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gh-114940: Add _Py_FOR_EACH_TSTATE_UNLOCKED(), and Friends (gh-127077)

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This is a precursor to the actual fix for gh-114940, where we will change these macros to use the new lock.  This change is almost entirely mechanical; the exceptions are the loops in codeobject.c and ceval.c, which now hold the "head" lock.  Note that almost all of the uses of _Py_FOR_EACH_TSTATE_UNLOCKED() here will change to _Py_FOR_EACH_TSTATE_BEGIN() once we add the new per-interpreter lock.
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Eric Snow 2024-11-21 11:08:38 -07:00 • committed by GitHub
parent bf542f8bb9
commit 9dabace39d
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9 changed files with 79 additions and 87 deletions
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Include/internal/pycore_pystate.h
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@ -269,6 +269,15 @@ extern int _PyOS_InterruptOccurred(PyThreadState *tstate);
#define HEAD_UNLOCK(runtime) \
PyMutex_Unlock(&(runtime)->interpreters.mutex)
#define _Py_FOR_EACH_TSTATE_UNLOCKED(interp, t) \
for (PyThreadState *t = interp->threads.head; t; t = t->next)
#define _Py_FOR_EACH_TSTATE_BEGIN(interp, t) \
HEAD_LOCK(interp->runtime); \
_Py_FOR_EACH_TSTATE_UNLOCKED(interp, t)
#define _Py_FOR_EACH_TSTATE_END(interp) \
HEAD_UNLOCK(interp->runtime)
// Get the configuration of the current interpreter.
// The caller must hold the GIL.
// Export for test_peg_generator.