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GH-133231: Changes to executor management to support proposed sys._jit module (GH-133287)

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* Track the current executor, not the previous one, on the thread-state. 

* Batch executors for deallocation to avoid having to constantly incref executors; this is an ad-hoc form of deferred reference counting.
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Mark Shannon 2025-05-04 10:05:35 +01:00 • committed by GitHub
parent 1d9406e426
commit ac7d5ba96e
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13 changed files with 176 additions and 54 deletions
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8
Python/pystate.c
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@ -678,6 +678,8 @@ init_interpreter(PyInterpreterState *interp,
interp->sys_trace_initialized = false;
interp->jit = false;
interp->executor_list_head = NULL;
interp->executor_deletion_list_head = NULL;
interp->executor_deletion_list_remaining_capacity = 0;
interp->trace_run_counter = JIT_CLEANUP_THRESHOLD;
if (interp != &runtime->_main_interpreter) {
/* Fix the self-referential, statically initialized fields. */
@ -902,6 +904,10 @@ interpreter_clear(PyInterpreterState *interp, PyThreadState *tstate)
Py_CLEAR(interp->after_forkers_child);
#endif
#ifdef _Py_TIER2
_Py_ClearExecutorDeletionList(interp);
#endif
_PyAST_Fini(interp);
_PyWarnings_Fini(interp);
_PyAtExit_Fini(interp);
@ -1570,7 +1576,7 @@ init_threadstate(_PyThreadStateImpl *_tstate,
tstate->datastack_top = NULL;
tstate->datastack_limit = NULL;
tstate->what_event = -1;
tstate->previous_executor = NULL;
tstate->current_executor = NULL;
tstate->dict_global_version = 0;
_tstate->c_stack_soft_limit = UINTPTR_MAX;