Mercurial > cpython-lru_cache-weakref
view Python/thread_foobar.h @ 33940:dfd07b7be407 legacy-trunk
SF bug 1061968: threads: segfault or Py_FatalError at exit
PyGILState_Ensure(): The fix in 2.4a3 for bug 1010677 reintroduced thread
shutdown race bug 225673. Repaired by (once again) ensuring the GIL is
held whenever deleting a thread state.
Alas, there's no useful test case for this shy bug. Four years ago, only
Guido could provoke it, on his box, and today only Armin can provoke it
on his box. I've never been able to provoke it (but not for lack of
trying!).
This is a critical fix for 2.3.5 too, since the fix for 1010677 got
backported there already and so also reintroduced 225673. I don't intend to
backport this fix. For whoever (if anyone) does, there are other thread
fixes in 2.4 that need backporting too, and I bet they need to happen first
for this patch to apply cleanly.
| author | Tim Peters <tim.peters@gmail.com> |
|---|---|
| date | Mon, 08 Nov 2004 04:30:21 +0000 |
| parents | 8b116a8449bd |
| children | e38335d4df91 df5719c298db |
line wrap: on
line source
/* * Initialization. */ static void PyThread__init_thread(void) { } /* * Thread support. */ long PyThread_start_new_thread(void (*func)(void *), void *arg) { int success = 0; /* init not needed when SOLARIS_THREADS and */ /* C_THREADS implemented properly */ dprintf(("PyThread_start_new_thread called\n")); if (!initialized) PyThread_init_thread(); return success < 0 ? -1 : 0; } long PyThread_get_thread_ident(void) { if (!initialized) PyThread_init_thread(); } static void do_PyThread_exit_thread(int no_cleanup) { dprintf(("PyThread_exit_thread called\n")); if (!initialized) if (no_cleanup) _exit(0); else exit(0); } void PyThread_exit_thread(void) { do_PyThread_exit_thread(0); } void PyThread__exit_thread(void) { do_PyThread_exit_thread(1); } #ifndef NO_EXIT_PROG static void do_PyThread_exit_prog(int status, int no_cleanup) { dprintf(("PyThread_exit_prog(%d) called\n", status)); if (!initialized) if (no_cleanup) _exit(status); else exit(status); } void PyThread_exit_prog(int status) { do_PyThread_exit_prog(status, 0); } void PyThread__exit_prog(int status) { do_PyThread_exit_prog(status, 1); } #endif /* NO_EXIT_PROG */ /* * Lock support. */ PyThread_type_lock PyThread_allocate_lock(void) { dprintf(("PyThread_allocate_lock called\n")); if (!initialized) PyThread_init_thread(); dprintf(("PyThread_allocate_lock() -> %p\n", lock)); return (PyThread_type_lock) lock; } void PyThread_free_lock(PyThread_type_lock lock) { dprintf(("PyThread_free_lock(%p) called\n", lock)); } int PyThread_acquire_lock(PyThread_type_lock lock, int waitflag) { int success; dprintf(("PyThread_acquire_lock(%p, %d) called\n", lock, waitflag)); dprintf(("PyThread_acquire_lock(%p, %d) -> %d\n", lock, waitflag, success)); return success; } void PyThread_release_lock(PyThread_type_lock lock) { dprintf(("PyThread_release_lock(%p) called\n", lock)); }
