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[JSC] Add dumpAndClearSamplingProfilerSamples function · WebKit/WebKit@cc1dd7f ·...

 1 month ago
source link: https://github.com/WebKit/WebKit/commit/cc1dd7f1939dc03e9cf8e606067e3b5e90a78ee9
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[JSC] Add dumpAndClearSamplingProfilerSamples function

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https://bugs.webkit.org/show_bug.cgi?id=259411
rdar://112686960

Reviewed by Justin Michaud.

This patch adds dumpAndClearSamplingProfilerSamples behind a flag, which dumps sampling profiler data into temp file.
This allows us to automated sampling data collection for benchmarks by calling this function at the right timing.
We also significantly expand the JSON data generation of SamplingProfiler to reconstruct enough information from this output.

We also attach display-sampling-profiler-output script as the same to display-profiler-output. Which can feed the above JSON
and dump sampling profiler output.

* Source/JavaScriptCore/runtime/JSGlobalObject.cpp:
(JSC::JSC_DEFINE_HOST_FUNCTION):
(JSC::JSGlobalObject::init):
* Source/JavaScriptCore/runtime/VM.cpp:
(JSC::VM::enableSamplingProfiler):
(JSC::VM::disableSamplingProfiler):
(JSC::VM::takeSamplingProfilerSamplesAsJSONString):
* Source/JavaScriptCore/runtime/VM.h:

Canonical link: https://commits.webkit.org/266270@main
Constellation committed Jul 24, 2023
1 parent e812d68 commit cc1dd7f

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