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bpo-33608: Factor out a private, per-interpreter _Py_AddPendingCall(). (gh-12360)

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This is effectively an un-revert of #11617 and #12024 (reverted in #12159). Portions of those were merged in other PRs (with lower risk) and this represents the remainder. Note that I found 3 different bugs in the original PRs and have fixed them here.
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Eric Snow 2019-04-12 09:18:16 -06:00 • committed by GitHub
parent 44235041f3
commit f13c5c8b94
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11 changed files with 151 additions and 108 deletions
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8
Python/ceval_gil.h
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@ -176,7 +176,7 @@ static void drop_gil(PyThreadState *tstate)
&_PyRuntime.ceval.gil.last_holder)
) == tstate)
{
RESET_GIL_DROP_REQUEST();
RESET_GIL_DROP_REQUEST(tstate->interp);
/* NOTE: if COND_WAIT does not atomically start waiting when
releasing the mutex, another thread can run through, take
the GIL and drop it again, and reset the condition
@ -213,7 +213,7 @@ static void take_gil(PyThreadState *tstate)
if (timed_out &&
_Py_atomic_load_relaxed(&_PyRuntime.ceval.gil.locked) &&
_PyRuntime.ceval.gil.switch_number == saved_switchnum) {
SET_GIL_DROP_REQUEST();
SET_GIL_DROP_REQUEST(tstate->interp);
}
}
_ready:
@ -239,10 +239,10 @@ _ready:
MUTEX_UNLOCK(_PyRuntime.ceval.gil.switch_mutex);
#endif
if (_Py_atomic_load_relaxed(&_PyRuntime.ceval.gil_drop_request)) {
RESET_GIL_DROP_REQUEST();
RESET_GIL_DROP_REQUEST(tstate->interp);
}
if (tstate->async_exc != NULL) {
_PyEval_SignalAsyncExc();
_PyEval_SignalAsyncExc(tstate->interp);
}
MUTEX_UNLOCK(_PyRuntime.ceval.gil.mutex);