- 24 Oct, 2018 1 commit
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Jakob Kummerow authored
as part of the continuing quest to get rid of Object*/Object**. This is a fairly mechanical replacement of Object**/MaybeObject** with wrapper objects carrying the same data. No change in behavior is intended. Overloaded operators are provided to minimize code churn. Bug: v8:3770 Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng Change-Id: I76cee82b8bf2dd80a1b66f09dd2bb2b65038eeb7 Reviewed-on: https://chromium-review.googlesource.com/c/1287889 Commit-Queue: Jakob Kummerow <jkummerow@chromium.org> Reviewed-by:
Hannes Payer <hpayer@chromium.org> Reviewed-by:
Yang Guo <yangguo@chromium.org> Reviewed-by:
Ross McIlroy <rmcilroy@chromium.org> Reviewed-by:
Ulan Degenbaev <ulan@chromium.org> Cr-Commit-Position: refs/heads/master@{#56920}
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- 12 Oct, 2018 1 commit
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Clemens Hammacher authored
LockGuard is mostly used with Mutex. Since both are defined outside the internal namespace, we often have to write {base::LockGuard<base::Mutex>}. This CL shortens this to {base::MutexGuard} across the code base R=mlippautz@chromium.org Bug: v8:8238 Cq-Include-Trybots: luci.chromium.try:linux_chromium_headless_rel;master.tryserver.blink:linux_trusty_blink_rel Change-Id: I020d5933b73aafb98c4b72e3bb2dfd07c979ba73 Reviewed-on: https://chromium-review.googlesource.com/c/1278796Reviewed-by:
Michael Lippautz <mlippautz@chromium.org> Reviewed-by:
Yang Guo <yangguo@chromium.org> Commit-Queue: Clemens Hammacher <clemensh@chromium.org> Cr-Commit-Position: refs/heads/master@{#56612}
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- 02 Feb, 2018 1 commit
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jgruber authored
This check verifies that all .h files in the src/ directory have an include guard of the form #ifndef V8_PATH_TO_FILE_H_ #define V8_PATH_TO_FILE_H_ // ... #endif // V8_PATH_TO_FILE_H_ The check can be skipped with a magic comment: // PRESUBMIT_INTENTIONALLY_MISSING_INCLUDE_GUARD Cq-Include-Trybots: luci.v8.try:v8_linux_noi18n_rel_ng;master.tryserver.blink:linux_trusty_blink_rel Change-Id: I0a7b96abec289ad60f64ba8418f1892a6969596d Reviewed-on: https://chromium-review.googlesource.com/897487Reviewed-by:
Benedikt Meurer <bmeurer@chromium.org> Reviewed-by:
Aleksey Kozyatinskiy <kozyatinskiy@chromium.org> Reviewed-by:
Georg Neis <neis@chromium.org> Reviewed-by:
Michael Starzinger <mstarzinger@chromium.org> Reviewed-by:
Andreas Haas <ahaas@chromium.org> Commit-Queue: Jakob Gruber <jgruber@chromium.org> Cr-Commit-Position: refs/heads/master@{#51079}
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- 06 Nov, 2017 1 commit
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Clemens Hammacher authored
This is a reland of 7d231e57, fixed to avoid instantiating CountLeadingZeros for bits==0. Original change's description: > [bits] Consolidate Count{Leading,Trailing}Zeros > > Instead of having one method for 32 bit integers and one for 64 bit, > plus a templatized version to choose from those two, just implement one > version which handles unsigned integers of any size. Also, make them > constexpr. > The Count{Leading,Trailing}Zeros{32,64} methods are kept for now in > order to keep the amount of code changes small. Also, sometimes it > improves readability by stating exactly the size of the argument, > especially for leading zeros (where zero-extending would add more > leading zeros). > > CountLeadingZeros now uses a binary search inspired implementation > as proposed in Hacker's Delight. It's more than 20% faster on x64 if > the builtins are disabled. > CountTrailingZeros falls back to CountPopulation instead of counting in > a naive loop. This is ~50% faster. > > R=mstarzinger@chromium.org > > Change-Id: I1d8bf1d7295b930724163248150444bd17fbb34e > Reviewed-on: https://chromium-review.googlesource.com/741231 > Reviewed-by: Michael Starzinger <mstarzinger@chromium.org> > Commit-Queue: Clemens Hammacher <clemensh@chromium.org> > Cr-Commit-Position: refs/heads/master@{#49106} Change-Id: Icdff2510ec66d1c96a1912cef29d77d8550994ee Reviewed-on: https://chromium-review.googlesource.com/753903Reviewed-by:
Michael Starzinger <mstarzinger@chromium.org> Commit-Queue: Clemens Hammacher <clemensh@chromium.org> Cr-Commit-Position: refs/heads/master@{#49138}
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- 04 Nov, 2017 1 commit
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Michael Achenbach authored
This reverts commit 7d231e57. Reason for revert: Breaks revert for win-clang: https://build.chromium.org/p/tryserver.chromium.win/builders/win_clang/builds/342755 Original change's description: > [bits] Consolidate Count{Leading,Trailing}Zeros > > Instead of having one method for 32 bit integers and one for 64 bit, > plus a templatized version to choose from those two, just implement one > version which handles unsigned integers of any size. Also, make them > constexpr. > The Count{Leading,Trailing}Zeros{32,64} methods are kept for now in > order to keep the amount of code changes small. Also, sometimes it > improves readability by stating exactly the size of the argument, > especially for leading zeros (where zero-extending would add more > leading zeros). > > CountLeadingZeros now uses a binary search inspired implementation > as proposed in Hacker's Delight. It's more than 20% faster on x64 if > the builtins are disabled. > CountTrailingZeros falls back to CountPopulation instead of counting in > a naive loop. This is ~50% faster. > > R=mstarzinger@chromium.org > > Change-Id: I1d8bf1d7295b930724163248150444bd17fbb34e > Reviewed-on: https://chromium-review.googlesource.com/741231 > Reviewed-by: Michael Starzinger <mstarzinger@chromium.org> > Commit-Queue: Clemens Hammacher <clemensh@chromium.org> > Cr-Commit-Position: refs/heads/master@{#49106} TBR=mstarzinger@chromium.org,clemensh@chromium.org Change-Id: Iceeb35bf9c7539a1013c9bdbc47118008611bef2 No-Presubmit: true No-Tree-Checks: true No-Try: true Reviewed-on: https://chromium-review.googlesource.com/753463Reviewed-by:
Michael Achenbach <machenbach@chromium.org> Cr-Commit-Position: refs/heads/master@{#49123}
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- 03 Nov, 2017 1 commit
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Clemens Hammacher authored
Instead of having one method for 32 bit integers and one for 64 bit, plus a templatized version to choose from those two, just implement one version which handles unsigned integers of any size. Also, make them constexpr. The Count{Leading,Trailing}Zeros{32,64} methods are kept for now in order to keep the amount of code changes small. Also, sometimes it improves readability by stating exactly the size of the argument, especially for leading zeros (where zero-extending would add more leading zeros). CountLeadingZeros now uses a binary search inspired implementation as proposed in Hacker's Delight. It's more than 20% faster on x64 if the builtins are disabled. CountTrailingZeros falls back to CountPopulation instead of counting in a naive loop. This is ~50% faster. R=mstarzinger@chromium.org Change-Id: I1d8bf1d7295b930724163248150444bd17fbb34e Reviewed-on: https://chromium-review.googlesource.com/741231Reviewed-by:
Michael Starzinger <mstarzinger@chromium.org> Commit-Queue: Clemens Hammacher <clemensh@chromium.org> Cr-Commit-Position: refs/heads/master@{#49106}
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- 15 Sep, 2017 1 commit
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Ulan Degenbaev authored
Empty slot set buckets can leak in the following scenarios. Scenario 1 (large object space): 1) A large array is allocated in the large object space. 2) The array is filled with old->new references, which allocates new slot set buckets. 3) The references are overwritten with smis or old space pointers, which make the slots set buckets empty. 4) Garbage collection (scavenge or mark-compact) iterates the slots set of the array and pre-frees the empty buckets. 5) Steps 2-4 repeated many times and leak arbitary many empty buckets. The fix to free empty buckets for large object space in mark-compact. Scenario 2 (no mark-compact): 1) A small array is allocated in the old space. 2) The array is filled with old->new references, which allocates new slot set buckets. 3) The references are overwritten with smis or old space pointers, which make the slots set buckets empty. 4) Scavenge iterates the slots set of the array and pre-frees the empty buckets. 5) Steps 2-4 repeated many times and leak arbitary many empty buckets. The fix to free empty buckets for swept pages in scavenger. Bug: v8:6800 TBR: mlippautz@chromium.org Change-Id: I48d94870f5acf4f6208858271886911c895a9126 Reviewed-on: https://chromium-review.googlesource.com/668442Reviewed-by:
Ulan Degenbaev <ulan@chromium.org> Commit-Queue: Ulan Degenbaev <ulan@chromium.org> Cr-Commit-Position: refs/heads/master@{#48041}
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- 16 Aug, 2017 1 commit
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Yang Guo authored
This removes: - CodeBreakIterator for FCG code. - RelocModes for debug breaks. - Code generator for debug break slots. - GC support for debug break slots. - Code flag to indicate code with debug break slots. - Builtin type DBG. - Mechanisms to replace FCG code in the debugger and LiveEdit. - Runtime entry to the debugger from debug break slots. R=bmeurer@chromium.org, rmcilroy@chromium.org, ulan@chromium.org Bug: v8:6409 Change-Id: I5662c8800e3ef1b1584ad107bfe0aae26c9d8abb Reviewed-on: https://chromium-review.googlesource.com/613263Reviewed-by:
Benedikt Meurer <bmeurer@chromium.org> Reviewed-by:
Ulan Degenbaev <ulan@chromium.org> Reviewed-by:
Ross McIlroy <rmcilroy@chromium.org> Commit-Queue: Yang Guo <yangguo@chromium.org> Cr-Commit-Position: refs/heads/master@{#47364}
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- 03 Aug, 2017 1 commit
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Ulan Degenbaev authored
This is a reland of 35c923cc Original change's description: > [heap] Add support for atomic access to page flags. > > This patch renames AsAtomicWord to AsAtomicPointer and > adds new AsAtomicWord that works with intptr_t. > > Slot recording uses atomic page flag accessors. > > BUG=chromium:694255 > > Change-Id: I1c692813244b41320182e9eea50462d1802fcd98 > Reviewed-on: https://chromium-review.googlesource.com/597688 > Commit-Queue: Ulan Degenbaev <ulan@chromium.org> > Reviewed-by: Michael Lippautz <mlippautz@chromium.org> > Cr-Commit-Position: refs/heads/master@{#47086} Bug: chromium:694255 Change-Id: I36780ff4001e068815d4be1e16cd06f1a4f98d13 Reviewed-on: https://chromium-review.googlesource.com/599909Reviewed-by:
Michael Lippautz <mlippautz@chromium.org> Commit-Queue: Ulan Degenbaev <ulan@chromium.org> Cr-Commit-Position: refs/heads/master@{#47131}
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- 02 Aug, 2017 2 commits
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Ulan Degenbaev authored
This reverts commit 35c923cc. Reason for revert: speculative revert for GC stress failure Original change's description: > [heap] Add support for atomic access to page flags. > > This patch renames AsAtomicWord to AsAtomicPointer and > adds new AsAtomicWord that works with intptr_t. > > Slot recording uses atomic page flag accessors. > > BUG=chromium:694255 > > Change-Id: I1c692813244b41320182e9eea50462d1802fcd98 > Reviewed-on: https://chromium-review.googlesource.com/597688 > Commit-Queue: Ulan Degenbaev <ulan@chromium.org> > Reviewed-by: Michael Lippautz <mlippautz@chromium.org> > Cr-Commit-Position: refs/heads/master@{#47086} TBR=ulan@chromium.org,mlippautz@chromium.org Change-Id: Id77ce7970c54a55646c072787e88311f6f3e6e91 No-Presubmit: true No-Tree-Checks: true No-Try: true Bug: chromium:694255 Reviewed-on: https://chromium-review.googlesource.com/598967Reviewed-by:
Ulan Degenbaev <ulan@chromium.org> Commit-Queue: Ulan Degenbaev <ulan@chromium.org> Cr-Commit-Position: refs/heads/master@{#47094}
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Ulan Degenbaev authored
This patch renames AsAtomicWord to AsAtomicPointer and adds new AsAtomicWord that works with intptr_t. Slot recording uses atomic page flag accessors. BUG=chromium:694255 Change-Id: I1c692813244b41320182e9eea50462d1802fcd98 Reviewed-on: https://chromium-review.googlesource.com/597688 Commit-Queue: Ulan Degenbaev <ulan@chromium.org> Reviewed-by:
Michael Lippautz <mlippautz@chromium.org> Cr-Commit-Position: refs/heads/master@{#47086}
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- 01 Aug, 2017 1 commit
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Yang Guo authored
Change-Id: Ida5c537fa94a376a134e60edce889b96b676a8f9 Reviewed-on: https://chromium-review.googlesource.com/584874Reviewed-by:
Michael Starzinger <mstarzinger@chromium.org> Reviewed-by:
Benedikt Meurer <bmeurer@chromium.org> Commit-Queue: Yang Guo <yangguo@chromium.org> Cr-Commit-Position: refs/heads/master@{#47039}
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- 18 Jul, 2017 1 commit
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Michael Lippautz authored
This will allow us to concurrently allocate buckets during iteration. Bug: chromium:738865 Change-Id: I88bd1ac152d1ef8b40395f0ba3e55a7c3e82f75d Reviewed-on: https://chromium-review.googlesource.com/575990 Commit-Queue: Michael Lippautz <mlippautz@chromium.org> Reviewed-by:
Ulan Degenbaev <ulan@chromium.org> Cr-Commit-Position: refs/heads/master@{#46737}
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- 17 Jul, 2017 1 commit
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Michael Lippautz authored
Bug: chromium:738865 Change-Id: I4c8aa8c90ba401200222d95d6395c022fc023a71 Reviewed-on: https://chromium-review.googlesource.com/574535 Commit-Queue: Michael Lippautz <mlippautz@chromium.org> Reviewed-by:
Ulan Degenbaev <ulan@chromium.org> Cr-Commit-Position: refs/heads/master@{#46715}
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- 20 Jun, 2017 1 commit
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Michael Lippautz authored
A follow up will allow inserting slots during GC without emiting fences Bug: chromium:651354 Change-Id: Ia1d0f88e3658bca31933bdb013db15a5c2ecd849 Reviewed-on: https://chromium-review.googlesource.com/541400 Commit-Queue: Michael Lippautz <mlippautz@chromium.org> Reviewed-by:
Ulan Degenbaev <ulan@chromium.org> Cr-Commit-Position: refs/heads/master@{#46042}
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- 19 Jun, 2017 1 commit
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Michael Lippautz authored
This avoids emitting the costly barriers on arm. Bug: chromium:651354 Change-Id: Ibb29e58f7c41aab37ed5c4971b2a754b4ecd7155 Reviewed-on: https://chromium-review.googlesource.com/533337 Commit-Queue: Michael Lippautz <mlippautz@chromium.org> Reviewed-by:
Ulan Degenbaev <ulan@chromium.org> Cr-Commit-Position: refs/heads/master@{#46011}
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- 16 Jun, 2017 1 commit
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Ulan Degenbaev authored
This patch makes the SlotSet bucket type non-atomic by default and explicitly converts buckets to Atomic32/AtomicWord for each operation. Change-Id: Ifaa60a53eb68ca579185be23e379995aeeabe343 Reviewed-on: https://chromium-review.googlesource.com/535481 Commit-Queue: Ulan Degenbaev <ulan@chromium.org> Reviewed-by:
Michael Lippautz <mlippautz@chromium.org> Cr-Commit-Position: refs/heads/master@{#45971}
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- 28 Nov, 2016 1 commit
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ishell authored
BUG=chromium:666046 Review-Url: https://codereview.chromium.org/2539503002 Cr-Commit-Position: refs/heads/master@{#41330}
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- 21 Oct, 2016 1 commit
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hpayer authored
Additionally, remove all code related to the old-style slots filtering and black area end markers. BUG=chromium:648568 Review-Url: https://chromiumcodereview.appspot.com/2440683002 Cr-Commit-Position: refs/heads/master@{#40494}
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- 18 Oct, 2016 1 commit
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hpayer authored
BUG=chromium:648568 Review-Url: https://codereview.chromium.org/2428493003 Cr-Commit-Position: refs/heads/master@{#40393}
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- 14 Oct, 2016 1 commit
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machenbach authored
Revert of [heap] Move slot filtering logic into sweeper. (patchset #4 id:60001 of https://codereview.chromium.org/2418773002/ ) Reason for revert: [Sheriff] Speculative revert for heap corruption on all platforms, e.g.: https://build.chromium.org/p/client.v8/builders/V8%20Linux64%20-%20debug/builds/12377 https://build.chromium.org/p/client.v8/builders/V8%20Linux64%20-%20debug/builds/12379 https://build.chromium.org/p/client.v8/builders/V8%20Win32/builds/4819 https://build.chromium.org/p/client.v8/builders/V8%20Win32%20-%20nosnap%20-%20shared/builds/16783 https://build.chromium.org/p/client.v8/builders/V8%20Mac64%20-%20debug/builds/10007 Original issue's description: > [heap] Move slot filtering logic into sweeper. > > BUG=chromium:648568 > > Committed: https://crrev.com/18db69c38c93450c1ae957999fc48c465f111f00 > Cr-Commit-Position: refs/heads/master@{#40267} TBR=ulan@chromium.org,mlippautz@chromium.org,hpayer@chromium.org # Skipping CQ checks because original CL landed less than 1 days ago. NOPRESUBMIT=true NOTREECHECKS=true NOTRY=true BUG=chromium:648568 Review-Url: https://codereview.chromium.org/2418053002 Cr-Commit-Position: refs/heads/master@{#40292}
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- 13 Oct, 2016 1 commit
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hpayer authored
BUG=chromium:648568 Review-Url: https://codereview.chromium.org/2418773002 Cr-Commit-Position: refs/heads/master@{#40267}
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- 12 Oct, 2016 1 commit
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hpayer authored
BUG=chromium:648568 Review-Url: https://codereview.chromium.org/2403423007 Cr-Commit-Position: refs/heads/master@{#40221}
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- 11 Oct, 2016 2 commits
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hpayer authored
BUG=chromium:648568 Review-Url: https://codereview.chromium.org/2412453003 Cr-Commit-Position: refs/heads/master@{#40176}
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hpayer authored
BUG=chromium:648568 Review-Url: https://codereview.chromium.org/2409163002 Cr-Commit-Position: refs/heads/master@{#40174}
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- 07 Oct, 2016 1 commit
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hpayer authored
BUG=chromium:648568 Review-Url: https://codereview.chromium.org/2397373002 Cr-Commit-Position: refs/heads/master@{#40075}
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- 06 Oct, 2016 3 commits
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hpayer authored
Revert of [heap] Concurrent slot filtering in sweeper threads. (patchset #4 id:60001 of https://codereview.chromium.org/2401563002/ ) Reason for revert: Crashing. Original issue's description: > [heap] Concurrent slot filtering in sweeper threads. > > This is an intermediate step for concurrent slot filtering. This CL already makes filtering concurrent, but does not integrate it in the actual sweeping. This will be done in two follow up CLs. One for the regular slot set and one for the typed slot set. > > BUG=chromium:648568 > > Committed: https://crrev.com/1f89d369fc952a2826f9f62901fb84fcf30920d7 > Cr-Commit-Position: refs/heads/master@{#40040} TBR=ulan@chromium.org,mlippautz@chromium.org # Skipping CQ checks because original CL landed less than 1 days ago. NOPRESUBMIT=true NOTREECHECKS=true NOTRY=true BUG=chromium:648568 Review-Url: https://codereview.chromium.org/2399003002 Cr-Commit-Position: refs/heads/master@{#40043}
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hpayer authored
This is an intermediate step for concurrent slot filtering. This CL already makes filtering concurrent, but does not integrate it in the actual sweeping. This will be done in two follow up CLs. One for the regular slot set and one for the typed slot set. BUG=chromium:648568 Review-Url: https://codereview.chromium.org/2401563002 Cr-Commit-Position: refs/heads/master@{#40040}
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hpayer authored
BUG=chromium:648568 Review-Url: https://codereview.chromium.org/2397473004 Cr-Commit-Position: refs/heads/master@{#40034}
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- 05 Oct, 2016 1 commit
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hpayer authored
BUG=chromium:648568 Review-Url: https://codereview.chromium.org/2390743005 Cr-Commit-Position: refs/heads/master@{#39982}
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- 27 Sep, 2016 1 commit
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hpayer authored
BUG=chromium:650577,chromium:648568 Review-Url: https://codereview.chromium.org/2372933003 Cr-Commit-Position: refs/heads/master@{#39767}
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- 26 Sep, 2016 1 commit
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hpayer authored
BUG=chromium:648568 Review-Url: https://codereview.chromium.org/2366393002 Cr-Commit-Position: refs/heads/master@{#39735}
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- 22 Sep, 2016 3 commits
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machenbach authored
Revert of [heap] Reland Concurrently free empty typed slot set chunks. (patchset #2 id:20001 of https://codereview.chromium.org/2365603002/ ) Reason for revert: Leaks and TSAN: https://build.chromium.org/p/client.v8/builders/V8%20Linux64%20ASAN/builds/15441 https://build.chromium.org/p/client.v8/builders/V8%20Linux64%20TSAN/builds/11867 Original issue's description: > [heap] Reland Concurrently free empty typed slot set chunks. > > BUG=chromium:648568 > > Committed: https://crrev.com/ec3835751d678c0b4a3fda47d11ffa107cd27e23 > Cr-Commit-Position: refs/heads/master@{#39630} TBR=ulan@chromium.org,hpayer@chromium.org # Skipping CQ checks because original CL landed less than 1 days ago. NOPRESUBMIT=true NOTREECHECKS=true NOTRY=true BUG=chromium:648568 Review-Url: https://codereview.chromium.org/2364603002 Cr-Commit-Position: refs/heads/master@{#39632}
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hpayer authored
BUG=chromium:648568 Review-Url: https://codereview.chromium.org/2365603002 Cr-Commit-Position: refs/heads/master@{#39630}
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hpayer authored
BUG=chromium:648973,chromium:648568 Review-Url: https://codereview.chromium.org/2360233002 Cr-Commit-Position: refs/heads/master@{#39624}
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- 21 Sep, 2016 3 commits
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adamk authored
Revert of [heap] Concurrently free empty typed slot set chunks. (patchset #3 id:40001 of https://codereview.chromium.org/2352423002/ ) Reason for revert: TSAN failures on Linux64: https://build.chromium.org/p/client.v8/builders/V8%20Linux64%20TSAN/builds/11850 Also saw various threading-related flakiness on multiple bots. Original issue's description: > [heap] Concurrently free empty typed slot set chunks. > > BUG=chromium:648568 > > Committed: https://crrev.com/ff8101d8e8d5e14dfa89de1252c510e6a0775539 > Cr-Commit-Position: refs/heads/master@{#39605} TBR=ulan@chromium.org,hpayer@chromium.org # Skipping CQ checks because original CL landed less than 1 days ago. NOPRESUBMIT=true NOTREECHECKS=true NOTRY=true BUG=chromium:648568 Review-Url: https://codereview.chromium.org/2358333002 Cr-Commit-Position: refs/heads/master@{#39607}
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hpayer authored
BUG=chromium:648568 Review-Url: https://codereview.chromium.org/2352423002 Cr-Commit-Position: refs/heads/master@{#39605}
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hpayer authored
BUG=chromium:648568 Review-Url: https://codereview.chromium.org/2360513002 Cr-Commit-Position: refs/heads/master@{#39596}
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- 20 Sep, 2016 1 commit
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hpayer authored
Here we only change the type of the slot set fields to atomic values and use CAS to change the state. There is no change in behavior or semantics of the slot set. BUG=chromium:648568 Review-Url: https://codereview.chromium.org/2353553003 Cr-Commit-Position: refs/heads/master@{#39557}
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- 18 Aug, 2016 1 commit
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bjaideep authored
V8 doesn't build on Ubuntu 16.04 (with GCC 5.3). Seems to be a known regression on newer GCC version. It emits incorrect "error: array subscript is above array bounds" message. Adding explicit array bound check fixes the issue. R=hablich@chromium.org BUG= Review-Url: https://codereview.chromium.org/2256113002 Cr-Commit-Position: refs/heads/master@{#38721}
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