tikhomirov@254: package org.tmatesoft.hg.test;
tikhomirov@254: 
tikhomirov@324: import static org.tmatesoft.hg.repo.HgRepository.TIP;
tikhomirov@324: 
tikhomirov@255: import java.io.File;
tikhomirov@255: import java.util.ArrayList;
tikhomirov@256: import java.util.Arrays;
tikhomirov@255: import java.util.HashMap;
tikhomirov@255: import java.util.LinkedList;
tikhomirov@255: import java.util.List;
tikhomirov@255: import java.util.Map;
tikhomirov@254: 
tikhomirov@324: import org.junit.Assert;
tikhomirov@423: import org.tmatesoft.hg.core.HgCallbackTargetException;
tikhomirov@255: import org.tmatesoft.hg.core.HgChangeset;
tikhomirov@255: import org.tmatesoft.hg.core.HgChangesetHandler;
tikhomirov@255: import org.tmatesoft.hg.core.HgException;
tikhomirov@255: import org.tmatesoft.hg.core.HgLogCommand;
tikhomirov@255: import org.tmatesoft.hg.core.Nodeid;
tikhomirov@326: import org.tmatesoft.hg.internal.IntMap;
tikhomirov@255: import org.tmatesoft.hg.repo.HgChangelog;
tikhomirov@326: import org.tmatesoft.hg.repo.HgChangelog.RawChangeset;
tikhomirov@255: import org.tmatesoft.hg.repo.HgDataFile;
tikhomirov@255: import org.tmatesoft.hg.repo.HgLookup;
tikhomirov@255: import org.tmatesoft.hg.repo.HgManifest;
tikhomirov@326: import org.tmatesoft.hg.repo.HgManifest.Flags;
tikhomirov@255: import org.tmatesoft.hg.repo.HgRepository;
tikhomirov@255: import org.tmatesoft.hg.repo.HgTags;
tikhomirov@254: import org.tmatesoft.hg.repo.HgTags.TagInfo;
tikhomirov@255: import org.tmatesoft.hg.util.CancelledException;
tikhomirov@255: import org.tmatesoft.hg.util.Path;
tikhomirov@254: 
tikhomirov@254: /**
tikhomirov@254:  * @author Marc Strapetz
tikhomirov@254:  */
tikhomirov@254: public class MapTagsToFileRevisions {
tikhomirov@254: 
tikhomirov@254: 	// Static =================================================================
tikhomirov@254: 
tikhomirov@255: 	public static void main(String[] args) throws Exception {
tikhomirov@255: 		MapTagsToFileRevisions m = new MapTagsToFileRevisions();
tikhomirov@255: 		System.out.printf("Free mem: %,d\n", Runtime.getRuntime().freeMemory());
tikhomirov@329: 		m.measurePatchAffectsArbitraryRevisionRead();
tikhomirov@329: //		m.collectTagsPerFile();
tikhomirov@307: //		m.manifestWalk();
tikhomirov@307: //		m.changelogWalk();
tikhomirov@324: //		m.revisionMap();
tikhomirov@326: //		m.buildFile2ChangelogRevisionMap();
tikhomirov@255: 		m = null;
tikhomirov@255: 		System.gc();
tikhomirov@255: 		System.out.printf("Free mem: %,d\n", Runtime.getRuntime().freeMemory());
tikhomirov@255: 	}
tikhomirov@324: 	
tikhomirov@329: 
tikhomirov@329: 	// revision == 2406  -   5 ms per run (baseRevision == 2406)
tikhomirov@329: 	// revision == 2405  -  69 ms per run (baseRevision == 1403)
tikhomirov@329: 	private void measurePatchAffectsArbitraryRevisionRead() throws Exception {
tikhomirov@329: 		final HgRepository repository = new HgLookup().detect(new File("/temp/hg/cpython"));
tikhomirov@329: 		final DoNothingManifestInspector insp = new DoNothingManifestInspector();
tikhomirov@329: 		final int revision = 2405;
tikhomirov@329: 		// warm-up.
tikhomirov@329: 		repository.getManifest().walk(revision, revision, insp);
tikhomirov@329: 		final int runs = 10;
tikhomirov@329: 		final long start = System.nanoTime();
tikhomirov@329: 		for (int i = 0; i < runs; i++) {
tikhomirov@329: 			repository.getManifest().walk(revision, revision, insp);
tikhomirov@329: 		}
tikhomirov@329: 		final long end = System.nanoTime();
tikhomirov@329: 		System.out.printf("%d ms per run\n", (end - start)/ (runs*1000000));
tikhomirov@329: 	}
tikhomirov@329: 
tikhomirov@324: 	/*
tikhomirov@324: 	 * .hgtags, 261 revisions
tikhomirov@324: 	 * Approach 1: total 83, init: 0, iteration: 82
tikhomirov@324: 	 * Approach 2: total 225, init: 206, iteration: 19
tikhomirov@324: 	 * README, 465 revisions
tikhomirov@324: 	 * Approach 1: total 162, init: 0, iteration: 161
tikhomirov@324: 	 * Approach 2: total 231, init: 198, iteration: 32
tikhomirov@324: 	 * configure.in, 1109 revisions
tikhomirov@324: 	 * Approach 1: total 409, init: 1, iteration: 407
tikhomirov@324: 	 * Approach 2: total 277, init: 203, iteration: 74
tikhomirov@324: 	 */
tikhomirov@324: 	private void buildFile2ChangelogRevisionMap() throws Exception {
tikhomirov@324: 		final HgRepository repository = new HgLookup().detect(new File("/temp/hg/cpython"));
tikhomirov@324: 		final HgChangelog clog = repository.getChangelog();
tikhomirov@324: 		final HgDataFile fileNode = repository.getFileNode("configure.in");
tikhomirov@324: 		// warm-up
tikhomirov@324: 		HgChangelog.RevisionMap clogMap = clog.new RevisionMap().init();
tikhomirov@324: 		HgDataFile.RevisionMap fileMap = fileNode.new RevisionMap().init();
tikhomirov@324: 		//
tikhomirov@324: 		final int latestRevision = fileNode.getLastRevision();
tikhomirov@324: 		//
tikhomirov@324: 		final long start_1 = System.nanoTime();
tikhomirov@324: 		fileMap = fileNode.new RevisionMap().init();
tikhomirov@324: 		final long start_1a = System.nanoTime();
tikhomirov@324: 		final Map<Nodeid, Nodeid> changesetToNodeid_1 = new HashMap<Nodeid, Nodeid>();
tikhomirov@324: 		for (int revision = 0; revision <= latestRevision; revision++) {
tikhomirov@324: 		       final Nodeid nodeId = fileMap.revision(revision);
tikhomirov@324: //		       final Nodeid changesetId = fileNode.getChangesetRevision(nodeId);
tikhomirov@367: 		       int localCset = fileNode.getChangesetRevisionIndex(revision);
tikhomirov@324: 		       final Nodeid changesetId = clog.getRevision(localCset);
tikhomirov@324: 		       changesetToNodeid_1.put(changesetId, nodeId);
tikhomirov@324: 		}
tikhomirov@324: 		final long end_1 = System.nanoTime();
tikhomirov@324: 		//
tikhomirov@324: 		final long start_2 = System.nanoTime();
tikhomirov@324: 		clogMap = clog.new RevisionMap().init();
tikhomirov@324: 		fileMap = fileNode.new RevisionMap().init();
tikhomirov@324: 		final Map<Nodeid, Nodeid> changesetToNodeid_2 = new HashMap<Nodeid, Nodeid>();
tikhomirov@324: 		final long start_2a = System.nanoTime();
tikhomirov@324: 		for (int revision = 0; revision <= latestRevision; revision++) {
tikhomirov@324: 			Nodeid nidFile = fileMap.revision(revision);
tikhomirov@367: 			int localCset = fileNode.getChangesetRevisionIndex(revision);
tikhomirov@324: 			Nodeid nidCset = clogMap.revision(localCset);
tikhomirov@324: 			changesetToNodeid_2.put(nidCset, nidFile);
tikhomirov@324: 		}
tikhomirov@324: 		final long end_2 = System.nanoTime();
tikhomirov@324: 		Assert.assertEquals(changesetToNodeid_1, changesetToNodeid_2);
tikhomirov@324: 		//
tikhomirov@324: 		final long start_3 = System.nanoTime();
tikhomirov@324: 		final Map<Nodeid, Nodeid> changesetToNodeid_3 = new HashMap<Nodeid, Nodeid>();
tikhomirov@324: 		fileNode.walk(0, TIP, new HgDataFile.RevisionInspector() {
tikhomirov@324: 
tikhomirov@368: 			public void next(int fileRevisionIndex, Nodeid revision, int linkedRevisionIndex) {
tikhomirov@423: 				changesetToNodeid_3.put(clog.getRevision(linkedRevisionIndex), revision);
tikhomirov@324: 			}
tikhomirov@324: 		});
tikhomirov@324: 		final long end_3 = System.nanoTime();
tikhomirov@324: 		Assert.assertEquals(changesetToNodeid_1, changesetToNodeid_3);
tikhomirov@324: 		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);
tikhomirov@324: 		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);
tikhomirov@324: 		System.out.printf("Approach 3: total %d\n", (end_3 - start_3)/1000000);
tikhomirov@324: 	}
tikhomirov@263: 
tikhomirov@307: 	/*
tikhomirov@307: 	 * Each 5000 revisions from cpython, total 15 revisions
tikhomirov@367: 	 * Direct clog.getRevisionIndex: ~260 ms
tikhomirov@367: 	 * RevisionMap.revisionIndex: ~265 ms (almost 100% in #init())
tikhomirov@307: 	 * each 1000'th revision, total 71 revision: 1 230 vs 270
tikhomirov@307: 	 * each 2000'th revision, total 36 revision: 620 vs 270
tikhomirov@307: 	 * each 3000'th revision, total 24 revision: 410 vs 275
tikhomirov@307: 	 */
tikhomirov@307: 	private void revisionMap() throws Exception {
tikhomirov@307: 		final HgRepository repository = new HgLookup().detect(new File("/temp/hg/cpython"));
tikhomirov@307: 		final HgChangelog clog = repository.getChangelog();
tikhomirov@307: 		ArrayList<Nodeid> revisions = new ArrayList<Nodeid>();
tikhomirov@307: 		final int step = 5000;
tikhomirov@307: 		for (int i = 0, top = clog.getLastRevision(); i < top; i += step) {
tikhomirov@307: 			revisions.add(clog.getRevision(i));
tikhomirov@307: 		}
tikhomirov@307: 		final long s1 = System.nanoTime();
tikhomirov@307: 		for (Nodeid n : revisions) {
tikhomirov@367: 			int r = clog.getRevisionIndex(n);
tikhomirov@307: 			if (r % step != 0) {
tikhomirov@307: 				throw new IllegalStateException(Integer.toString(r));
tikhomirov@307: 			}
tikhomirov@307: 		}
tikhomirov@307: 		System.out.printf("Direct lookup of %d revisions took %,d ns\n", revisions.size(), System.nanoTime() - s1);
tikhomirov@307: 		HgChangelog.RevisionMap rmap = clog.new RevisionMap();
tikhomirov@307: 		final long s2 = System.nanoTime();
tikhomirov@307: 		rmap.init();
tikhomirov@307: 		final long s3 = System.nanoTime();
tikhomirov@307: 		for (Nodeid n : revisions) {
tikhomirov@367: 			int r = rmap.revisionIndex(n);
tikhomirov@307: 			if (r % step != 0) {
tikhomirov@307: 				throw new IllegalStateException(Integer.toString(r));
tikhomirov@307: 			}
tikhomirov@307: 		}
tikhomirov@307: 		System.out.printf("RevisionMap time: %d ms, of that init() %,d ns\n", (System.nanoTime() - s2) / 1000000, s3 - s2);
tikhomirov@307: 	}
tikhomirov@307: 
tikhomirov@263: 	private void changelogWalk() throws Exception {
tikhomirov@307: 		final HgRepository repository = new HgLookup().detect(new File("/temp/hg/cpython"));
tikhomirov@263: 		final long start = System.currentTimeMillis();
tikhomirov@263: 		repository.getChangelog().all(new HgChangelog.Inspector() {
tikhomirov@263: 			public int xx = 0;
tikhomirov@263: 			
tikhomirov@263: 			public void next(int revisionNumber, Nodeid nodeid, RawChangeset cset) {
tikhomirov@263: 				if (xx+revisionNumber < 0) {
tikhomirov@263: 					System.out.println(xx);
tikhomirov@263: 					System.out.println(revisionNumber);
tikhomirov@263: 				}
tikhomirov@263: 				xx += revisionNumber;
tikhomirov@263: 			}
tikhomirov@263: 		});
tikhomirov@263: 		// cpython: 17 seconds, mem  132,9 -> 129,0 -> 131,7
tikhomirov@263: 		// cpyhton: 13 seconds. Of that, cumulative Patch.apply takes 8.8 seconds, RevlogStream.Inspector.next - 1.8
tikhomirov@263: 		System.out.printf("Total time: %d ms\n", System.currentTimeMillis() - start);
tikhomirov@263: 		System.out.printf("Free mem: %,d\n", Runtime.getRuntime().freeMemory());
tikhomirov@263: 	}
tikhomirov@263: 
tikhomirov@263: 	private void manifestWalk() throws Exception {
tikhomirov@268: 		System.out.println(System.getProperty("java.version"));
tikhomirov@263: 		final long start = System.currentTimeMillis();
tikhomirov@263: 		final HgRepository repository = new HgLookup().detect(new File("/temp/hg/cpython"));
tikhomirov@329: 		repository.getManifest().walk(0, 10000, new DoNothingManifestInspector());
tikhomirov@263: 		// cpython: 1,1 sec for 0..1000, 43 sec for 0..10000, 115 sec for 0..20000 (Pool with HashMap)
tikhomirov@263: 		// 2,4 sec for 1000..2000
tikhomirov@263: 		// cpython -r 1000: 484 files, -r 2000: 1015 files. Iteration 1000..2000; fnamePool.size:1019 nodeidPool.size:2989
tikhomirov@263: 		// nodeidPool for two subsequent revisions only: 840. 37 sec for 0..10000. 99 sec for 0..20k
tikhomirov@263: 		// 0..10000 fnamePool: hits:15989152, misses:3020
tikhomirov@268: 		//
tikhomirov@268: 		// With Pool<StringProxy> for fname and flags, Nodeid's ascii2bin through local array, overall byte[] iteration, 
tikhomirov@268: 		// 0..10k is 34 seconds now
tikhomirov@304: 		// Another run, 23 seconds now, seems nothing has been changed. Switched to Pool2 with DirectHashSet: 22,5 seconds
tikhomirov@263: 		System.out.printf("Total time: %d ms\n", System.currentTimeMillis() - start);
tikhomirov@263: 		System.out.printf("Free mem: %,d\n", Runtime.getRuntime().freeMemory());
tikhomirov@263: 	}
tikhomirov@326: 	
tikhomirov@326: 	private int[] collectLocalTagRevisions(HgChangelog.RevisionMap clogrmap, TagInfo[] allTags, IntMap<List<TagInfo>> tagLocalRev2TagInfo) {
tikhomirov@326: 		int[] tagLocalRevs = new int[allTags.length];
tikhomirov@326: 		int x = 0;
tikhomirov@326: 		for (int i = 0; i < allTags.length; i++) {
tikhomirov@326: 			final Nodeid tagRevision = allTags[i].revision();
tikhomirov@368: 			final int tagRevisionIndex = clogrmap.revisionIndex(tagRevision);
tikhomirov@368: 			if (tagRevisionIndex != HgRepository.BAD_REVISION) {
tikhomirov@368: 				tagLocalRevs[x++] = tagRevisionIndex;
tikhomirov@368: 				List<TagInfo> tagsAssociatedWithRevision = tagLocalRev2TagInfo.get(tagRevisionIndex);
tikhomirov@326: 				if (tagsAssociatedWithRevision == null) {
tikhomirov@368: 					tagLocalRev2TagInfo.put(tagRevisionIndex, tagsAssociatedWithRevision = new LinkedList<TagInfo>());
tikhomirov@326: 				}
tikhomirov@326: 				tagsAssociatedWithRevision.add(allTags[i]);
tikhomirov@326: 			}
tikhomirov@326: 		}
tikhomirov@326: 		if (x != allTags.length) {
tikhomirov@326: 			// some tags were removed (recorded Nodeid.NULL tagname)
tikhomirov@326: 			int[] copy = new int[x];
tikhomirov@326: 			System.arraycopy(tagLocalRevs, 0, copy, 0, x);
tikhomirov@326: 			tagLocalRevs = copy;
tikhomirov@326: 		}
tikhomirov@326: 		return tagLocalRevs;
tikhomirov@326: 	}
tikhomirov@263: 
tikhomirov@263: 	private void collectTagsPerFile() throws HgException, CancelledException {
tikhomirov@254: 		final long start = System.currentTimeMillis();
tikhomirov@254: 		final HgRepository repository = new HgLookup().detect(new File("/temp/hg/cpython"));
tikhomirov@254: 		final HgTags tags = repository.getTags();
tikhomirov@254: 		//
tikhomirov@254: 		// build cache
tikhomirov@255: 		//
tikhomirov@423: 		final TagInfo[] allTags = new TagInfo[tags.getAllTags().size()];
tikhomirov@423: 		tags.getAllTags().values().toArray(allTags);
tikhomirov@326: 		// effective translation of changeset revisions to their local indexes
tikhomirov@326: 		final HgChangelog.RevisionMap clogrmap = repository.getChangelog().new RevisionMap().init();
tikhomirov@326: 		// map to look up tag by changeset local number
tikhomirov@326: 		final IntMap<List<TagInfo>> tagLocalRev2TagInfo = new IntMap<List<TagInfo>>(allTags.length);
tikhomirov@326: 		System.out.printf("Collecting manifests for %d tags\n", allTags.length);
tikhomirov@326: 		final int[] tagLocalRevs = collectLocalTagRevisions(clogrmap, allTags, tagLocalRev2TagInfo);
tikhomirov@329: 		System.out.printf("Prepared %d tag revisions to analyze: %d ms\n", tagLocalRevs.length, System.currentTimeMillis() - start);
tikhomirov@326: 
tikhomirov@326: 		final Path targetPath = Path.create("README");
tikhomirov@326: 		//
tikhomirov@326: 		collectTagsPerFile_Approach_1(clogrmap, tagLocalRevs, allTags, targetPath);
tikhomirov@326: 		System.out.printf("Total time: %d ms\n", System.currentTimeMillis() - start);
tikhomirov@326: 
tikhomirov@326: 		System.out.println("\nApproach 2");
tikhomirov@326: 		collectTagsPerFile_Approach_2(repository, tagLocalRevs, tagLocalRev2TagInfo, allTags, targetPath);
tikhomirov@326: 	}
tikhomirov@326: 		
tikhomirov@326: 	// Approach 1. Build map with all files, their revisions and corresponding tags
tikhomirov@326: 	//
tikhomirov@354: 	private void collectTagsPerFile_Approach_1(final HgChangelog.RevisionMap clogrmap, final int[] tagLocalRevs, final TagInfo[] allTags, Path targetPath) throws HgException {
tikhomirov@326: 		HgRepository repository = clogrmap.getRepo();
tikhomirov@326: 		final long start = System.currentTimeMillis();
tikhomirov@255: 		// file2rev2tag value is array of revisions, always of allTags.length. Revision index in the array
tikhomirov@255: 		// is index of corresponding TagInfo in allTags;
tikhomirov@285: 		final Map<Path, Nodeid[]> file2rev2tag = new HashMap<Path, Nodeid[]>();
tikhomirov@424: 		repository.getManifest().walk(new HgManifest.Inspector() {
tikhomirov@256: 			private int[] tagIndexAtRev = new int[4]; // it's unlikely there would be a lot of tags associated with a given cset
tikhomirov@254: 
tikhomirov@254: 			public boolean begin(int mainfestRevision, Nodeid nid, int changelogRevision) {
tikhomirov@326: 				// may do better here using tagLocalRev2TagInfo, but need to change a lot, too lazy now
tikhomirov@254: 				Nodeid cset = clogrmap.revision(changelogRevision);
tikhomirov@256: 				Arrays.fill(tagIndexAtRev, -1);
tikhomirov@256: 				for (int i = 0, x = 0; i < allTags.length; i++) {
tikhomirov@255: 					if (cset.equals(allTags[i].revision())) {
tikhomirov@256: 						tagIndexAtRev[x++] = i;
tikhomirov@256: 						if (x == tagIndexAtRev.length) {
tikhomirov@256: 							// expand twice as much
tikhomirov@256: 							int[] expanded = new int[x << 1];
tikhomirov@256: 							System.arraycopy(tagIndexAtRev, 0, expanded, 0, x);
tikhomirov@256: 							expanded[x] = -1; // just in case there'd be no more tags associated with this cset
tikhomirov@256: 							tagIndexAtRev = expanded;
tikhomirov@256: 						}
tikhomirov@255: 					}
tikhomirov@255: 				}
tikhomirov@256: 				if (tagIndexAtRev[0] == -1) {
tikhomirov@254: 					System.out.println("Can't happen, provided we iterate over revisions with tags only");
tikhomirov@254: 				}
tikhomirov@254: 				return true;
tikhomirov@254: 			}
tikhomirov@285: 
tikhomirov@285: 			public boolean next(Nodeid nid, Path fname, HgManifest.Flags flags) {
tikhomirov@255: 				Nodeid[] m = file2rev2tag.get(fname);
tikhomirov@254: 				if (m == null) {
tikhomirov@255: 					file2rev2tag.put(fname, m = new Nodeid[allTags.length]);
tikhomirov@254: 				}
tikhomirov@255: 				for (int tagIndex : tagIndexAtRev) {
tikhomirov@256: 					if (tagIndex == -1) {
tikhomirov@256: 						break;
tikhomirov@256: 					}
tikhomirov@255: 					if (m[tagIndex] != null) {
tikhomirov@255: 						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());
tikhomirov@255: 					}
tikhomirov@255: 					m[tagIndex] = nid;
tikhomirov@254: 				}
tikhomirov@254: 				return true;
tikhomirov@254: 			}
tikhomirov@254: 			
tikhomirov@254: 			public boolean end(int manifestRevision) {
tikhomirov@254: 				return true;
tikhomirov@254: 			}
tikhomirov@254: 			
tikhomirov@254: 		}, tagLocalRevs);
tikhomirov@255: 		System.out.printf("Cache built: %d ms\n", System.currentTimeMillis() - start);
tikhomirov@254: 		//
tikhomirov@254: 		// look up specific file. This part is fast.
tikhomirov@254: 		HgDataFile fileNode = repository.getFileNode(targetPath);
tikhomirov@285: 		final Nodeid[] allTagsOfTheFile = file2rev2tag.get(targetPath);
tikhomirov@254: 		// TODO if fileNode.isCopy, repeat for each getCopySourceName()
tikhomirov@368: 		for (int fileRevIndex = 0; fileRevIndex < fileNode.getRevisionCount(); fileRevIndex++) {
tikhomirov@368: 			Nodeid fileRev = fileNode.getRevision(fileRevIndex);
tikhomirov@368: 			int changesetRevIndex = fileNode.getChangesetRevisionIndex(fileRevIndex);
tikhomirov@254: 			List<String> associatedTags = new LinkedList<String>();
tikhomirov@255: 			for (int i = 0; i < allTagsOfTheFile.length; i++) {
tikhomirov@255: 				if (fileRev.equals(allTagsOfTheFile[i])) {
tikhomirov@255: 					associatedTags.add(allTags[i].name());
tikhomirov@254: 				}
tikhomirov@254: 			}
tikhomirov@368: 			System.out.printf("%3d%7d%s\n", fileRevIndex, changesetRevIndex, associatedTags);
tikhomirov@254: 		}
tikhomirov@326: 	}
tikhomirov@326: 	
tikhomirov@366: 	private void collectTagsPerFile_Approach_2(HgRepository repository, final int[] tagLocalRevs, final IntMap<List<TagInfo>> tagLocalRev2TagInfo, TagInfo[] allTags, Path targetPath) throws HgException {
tikhomirov@326: 		//
tikhomirov@326: 		// Approach 2. No all-file map. Collect file revisions recorded at the time of tagging,
tikhomirov@326: 		// then for each file revision check if it is among those above, and if yes, take corresponding tags
tikhomirov@326: 		HgDataFile fileNode = repository.getFileNode(targetPath);
tikhomirov@326: 		final long start2 = System.nanoTime();
tikhomirov@326: 		final int lastRev = fileNode.getLastRevision();
tikhomirov@426: 		final Map<Integer, Nodeid> fileRevisionAtTagRevision = new HashMap<Integer, Nodeid>();
tikhomirov@426: 		HgManifest.Inspector collectFileRevAtCset = new HgManifest.Inspector() {
tikhomirov@426: 			
tikhomirov@426: 			private int csetRevIndex;
tikhomirov@426: 
tikhomirov@426: 			public boolean next(Nodeid nid, Path fname, Flags flags) {
tikhomirov@426: 				fileRevisionAtTagRevision.put(csetRevIndex, nid);
tikhomirov@426: 				return true;
tikhomirov@426: 			}
tikhomirov@426: 			
tikhomirov@426: 			public boolean end(int manifestRevision) {
tikhomirov@426: 				return true;
tikhomirov@426: 			}
tikhomirov@426: 			
tikhomirov@426: 			public boolean begin(int mainfestRevision, Nodeid nid, int changelogRevision) {
tikhomirov@426: 				csetRevIndex = changelogRevision;
tikhomirov@426: 				return true;
tikhomirov@426: 			}
tikhomirov@426: 		};
tikhomirov@426: 		repository.getManifest().walkFileRevisions(targetPath, collectFileRevAtCset,tagLocalRevs);
tikhomirov@426: 
tikhomirov@326: 		final long start2a = System.nanoTime();
tikhomirov@326: 		fileNode.walk(0, lastRev, new HgDataFile.RevisionInspector() {
tikhomirov@326: 
tikhomirov@368: 			public void next(int fileRevisionIndex, Nodeid fileRevision, int changesetRevisionIndex) {
tikhomirov@326: 				List<String> associatedTags = new LinkedList<String>();
tikhomirov@326: 				for (int taggetRevision : tagLocalRevs) {
tikhomirov@326: 					// current file revision can't appear in tags that point to earlier changelog revisions (they got own file revision)
tikhomirov@368: 					if (taggetRevision >= changesetRevisionIndex) {
tikhomirov@326: 						// z points to some changeset with tag
tikhomirov@326: 						Nodeid wasKnownAs = fileRevisionAtTagRevision.get(taggetRevision);
tikhomirov@326: 						if (wasKnownAs.equals(fileRevision)) {
tikhomirov@326: 							// has tag associated with changeset at index z
tikhomirov@326: 							List<TagInfo> tagsAtRev = tagLocalRev2TagInfo.get(taggetRevision);
tikhomirov@326: 							assert tagsAtRev != null;
tikhomirov@326: 							for (TagInfo ti : tagsAtRev) {
tikhomirov@326: 								associatedTags.add(ti.name());
tikhomirov@326: 							}
tikhomirov@326: 						}
tikhomirov@326: 					}
tikhomirov@326: 				}
tikhomirov@368: 				System.out.printf("%3d%7d%s\n", fileRevisionIndex, changesetRevisionIndex, associatedTags);
tikhomirov@326: 			}
tikhomirov@326: 		});
tikhomirov@326: 		System.out.printf("Alternative total time: %d ms, of that init: %d ms\n", (System.nanoTime() - start2)/1000000, (start2a-start2)/1000000);
tikhomirov@255: 		System.out.printf("Free mem: %,d\n", Runtime.getRuntime().freeMemory());
tikhomirov@254: 	}
tikhomirov@254: 
tikhomirov@424: 	static class DoNothingManifestInspector implements HgManifest.Inspector {
tikhomirov@329: 		public boolean begin(int mainfestRevision, Nodeid nid, int changelogRevision) {
tikhomirov@329: 			return true;
tikhomirov@329: 		}
tikhomirov@329: 		public boolean next(Nodeid nid, Path fname, Flags flags) {
tikhomirov@329: 			return true;
tikhomirov@329: 		}
tikhomirov@329: 		public boolean end(int manifestRevision) {
tikhomirov@329: 			return true;
tikhomirov@329: 		}
tikhomirov@329: 	}
tikhomirov@329: 	
tikhomirov@423: 	public static void main2(String[] args) throws HgCallbackTargetException, HgException, CancelledException {
tikhomirov@254: 		final HgRepository repository = new HgLookup().detect(new File("/temp/hg/cpython"));
tikhomirov@254: 		final Path targetPath = Path.create("README");
tikhomirov@254: 		final HgTags tags = repository.getTags();
tikhomirov@423: 		final Map<String, HgTags.TagInfo> tagToInfo = tags.getAllTags();
tikhomirov@254: 		final HgManifest manifest = repository.getManifest();
tikhomirov@254: 		final Map<Nodeid, List<String>> changeSetRevisionToTags = new HashMap<Nodeid, List<String>>();
tikhomirov@254: 		final HgDataFile fileNode = repository.getFileNode(targetPath);
tikhomirov@254: 		for (String tagName : tagToInfo.keySet()) {
tikhomirov@254: 			final HgTags.TagInfo info = tagToInfo.get(tagName);
tikhomirov@254: 			final Nodeid nodeId = info.revision();
tikhomirov@254: 			// 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.)
tikhomirov@367: 			final Nodeid fileRevision = manifest.getFileRevision(repository.getChangelog().getRevisionIndex(nodeId), targetPath);
tikhomirov@254: 			if (fileRevision == null) {
tikhomirov@254: 				continue;
tikhomirov@254: 			}
tikhomirov@254: 
tikhomirov@254: 			final Nodeid changeSetRevision = fileNode.getChangesetRevision(fileRevision);
tikhomirov@254: 			List<String> revisionTags = changeSetRevisionToTags.get(changeSetRevision);
tikhomirov@254: 			if (revisionTags == null) {
tikhomirov@254: 				revisionTags = new ArrayList<String>();
tikhomirov@254: 				changeSetRevisionToTags.put(changeSetRevision, revisionTags);
tikhomirov@254: 			}
tikhomirov@254: 			revisionTags.add(tagName);
tikhomirov@254: 		}
tikhomirov@254: 
tikhomirov@254: 		final HgLogCommand logCommand = new HgLogCommand(repository);
tikhomirov@254: 		logCommand.file(targetPath, true);
tikhomirov@254: 		logCommand.execute(new HgChangesetHandler() {
tikhomirov@254: 			public void next(HgChangeset changeset) {
tikhomirov@254: 				if (changeset.getAffectedFiles().contains(targetPath)) {
tikhomirov@423: 					System.out.println(changeset.getRevisionIndex() + " " + changeSetRevisionToTags.get(changeset.getNodeid()));
tikhomirov@254: 				}
tikhomirov@254: 			}
tikhomirov@254: 		});
tikhomirov@254: 	}
tikhomirov@254: }