mikhail.naganov@gmail.com
508b22c436
"Deiceolate" Thread classes.
...
Thread class was receiving an isolate parameter by default.
This approact violates the assumption that only VM threads
can have an associated isolate, and can lead to troubles,
because accessing the same isolate from different threads
leads to race conditions.
This was found by investigating mysterious failures of the
CPU profiler layout test on Linux Chromium. As almost all
threads were associated with some isolate, the sampler was
trying to sample them.
As a side effect, we have also fixed the DebuggerAgent test.
Thanks to Vitaly for help in fixing isolates handling!
R=vitalyr@chromium.org
BUG=none
TEST=none
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@8259 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2011-06-10 09:54:04 +00:00
mikhail.naganov@gmail.com
47248cc5fe
Revert accidental r8254..r8256
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git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@8257 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2011-06-10 09:42:08 +00:00
mikhail.naganov@gmail.com
6891dd204c
tests compile but crash
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git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@8255 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2011-06-10 09:36:18 +00:00
vitalyr@chromium.org
04537cb227
Use v8::internal threading support in samples/shell.cc.
...
We need this for isolates testing. To make it work I had to extend the
internal Thread constructor with an option to set the stack size (see
the comment in shell.cc).
BUG=1264
Review URL: http://codereview.chromium.org/6711068
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7289 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2011-03-21 15:04:17 +00:00
vitalyr@chromium.org
7976ca2cbc
Merge isolates to bleeding_edge.
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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.
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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
mikhail.naganov@gmail.com
decd0fed78
CPU profiler: make code events handling scalable.
...
I changed the implementation of a queue between the VM and processor
thread to be unbounded and lock-free, using Herb Sutter's example from
DDJ article: http://www.ddj.com/high-performance-computing/210604448
This had brought back profiling overhead to a minimum for the page
from Chromium's issue 16184.
BUG=714
Review URL: http://codereview.chromium.org/2091019
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4706 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2010-05-22 05:27:19 +00:00
mikhail.naganov@gmail.com
71754ebe81
Add multithreading test for SamplingCircularQueue, fix implementation.
...
This is for the case of Linux, where sampling is done using SIGPROF
signal handler which is executed in the context of an interrupted
thread. In this case, my previous implementation with TLS doesn't
work.
Review URL: http://codereview.chromium.org/1138004
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4207 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2010-03-22 14:23:45 +00:00
mikhail.naganov@gmail.com
d2188658ca
Re-apply r4159 now with working test on x64
...
TBR=sgjesse@chromium.org
Review URL: http://codereview.chromium.org/979005
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4164 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2010-03-17 13:15:42 +00:00
fschneider@chromium.org
9f318feb93
Revert r4159 because of x64 test failures.
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Review URL: http://codereview.chromium.org/1049003
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4162 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2010-03-17 13:04:07 +00:00
mikhail.naganov@gmail.com
ce9298029d
Implement circular queues for the C++ version of CPU profiler.
...
Circular queues serve as a transport for communicating between
VM, stack sampler and analyzer threads. Logging requirements
for VM and stack sampler are completely different, that's why
I introduced two different versions of CQs.
Review URL: http://codereview.chromium.org/1047002
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4159 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2010-03-17 12:25:10 +00:00
