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comparison tests/test-branches.t @ 24378:9347c15d8136

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revbranchcache: write cache even during read operations Previously we would only actually write the revbranchcache to disk if we were in the middle of a write operation (like commit). Now we will also write it during any read operation. The cache knows how to invalidate itself, so it shouldn't become corrupt if multiple writers try at once (and the write-on-read behavior/risk is the same as all our other caches).
author Durham Goode <durham@fb.com>
date Tue, 24 Feb 2015 18:43:31 -0800
parents 577f65cf1a57
children 701df761aa94
comparison
equal deleted inserted replaced
24377:656f93ce66d5 24378:9347c15d8136
559 #endif 559 #endif
560 560
561 recovery from invalid cache revs file with trailing data 561 recovery from invalid cache revs file with trailing data
562 $ echo >> .hg/cache/rbc-revs-v1 562 $ echo >> .hg/cache/rbc-revs-v1
563 $ rm -f .hg/cache/branch* && hg head a -T '{rev}\n' --debug 563 $ rm -f .hg/cache/branch* && hg head a -T '{rev}\n' --debug
564 5
564 truncating cache/rbc-revs-v1 to 120 565 truncating cache/rbc-revs-v1 to 120
565 5
566 $ f --size .hg/cache/rbc-revs* 566 $ f --size .hg/cache/rbc-revs*
567 .hg/cache/rbc-revs-v1: size=120 567 .hg/cache/rbc-revs-v1: size=120
568 recovery from invalid cache file with partial last record 568 recovery from invalid cache file with partial last record
569 $ mv .hg/cache/rbc-revs-v1 . 569 $ mv .hg/cache/rbc-revs-v1 .
570 $ f -qDB 119 rbc-revs-v1 > .hg/cache/rbc-revs-v1 570 $ f -qDB 119 rbc-revs-v1 > .hg/cache/rbc-revs-v1
571 $ f --size .hg/cache/rbc-revs* 571 $ f --size .hg/cache/rbc-revs*
572 .hg/cache/rbc-revs-v1: size=119 572 .hg/cache/rbc-revs-v1: size=119
573 $ rm -f .hg/cache/branch* && hg head a -T '{rev}\n' --debug 573 $ rm -f .hg/cache/branch* && hg head a -T '{rev}\n' --debug
574 5
574 truncating cache/rbc-revs-v1 to 112 575 truncating cache/rbc-revs-v1 to 112
575 5
576 $ f --size .hg/cache/rbc-revs* 576 $ f --size .hg/cache/rbc-revs*
577 .hg/cache/rbc-revs-v1: size=120 577 .hg/cache/rbc-revs-v1: size=120
578 recovery from invalid cache file with missing record - no truncation 578 recovery from invalid cache file with missing record - no truncation
579 $ mv .hg/cache/rbc-revs-v1 . 579 $ mv .hg/cache/rbc-revs-v1 .
580 $ f -qDB 112 rbc-revs-v1 > .hg/cache/rbc-revs-v1 580 $ f -qDB 112 rbc-revs-v1 > .hg/cache/rbc-revs-v1
588 $ f --size .hg/cache/rbc-revs* 588 $ f --size .hg/cache/rbc-revs*
589 .hg/cache/rbc-revs-v1: size=8 589 .hg/cache/rbc-revs-v1: size=8
590 $ f -qDB 112 rbc-revs-v1 >> .hg/cache/rbc-revs-v1 590 $ f -qDB 112 rbc-revs-v1 >> .hg/cache/rbc-revs-v1
591 $ f --size .hg/cache/rbc-revs* 591 $ f --size .hg/cache/rbc-revs*
592 .hg/cache/rbc-revs-v1: size=120 592 .hg/cache/rbc-revs-v1: size=120
593 $ hg log -r 'branch(.)' -T '{rev} ' 593 $ hg log -r 'branch(.)' -T '{rev} ' --debug
594 3 4 8 9 10 11 12 13 (no-eol) 594 3 4 8 9 10 11 12 13 truncating cache/rbc-revs-v1 to 8
595 $ rm -f .hg/cache/branch* && hg head a -T '{rev}\n' --debug 595 $ rm -f .hg/cache/branch* && hg head a -T '{rev}\n' --debug
596 truncating cache/rbc-revs-v1 to 8
597 5 596 5
597 truncating cache/rbc-revs-v1 to 104
598 $ f --size --hexdump --bytes=16 .hg/cache/rbc-revs* 598 $ f --size --hexdump --bytes=16 .hg/cache/rbc-revs*
599 .hg/cache/rbc-revs-v1: size=120 599 .hg/cache/rbc-revs-v1: size=120
600 0000: 19 70 9c 5a 00 00 00 00 dd 6b 44 0d 00 00 00 01 |.p.Z.....kD.....| 600 0000: 19 70 9c 5a 00 00 00 00 dd 6b 44 0d 00 00 00 01 |.p.Z.....kD.....|
601 cache is updated when committing 601 cache is updated when committing
602 $ hg branch i-will-regret-this 602 $ hg branch i-will-regret-this