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gh-104341: Minor Fixes in the _thread Module #104595

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gh-104341: Minor Fixes in the _thread Module #104595

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c066237
Add struct module_thread.
ericsnowcurrently May 17, 2023
d10a24f
Add module_thread.daemonic.
ericsnowcurrently May 17, 2023
dfcc14f
Add module_thread.status and related helpers.
ericsnowcurrently May 17, 2023
6fca20e
Add struct module_threads.
ericsnowcurrently May 17, 2023
921b1ec
Free bootstate before running PyObject_Call().
ericsnowcurrently May 18, 2023
fcee99e
Drop PyInterpreterState.threads.count.
ericsnowcurrently May 18, 2023
8da0aee
Add a TODO.
ericsnowcurrently May 18, 2023
a7016b2
Drop an unused field.
ericsnowcurrently May 18, 2023
a44c03f
Fix untrack_module_thread().
ericsnowcurrently May 18, 2023
7cca8fa
Fix warnings.
ericsnowcurrently May 18, 2023
d1e770c
Fix module_threads_reinit().
ericsnowcurrently May 18, 2023
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Free bootstate before running PyObject_Call().
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@ericsnowcurrently
ericsnowcurrently committed May 18, 2023
commit 921b1ec9a0ae00a8a60328831c3a09847444ec07
19 changes: 15 additions & 4 deletions Modules/_threadmodule.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1287,27 +1287,38 @@ thread_run(void *boot_raw)
struct bootstate *boot = (struct bootstate *) boot_raw;
struct module_threads *threads = &boot->module_state->threads;
struct module_thread *mt = boot->module_thread;
PyObject *pyfunc = boot->func;
PyObject *pyargs = boot->args;
PyObject *pykwargs = boot->kwargs;

bind_module_thread(threads, mt);

// Run the Python function with the GIL held.
PyEval_AcquireThread(mt->tstate);
// We free the boot state before running pyfunc
// since daemon threads can exit before PyObject_Call() returns.
// We can't do much about leaking pyfunc/pyargs/pykwargs though.
PyMem_Free(boot);

// Run the Python function with the GIL held.
set_module_thread_starting(threads, mt);
PyObject *res = PyObject_Call(boot->func, boot->args, boot->kwargs);
PyObject *res = PyObject_Call(pyfunc, pyargs, pykwargs);
if (res == NULL) {
if (PyErr_ExceptionMatches(PyExc_SystemExit))
/* SystemExit is ignored silently */
PyErr_Clear();
else {
_PyErr_WriteUnraisableMsg("in thread started by", boot->func);
_PyErr_WriteUnraisableMsg("in thread started by", pyfunc);
}
}
else {
Py_DECREF(res);
}
set_module_thread_finished(threads, mt);
thread_bootstate_free(boot);

// Clean up everything we created in thread_PyThread_start_new_thread().
Py_DECREF(pyfunc);
Py_DECREF(pyargs);
Py_XDECREF(pykwargs);
release_module_thread_tstate(threads, mt);
finalize_module_thread(threads, mt);

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