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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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Python/instrumentation.c
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@ -1006,13 +1006,10 @@ set_global_version(PyThreadState *tstate, uint32_t version)
#ifdef Py_GIL_DISABLED
// Set the version on all threads in free-threaded builds.
_PyRuntimeState *runtime = &_PyRuntime;
HEAD_LOCK(runtime);
for (tstate = interp->threads.head; tstate;
tstate = PyThreadState_Next(tstate)) {
_Py_FOR_EACH_TSTATE_BEGIN(interp, tstate) {
set_version_raw(&tstate->eval_breaker, version);
};
HEAD_UNLOCK(runtime);
_Py_FOR_EACH_TSTATE_END(interp);
#else
// Normal builds take the current version from instrumentation_version when
// attaching a thread, so we only have to set the current thread's version.