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| author | Victor Stinner <vstinner@python.org> | 2020-02-01 01:30:25 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2020-02-01 01:30:25 (GMT) |
| commit | 4d96b4635aeff1b8ad41d41422ce808ce0b971c8 (patch) | |
| tree | 841398922264fff5b99548bee68ff70884554040 /Doc/c-api | |
| parent | 7dc140126e918cc7c6e65aea321b7255f0020798 (diff) | |
| download | cpython-4d96b4635aeff1b8ad41d41422ce808ce0b971c8.zip cpython-4d96b4635aeff1b8ad41d41422ce808ce0b971c8.tar.gz cpython-4d96b4635aeff1b8ad41d41422ce808ce0b971c8.tar.bz2 | |
bpo-39511: PyThreadState_Clear() calls on_delete (GH-18296)
PyThreadState.on_delete is a callback used to notify Python when a
thread completes. _thread._set_sentinel() function creates a lock
which is released when the thread completes. It sets on_delete
callback to the internal release_sentinel() function. This lock is
known as Threading._tstate_lock in the threading module.
The release_sentinel() function uses the Python C API. The problem is
that on_delete is called late in the Python finalization, when the C
API is no longer fully working.
The PyThreadState_Clear() function now calls the
PyThreadState.on_delete callback. Previously, that happened in
PyThreadState_Delete().
The release_sentinel() function is now called when the C API is still
fully working.
Diffstat (limited to 'Doc/c-api')
| -rw-r--r-- | Doc/c-api/init.rst | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/Doc/c-api/init.rst b/Doc/c-api/init.rst index 7ea48ae..14049ee 100644 --- a/Doc/c-api/init.rst +++ b/Doc/c-api/init.rst @@ -1048,6 +1048,10 @@ All of the following functions must be called after :c:func:`Py_Initialize`. Reset all information in a thread state object. The global interpreter lock must be held. + .. versionchanged:: 3.9 + This function now calls the :c:member:`PyThreadState.on_delete` callback. + Previously, that happened in :c:func:`PyThreadState_Delete`. + .. c:function:: void PyThreadState_Delete(PyThreadState *tstate) |