allow jsc shell to dump sampling profiler data
https://bugs.webkit.org/show_bug.cgi?id=156725
Reviewed by Benjamin Poulain.
This patch adds a '--reportSamplingProfilerData' option to the
JSC shell which will enable the sampling profiler and dump
its data at the end of execution. The dump will include the
40 hottest functions and the 80 hottest bytecode locations.
If you're using this option to debug, it's easy to just hack
on the code to make it dump more or less information.
* jsc.cpp:
(CommandLine::parseArguments):
(jscmain):
* runtime/Options.h:
* runtime/SamplingProfiler.cpp:
(JSC::SamplingProfiler::processUnverifiedStackTraces):
(JSC::SamplingProfiler::stackTracesAsJSON):
(JSC::SamplingProfiler::reportTopFunctions):
(JSC::SamplingProfiler::reportTopBytecodes):
* runtime/SamplingProfiler.h:
(JSC::SamplingProfiler::StackFrame::hasExpressionInfo):
(JSC::SamplingProfiler::StackFrame::hasBytecodeIndex):
(JSC::SamplingProfiler::StackFrame::hasCodeBlockHash):
(JSC::SamplingProfiler::setStopWatch):
git-svn-id: http://svn.webkit.org/repository/webkit/trunk@199754 268f45cc-cd09-0410-ab3c-d52691b4dbfc
5 files changed
