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490 Commits

Author SHA1 Message Date
ulan@chromium.org
27fb8c2cf6 Flush monomorphic ICs on context disposal instead of context exit. 
R=mstarzinger@chromium.org

Review URL: https://chromiumcodereview.appspot.com/10836189

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12342 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-08-20 12:09:03 +00:00
rossberg@chromium.org
984d0b0925 Rename Context::global to Context::global_object, 
in preparation for global lexical scope.

R=mstarzinger@chromium.org
BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/10832365

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12335 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-08-17 12:59:00 +00:00
rossberg@chromium.org
42552808ab Rename "global context" to "native context", 
in anticipation of the upcoming lexical global scope.

Mostly automatised as:

for FILE in `egrep -ril "global[ _]?context" src test/cctest`
do
  echo $FILE
  sed "s/Global context/Native context/g" <$FILE >$FILE.0
  sed "s/global context/native context/g" <$FILE.0 >$FILE.1
  sed "s/global_context/native_context/g" <$FILE.1 >$FILE.2
  sed "s/GLOBAL_CONTEXT/NATIVE_CONTEXT/g" <$FILE.2 >$FILE.3
  sed "s/GlobalContext/NativeContext/g" <$FILE.3 >$FILE
  rm $FILE.[0-9]
done

R=mstarzinger@chromium.org
BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/10832342

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12325 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-08-17 09:03:08 +00:00
mstarzinger@chromium.org
182b0bfb87 Factor out SimulateIncrementalMarking in test-heap. 
R=ulan@chromium.org
TEST=cctest/test-heap

Review URL: https://chromiumcodereview.appspot.com/10824178

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12260 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-08-06 11:04:40 +00:00
mstarzinger@chromium.org
81a43b5607 Make incremental marking clear ICs. 
This extends the existing clearing of ICs during GC to incremental
marking in order to prevent cross-context retention that would last
until the next non-incremental GC.

R=erik.corry@gmail.com
TEST=cctest/test-heap/IncrementalMarkingClears[Mono,Poly]morhpicIC

Review URL: https://chromiumcodereview.appspot.com/10831123

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12259 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-08-06 10:35:48 +00:00
mstarzinger@chromium.org
680c4a7a13 Make test-heap resilient against --stress-compaction. 
R=ulan@chromium.org

Review URL: https://chromiumcodereview.appspot.com/10843052

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12251 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-08-02 14:20:38 +00:00
mstarzinger@chromium.org
7dd2e9777c Make incremental marking clear type feedback cells. 
This extends the existing clearing of type feedback cells during GC to
incremental marking in order to prevent cross-context retention that
would last until the next non-incremental GC.

R=erik.corry@gmail.com
TEST=cctest/test-heap/IncrementalMarkingClearsTypeFeedbackCells

Review URL: https://chromiumcodereview.appspot.com/10823082

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12245 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-08-01 11:24:14 +00:00
erik.corry@gmail.com
1d0f872ef9 Fix full code generator to not use --debug-code if it is in 
mksnapshot or a VM that is booted from a snapshot.  --debug-code
can still have an effect on stub and optimized code and it still
works on the full code generator when running without snapshots.

The deoptimizer generates full-code-generator code and relies on it having
the same layout as last time.  This means that the code the full code
generator makes for the snapshot should be the same as the code it makes
later.  This change makes the full code generator create more consistent
code between mksnapshot time and run time.

This is a bug fix and a step towards making the snapshot code more robust.
Review URL: https://chromiumcodereview.appspot.com/10834085

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12239 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-07-31 14:59:32 +00:00
yangguo@chromium.org
1094c8f17c Fix regression test on x64. 
R=verwaest@chromium.org
BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/10827084

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12231 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-07-30 13:48:52 +00:00
yangguo@chromium.org
514fc74a47 Limit initial size of hidden properties and store identity hashes inline. 
BUG=v8:2211
TEST=test-heap/Regress2211

Review URL: https://chromiumcodereview.appspot.com/10827040

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12230 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-07-30 13:09:09 +00:00
mstarzinger@chromium.org
249f29f22b Make AlwaysAllocateScope imply DisallowAllocationFailure. 
R=erik.corry@gmail.com
TEST=cctest/test-api,cctest/test-heap (--gc-interval=100)

Review URL: https://chromiumcodereview.appspot.com/10824082

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12229 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-07-30 13:07:29 +00:00
yangguo@chromium.org
b58cfd485e Avoid GC when printing shared function info. 
R=mstarzinger@chromium.org
BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/10828048

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12210 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-07-27 09:54:56 +00:00
yangguo@chromium.org
d340db9135 Insert missing write barrier in sliced string allocation. 
BUG=v8:2237
TEST=test-heap/Regress2237

Review URL: https://chromiumcodereview.appspot.com/10781033

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12127 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-07-18 13:39:53 +00:00
yangguo@chromium.org
8ce1ebb5cf Do not enter the debugger when debugger is not active. 
R=mstarzinger@chromium.org
BUG=
TEST=test-debug/DebuggerCreatesContextIffActive

Review URL: https://chromiumcodereview.appspot.com/10702166

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12059 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-07-12 11:31:52 +00:00
verwaest@chromium.org
75407ae2b7 Moving prototype transitions into the header of the transition array. 
Review URL: https://chromiumcodereview.appspot.com/10692026

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12022 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-07-10 07:53:00 +00:00
verwaest@chromium.org
d7a5b7d5e2 Separating transitions from descriptors. 
In this design maps contain descriptor arrays, which in turn can contain transition arrays. If transitions are needed when no descriptor array is present, a descriptor array without real descriptors is inserted just so it can point at the transition array.

The transition array does not contain details about the field it transitions to. In order to weed out transitions to FIELDs from CONSTANT_FUNCTION (what used to be MAP_TRANSITION vs CONSTANT_TRANSITION), the transition needs to be followed and the details need to be looked up in the target map. CALLBACKS transitions are still easy to recognize since the transition targets are stored as an AccessorPair containing the maps, rather than the maps directly.

Currently AccessorPairs containing a transition and an accessor are shared between the descriptor array and the transition array. This simplifies lookup since we only have to look in one of both arrays. This will change in subsequent revisions, when descriptor arrays will become shared between multiple maps, since transitions cannot be shared.

Review URL: https://chromiumcodereview.appspot.com/10697015

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11994 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-07-05 13:54:20 +00:00
mstarzinger@chromium.org
6cf640ab6c Adapt fragmentation heuristics for over reserved pages. 
This adapts the heuristics that detect fragmented pages to reduce memory
footprint for spaces with over reserved memory. This minimizes external
fragmentation caused by pages that cannot be released to the OS because
of just a few live objects on them.

R=erik.corry@gmail.com
TEST=cctest/test-heap/ReleaseOverReservedPages

Review URL: https://chromiumcodereview.appspot.com/10629004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11901 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-06-22 09:29:49 +00:00
mstarzinger@chromium.org
a760b82cab Enable lazy compilation for non-trivial outer contexts. 
This changes the compiler to be more aggressive about lazy compilation
of closures with non-trivial outer context. Compilation can only be
triggered with a valid outer context now. One exception is the debugger,
which can request compilation of arbitrary shared code, but it ensures
to trigger compilation only at points where no context is needed.

This relands r11782, r11783, r11790 and a minor fix.

R=ulan@chromium.org
TEST=mjsunit/debug-script-breakpoints-nested

Review URL: https://chromiumcodereview.appspot.com/10543141

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11866 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-06-19 14:29:48 +00:00
erik.corry@gmail.com
045b2fbf20 Revert part of 11727 as it sometimes tanked V8 benchmark (raytrace) performance 
for reasons that are not obvious.  Now we make objects into fast-case objects
when they are made prototypes for other objects, but we do not mark objects
that are already fast case with a bit that helps keep them in fast case.
Review URL: https://chromiumcodereview.appspot.com/10556004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11831 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-06-15 11:53:09 +00:00
mstarzinger@chromium.org
9edaa1536b Revert r11782, r11783 and r11790 due to Webkit failures. 
R=danno@chromium.org

Review URL: https://chromiumcodereview.appspot.com/10536142

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11796 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-06-13 11:26:34 +00:00
mstarzinger@chromium.org
19ece2bec8 Enable lazy compilation for non-trivial outer contexts. 
This changes the compiler to be more aggressive about lazy compilation
of closures with non-trivial outer context. Compilation can only be
triggered with a valid outer context now. One exception is the debugger,
which can request compilation of arbitrary shared code, but it ensures
to trigger compilation only at points where no context is needed.

R=ulan@chromium.org
TEST=mjsunit/debug-script-breakpoints-nested

Review URL: https://chromiumcodereview.appspot.com/10538102

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11782 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-06-12 15:57:50 +00:00
erik.corry@gmail.com
911d447b96 Keep track of which maps are associated with prototype objects so we can tune the fast-case vs. hash map heuristics accordingly. 
This is a reland of r11681 https://chromiumcodereview.appspot.com/10448011 , which was reverted because of layout test failures that were actually caused by the long-standing issue fixed in https://chromiumcodereview.appspot.com/10515006 (r11706).
Review URL: https://chromiumcodereview.appspot.com/10532021

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11727 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-06-06 10:17:26 +00:00
erik.corry@gmail.com
b7b43e9af9 Revert r11681 https://chromiumcodereview.appspot.com/10448011 
(Keep track of which maps are associated with prototype objects so we can tune the fast-case vs. hash map heuristics accordingly.).
Reverting because the dict-mode to fast case transformation loses the iteration order information.
Review URL: https://chromiumcodereview.appspot.com/10448097

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11685 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-05-31 09:27:39 +00:00
erik.corry@gmail.com
8cf2af4392 Keep track of which maps are associated with prototype objects 
so we can tune the fast-case vs. hash map heuristics accordingly.
Review URL: https://chromiumcodereview.appspot.com/10448011

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11681 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-05-30 14:40:57 +00:00
mstarzinger@chromium.org
ebe9a0e0b2 Fix missing write barrier in store field stub. 
R=vegorov@chromium.org
BUG=v8:2143,v8:1465,chromium:129355
TEST=cctest/test-heap/Regress2143

Review URL: https://chromiumcodereview.appspot.com/10443052

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11678 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-05-29 16:39:26 +00:00
danno@chromium.org
9910edbb9a Implement tracking and optimizations of packed arrays 
R=jkummerow@chromium.org
TEST=jkummerow@chromium.org

Review URL: https://chromiumcodereview.appspot.com/10170030

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11636 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-05-23 14:24:29 +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
731e4ed33b Fix regression test from r11556 for no-snapshot. 
R=yangguo@chromium.org
BUG=v8:1465
TEST=cctest/test-heap/Regress1465

Review URL: https://chromiumcodereview.appspot.com/10391136

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11558 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-05-15 09:08:31 +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
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
erik.corry@gmail.com
f7b4a96b84 Fix spurious bugs in GrowAndShrinkNewSpace when the 
min and max new space sizes are equal.
Review URL: https://chromiumcodereview.appspot.com/10241002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11456 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-04-26 14:45:58 +00:00
mstarzinger@chromium.org
2df9c8828f Fix presubmit error in r11243. 
R=ulan@chromium.org
TEST=cctest/test-heap/OptimizedAllocationAlwaysInNewSpace

Review URL: https://chromiumcodereview.appspot.com/10010010

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11244 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-04-05 16:40:13 +00:00
mstarzinger@chromium.org
78226352b7 Ensure HAllocateObject always allocates in new-space. 
This is needed so that we can start removing write-barriers in optimized
code if we can prove that the receiver object is always in new-space.

TEST=cctest/test-heap/OptimizedAllocationAlwaysInNewSpace

Review URL: https://chromiumcodereview.appspot.com/10008007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11243 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-04-05 15:36:31 +00:00
ulan@chromium.org
232d990545 Reset function info counters after context disposal in incremental marking step. 
R=mstarzinger@chromium.org
BUG=117767,V8:1902
TEST=test/cctest/test-heap/ResetSharedFunctionInfoCountersDuringIncrementalMarking

Review URL: https://chromiumcodereview.appspot.com/9903019

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11222 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-04-03 17:22:05 +00:00
ulan@chromium.org
2b554f2448 Make progress in incremental marking if scavenge is delaying mark-sweep. 
R=mstarzinger@chromium.org

Review URL: https://chromiumcodereview.appspot.com/9965054

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11213 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-04-03 07:32:19 +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
mstarzinger@chromium.org
1a356cff3e Fix redefinition of aliased elements in arguments. 
This refactors the way we (re)define elements to perform normalization
and attribute updating at a much deeper level, thereby removing some
bogus special cases in upper runtime layers.

Most element setters take an indicator flag that distinguishes between
setting and defining. Setting of an element causes attributes to remain
unchanged, writability to be checked and callbacks to be called.
Defining of an element causes attributes to be updated and callbacks to
be overridden. The same approach could be taken for properties.

R=svenpanne@chromium.org
BUG=v8:1772
TEST=test262,test262/15.2.3.6-4-333-11

Review URL: https://chromiumcodereview.appspot.com/9443014

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10808 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-02-23 11:43:07 +00:00
mstarzinger@chromium.org
bc7e01534d Cleanup idle notification tests. 
R=ulan@chromium.org
TEST=cctest/test-api/IdleNotification

Review URL: https://chromiumcodereview.appspot.com/9403014

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10713 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-02-15 15:42:50 +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
svenpanne@chromium.org
96b590d95e Fix for an obscure ARM GCC bug 
Removing 2 "static" modifiers which didn't really serve a purpose did
the trick...

Review URL: https://chromiumcodereview.appspot.com/9264033

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10553 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-01-30 14:57:36 +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
danno@chromium.org
57525ef893 Store transitioned JSArray maps in global context 
BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/9073007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10523 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-01-26 21:47:57 +00:00
mstarzinger@chromium.org
5c92e4f1c3 Add regression test for r10451. 
R=vegorov@chromium.org
TEST=cctest/test-heap/PrototypeTransitionClearing

Review URL: https://chromiumcodereview.appspot.com/9138016

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10455 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-01-20 12:44:04 +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
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
vegorov@chromium.org
006c867849 Fix cctest/test-heap/InstanceOfStubWriteBarrier when Crankshaft is disabled. 
R=fschneider@chromium.org

Review URL: http://codereview.chromium.org/9188010

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10394 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-01-11 17:28:23 +00:00
mstarzinger@chromium.org
6420887ff1 Fix Mac build boken in r10383. 
R=vegorov@chromium.org
TEST=cctest/test-heap/TestSizeOfObjects

Review URL: http://codereview.chromium.org/9187004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10385 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-01-11 10:59:21 +00:00
mstarzinger@chromium.org
83d912f0e4 Make heap size estimation more accurate. 
This improves the heap size estimation by not counting lazy swept pages
as completely allocated but use their live bytes counter instead.

R=vegorov@chromium.org
BUG=v8:1893
TEST=cctest/test-heap/TestSizeOfObjects

Review URL: http://codereview.chromium.org/9173001

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10383 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-01-11 10:33:34 +00:00
vegorov@chromium.org
c92a3949ea Fix build failure introduced by r10380 
TBR=mstarzinger@chromium.org

Review URL: http://codereview.chromium.org/9190002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10381 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-01-11 09:49:47 +00:00
vegorov@chromium.org
74ef753067 Change inlined cache of intanceof stub to use indirection through cell. 
The stub was directly patching caller's code without issuing write barrier which violated incremental marking invariants.

R=mstarzinger@chromium.org
BUG=http://crbug.com/109448
TEST=cctest/test-heap/InstanceOfStubWriteBarrier

Review URL: http://codereview.chromium.org/9158015

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10380 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-01-11 09:39:37 +00:00
fschneider@chromium.org
6c0a4f5d45 Fix bug with filtering of foreign context maps in the type feedback. 
The first attempt did not properly handle keyed loads/stores and
did not check the constructors of the objects in the prototype
chain.

Added two more tests to handle the fixed cases.

BUG=v8:1823
TEST=LeakGlobalObjectViaMapKeyed,LeakGlobalContextViaMapProto
Review URL: http://codereview.chromium.org/8974009

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10277 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2011-12-19 12:39:52 +00:00
fschneider@chromium.org
b6b4af9d89 Filter out maps from different global context when collecting type feedback. 
This avoid leaking memory because optimized code may hold on to maps
from different tabs otherwise.

BUG=v8:1823, 102895
Review URL: http://codereview.chromium.org/8892002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10257 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2011-12-14 14:01:54 +00:00
ulan@chromium.org
0fd7350595 Relax test condition to make it less brittle. 
BUG=
TEST=cctest/test-api/IdleNotificationWithHint

Review URL: http://codereview.chromium.org/8839007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10202 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2011-12-07 16:08:09 +00:00
ulan@chromium.org
cda5b1a53f Use the old handler for low frequency idle notifications. 
BUG=
TEST=

Review URL: http://codereview.chromium.org/8818005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10179 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2011-12-06 14:30:21 +00:00
ulan@chromium.org
59897dbe44 Fix compile errors on Windows and Mac introduced by r10093. 
BUG=
TEST=

Review URL: http://codereview.chromium.org/8746021

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10099 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2011-11-30 16:55:55 +00:00
ulan@chromium.org
8dc728126e Start incremental marking on idle notification. 
BUG=v8:1458
TEST=cctest/test-api/IdleNotification*

Review URL: http://codereview.chromium.org/8519002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10093 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2011-11-30 11:13:36 +00:00
ulan@chromium.org
0d536dec26 Shrink the new space and uncommit marking deque on low memory notification. 
BUG=v8:1669
TEST=cctest/test-heap/CollectingAllAvailableGarbageShrinksNewSpace

Review URL: http://codereview.chromium.org/8065003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@9912 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2011-11-08 12:42:02 +00:00
keuchel@chromium.org
80d1b898fb Fix gcc-4.6 warnings. 
BUG=v8:1806

Review URL: http://codereview.chromium.org/8386072

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@9867 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2011-11-03 08:59:01 +00:00
vegorov@chromium.org
3e9891c1d0 Enable code flushing for full (non-incremental) collections. 
This will ensure that we will flush code when we hit memory limits.

R=erik.corry@gmail.com
BUG=v8:1609

Review URL: http://codereview.chromium.org/8060053

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@9484 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2011-09-29 13:51:47 +00:00
mstarzinger@chromium.org
7414229602 Fix compilation of GrowAndShrinkNewSpace on Mac. 
R=jkummerow@chromium.org
BUG=v8:1707
TEST=cctest/test-heap/GrowAndShrinkNewSpace

Review URL: http://codereview.chromium.org/7989009

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@9405 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2011-09-22 16:40:07 +00:00
mstarzinger@chromium.org
190d8d671d Cleanup and enable GrowAndShrinkNewSpace test case. 
R=svenpanne@chromium.org
BUG=v8:1707
TEST=cctest/test-heap/GrowAndShrinkNewSpace

Review URL: http://codereview.chromium.org/7995004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@9398 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2011-09-22 14:50:20 +00:00
danno@chromium.org
f48c9f6557 Basic support for tracking smi-only arrays on ia32. 
Activated by the flag --smi-only-arrays

Currently not crankshaft support, using flag on non-ia32 platforms will lead to write barrier misses and crashes.

BUG=none
TEST=elements_kind.js

Review URL: http://codereview.chromium.org/7901016

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@9392 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2011-09-22 11:30:04 +00:00
mstarzinger@chromium.org
bffbcefffb Fix new space shrinking to compute correct capacity. 
R=vegorov@chromium.org
BUG=v8:1702
TEST=cctest/test-heap/GrowAndShrinkNewSpace

Review URL: http://codereview.chromium.org/7983001

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@9348 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2011-09-20 15:35:36 +00:00
mstarzinger@chromium.org
86832d5924 Fix new space shrinking to reset from-space. 
R=lrn@chromium.org
BUG=v8:1702
TEST=cctest/test-heap/GrowAndShrinkNewSpace

Review URL: http://codereview.chromium.org/7976003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@9346 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2011-09-20 13:37:40 +00:00
vegorov@chromium.org
ac36cb4504 Merge experimental/gc branch to the bleeding_edge. 
Review URL: http://codereview.chromium.org/7945009

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@9328 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2011-09-19 18:36:47 +00:00
vitalyr@chromium.org
1dcb6e33cd Minimize malloc heap allocation on process startup. 
R=vegorov@chromium.org
BUG=http://b/issue?id=5095592

Review URL: http://codereview.chromium.org/7572018

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@8833 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2011-08-04 15:18:18 +00:00
karlklose@chromium.org
f4e4bc43a8 Merge arguments branch to bleeding edge (second try). 
Review URL: http://codereview.chromium.org/7187007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@8315 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2011-06-16 14:12:58 +00:00
karlklose@chromium.org
cc19d1e278 Revert "Merge arguments branch to bleeding merge." 
This reverts commit ceb31498b9d69edca3260820fb4047045891ce6d.

TBR=kmillikin@chromium.org

Review URL: http://codereview.chromium.org/7172030

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@8308 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2011-06-16 06:37:49 +00:00
karlklose@chromium.org
6cfeb2d400 Merge arguments branch to bleeding merge. 
Review URL: http://codereview.chromium.org/7167006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@8300 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2011-06-15 15:09:28 +00:00
sgjesse@chromium.org
8099bf3531 Revert "Never use classic code generator." 
This reverts r7469 which might have caused the timeouts on the buildbot.

TBR=ager@chromium.org

BUG=
TEST=

Review URL: http://codereview.chromium.org//6788009

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7481 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2011-04-01 14:38:30 +00:00
ager@chromium.org
1528bf7240 Never use classic code generator. 
Crankshaft is now the default on all platforms. This is the first
patch on the way to removing the classic code generator from the
system.

R=kmillikin@chromium.org
BUG=
TEST=

Review URL: http://codereview.chromium.org/6771045

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7469 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2011-04-01 10:52:18 +00:00
vitalyr@chromium.org
179aef2b8f VM initialization refactoring. 
This patch introduces global once per-process initialization and moves
the OS and CPU setup there. This makes CPU features isolate-independent.

Review URL: http://codereview.chromium.org/6670119

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7462 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2011-03-31 16:17:37 +00:00
vitalyr@chromium.org
7976ca2cbc Merge isolates to bleeding_edge. 
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7271 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2011-03-18 20:35:07 +00:00
vitalyr@chromium.org
76e226f832 Revert r7268: it borked the history. 
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7269 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2011-03-18 19:41:05 +00:00
vitalyr@chromium.org
6ff7fdebd3 Merge isolates to bleeding_edge. 
Review URL: http://codereview.chromium.org/6685088

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7268 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2011-03-18 18:49:56 +00:00
mmaly@chromium.org
9dc156ac62 Passing strict mode throughout SetElement. 
Throw if assigning to read only element.
Adding tests for element assignment in strict mode.

Fix tests for strict mode SetElement.

Review URL: http://codereview.chromium.org/6613005/

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7053 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2011-03-04 00:21:52 +00:00
mmaly@chromium.org
1d040083b0 Assignment to read only properties throws in strict mode. 
Review URL: http://codereview.chromium.org/6594037/

Revert "Revert "Assignment to read only properties throws in strict mode.""

This reverts commit aefcd82e1d36d458dd071ebf4777340f08aa67b1.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7007 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2011-03-02 04:53:43 +00:00
mmaly@chromium.org
749b69853a Revert "Assignment to read only properties throws in strict mode." 
This reverts commit 503f2a501e504f330821f247074e731aa649b1f0.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6977 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2011-03-01 06:10:41 +00:00
mmaly@chromium.org
98aea3c353 Assignment to read only properties throws in strict mode. 
Review URL: http://codereview.chromium.org/6594037/

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6976 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2011-03-01 01:42:37 +00:00
mikhail.naganov@gmail.com
a968ed0470 Implement HeapIterator that skips over unreachable objects. 
I'm using it when creating heap snapshots. I decided that it will
be more convenient to have it as a separate piece of code, instead
of embedding into the snapshot generator.

Review URL: http://codereview.chromium.org/6014004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6091 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2010-12-21 10:49:40 +00:00
kasperl@chromium.org
90b3370374 Update V8 to version 3.0 (re-land r5920). 
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5922 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2010-12-07 11:31:57 +00:00
kasperl@chromium.org
51b494d096 Revert r5920. Will re-land shortly. 
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5921 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2010-12-07 11:01:02 +00:00
kasperl@chromium.org
e5860bd6a8 Update V8 to version 3.0. 
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5920 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2010-12-07 09:11:56 +00:00
mikhail.naganov@gmail.com
2a8eb35548 Provide more accurate results about used heap size via GetHeapStatistics. 
I observed that used heap size provided by Heap::SizeOfObjects() is
usually about ~10% bigger than the number calculated by summing up
heap objects sizes.

This aligns DevTools Timeline stats with Heap profiler stats.

Review URL: http://codereview.chromium.org/4888001

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5825 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2010-11-15 10:38:24 +00:00
erik.corry@gmail.com
ea7639a813 Last minute typos from the last change. 
TBR=vegorov
Review URL: http://codereview.chromium.org/4037006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5699 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2010-10-25 15:29:06 +00:00
erik.corry@gmail.com
0dcaac1939 Make Failure inherit from MaybeObject instead of Object. 
Review URL: http://codereview.chromium.org/3970005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5698 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2010-10-25 15:22:03 +00:00
vegorov@chromium.org
0028030dad Fix TestInternalWeakLists test 
Releasing context handle is not enough to release context, it might be indirectly reachable through compilation cache.

TBR=sgjesse@chromium.org

Review URL: http://codereview.chromium.org/3750017

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5652 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2010-10-18 17:01:30 +00:00
vegorov@chromium.org
b2b7aa6f3b Link all global contexts into a weak list. 
Review URL: http://codereview.chromium.org/3764011

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5649 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2010-10-18 14:59:03 +00:00
antonm@chromium.org
9673ee5d59 Get rid of requested size in RetryAfterGC. 
This was only used by Heap::CollectGarbage to check if after GC
available space is bigger than was requested, but nobody checked
the value returned by Heap::CollectGarbage, so requested size
was efficiently unused.

However, it may trigger spurious out of memory exceptions if requested
size is big enough.

BUG=http://code.google.com/p/chromium/issues/detail?id=54580

Review URL: http://codereview.chromium.org/3836001

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5642 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2010-10-18 12:58:56 +00:00
erik.corry@gmail.com
663f378da5 Get gcc to check that we don't ignore return values of functions that can 
fail to allocate because we need a GC.
Review URL: http://codereview.chromium.org/3274008

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5379 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2010-08-31 08:05:42 +00:00
vitalyr@chromium.org
b5bbf957a8 Make instance_size immediately useful for all fixed size objects. 
For variable sized objects this field doesn't really make any sense so
by putting a special value there we can improve SizeFromMap().

Review URL: http://codereview.chromium.org/3127016

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5301 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2010-08-18 13:00:38 +00:00
vegorov@chromium.org
7113163145 Fix presubmit and check failures introduced by r5284. 
Review URL: http://codereview.chromium.org/3141021

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5285 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2010-08-17 12:10:27 +00:00
vegorov@chromium.org
9ed501d95f Merge flush code phase into marking phase. 
Review URL: http://codereview.chromium.org/3135026

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5284 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2010-08-17 11:44:01 +00:00
antonm@chromium.org
793d0a92b9 Add a check that weak object handle is not in NEAR_DEATH state after weak callback invocation. 
If object enters NEAR_DEATH state, it must be explicitly cleared and/or disposed, otherwise
it would retain JS object forever.  Note as well that parameter is reset to NULL on first
invocation so weak handle callback would be in hard situation.

Review URL: http://codereview.chromium.org/3011009

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5096 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2010-07-19 13:26:25 +00:00
kaznacheev@chromium.org
0243bc875c Move serialized scope info from Code object to SharedFunctionInfo. 
The scope info is now stored in a FixedArray referenced from SharedFunctionInfo.


Review URL: http://codereview.chromium.org/2918001

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5056 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2010-07-13 13:06:33 +00:00
ricow@chromium.org
407aaa9823 Only perform code flusing test if we actually do code flushing. 
Puts a check into the code flushing test to only perform this if the
flush_code flag is set to true. 


Review URL: http://codereview.chromium.org/2734006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4842 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2010-06-11 08:52:36 +00:00
ricow@chromium.org
316092c364 Flushing of code from functions that we expect not to use again. 
This adds an additional step to full gc, removing code from functions
that are no longer in the compilation cache. The code is replaced with
a lazy compile version enabling us to recompile the function in case
we do actually need it again.

Review URL: http://codereview.chromium.org/2632003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4814 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2010-06-07 15:39:10 +00:00
vegorov@chromium.org
fc7c5f789a Cardmarking writebarrier. 
Reapply r4715 with fixes reviewed in http://codereview.chromium.org/2276002.

Review URL: http://codereview.chromium.org/2255004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4743 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2010-05-27 12:30:45 +00:00
vegorov@chromium.org
e268fbdaba Revert r4715. 
TBR=ager@chromium.org
Review URL: http://codereview.chromium.org/2274001

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4723 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2010-05-26 09:24:44 +00:00
vegorov@chromium.org
675e711f1c Cardmarking writebarrier. 
- New сardmarking write barrier handles large objects and normal objects in a similar fashion (no more additional space for pointer tracking is required, no conditional branches in WB code).
- Changes to enable oldspaces iteration without maps decoding:
-- layout change for FixedArrays: length is stored as a smis (initial patch by
Kevin Millikin)
-- layout change for SharedFunctionInfo: integer fields are stored as smi on
arm, ia32 and rearranged on x64.
-- layout change for String: meaning of LSB bit is fliped (1 now means hash not
computed); on x64 padding is added.
-- layout of maps is _not_ changed. Map space is currently iterated in a special
way.

Review URL: http://codereview.chromium.org/2144006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4715 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2010-05-25 13:15:16 +00:00
vegorov@chromium.org
2241d2af45 Reverting r4703. 
TBR=ager@chromium.org
Review URL: http://codereview.chromium.org/2073018

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4704 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2010-05-21 17:37:47 +00:00
vegorov@chromium.org
8879691793 Cardmarking writebarrier. 
Reapplication of r4685 (reviewed http://codereview.chromium.org/2101002) with minor modifications:

- Fix compilation problems on Win64.
- Improve heap verification pass: search for garbage pointers to new space not only in dirty regions but in all regions.

Review URL: http://codereview.chromium.org/2114015

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4703 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2010-05-21 15:52:38 +00:00
vegorov@chromium.org
955828e437 Reverting r4685, r4686, r4687 
TBR=ager@chromium.org
Review URL: http://codereview.chromium.org/2071020

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4688 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2010-05-20 14:02:51 +00:00
vegorov@chromium.org
b38a0a719a - Changes to enable oldspaces iteration without maps decoding: 
-- layout change for FixedArrays: length is stored as a smis (initial patch by Kevin Millikin)
-- layout change for SharedFunctionInfo: integer fields are stored as smi on arm, ia32 and rearranged on x64.
-- layout change for String: meaning of LSB bit is fliped (1 now means hash not computed); on x64 padding is added.
-- layout of maps is _not_ changed. Map space is currently iterated in a special way.
- Cardmarking write barrier. New barrier handles large objects and normal objects in a similar fashion (no more additional space for pointer tracking is required, no conditional branches in WB code).

Review URL: http://codereview.chromium.org/2101002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4685 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2010-05-20 13:10:38 +00:00
vegorov@chromium.org
cb27d09534 Fix bugs introduced by r4475: 
- RelinkPageListInChunkOrder might relink unused pages into the middle of a sequence of used pages. Filler objects should be placed at the beginning of such unused pages otherwise generic iterators (e.g. HeapObjectIterator) would not handle them correctly. 
- ObjectAreaEnd() should not be used as an allocation limit for pages from FixedSpace. Pages in such spaces do not use top page_extra_ bytes of object area.

TBR=ager@chromium.org
Review URL: http://codereview.chromium.org/1700005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4476 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2010-04-22 16:43:38 +00:00
vegorov@chromium.org
3fa49f8b91 Put empty pages discovered during sweeping to the end of the list of pages 
instead of adding them to the free list.
Review URL: http://codereview.chromium.org/1683001

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4475 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2010-04-22 14:42:21 +00:00
lrn@chromium.org
7bca61c11d Fix build problems on Windows 64-bit by casting. 
Gave the root register a name for reference.

Review URL: http://codereview.chromium.org/1539033

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4397 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2010-04-13 11:59:37 +00:00
antonm@chromium.org
94a2a0956b Add a test to verify correctness of remembered set update for Heap::CopyJSObject. 
Review URL: http://codereview.chromium.org/1256002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4286 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2010-03-25 15:32:58 +00:00
antonm@chromium.org
f45c35ebd3 Allow empty handles to escape handle scopes. 
BUG=39170

Review URL: http://codereview.chromium.org/1235002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4278 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2010-03-25 14:07:17 +00:00
antonm@chromium.org
9477ea8735 Fix LargeObjectSpace::Contains to check if addr is in new space. 
Otherwise page header check is not quite robust: if there is a smi
at the same offset as Page::is_normal_page field, wrong result would
be returned.

That shouldn't be the problem for paged spaces as objects in those
pages do not span page boundaries and thus cannot mess with ::is_normal_page field.

Review URL: http://codereview.chromium.org/1175001

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4270 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2010-03-25 13:10:50 +00:00
ager@chromium.org
d103ae66ba Change allocations in test-heap to use handles. This makes the test 
work when garbage collections are forced in random places.

Review URL: http://codereview.chromium.org/669153

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4033 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2010-03-05 09:51:10 +00:00
antonm@chromium.org
29af9c54a4 Merge ObjectIterator::has_next and ObjectIterator::next methods. 
This reduces chances of improper usage, see http://code.google.com/p/v8/issues/detail?id=586
for more details.

BUG=586

Review URL: http://codereview.chromium.org/555072

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@3696 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2010-01-25 22:53:18 +00:00
sgjesse@chromium.org
eb4d261e24 Remove the different length string types 
The different length string types was used to encode the string length and the hash in one field. This is now split into two fields one for length and one for hash. The hash field still encodes the array index of the string if it has one. If an array index is encoded in the hash field the string length is added to the top bits of the hash field to avoid a hash value of zero.

On 32-bit this causes an additional 4 bytes to be used for all string objects. On 64-bit this will be half on average dur to pointer alignment.
Review URL: http://codereview.chromium.org/436001

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@3350 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2009-11-24 14:10:06 +00:00
lrn@chromium.org
d53f05e3e2 Fix warnings on Win64. 
Set warning level to /W3 and change implicit conversions from size_t
to int. Most "fixes" are simply manifesting the implicit casts or using
a special strlen replacement that returns int.

Review URL: http://codereview.chromium.org/390004


git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@3273 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2009-11-11 09:50:06 +00:00
lrn@chromium.org
5767628039 Removed 31-bit smis. 
Review URL: http://codereview.chromium.org/267049


git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@3046 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2009-10-12 11:19:20 +00:00
lrn@chromium.org
aed6a37c10 X64: Convert smis to holding 32 bits of payload. 
Review URL: http://codereview.chromium.org/196139


git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@3037 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2009-10-08 12:36:12 +00:00
ager@chromium.org
74241d5116 Change ASSERT to CHECK in test-heap. Use int instead of intptr_t to 
make MacOS compiler happier.

We need to clean this stuff up.

TBR=whesse@chromium.org
Review URL: http://codereview.chromium.org/182044

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2802 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2009-09-01 15:51:51 +00:00
whesse@chromium.org
13d59a069d Add explicit integer type-casts to make WIN64 build without errors. 
Review URL: http://codereview.chromium.org/178054

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2795 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2009-09-01 13:08:16 +00:00
whesse@chromium.org
f20c7be069 Fix errors in test-heap.cc and test-decls.cc. Adjust cctest.status. 
Review URL: http://codereview.chromium.org/172089

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2708 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2009-08-18 12:43:36 +00:00
iposva@chromium.org
1ce28eda0b - Expose CanvasPixelArray functionality directly in JavaScript 
indexed property accesses.
- The IC stubs have not been updated to handle these directly, but
  at least we do not have to leave the VM to access bytes.

Review URL: http://codereview.chromium.org/159263

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2549 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2009-07-28 08:43:51 +00:00
whesse@chromium.org
76833936b7 Make Array::kHeaderSize protected, and only use kHeaderSize of its subclasses. 
Many X64 bugs have been due to the difference between (unaligned) Array::kHeaderSize and (aligned) FixedArray::kHeaderSize.
Review URL: http://codereview.chromium.org/155687

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2502 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2009-07-17 12:12:24 +00:00
bak@chromium.org
7dab62ee96 Changed allocation to allow large objects to be allocated in new space. 
This avoids back-to-back mark-sweep collections.

Review URL: http://codereview.chromium.org/136001

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2219 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2009-06-18 14:06:36 +00:00
ager@chromium.org
24d22b567a Introduce an API to force the deletion of a property ignoring 
interceptors and dont-delete attributes.

Minor change to the behavior of eval: throw exception when calling
eval in a context for which the global has been detached.  This
matches the behavior of both Firefox and Safari post navigation in the
browser.
Review URL: http://codereview.chromium.org/118374

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2118 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2009-06-08 09:46:09 +00:00
lrn@chromium.org
e9f1a09f9d X64: Omitted creating native builtins and using them in test-heap. 
This allows test-heap to run successfully.

Review URL: http://codereview.chromium.org/115706


git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2034 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2009-05-22 14:01:06 +00:00
lrn@chromium.org
c27d0f7b4b X64: Fixups in heap-test.cc to make it compile in X64 mode. 
Review URL: http://codereview.chromium.org/113574


git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@1994 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2009-05-19 08:59:23 +00:00
erik.corry@gmail.com
608a99a90c Remove all uses of StringShape variables, since that has proven 
to be error-prone and of little benefit in terms of performance.
Review URL: http://codereview.chromium.org/45010

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@1521 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2009-03-17 09:33:06 +00:00
iposva@chromium.org
c093e94546 - Pass the knowledge whether the old GC is compacting to the GC prologue and epilogue. This allows us to skip frame cooking and uncooking when doing a mark-sweep GC. 
- Add the ability for the code to refer to its code object by adding a handle to the code object in the MacroAssembler.

Review URL: http://codereview.chromium.org/27133

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@1368 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2009-02-25 16:52:15 +00:00
erik.corry@gmail.com
eca89dc765 Create an abstraction for the string type flags so that they can be cached. 
Read the objects.h change first to understand what's going on here.
Review URL: http://codereview.chromium.org/9038

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@675 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2008-11-03 10:16:05 +00:00
christian.plesner.hansen@gmail.com
c7ed0707a3 - Added const in a few places. 
- Changed WeakReferenceCallback to take a Persistent<Value> instead of
  a Persistent<Object>.
- Removed Message::GetUnderline and Message::GetScriptData.
- Added Value::IsDate, Date::Cast and Date::Value.


git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@564 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2008-10-23 08:25:23 +00:00
bak@chromium.org
bf948c8313 - Optimized CopyFixedArray and CopyJSObject. 
- Refactored block copying.

Review URL: http://codereview.chromium.org/7863

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@548 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2008-10-22 08:21:18 +00:00
christian.plesner.hansen@gmail.com
76b1efea2d - Specialized slow-case string equality nine ways based on the 
underlying string representation of the two strings involved.
- Renamed ascii and two byte string classes to sequential ascii and
  sequential two byte, and renamed IsAscii and friends to
  IsAsciiRepresentation.  This is to make a clear distinction between
  strings with an ascii/two-byte representation, of which there is
  four, and flat sequential ascii/two-byte string.


git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@474 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2008-10-09 08:08:04 +00:00
christian.plesner.hansen@gmail.com
9bed566bdb Changed copyright header from google inc. to v8 project authors. 
Added presubmit step to check copyright.



git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@242 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2008-09-09 20:08:45 +00:00
erik.corry@gmail.com
388c1094b7 * Split up code_space into old_data_space and code_space. 
* Make old_data_space non-executable on OSs and hardware that support it.
* Rename old_space to old_pointer_space (can contain pointers, esp. to new space).
* Ensure that individual pages allocated for old_space are only executable when
they are for code objects.
* Ensure Space::Setup can cope with non-aligned memory.
* Make some methods on Spaces virtual.  Make a way to iterate over all spaces.
* Replace executability flag with Executability enum in order to make intent at
call site clearer.
* Fix serialization/deserialization to allocate write barrier memory for large
arrays.



git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@165 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2008-09-05 12:34:09 +00:00
christian.plesner.hansen
968facb9ff - Fixed issue when building samples and cctests on 64-bit machines. 
- Fixed mozilla test breakage caused by python's obscure module
  loading rules.
- Made sure test.py propagates test failures out as the exit code of
  the script.
- Remove runtime calls to get number constants. Remove Heap roots for
  some special numbers.
- Fix typo in accessors.h.
- Changes CopyMap to not copy descriptors.  Adds
  CopyMapRemoveTransitions that copies non-transition descriptors.
  Changes interface of DescriptorArray::Copy operations to simplify
  them.


git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@21 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2008-08-27 13:47:52 +00:00
christian.plesner.hansen
c42f5829a1 Included mjsunit JavaScript test suite and C++ unit tests. 
In the shell sample don't print the result of executing a script, only
evaluating expressions.

Fixed issue when building samples on Windows using a shared V8
library.  Added visibility option on Linux build which makes the
generated library 18% smaller.

Changed build system to accept multiple build modes in one build and
generate seperate objects, libraries and executables for each mode.

Removed deferred negation optimization (a * -b => -(a * b)) since this
visibly changes operand conversion order.

Improved parsing performance by introducing stack guard in preparsing.
Without a stack guard preparsing always bails out with stack overflow.


git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@16 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2008-08-22 13:33:59 +00:00