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53 Commits

Author SHA1 Message Date
svenpanne@chromium.org
ff216c9cea Re-land: Use map transitions when defining accessor properties. 
This is basically r11496, with the following changes:

 * Set back pointers in maps (cherry-picked from r11528)

 * Fixed size calculation in CopyInsert, as proposed by mstarzinger/rossberg

 * DefineFastAccessor uses GetCallbackObject instead of GetValue (for __proto__)

 * Put the code under a new flag, which is disabled by default

 * Cut down the corresponding regression test

 * Adapted bootup memory test, we actually only need a bit more memory on 64bit without snapshots, which can easily explained by more live maps lying around. Note that the snapshot variants are back to their previous limits.

Next steps: Investigate any performance degradationswith the flag enabled, and finally remove the flag when things are OK. Furthermore, GetCallbackObject should be merged into GetValue, the distinction is confusing and error-prone.

Review URL: https://chromiumcodereview.appspot.com/10445009

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11651 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-05-24 10:40:24 +00:00
svenpanne@chromium.org
b8c63a576e Bumped bootup memory limit on 32bit platforms using snapshot. 
Somehow the mmaps we do look the same, but the info in the proc FS tells us that
we use a bit more memory. I am not sure if this is a real issue or not, but this
CL should at least get the build bots green again...

TBR=erik.corry@gmail.com
TEST=cctest/test-mark-compact/BootUpMemoryUse

Review URL: https://chromiumcodereview.appspot.com/10342016

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11500 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-05-03 14:31:20 +00:00
erik.corry@gmail.com
1d9cebd002 Loosen up the test for boot time memory use on 64 bit. 
Review URL: https://chromiumcodereview.appspot.com/9969051

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11209 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-04-02 13:29:04 +00:00
erik.corry@gmail.com
f00631b710 Reduce initial boot-up memory use. This is an other attempt at what 
http://codereview.chromium.org/9179012 was trying to achieve.  This
time I am going for 80% of the benefit with around 5% of the complexity.

It works by reducing the size of the first page in each space.  Unlike the
previous change there is no attempt to grow pages, we just allocate more
full-sized pages when we need more memory.  For this reason the first pages are
not quite as small (compare
http://codereview.chromium.org/9179012/diff/1/src/snapshot.h with the changes
in spaces.cc in this cl):  We want to be able to do a little bit of allocation
before we have to add a full-sized page to the space.
Review URL: https://chromiumcodereview.appspot.com/9950048

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11203 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-04-02 08:32:31 +00:00
fschneider@chromium.org
19d61a6981 Adjust limit for booted memory test. 
a previous change decreased the size of a zone object and it seems
that sometimes the OS report more memory used even though there
is less zone allocation.
Review URL: https://chromiumcodereview.appspot.com/9443019

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10814 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-02-23 14:36:11 +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
erik.corry@gmail.com
79112684b5 Increase size of small stacks from 32k to 64k to avoid hitting 
limits in Chromium.
http://code.google.com/p/chromium/issues/detail?id=112843
Review URL: https://chromiumcodereview.appspot.com/9353006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10615 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-02-07 08:00:36 +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
erik.corry@gmail.com
448b6bbc41 Flush number string cache on GC (bug 1605). Also start with a small 
number string cache and only grow it if needed, which will be useful
for saving boot time memory use.
This is a second try for  https://chromiumcodereview.appspot.com/923502
after fixing an unrelated stack overflow issue.
Review URL: https://chromiumcodereview.appspot.com/9169080

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10513 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-01-26 11:32:01 +00:00
erik.corry@gmail.com
248adeb110 Revert 10502 (smaller number string cache) due to test failures. 
Review URL: https://chromiumcodereview.appspot.com/9113060

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10504 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-01-25 15:17:26 +00:00
erik.corry@gmail.com
a49c8a19ee Flush number string cache on GC (bug 1605). Also start with a small 
number string cache and only grow it if needed, which will be useful
for saving boot time memory use.
Review URL: https://chromiumcodereview.appspot.com/9235029

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10502 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-01-25 14:27:58 +00:00
erik.corry@gmail.com
be288cf2b4 Initially unmap one of the semispaces to reduce memory use at boot time. 
Review URL: https://chromiumcodereview.appspot.com/9117035

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10491 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-01-24 16:00:19 +00:00
erik.corry@gmail.com
ee1d0fc5c6 Reduce the space used by the stack for the profiling thread. 
Review URL: https://chromiumcodereview.appspot.com/9117032

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10490 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-01-24 15:48:16 +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
fdc163bbbb Make from-space initially uncommitted for another 1Mbyte 
improvement in boot time memory usage.
Review URL: http://codereview.chromium.org/9242008

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10415 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-01-17 12:09:11 +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
c5c6cc5284 The memory size test makes no sense on the simulated platforms. 
Review URL: http://codereview.chromium.org/8818007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10173 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2011-12-06 12:09:11 +00:00
erik.corry@gmail.com
090be8bf15 Reduce minimum memory use on 64 bit to one page per semispace. 
Review URL: http://codereview.chromium.org/8774045

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10144 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2011-12-02 14:19:53 +00:00
erik.corry@gmail.com
0d7380da55 Let store buffer start out small for a 1Mbyte saving in boot 
memory use (2Mbyte on x64).
Review URL: http://codereview.chromium.org/8776032

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10143 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2011-12-02 14:08:12 +00:00
erik.corry@gmail.com
0ec9c63e59 Introduce a test of how much memory it takes to boot up V8. 
Linux only at the moment, since it uses /proc.  Shows that
there is room for improvement, espcially on 64 bit.
Review URL: http://codereview.chromium.org/8750001

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10122 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2011-12-01 12:32:38 +00:00
erik.corry@gmail.com
e2f2c77e6f Be more willing to expand old space when evacuating new space at the end of 
a mark-sweep.  We have a soft limit on old space size, which is designed to
trigger an old-space collection when we hit it.  Unfortunately although the
soft limit had already triggered an old space collection, the soft limit was
preventing objects from new space from being promoted.  For every promotion
candidate we were checking 3 different ways to allocate in old space before
giving up and putting the object in the other semispace.  This change allows
the promoted objects to go to old space and also makes us more eager to
sweep a page before trying other ways to find space for an object.
Review URL: http://codereview.chromium.org/8748005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10092 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2011-11-30 10:38:16 +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
302037d44e Make object groups and implicit references a bit more lightweight. 
We can only call malloc/free once per group and we can avoid scanning
through a list of NULLs if we keep unprocessed groups in the beginning.

I also changed the internal representation of implicit references to
hold a handle to the parent (instead of a direct pointer). The
prologue callback must not trigger a GC, but it's better to be safe.

Review URL: http://codereview.chromium.org/6800003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7521 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2011-04-06 19:17:54 +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
antonm@chromium.org
a7bb1d5278 Introduce one way dependencies into object grouping. 
Those are necessary to properly manage relationship between objects in cases
when they don't form proper tree structure.

Review URL: http://codereview.chromium.org/6686053

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7202 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2011-03-16 12:02:28 +00:00
mikhail.naganov@gmail.com
dee9c00267 Add an interface for an embedder to provide information about native 
objects retained by object groups and global handles.

This information is then used during heap snapshot generation
to provide a more complete memory picture.

This patch will be needed to fix https://bugs.webkit.org/show_bug.cgi?id=53659.

Review URL: http://codereview.chromium.org/6626043

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7125 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2011-03-10 12:05:31 +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
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
ager@chromium.org
f3f92b18d4 Fix executable memory setting and fix test. 
Review URL: http://codereview.chromium.org/4764002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5800 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2010-11-10 09:20:08 +00:00
ager@chromium.org
17573d771a Landing for Justin Schuh. 
Add 128MB limit for executable pages.

BUG=http://code.google.com/p/v8/issues/detail?id=925
TEST=None.
TBR=jschuh@chromium.org
Review URL: http://codereview.chromium.org/4634003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5799 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2010-11-10 08:38:42 +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
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
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
antonm@chromium.org
6619154580 A simple test for map compact. 
Review URL: http://codereview.chromium.org/543113

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@3655 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2010-01-19 16:34:37 +00:00
ager@chromium.org
9ee631338e Allow resource constraints to specify the max committed new space size 
when using snapshots.

The alignment of new space has to match the alignment in the snapshot,
but the max committed amount of memory does not.

For now, we assume that the default semispace size is always used in a
snapshot.
Review URL: http://codereview.chromium.org/300036

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@3106 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2009-10-21 15:03:34 +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
deanm@chromium.org
6297a19160 Improve mark-compact object grouping interface. 
The main goal was to improve O(n^2) behavior when there are many object groups.  The old API required the grouping to be done on the v8 side, along with a linear search.  The new interface requires the caller to do the grouping, passing V8 entire groups at a time.  This removes the group id concept on the v8 side.

  - Changed AddObjectToGroup to AddObjectGroup.
  - Removed the group id concept from the V8 side.
  - Remove a static constructor while I'm here, lazily initialize
    the object groups list.
  - Cleaned up return by non-const references to return pointers.

Review URL: http://codereview.chromium.org/13341

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@965 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2008-12-11 11:20:04 +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
deanm@chromium.org
77196c5771 This is a new static flag system, designed to have all flags in a central place, and compiled into the binary without requiring static constructors for registration. All flags are moved out of the specific modules and into flags.defs, with different sections for debug, release, etc. The flag variables are always defined. For example, a debug flag in release mode still exists, but is read only and set to the default value. 
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@296 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2008-09-12 10:19:33 +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