gh-111964: Add _PyRWMutex a "readers-writer" lock by colesbury · Pull Request #112859

gh-111964: Add _PyRWMutex a "readers-writer" lock by colesbury · Pull Request #112859 · python/cpython

added 2 commits

This adds `_PyRWMutex`, a "readers-writer" lock, which wil be used to
serialize global stop-the-world pauses with per-interpreter pauses.

Also, fix bug where `_PyRWMutex_Lock()` swapped the
return/continue conditions leading to an extra iteration of the loop.

Also describe _PyRWMutex using bit patterns instead of ASCII art box. This
matches how PyMutex is described.

aisk pushed a commit to aisk/cpython that referenced this pull request

)

This adds `_PyRWMutex`, a "readers-writer" lock, which wil be used to
serialize global stop-the-world pauses with per-interpreter pauses.

Glyphack pushed a commit to Glyphack/cpython that referenced this pull request

)

This adds `_PyRWMutex`, a "readers-writer" lock, which wil be used to
serialize global stop-the-world pauses with per-interpreter pauses.