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

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

Review URL: http://codereview.chromium.org/3141021

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5285 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/3135026

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5284 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

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

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

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

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

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

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

- 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

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

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

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

-- 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

- 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

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

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

Review URL: http://codereview.chromium.org/1256002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4286 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

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

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

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

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

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

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

Review URL: http://codereview.chromium.org/267049


git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@3046 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/196139


git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@3037 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

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

Review URL: http://codereview.chromium.org/178054

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2795 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/172089

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2708 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

  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

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

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

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

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

Review URL: http://codereview.chromium.org/113574


git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@1994 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

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

- 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

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

- 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