verwaest@chromium.org
2b574ef580
Promoting elements transitions to their own field.
...
This is a first step towards separating all transitions from the property descriptions. If we link the property descriptions from the transition object, this will in allow the descriptor array (property descriptions) to become immutable.
Review URL: https://chromiumcodereview.appspot.com/10444055
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11750 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-06-11 06:59:56 +00:00
verwaest@chromium.org
98c37e1f4c
Merging ContentArray into DescriptorArray
...
Review URL: https://chromiumcodereview.appspot.com/10412030
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11703 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-06-04 07:20:11 +00:00
verwaest@chromium.org
75f35d3fe1
Decoupling MarkDescriptorArray as much as possible from the ContentArray.
...
Review URL: https://chromiumcodereview.appspot.com/10417030
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11683 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-05-30 15:15:17 +00:00
mstarzinger@chromium.org
f17833b6ec
Fix presubmit error in r11630.
...
TBR=erik.corry@gmail.com
Review URL: https://chromiumcodereview.appspot.com/10409091
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11632 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-05-23 11:40:38 +00:00
mstarzinger@chromium.org
7412d9adbe
Change sentinel value for zapping of old-to-new pointers.
...
R=erik.corry@gmail.com
BUG=v8:2143
Review URL: https://chromiumcodereview.appspot.com/10411089
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11630 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-05-23 11:17:22 +00:00
mstarzinger@chromium.org
f9b93e6cc7
Implement map collection for incremental marking.
...
This causes map transitions to be treated weakly during incremental
marking and hence allows clearing of non-live transitions. The marking
code is now shared between incremental and non-incremental mode.
R=vegorov@chromium.org
BUG=v8:1465
TEST=cctest/test-heap/Regress1465
Review URL: https://chromiumcodereview.appspot.com/10310168
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11577 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-05-16 10:07:50 +00:00
mstarzinger@chromium.org
88a9350f14
Revert r11556 and r11558 to allow roll.
...
R=yangguo@chromium.org
Review URL: https://chromiumcodereview.appspot.com/10383182
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11564 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-05-15 12:01:23 +00:00
mstarzinger@chromium.org
0c54a2371c
Implement map collection for incremental marking.
...
This causes map transitions to be treated weakly during incremental
marking and hence allows clearing of non-live transitions. The marking
code is now shared between incremental and non-incremental mode.
R=vegorov@chromium.org
BUG=v8:1465
TEST=cctest/test-heap/Regress1465
Review URL: https://chromiumcodereview.appspot.com/10386046
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11556 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-05-15 08:39:25 +00:00
mstarzinger@chromium.org
526b3f2cac
Implement explicit back pointers in transition tree.
...
This makes back pointers in the map transition tree explicit by having
accurate back pointers throughout the lifetime of maps instead of
establishing and destroying back pointers before and after each marking
phase. This is a prerequisite for being able to clear map transitions
during incremental marking.
R=vegorov@chromium.org
BUG=v8:1465
Review URL: https://chromiumcodereview.appspot.com/10381053
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11528 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-05-09 07:29:18 +00:00
ulan@chromium.org
ae0a7ec93a
Use correct size of promoted space for setting promotion and allocation limits.
...
Review URL: https://chromiumcodereview.appspot.com/10376008
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11513 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-05-04 09:36:46 +00:00
mstarzinger@chromium.org
11d24334fc
Implement ClearFunctionTypeFeedback for test cases.
...
R=danno@chromium.org
TEST=mjsunit/compiler/inline-construct
Review URL: https://chromiumcodereview.appspot.com/10332010
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11509 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-05-04 09:16:38 +00:00
erik.corry@gmail.com
bd3c2c028f
Enable code flushing even when objects were marked incrementally,
...
since the incremental visitor is setting the gc_age fields correctly.
This means the ResetSharedFunctionInfoCountersDuringIncrementalMarking
test passes even if it hits a marking stack overflow.
Review URL: https://chromiumcodereview.appspot.com/10258001
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11481 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-05-02 12:58:40 +00:00
svenpanne@chromium.org
a0d67fd9b0
Flush PC-to-code cache before doing verification.
...
Review URL: https://chromiumcodereview.appspot.com/10144002
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11395 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-04-20 09:37:06 +00:00
mstarzinger@chromium.org
7d22d73ebf
Fix issues when stressing compaction with WeakMaps.
...
1) While marking the backing hash table of a WeakMap we also need to
record the slot because it might be on an evacuation candidate.
2) With incremental marking one backing hash table might be marked more
than once because the WeakMap might have gone through a white to gray
transition.
3) The corner case when the allocation of the backing hash table itself
causes a GC, leads to a WeakMap with an undefined table field, so we
still need to handle this case correctly.
R=vegorov@chromium.org
TEST=mjsunit/harmony/proxies-example-membrane --stress-compaction
Review URL: https://chromiumcodereview.appspot.com/9985010
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11385 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-04-19 10:32:38 +00:00
vegorov@chromium.org
870eba4c65
Process weak references between optimized JSFunctions on scavenges.
...
R=mstarzinger@chromium.org
Review URL: https://chromiumcodereview.appspot.com/10091027
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11347 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-04-17 10:37:41 +00:00
mstarzinger@chromium.org
6276295e28
Fix WeakMap processing for evacuation candidates (2).
...
This fixes processing of WeakMaps so that keys on evacuation candidates
which are also reachable by other strong paths are correctly recorded in
the slots buffer.
Also backing stores that reside in the large-object-space now use the
correct anchor slot.
R=vegorov@chromium.org
BUG=v8:2060
TEST=cctest/test-weakmaps/Regress2060b
Review URL: https://chromiumcodereview.appspot.com/10034018
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11279 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-04-11 15:32:31 +00:00
mstarzinger@chromium.org
00d9c14729
Fix WeakMap processing for evacuation candidates.
...
This fixes processing of WeakMaps so that value entries on an evacuation
candidate are correctly recorded in the slots buffer. We didn't pass the
correct slot into the backing hashtable while visiting values.
Also the live bytes counter for large object space pages was not reset
correctly when incremental marking is aborted.
R=vegorov@chromium.org
BUG=v8:2060
TEST=cctest/test-weakmaps/Regress2060
Review URL: https://chromiumcodereview.appspot.com/10034010
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11264 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-04-11 09:14:29 +00:00
ulan@chromium.org
59b06fd638
Reset function info counters after context disposal.
...
R=jkummerow@chromium.org
BUG=117767,V8:1902
Review URL: https://chromiumcodereview.appspot.com/9836091
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11143 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-03-26 13:08:08 +00:00
ulan@chromium.org
0b6a617779
Age inline caches after context disposal.
...
Review URL: https://chromiumcodereview.appspot.com/9837005
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11122 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-03-23 13:33:11 +00:00
erik.corry@gmail.com
e3774cf23f
Record the addresses of pages that are unmapped to aid
...
in post mortem crash dump analysis.
Review URL: https://chromiumcodereview.appspot.com/9700061
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11071 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-03-16 14:13:22 +00:00
mstarzinger@chromium.org
cd91894d2f
Fix missing initialization of mark-compact flags.
...
R=svenpanne@chromium.org
Review URL: https://chromiumcodereview.appspot.com/9662056
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11006 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-03-12 12:17:46 +00:00
mstarzinger@chromium.org
4b4b3a4da7
Add kAbortIncrementalMarkingMask flag for GC.
...
This adds an additional flag to control whether incremental marking
should be aborted when requesting a GC, providing a finer granularity
between kNoGCFlags and kMakeHeapIterableMask.
R=ulan@chromium.org
BUG=v8:1608
Review URL: https://chromiumcodereview.appspot.com/9608006
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10961 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-03-07 17:52:16 +00:00
vegorov@chromium.org
fbc230e42b
Ensure that executable pages are properly guarded.
...
Split executable memory chunks into two pieces: header with all metadata (protection: RW) and body (protection: RWX). Separate header from metadata with a guard page and add a guard page after the page body.
R=erik.corry@gmail.com
BUG=http://crbug.com/115151
Review URL: https://chromiumcodereview.appspot.com/9452002
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10809 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-02-23 12:11:24 +00:00
jkummerow@chromium.org
0177aa62da
Count ICs that have type information.
...
Hidden behind --type-info-threshold=X flag, usage dependent on experimental profiler.
Review URL: https://chromiumcodereview.appspot.com/9403009
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10753 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-02-20 12:57:23 +00:00
jkummerow@chromium.org
de510c3a58
Split experimental profiler flags
...
Review URL: https://chromiumcodereview.appspot.com/9374015
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10660 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-02-09 13:30:01 +00:00
jkummerow@chromium.org
aa2e842134
Count-based profiling for primitive functions (hidden behind a flag)
...
Review URL: https://chromiumcodereview.appspot.com/9361026
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10657 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-02-09 10:19:46 +00:00
vegorov@chromium.org
96baf602df
Ensure that regexp code flushing correctly updates slots buffer.
...
Enable code compaction again.
R=erik.corry@gmail.com
Review URL: https://chromiumcodereview.appspot.com/9365019
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10647 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-02-08 15:44:07 +00:00
vegorov@chromium.org
99fa8059c3
Try enabling (non-incremental) code compaction again.
...
This time include slot-recording fixes in code flushing that were accidentally omitted from the previous commit.
R=mstarzinger@chromium.org
Review URL: https://chromiumcodereview.appspot.com/9348018
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10625 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-02-07 14:43:51 +00:00
vegorov@chromium.org
9920e441fa
Disable code compaction again while we investigate buildbot check failures.
...
Review URL: https://chromiumcodereview.appspot.com/9351013
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10619 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-02-07 10:03:08 +00:00
vegorov@chromium.org
029aa9ef92
Enable non-incremental code compaction.
...
It is intended to bring memory usage down on idle notifications.
R=erik.corry@gmail.com
BUG=v8:1726
Review URL: https://chromiumcodereview.appspot.com/9323079
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10616 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-02-07 08:51:47 +00:00
vegorov@chromium.org
405b875fec
Fix compilation failure introduced by r10601.
...
Cast intptr_t to int in PrintFs.
TBR=erik.corry@gmail.com
Review URL: https://chromiumcodereview.appspot.com/9325028
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10602 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-02-03 14:30:48 +00:00
vegorov@chromium.org
a7b0481b6d
Tweak compaction candidate selection to avoid keeping page with low occupancy around.
...
Increase slots buffer chain length to 15 to make compaction more aggressive and usefull.
Pass gc and collector selection reasons to GCTracer to allow more meaningull --gc-trace.
Print fragmentation of spaces that we do not compact.
R=erik.corry@gmail.com
Review URL: https://chromiumcodereview.appspot.com/9323007
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10601 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-02-03 14:16:40 +00:00
erik.corry@gmail.com
3cfac4da0a
Revert memory saving change due to failures on multithreaded tests
...
on Windows.
Review URL: https://chromiumcodereview.appspot.com/9104039
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10569 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-01-31 13:33:44 +00:00
erik.corry@gmail.com
f5feac9e98
Reduce memory use immediately after boot.
...
This is a recommit of https://chromiumcodereview.appspot.com/9289047
with changes noted in comments in the codereview tool.
Review URL: https://chromiumcodereview.appspot.com/9233050
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10562 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-01-31 11:22:35 +00:00
erik.corry@gmail.com
a9428d2bcc
Revert 10542 (boot time memory reduction) due to map alignment
...
issues on 64 bit.
Review URL: https://chromiumcodereview.appspot.com/9295047
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10544 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-01-30 10:20:13 +00:00
erik.corry@gmail.com
419ea5fcc3
Reduce boot-up memory use of V8.
...
This is a recommit of http://codereview.chromium.org/9179012
after fixing what turned out to be unrelated out-of-memory
errors.
That was a rebase of http://codereview.chromium.org/9017009/
Review URL: https://chromiumcodereview.appspot.com/9289047
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10542 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-01-30 09:15:34 +00:00
mstarzinger@chromium.org
8c12b6b743
Implement target cache for constructor calls.
...
This caches call targets of constructor calls by associating one element
caches with call sites. The type feedback oracle can use the recorded
valued to gather type information for monomorphic constructor call sites.
R=kmillikin@chromium.org ,vegorov@chromium.org
Review URL: https://chromiumcodereview.appspot.com/8932004
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10531 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-01-27 13:03:19 +00:00
svenpanne@chromium.org
a538072a08
By popular demand: Slightly more honest typing in ClearNonLiveMapTransitions
...
Review URL: https://chromiumcodereview.appspot.com/9290049
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10526 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-01-27 09:34:05 +00:00
vegorov@chromium.org
67d72eab45
When preparing heap for breakpoints make sure not to flush away non-optimized code for inlined functions.
...
Debug::PrepareForBreakPoints was not fully populating active_functions list.
R=erik.corry@gmail.com
TEST=test/mjsunit/regress/regress-debug-code-recompilation.js
Review URL: https://chromiumcodereview.appspot.com/9290013
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10503 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-01-25 15:11:59 +00:00
svenpanne@chromium.org
7719981078
Refactoring only: Extracted 2 methods from ClearNonLiveTransitions
...
This simple refactoring makes it very clear that clearing non-live transitions
actually consists of 2 quite separate things. Things would even be nicer if the
prototype transitions were represented by a separate data structure instead of
reusing FixedArray in an interesting way once again.
As an additional bonus, this CL makes it possible to read each of the methods in
question on a 30" screen without scrolling!
Review URL: https://chromiumcodereview.appspot.com/9169045
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10501 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-01-25 14:22:59 +00:00
svenpanne@chromium.org
6859247172
Do not follow accessor map transitions when marking descriptor arrays.
...
Note that we currently have no such transitions, but we will in the future, and
we have to avoid keeping maps live too long.
Review URL: https://chromiumcodereview.appspot.com/9212045
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10495 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-01-25 08:50:55 +00:00
mstarzinger@chromium.org
dffb78e312
Fix missing write-barrier for prototype transitions.
...
R=vegorov@chromium.org
Review URL: https://chromiumcodereview.appspot.com/9150041
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10451 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-01-19 18:50:01 +00:00
mstarzinger@chromium.org
77f6a6fc31
Fix prototype transition clearing during full GC.
...
R=vegorov@chromium.org
Review URL: https://chromiumcodereview.appspot.com/9195008
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10439 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-01-19 13:38:37 +00:00
erik.corry@gmail.com
504ef4f243
Robustify the clearing of the cache of map-related ICs on the map.
...
Review URL: https://chromiumcodereview.appspot.com/9159009
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10438 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-01-19 13:22:16 +00:00
jkummerow@chromium.org
3a4bed8a7e
Only clear monomorphic ICs on GC after Context exit
...
Review URL: https://chromiumcodereview.appspot.com/9255014
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10431 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-01-18 16:16:11 +00:00
vegorov@chromium.org
3fd6ba109e
When adjusting page's live bytes counter from the mutator adjust owners unswept free bytes counter.
...
R=mstarzinger@chromium.org
BUG=
TEST=
Review URL: https://chromiumcodereview.appspot.com/9178021
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10426 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-01-18 09:21:07 +00:00
mstarzinger@chromium.org
f3045d3802
Fix corner-case in heap size estimation.
...
Empty but unswept pages could cause the unswept_free_bytes counter to
to be off in case heap gets shrunk and page gets released before it was
swept properly.
R=vegorov@chromium.org
BUG=v8:1893
Review URL: https://chromiumcodereview.appspot.com/9241010
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10421 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-01-17 14:09:12 +00:00
erik.corry@gmail.com
a02dbe4258
Revert 10413-10416 initial memory use reduction due to
...
test failures.
Review URL: http://codereview.chromium.org/9178014
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10417 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-01-17 13:13:55 +00:00
erik.corry@gmail.com
3403e76682
Reduce boot-up memory use of V8.
...
Reduce signal sender thread stack size to 32k.
Commit partial old-space pages to reduce minimum memory use.
This is a rebase of http://codereview.chromium.org/9017009/
Review URL: http://codereview.chromium.org/9179012
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10413 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-01-17 11:38:25 +00:00
erik.corry@gmail.com
70da367f6b
More spelling changes.
...
Review URL: http://codereview.chromium.org/9231009
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10407 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-01-16 12:38:59 +00:00