URL: https://github.com/python/cpython/issues/104530
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Py_HAVE_CONDVARdenotes support for Python condition variable APIs. On Win32, the_PY_EMULATED_WIN_CVmacro exists to allow condition variables to be emulated using Win32 critical section and semaphore APIs.Native Win32 support for condition variables has existed from Windows Vista onwards (courtesy of my friend and fellow ex-MSFT colleague Neill Clift).
An implementation of Python condition variable also exists with
_PY_EMULATED_WIN_CVset to0which uses native Win32 condition variable / SRW lock (mutex) support.Since support for Windows XP was dropped as of Python 3.5, I propose moving to the native Win32 condition variable APIs, as they are more efficient and easier to maintain.
Linked PRs