multiple threads got mixed up so that the current state could be an
already deallocated state from another thread.
Review URL: http://codereview.chromium.org/3828016

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5665 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

TBR=mikhail.naganov@gmail.com

Review URL: http://codereview.chromium.org/3797016

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5664 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Since 2.6.31 perf_events interface has been available in the
kernel. There's a nice tool called "perf" (linux-2.6/tools/perf) that
uses this interface and provides capabilities similar to oprofile. The
simplest form of its usage is just dumping the raw log (trace) of
events generated by the kernel. In this patch I'm adding a script
(tools/ll_prof.py) to build profiles based on perf trace and our code
log. All the heavy-lifting is done by perf. Compared to oprofile agent
this approach does not require recompilation and supports code moving
garbage collections.

Expected usage is documented in the ll_prof's help. Basically one
should run V8 under perf passing --ll-prof flag and then the produced
logs can be analyzed by tools/ll_prof.py.

The new --ll-prof flag enables logging of generated code object
locations and names (like --log-code), and also of their bodies, which
can be later disassembled and annotated by the script.

Review URL: http://codereview.chromium.org/3831002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5663 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/3844006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5661 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

For some reason the StackGuard runtime function took a dummy argument
that it always ignored.  Change it to take no arguments.

Review URL: http://codereview.chromium.org/3838003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5660 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

TBR: erik.corry

Review URL: http://codereview.chromium.org/3812012

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5658 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/3850005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5657 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This can happen on Mac where C++ code can be in the 4-8K range.  
Review URL: http://codereview.chromium.org/3781020

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5656 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=56036
TEST=None.

Patch by Justin Schuh <jschuh@chromium.org>

Review URL: http://codereview.chromium.org/3849004



git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5655 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Clear normalized map caches in all global contexts not just in those reachable from ThreadLocalTops.

Issue reported by Mark Lam <mark.lam@palm.com> from Hewlett-Packard Development Company, LP.

Review URL: http://codereview.chromium.org/3828011

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5654 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Patch by Maciej Blizinski <blizinski@google.com>

TBR=kasperl@chromium.org
BUG=901

Review URL: http://codereview.chromium.org/3794008

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5653 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

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

The ARM simulator is compiled for 32bits. On Linux the floating-point
operations are hence invalid for the simulator too.

Fixes build-breakage.

Review URL: http://codereview.chromium.org/3813009

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5651 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Don't use floating-point operations on Linux,x86 to compute strtod. Since the
floating-point stack on Linux is set to 80bit double rounding may occure.

When falling back to gay_strtod append several '0's so that Gay doesn't take
the same shortcut either.

BUG=
TEST=

Review URL: http://codereview.chromium.org/3851003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5650 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/3764011

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5649 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/3811010

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5648 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/3767016

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5643 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

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

sure to suspend the thread (if necessary) on mac/win32 before 
reading the VM state.

Avoid dealing with signals delivered to non-VM threads on 
linux no matter if we're profiling or not.
Review URL: http://codereview.chromium.org/3845006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5641 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/3781014

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5640 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/3748013

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5637 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Fix compilation error on ARM with gcc 4.4.  Remove NULL check of pointer to member, which was dead code (never failed).
Review URL: http://codereview.chromium.org/3793011

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5636 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

HeapNumbers do consume memory, so it's worth dumping them. However, we
don't dump their values, as they are not as self-descriptive as values
of strings, and they will increase snapshot size. Storing heap numbers
values can be added if we will feel a sufficient demand for that.

InternalFields are used, e.g. for storing references to DOM nodes
event handlers.

Review URL: http://codereview.chromium.org/3769007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5635 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Do not return the constant singleton float -0.0 from UnaryOpStub, because it may be overwritten, on X64 platform.
Review URL: http://codereview.chromium.org/3748007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5631 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This is a cosmetic change only.

Review URL: http://codereview.chromium.org/3797009

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5630 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/3791009

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5629 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/3778009

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5628 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/3782009

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5627 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

TBR=kmillikin@chromium.org
Review URL: http://codereview.chromium.org/3757004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5625 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Windows' strtod doesn't correctly read 3e-324 a the lowest denormal, but returns 0.0 instead.
Using 4e-324 is still the same value and works.

BUG=
TEST=
Review URL: http://codereview.chromium.org/3744008

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5624 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

If a decimal exponent is less than -309 return 0.0.
If a decimal exponent is greater than +324 return +infinity.

BUG=
TEST=

Review URL: http://codereview.chromium.org/3519017

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5623 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/3778004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5622 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

TBR=ager@chromium.org
Review URL: http://codereview.chromium.org/3761002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5621 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Added USE_SIMULATOR macro that explicitly indicates that we wish to use the simulator as the execution engine. For example, this allows us to run with the ARM simulator on ARM.

Patch by Mark Lam <mark.lam@palm.com> from Hewlett-Packard Development Company, LP

Review URL: http://codereview.chromium.org/3825001


git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5620 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/3745005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5615 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

I created a heap snapshot in Chromium, and then started comparing
it side-by-side with representations of objects provided by
the debugger, fixing discrepancies.

Review URL: http://codereview.chromium.org/3590029

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5612 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/3776001

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5609 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

In the FullCodeGenerator, we compile the true subexpression of a
conditional (ternary) expression in the inherited context of the
entire expression.  This is correct for effect and value contexts, but
not for test contexts where the context includes a possible
fall-through label.

Review URL: http://codereview.chromium.org/3621013

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5607 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

The existing cache was build to support changes to fast-dtoa. This complicated the cache. Since the cached numbers are now in a .cc file they can be shared with other parts of v8.

Review URL: http://codereview.chromium.org/3608011

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5606 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Reapply r5603 with additional fix: use OS::StrNCpy instead of posix strncpy.

BUG=
TEST=

Review URL: http://codereview.chromium.org/3557010

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5605 ce2b1a6d-e550-0410-aec6-3dcde31c8c00