jgit/org.eclipse.jgit at b513b7747713a505e19e237ac2e7f8d9c699bc4d - jgit

纯java实现的git操作库。

Matthias Sohn b513b77477 Measure file timestamp resolution used in FileSnapshot FileSnapshot.notRacyClean() assumed a worst case filesystem timestamp resolution of 2.5 sec (FAT has a resolution of 2 sec). Instead measure timestamp resolution to avoid unnecessary IO caused by false positives in detecting the racy git problem caused by finite filesystem timestamp resolution [1]. Cache the measured resolution per FileStore since timestamp resolution depends on the respective filesystem type. If timestamp resolution cannot be measured or fails due to an exception fallback to the worst case FAT timestamp resolution and avoid caching this value. Add a 10% safety margin in FileSnapshot.notRacyClean(), though running FsTest.testFsTimestampResolution() 1000 times which is not using a safety margin didn't fail on Mac using APFS and Java 8, 11, 12. Measured Java file timestamp resolution: [2] [1] https://github.com/git/git/blob/master/Documentation/technical/racy-git.txt [2] https://docs.google.com/spreadsheets/d/1imy0y6WmRqBf0kjCxzxj2X7M50eIVfa7oaUIzEOHmjo Bug: 546891 Change-Id: I493f3b57b6b306285ffa7d392339d253e5966ab8 Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>		5 years ago
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.settings	Measure file timestamp resolution used in FileSnapshot	5 years ago
META-INF	Prepare 5.1.8-SNAPSHOT builds	6 years ago
findBugs	[findBugs] Silence warning about Transport initialization	12 years ago
resources/org/eclipse/jgit	Merge branch 'stable-4.11' into stable-5.0	6 years ago
src/org/eclipse/jgit	Measure file timestamp resolution used in FileSnapshot	5 years ago
.classpath	Change JGit minimum execution environment to JavaSE-1.8	8 years ago
.fbprefs	…
.gitignore	…
.project	…
BUILD	Bazel: Support building with Java 9	7 years ago
about.html	SHA-1: collision detection support	8 years ago
build.properties	…
plugin.properties	Remove incubation marker	14 years ago
pom.xml	Prepare 5.1.8-SNAPSHOT builds	6 years ago