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Title: gh-136870: fix data races in instrumentation of bytecode by kumaraditya303 · Pull Request #136994 · python/cpython · GitHub

Open Graph Title: gh-136870: fix data races in instrumentation of bytecode by kumaraditya303 · Pull Request #136994 · python/cpython

X Title: gh-136870: fix data races in instrumentation of bytecode by kumaraditya303 · Pull Request #136994 · python/cpython

Description: Issue: gh-136870 De-instrumenting code objects modifies the thread local bytecode for all threads as such, holding the critical section on the code object is not sufficient and leads to data races. In this PR, the de-instrumentation is now performed under a stop the world pause as such no thread races with executing the thread local bytecode while it is being de-instrumented.

Open Graph Description: Issue: gh-136870 De-instrumenting code objects modifies the thread local bytecode for all threads as such, holding the critical section on the code object is not sufficient and leads to data race...

X Description: Issue: gh-136870 De-instrumenting code objects modifies the thread local bytecode for all threads as such, holding the critical section on the code object is not sufficient and leads to data race...

Opengraph URL: https://github.com/python/cpython/pull/136994

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443fc76 fix deinstrumentation kumaraditya303 Jul 23, 2025 https://github.com/python/cpython/pull/136994/commits/443fc768fcf1224c33da178d691987f66a7f45cb
f86569c Merge branch 'main' into instrumentation kumaraditya303 Jul 24, 2025 https://github.com/python/cpython/pull/136994/commits/f86569c71d2b3f74a8baac84a362c67f6595b008
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