[3.11] gh-104372: Cleanup _posixsubprocess make_inheritable for async signal safety gh-104518 #104785
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…c signal safety and no GIL requirement (python#104518) Move all of the Python C API calls into the parent process up front instead of doing PyLong_AsLong and PyErr_Occurred and PyTuple_GET from the post-fork/vfork child process. Much of this was long overdue. We shouldn't have been using PyTuple and PyLong APIs within all of these low level functions anyways. (cherry picked from commit c649df6)
…or async signal safety and no GIL requirement (pythonGH-104518) Move all of the Python C API calls into the parent process up front instead of doing PyLong_AsLong and PyErr_Occurred and PyTuple_GET from the post-fork/vfork child process. Much of this was long overdue. We shouldn't have been using PyTuple and PyLong APIs within all of these low level functions anyways.. (cherry picked from commit c649df6) Co-authored-by: Gregory P. Smith <greg@krypto.org>
Backport of d1732fe to 3.11 from python#104697.
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The AddressSanitizer failure is only reproducable under an Ubuntu 20.04 ci-like-toolchain setup in the default optimized build. Using a --with-pydebug build in that setup, it does not happen. Using more recent compiler (& ASAN?) toolchains such as ubuntu 22.04 and 23.04, it does not happen. regardless, i won't merge until finding a workaround. for CI health purposes alone. |
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Move all of the Python C API calls into the parent process up front
instead of doing PyLong_AsLong and PyErr_Occurred and PyTuple_GET from
the post-fork/vfork child process.
Much of this was long overdue. We shouldn't have been using PyTuple and
PyLong APIs within all of these low level functions anyways.
This is a backport of c649df6 for #104518 and the tiny adjustment in d1732fe #104697.
vfork()until the child processexec()succeeds or fails. #104372