hpayer@chromium.org
80382cdb9f
Presweep one page before parallel/concurrent sweeping.
...
BUG=
Review URL: https://codereview.chromium.org/12444003
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13832 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-03-05 17:51:49 +00:00
hpayer@chromium.org
80195113ab
Wait for sweeper threads in EnsureSweeperProgress() only if the main thread finished its sweeping phase.
...
BUG=
Review URL: https://codereview.chromium.org/12462002
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13830 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-03-05 17:32:02 +00:00
mstarzinger@chromium.org
24abac9f02
Remove obsolete CodeFlusher debug code.
...
R=hpayer@chromium.org
Review URL: https://codereview.chromium.org/12456002
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13826 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-03-05 16:08:11 +00:00
hpayer@chromium.org
74a25d8e17
Wait for sweeper threads and finalize sweeping only if parallel/concurrent sweeping was in progress.
...
BUG=
Review URL: https://codereview.chromium.org/12386084
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13810 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-03-04 14:56:20 +00:00
rossberg@chromium.org
55f93b5532
Renamed "symbols" to "internalized strings" throughout the code base,
...
in preparation of the introduction of ES6 'symbols' (aka private/unique names).
The SymbolTable became the StringTable. I also made sure to adapt all comments. The only remaining use of the term "symbol" (other than unrelated uses in the parser and such) is now 'NewSymbol' in the API and the 'V8.KeyedLoadGenericSymbol' counter, changing which might break embedders.
The one functional change in this CL is that I removed the former 'empty_string' constant, since it is redundant given the 'empty_symbol' constant that we also had (and both were used inconsistently).
R=yangguo@chromium.org
BUG=
Review URL: https://codereview.chromium.org/12210083
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13781 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-02-28 17:03:34 +00:00
hpayer@chromium.org
a9374e2fea
Set unswept free bytes for concurent sweeper.
...
BUG=
Review URL: https://codereview.chromium.org/12184016
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13776 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-02-28 15:07:28 +00:00
svenpanne@chromium.org
54b4b1ecc2
Forced inlining of some GC-related methods.
...
The selection of methods were driven by GCC's -Winline plus some benchmarking.
On ia32, the additional amount of code is roughly 63kB (= 0.07% of Chrome ;-).
BUG=v8:1607
Review URL: https://codereview.chromium.org/12338002
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13710 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-02-21 14:02:52 +00:00
hpayer@chromium.org
ab3114df68
Release evacuation candidates after parallel sweeper threads completed.
...
BUG=
Review URL: https://codereview.chromium.org/12082101
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13708 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-02-21 13:12:12 +00:00
ulan@chromium.org
3a1eca4242
Remove prototype checks for leaf maps in optimized code.
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Review URL: https://chromiumcodereview.appspot.com/12225099
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13697 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-02-20 11:49:54 +00:00
hpayer@chromium.org
37d88cca4e
Move sweeping pending status field of concurrent sweepers to MarkCompactCollector.
...
BUG=
Review URL: https://codereview.chromium.org/12261011
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13661 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-02-13 15:21:08 +00:00
hpayer@chromium.org
b9af1ef185
Reduces memory consumption for parallel sweeping.
...
BUG=
Review URL: https://codereview.chromium.org/12177011
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13652 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-02-13 12:46:06 +00:00
hpayer@chromium.org
5f1a4e3fa1
Fix verify heap problem when parallel sweeping is enabled.
...
BUG=
Review URL: https://codereview.chromium.org/12260004
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13651 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-02-13 11:02:39 +00:00
dcarney@chromium.org
0da6e525b7
Split AccessorInfo into DeclaredAccessorInfo and ExecutableAccessorInfo
...
R=svenpanne@chromium.org
BUG=
Review URL: https://codereview.chromium.org/12213012
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13649 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-02-12 14:33:08 +00:00
mstarzinger@chromium.org
9bb68394a0
Fix code flusher disabling while marking incrementally.
...
This fixes a corner case where the code flusher is disabled while the
incremental marker is still running. This can happen when the debugger
is loaded and a scavenge is triggered. Make sure that all flushing
decisions are revisited after the candidates lists are evicted.
R=hpayer@chromium.org
BUG=chromium:173458,chromium:168582
TEST=cctest/test-heap/Regress173458
Review URL: https://codereview.chromium.org/12217108
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13641 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-02-11 15:11:00 +00:00
svenpanne@chromium.org
7b45ab9501
Don't use TLS for space iterators.
...
This is not only inherently slow, but it also forces the caller to enter an
Isolate before. Both is bad, so we have to do some heap plumbing.
BUG=v8:2531
Review URL: https://codereview.chromium.org/12217106
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13638 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-02-11 13:02:20 +00:00
hpayer@chromium.org
492396f2ab
Fixed IsSweepingComplete and EnsureSweeperProgress helper functions.
...
BUG=
Review URL: https://codereview.chromium.org/12177017
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13596 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-02-05 15:48:59 +00:00
ulan@chromium.org
744d61ebe7
Fix clearing of dead dependent codes and verify weak embedded maps on full GC.
...
BUG=172488,172489
R=mstarzinger@chromium.org
Review URL: https://chromiumcodereview.appspot.com/12094036
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13584 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-02-04 10:56:50 +00:00
hpayer@chromium.org
7fe9f3b05c
Added parallel marking threads.
...
BUG=
Review URL: https://codereview.chromium.org/12047044
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13569 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-01-31 14:23:36 +00:00
hpayer@chromium.org
0068ee59ce
Fix build bot. Force instantiation of templatized SweepConservatively method.
...
BUG=
Review URL: https://codereview.chromium.org/12079075
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13554 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-01-30 13:13:04 +00:00
hpayer@chromium.org
117cedbbf2
Fixes Windows build bots.
...
BUG=
Review URL: https://codereview.chromium.org/12094057
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13553 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-01-30 12:47:41 +00:00
hpayer@chromium.org
44caabb1cd
Parallel and concurrent sweeping.
...
Sweep old pointer space and old data space concurrently to the main mutator thread and in parallel.
BUG=
Review URL: https://codereview.chromium.org/11782028
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13552 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-01-30 12:19:32 +00:00
hpayer@chromium.org
c027397c9d
Precisely measure duration of mark and sweep phases. Changed print_cumulative_gc_stat flag to only print GC statistics at end of program.
...
BUG=
Review URL: https://codereview.chromium.org/11595006
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13551 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-01-30 10:51:13 +00:00
ulan@chromium.org
fe0582c262
Put making embedded maps in optimized code weak behind a flag.
...
Disable the flag by default because of Chrome crashes.
BUG=172488,172489
R=mstarzinger@chromium.org
Review URL: https://chromiumcodereview.appspot.com/12091018
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13523 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-01-28 10:25:38 +00:00
ulan@chromium.org
e6224d275f
Make embedded maps in optimized code weak.
...
Each map has a weak array of dependent codes, where the map tracks all the optimized codes that embed it.
Old space GC either clears the dead dependent codes from the array if the corresponding map is alive or deoptimizes the live dependent codes if the map is dead.
BUG=v8:2073
R=mstarzinger@chromium.org
Review URL: https://chromiumcodereview.appspot.com/11575007
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13490 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-01-24 11:55:05 +00:00
mstarzinger@chromium.org
cd21056819
Fix corner case when JSFunction is evicted from flusher.
...
This fixes a corner case that happens when JSFunctions are enqueued as
code flushing candidates but their respective SharedFunctionInfo isn't.
If the JSFunction gets evicted due to optimization the code slot in the
SharedFunctionInfo will never be recorded in the slots buffer.
R=hpayer@chromium.org
BUG=chromium:168801
TEST=cctest/test-heap/Regress168801
Review URL: https://codereview.chromium.org/11896064
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13481 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-01-23 16:15:15 +00:00
yangguo@chromium.org
5da9e75670
Remove support for Live Object List and inspector module.
...
These were introduced in r7012 and r6379.
The reason for this is that both features are not being maintained.
They have been out-of-date for a while. Test cases do not exist.
R=mstarzinger@chromium.org
BUG=
Review URL: https://chromiumcodereview.appspot.com/11975012
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13404 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-01-16 15:44:26 +00:00
mstarzinger@chromium.org
90ec61152c
Add sanity check to CodeFlusher::AddCandidate.
...
R=hpayer@chromium.org
BUG=chromium:169209
Review URL: https://codereview.chromium.org/11887031
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13380 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-01-15 10:00:48 +00:00
yangguo@chromium.org
eadcc1c10c
Reland r13188, r13194, r13256 (Deferred formatting of error stack trace during GC).
...
BUG=
Review URL: https://chromiumcodereview.appspot.com/11880018
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13371 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-01-14 13:19:27 +00:00
mstarzinger@chromium.org
b93b2b98b8
Fix shared function info code replacement.
...
This fixes a corner case when the unoptimized code for a shared function
info is replaced while the function is enqueued as a flushing candidate.
Since the link field is stored within the code object, the candidates
list got destroyed.
R=hpayer@chromium.org
BUG=v8:169209
TEST=cctest/test-heap/Regress169209
Review URL: https://codereview.chromium.org/11818052
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13361 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-01-11 13:13:11 +00:00
yangguo@chromium.org
61f4012989
Use C++ style type casts.
...
R=mstarzinger@chromium.org
BUG=
Review URL: https://chromiumcodereview.appspot.com/11644097
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13326 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-01-07 15:02:56 +00:00
yangguo@chromium.org
2f821f1ed9
Revert r13188, r13194, r13256 (Deferred formatting of error stack trace during GC).
...
R=ulan@chromium.org
BUG=
Review URL: https://chromiumcodereview.appspot.com/11678006
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13279 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-12-27 13:12:27 +00:00
yangguo@chromium.org
72dfb27909
Fire 'stack' getter of error objects after GC.
...
BUG=v8:2340
Review URL: https://chromiumcodereview.appspot.com/11377158
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13188 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-12-11 10:14:01 +00:00
mstarzinger@chromium.org
31f1f2de22
Fix candidate eviction in code flusher.
...
This fixes a corner case where a code flushing candidate was evicted
from the candidate list without being revisited by the incremental
marker. An explicit write-barrier makes sure it gets revisited.
R=ulan@chromium.org
BUG=chromium:159140
TEST=cctest/test-heap/Regress159140
Review URL: https://codereview.chromium.org/11451038
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13153 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-12-06 16:27:32 +00:00
mstarzinger@chromium.org
a4c4862ed8
Unify object groups iteration in global handles.
...
This unifies the iteration logic of objects groups iteration in global
handles. The scavenger as well as mark-and-compact now rely on the same
underlying logic.
R=ulan@chromium.org
Review URL: https://codereview.chromium.org/11299248
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13128 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-12-04 10:23:43 +00:00
hpayer@chromium.org
395db15950
Remove eager sweeping for lazy swept spaces. Try to find in SlowAllocateRaw a bounded number of times a big enough memory slot.
...
BUG=v8:2194
Review URL: https://codereview.chromium.org/11420036
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13058 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-11-26 14:50:20 +00:00
mstarzinger@chromium.org
5dec1423a4
Implement progress bar for large objects.
...
This implements incremental scanning of large objects using a progress
bar in the page header of such objects. Note that this requires forward
white to gray transitions in the write barrier and hence is disabled by
default for now.
R=ulan@chromium.org ,hpayer@chromium.org
Review URL: https://codereview.chromium.org/11362246
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12978 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-11-15 17:57:40 +00:00
danno@chromium.org
bd4e114b8e
Add code again to allow reclaiming old unexecuted functions.
...
When code objects in the heap for FUNCTIONs and OPTIMIZED_FUNCTIONs are marked by the GC, their prologue is patched with a call to a stub that removes the patch. This allows the collector to quickly identify code objects that haven't been executed since the last full collection (they are the ones that sill contain the patch). The functionality is currently disabled, but can be activated by specifying the "--age-code".
R=mstarzinger@chromium.org
Review URL: https://codereview.chromium.org/10837037
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12898 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-11-08 12:18:11 +00:00
mstarzinger@chromium.org
8e7ae24b40
Fix disabling of code flusher while marking.
...
This fixes a corner case when the code flusher is disabled while
incremental marking is running. The list of candidates needs to be
evicted to prevent list fragments without a head floating around.
R=ulan@chromium.org
BUG=chromium:159140
Review URL: https://codereview.chromium.org/11366136
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12894 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-11-08 10:26:50 +00:00
mstarzinger@chromium.org
03ba764f3e
Put incremental code flushing behind a flag.
...
This is used to disable incremental code flushing by default for now
until we can stabilize it and make it ready for production.
R=verwaest@chromium.org
BUG=chromium:159140
Review URL: https://codereview.chromium.org/11367105
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12862 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-11-06 11:54:05 +00:00
mstarzinger@chromium.org
014f00fa51
Fix code flusher to process weak function links.
...
This fixes a corner case where weak function links of the code flushing
candidates list were destroyed by scavenges that happened during
incremental marking. Now those weak function links are updated while
scavenging happens.
R=ulan@chromium.org
TEST=cctest/test-heap/TestCodeFlushingIncrementalScavenge
Review URL: https://codereview.chromium.org/11271006
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12825 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-10-26 09:44:34 +00:00
mstarzinger@chromium.org
cee59bf522
Enable incremental code flushing.
...
This enables code flushing even with incremental marking enabled and
fully shares the function link field in JSFunctions between candidates
for code flushing and the optimized functions list. If a candidate for
code flushing gets optimized, it will be evicted from the candidates
list.
R=ulan@chromium.org
BUG=v8:1609
Review URL: https://codereview.chromium.org/11140025
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12796 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-10-23 08:25:04 +00:00
danno@chromium.org
43e248d2e5
Use movw/movt instead of constant pool on ARMv7.
...
Some ARM architectures load 32-bit immediate constants more efficiently using movw/movt pairs rather than constant pool loads. This patch allows the assembler to generate one or the other load form at runtime depending on what is faster.
R=ulan@chromium.org
Review URL: https://codereview.chromium.org/11037023
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12755 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-10-18 12:21:42 +00:00
danno@chromium.org
9d43ff71b8
Avoid unnecessary code target changes during code compaction.
...
R=ulan@chromium.org
Review URL: https://codereview.chromium.org/11198032
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12754 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-10-18 12:01:36 +00:00
mstarzinger@chromium.org
d9e3d35c07
Switch code flushing to use different JSFunction field.
...
This is another preparation for incremental code flushing. Instead of
linking candidates using the code entry field, we use the next pointer
that is also used to link optimized functions together. Since we only
support flushing of unoptimized code, this field can be shared.
R=ulan@chromium.org
BUG=v8:1609
Review URL: https://codereview.chromium.org/11141023
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12734 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-10-15 14:43:57 +00:00
mstarzinger@chromium.org
3d0d211764
Ensure code flushing is disabled in incremental marking.
...
This fixes some test failures since r12714 which shared the code for
code flushing between full and incremental marking and is only a quick
fix until we can enable incremental code flushing.
R=jkummerow@chromium.org
BUG=v8:1609
Review URL: https://codereview.chromium.org/11137014
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12723 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-10-15 09:25:30 +00:00
mstarzinger@chromium.org
bf85da7441
Move code flushing support into shared visitor.
...
This is a first step towards incremental code flushing. The code
flushing support is now shared between full and incremental marking.
The code flusher itself is not yet activated in incremental mode and
will require some additional adaptations.
R=ulan@chromium.org
BUG=v8:1609
Review URL: https://codereview.chromium.org/11028016
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12714 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-10-12 12:41:29 +00:00
mvstanton@chromium.org
b3c0ed8245
Enable --verify-heap in release mode
...
R=mstarzinger@chromium.org
BUG=v8:2120
Review URL: https://codereview.chromium.org/11118018
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12713 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-10-12 11:41:14 +00:00
mstarzinger@chromium.org
4887285da4
Make GDBJIT interface compile again.
...
R=ulan@chromium.org
BUG=v8:1804
Review URL: https://codereview.chromium.org/11022007
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12679 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-10-09 08:24:58 +00:00
verwaest@chromium.org
6e1bafc808
Revert "Allow partial scanning of large arrays in order to avoid"
...
This reverts commit r12619.
BUG=
Review URL: https://chromiumcodereview.appspot.com/11029023
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12660 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-10-04 11:09:17 +00:00
mstarzinger@chromium.org
739c9f6f01
Fix slot recording of code target patches.
...
This makes sure that we only record relocation slots for code target
patches that happen in marked objects. Unmarked ones might be visited
again, whereas marked ones are alive and will not be visited again.
R=ulan@chromium.org
BUG=chromium:152615,chromium:144230
Review URL: https://codereview.chromium.org/11040021
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12655 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-10-02 15:46:55 +00:00