188 System.out.printf("Total time: %d ms\n", System.currentTimeMillis() - start); |
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189 System.out.printf("Free mem: %,d\n", Runtime.getRuntime().freeMemory()); |
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190 } |
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191 |
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192 private void manifestWalk() throws Exception { |
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193 System.out.println(System.getProperty("java.version")); |
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194 final long start = System.currentTimeMillis(); |
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195 final HgRepository repository = new HgLookup().detect(new File("/temp/hg/cpython")); |
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196 repository.getManifest().walk(0, 10000, new DoNothingManifestInspector()); |
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197 // cpython: 1,1 sec for 0..1000, 43 sec for 0..10000, 115 sec for 0..20000 (Pool with HashMap) |
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198 // 2,4 sec for 1000..2000 |
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199 // cpython -r 1000: 484 files, -r 2000: 1015 files. Iteration 1000..2000; fnamePool.size:1019 nodeidPool.size:2989 |
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200 // nodeidPool for two subsequent revisions only: 840. 37 sec for 0..10000. 99 sec for 0..20k |
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201 // 0..10000 fnamePool: hits:15989152, misses:3020 |
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202 // |
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203 // With Pool<StringProxy> for fname and flags, Nodeid's ascii2bin through local array, overall byte[] iteration, |
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204 // 0..10k is 34 seconds now |
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205 // Another run, 23 seconds now, seems nothing has been changed. Switched to Pool2 with DirectHashSet: 22,5 seconds |
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206 System.out.printf("Total time: %d ms\n", System.currentTimeMillis() - start); |
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207 System.out.printf("Free mem: %,d\n", Runtime.getRuntime().freeMemory()); |
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208 } |
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209 |
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210 private int[] collectLocalTagRevisions(HgChangelog.RevisionMap clogrmap, TagInfo[] allTags, IntMap<List<TagInfo>> tagLocalRev2TagInfo) { |
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211 int[] tagLocalRevs = new int[allTags.length]; |
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212 int x = 0; |
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213 for (int i = 0; i < allTags.length; i++) { |
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214 final Nodeid tagRevision = allTags[i].revision(); |
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215 final int tagRevisionIndex = clogrmap.revisionIndex(tagRevision); |
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216 if (tagRevisionIndex != HgRepository.BAD_REVISION) { |
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217 tagLocalRevs[x++] = tagRevisionIndex; |
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218 List<TagInfo> tagsAssociatedWithRevision = tagLocalRev2TagInfo.get(tagRevisionIndex); |
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219 if (tagsAssociatedWithRevision == null) { |
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220 tagLocalRev2TagInfo.put(tagRevisionIndex, tagsAssociatedWithRevision = new LinkedList<TagInfo>()); |
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221 } |
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222 tagsAssociatedWithRevision.add(allTags[i]); |
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223 } |
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224 } |
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225 if (x != allTags.length) { |
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226 // some tags were removed (recorded Nodeid.NULL tagname) |
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227 int[] copy = new int[x]; |
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228 System.arraycopy(tagLocalRevs, 0, copy, 0, x); |
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229 tagLocalRevs = copy; |
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230 } |
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231 return tagLocalRevs; |
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232 } |
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233 |
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234 private void collectTagsPerFile() throws HgException, CancelledException { |
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235 final long start = System.currentTimeMillis(); |
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236 final HgRepository repository = new HgLookup().detect(new File("/temp/hg/cpython")); |
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237 final HgTags tags = repository.getTags(); |
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238 // |
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239 // build cache |
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240 // |
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241 final TagInfo[] allTags = new TagInfo[tags.getAllTags().size()]; |
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242 tags.getAllTags().values().toArray(allTags); |
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243 // effective translation of changeset revisions to their local indexes |
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244 final HgChangelog.RevisionMap clogrmap = repository.getChangelog().new RevisionMap().init(); |
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245 // map to look up tag by changeset local number |
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246 final IntMap<List<TagInfo>> tagLocalRev2TagInfo = new IntMap<List<TagInfo>>(allTags.length); |
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247 System.out.printf("Collecting manifests for %d tags\n", allTags.length); |
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248 final int[] tagLocalRevs = collectLocalTagRevisions(clogrmap, allTags, tagLocalRev2TagInfo); |
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249 System.out.printf("Prepared %d tag revisions to analyze: %d ms\n", tagLocalRevs.length, System.currentTimeMillis() - start); |
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250 |
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251 final Path targetPath = Path.create("README"); |
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252 // |
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253 collectTagsPerFile_Approach_1(clogrmap, tagLocalRevs, allTags, targetPath); |
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254 System.out.printf("Total time: %d ms\n", System.currentTimeMillis() - start); |
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255 |
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256 System.out.println("\nApproach 2"); |
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257 collectTagsPerFile_Approach_2(repository, tagLocalRevs, tagLocalRev2TagInfo, allTags, targetPath); |
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258 } |
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259 |
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260 // Approach 1. Build map with all files, their revisions and corresponding tags |
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261 // |
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262 private void collectTagsPerFile_Approach_1(final HgChangelog.RevisionMap clogrmap, final int[] tagLocalRevs, final TagInfo[] allTags, Path targetPath) throws HgException { |
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263 HgRepository repository = clogrmap.getRepo(); |
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264 final long start = System.currentTimeMillis(); |
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265 // file2rev2tag value is array of revisions, always of allTags.length. Revision index in the array |
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266 // is index of corresponding TagInfo in allTags; |
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267 final Map<Path, Nodeid[]> file2rev2tag = new HashMap<Path, Nodeid[]>(); |
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268 repository.getManifest().walk(new HgManifest.Inspector() { |
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269 private int[] tagIndexAtRev = new int[4]; // it's unlikely there would be a lot of tags associated with a given cset |
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270 |
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271 public boolean begin(int mainfestRevision, Nodeid nid, int changelogRevision) { |
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272 // may do better here using tagLocalRev2TagInfo, but need to change a lot, too lazy now |
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273 Nodeid cset = clogrmap.revision(changelogRevision); |
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274 Arrays.fill(tagIndexAtRev, -1); |
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275 for (int i = 0, x = 0; i < allTags.length; i++) { |
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276 if (cset.equals(allTags[i].revision())) { |
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277 tagIndexAtRev[x++] = i; |
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278 if (x == tagIndexAtRev.length) { |
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279 // expand twice as much |
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280 int[] expanded = new int[x << 1]; |
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281 System.arraycopy(tagIndexAtRev, 0, expanded, 0, x); |
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282 expanded[x] = -1; // just in case there'd be no more tags associated with this cset |
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283 tagIndexAtRev = expanded; |
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284 } |
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285 } |
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286 } |
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287 if (tagIndexAtRev[0] == -1) { |
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288 System.out.println("Can't happen, provided we iterate over revisions with tags only"); |
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289 } |
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290 return true; |
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291 } |
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292 |
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293 public boolean next(Nodeid nid, Path fname, HgManifest.Flags flags) { |
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294 Nodeid[] m = file2rev2tag.get(fname); |
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295 if (m == null) { |
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296 file2rev2tag.put(fname, m = new Nodeid[allTags.length]); |
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297 } |
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298 for (int tagIndex : tagIndexAtRev) { |
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299 if (tagIndex == -1) { |
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300 break; |
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301 } |
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302 if (m[tagIndex] != null) { |
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303 System.out.printf("There's another revision (%s) associated with tag %s already while we try to associate %s\n", m[tagIndex].shortNotation(), allTags[tagIndex].name(), nid.shortNotation()); |
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304 } |
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305 m[tagIndex] = nid; |
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306 } |
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307 return true; |
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308 } |
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309 |
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310 public boolean end(int manifestRevision) { |
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311 return true; |
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312 } |
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313 |
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314 }, tagLocalRevs); |
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315 System.out.printf("Cache built: %d ms\n", System.currentTimeMillis() - start); |
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316 // |
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317 // look up specific file. This part is fast. |
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318 HgDataFile fileNode = repository.getFileNode(targetPath); |
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319 final Nodeid[] allTagsOfTheFile = file2rev2tag.get(targetPath); |
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320 // TODO if fileNode.isCopy, repeat for each getCopySourceName() |
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321 for (int fileRevIndex = 0; fileRevIndex < fileNode.getRevisionCount(); fileRevIndex++) { |
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322 Nodeid fileRev = fileNode.getRevision(fileRevIndex); |
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323 int changesetRevIndex = fileNode.getChangesetRevisionIndex(fileRevIndex); |
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324 List<String> associatedTags = new LinkedList<String>(); |
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325 for (int i = 0; i < allTagsOfTheFile.length; i++) { |
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326 if (fileRev.equals(allTagsOfTheFile[i])) { |
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327 associatedTags.add(allTags[i].name()); |
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328 } |
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329 } |
368
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330 System.out.printf("%3d%7d%s\n", fileRevIndex, changesetRevIndex, associatedTags); |
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331 } |
326
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332 } |
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333 |
366
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334 private void collectTagsPerFile_Approach_2(HgRepository repository, final int[] tagLocalRevs, final IntMap<List<TagInfo>> tagLocalRev2TagInfo, TagInfo[] allTags, Path targetPath) throws HgException { |
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335 // |
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336 // Approach 2. No all-file map. Collect file revisions recorded at the time of tagging, |
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337 // then for each file revision check if it is among those above, and if yes, take corresponding tags |
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338 HgDataFile fileNode = repository.getFileNode(targetPath); |
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339 final long start2 = System.nanoTime(); |
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340 final int lastRev = fileNode.getLastRevision(); |
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341 final Map<Integer, Nodeid> fileRevisionAtTagRevision = new HashMap<Integer, Nodeid>(); |
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342 HgManifest.Inspector collectFileRevAtCset = new HgManifest.Inspector() { |
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343 |
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344 private int csetRevIndex; |
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345 |
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346 public boolean next(Nodeid nid, Path fname, Flags flags) { |
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347 fileRevisionAtTagRevision.put(csetRevIndex, nid); |
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348 return true; |
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349 } |
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350 |
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351 public boolean end(int manifestRevision) { |
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352 return true; |
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353 } |
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354 |
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355 public boolean begin(int mainfestRevision, Nodeid nid, int changelogRevision) { |
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356 csetRevIndex = changelogRevision; |
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357 return true; |
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358 } |
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359 }; |
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360 repository.getManifest().walkFileRevisions(targetPath, collectFileRevAtCset,tagLocalRevs); |
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361 |
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362 final long start2a = System.nanoTime(); |
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363 fileNode.walk(0, lastRev, new HgDataFile.RevisionInspector() { |
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364 |
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365 public void next(int fileRevisionIndex, Nodeid fileRevision, int changesetRevisionIndex) { |
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366 List<String> associatedTags = new LinkedList<String>(); |
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367 for (int taggetRevision : tagLocalRevs) { |
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368 // current file revision can't appear in tags that point to earlier changelog revisions (they got own file revision) |
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369 if (taggetRevision >= changesetRevisionIndex) { |
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370 // z points to some changeset with tag |
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371 Nodeid wasKnownAs = fileRevisionAtTagRevision.get(taggetRevision); |
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372 if (wasKnownAs.equals(fileRevision)) { |
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373 // has tag associated with changeset at index z |
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374 List<TagInfo> tagsAtRev = tagLocalRev2TagInfo.get(taggetRevision); |
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375 assert tagsAtRev != null; |
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376 for (TagInfo ti : tagsAtRev) { |
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377 associatedTags.add(ti.name()); |
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378 } |
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379 } |
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380 } |
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381 } |
368
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382 System.out.printf("%3d%7d%s\n", fileRevisionIndex, changesetRevisionIndex, associatedTags); |
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383 } |
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384 }); |
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385 System.out.printf("Alternative total time: %d ms, of that init: %d ms\n", (System.nanoTime() - start2)/1000000, (start2a-start2)/1000000); |
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386 System.out.printf("Free mem: %,d\n", Runtime.getRuntime().freeMemory()); |
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387 } |
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388 |
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389 static class DoNothingManifestInspector implements HgManifest.Inspector { |
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390 public boolean begin(int mainfestRevision, Nodeid nid, int changelogRevision) { |
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391 return true; |
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392 } |
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393 public boolean next(Nodeid nid, Path fname, Flags flags) { |
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394 return true; |
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395 } |
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396 public boolean end(int manifestRevision) { |
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397 return true; |
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398 } |
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399 } |
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400 |
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401 public static void main2(String[] args) throws HgCallbackTargetException, HgException, CancelledException { |
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402 final HgRepository repository = new HgLookup().detect(new File("/temp/hg/cpython")); |
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403 final Path targetPath = Path.create("README"); |
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404 final HgTags tags = repository.getTags(); |
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405 final Map<String, HgTags.TagInfo> tagToInfo = tags.getAllTags(); |
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406 final HgManifest manifest = repository.getManifest(); |
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407 final Map<Nodeid, List<String>> changeSetRevisionToTags = new HashMap<Nodeid, List<String>>(); |
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408 final HgDataFile fileNode = repository.getFileNode(targetPath); |
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409 for (String tagName : tagToInfo.keySet()) { |
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410 final HgTags.TagInfo info = tagToInfo.get(tagName); |
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411 final Nodeid nodeId = info.revision(); |
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412 // TODO: This is not correct as we can't be sure that file at the corresponding revision is actually our target file (which may have been renamed, etc.) |
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413 final Nodeid fileRevision = manifest.getFileRevision(repository.getChangelog().getRevisionIndex(nodeId), targetPath); |
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414 if (fileRevision == null) { |
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415 continue; |
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416 } |
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417 |
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418 final Nodeid changeSetRevision = fileNode.getChangesetRevision(fileRevision); |
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419 List<String> revisionTags = changeSetRevisionToTags.get(changeSetRevision); |
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420 if (revisionTags == null) { |
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421 revisionTags = new ArrayList<String>(); |
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422 changeSetRevisionToTags.put(changeSetRevision, revisionTags); |
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423 } |
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424 revisionTags.add(tagName); |
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425 } |
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426 |
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427 final HgLogCommand logCommand = new HgLogCommand(repository); |
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428 logCommand.file(targetPath, true); |
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429 logCommand.execute(new HgChangesetHandler() { |
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430 public void next(HgChangeset changeset) { |
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431 if (changeset.getAffectedFiles().contains(targetPath)) { |
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432 System.out.println(changeset.getRevisionIndex() + " " + changeSetRevisionToTags.get(changeset.getNodeid())); |
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433 } |
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434 } |
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435 }); |
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436 } |
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437 } |