[issue35275] Reading umask (thread-safe)

[STINNER Victor]

STINNER Victor <vstinner at redhat.com> added the comment:

Maybe the Python documentation can be enhanced to document functions which are known to have a side-effect "process-wide" vs "thread-safe" functions. For example, signal.pthread_sigmark() affects the current thread, wheras locale.setlocale() is process-wide.

See "POSIX Safety Concepts" of the glibc:

https://www.gnu.org/software/libc/manual/html_node/POSIX-Safety-Concepts.html#POSIX-Safety-Concepts

Example with setlocale, "MT-Unsafe":

https://www.gnu.org/software/libc/manual/html_node/Setting-the-Locale.html

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nosy: +vstinner

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<https://bugs.python.org/issue35275>
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