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Issue #11393: New try to fix faulthandler_thread()

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Always release the cancel join.

Fix also another corner case: _PyFaulthandler_Fini() called after setting
running variable to zero, but before releasing the join lock.
This commit is contained in:
Victor Stinner 2011-04-01 03:00:05 +02:00
parent 1c76b7f5e5
commit a4d4f1b4cb
1 changed files with 6 additions and 6 deletions
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12
Modules/faulthandler.c
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@ -401,7 +401,6 @@ faulthandler_thread(void *unused)
thread.timeout_ms, 0); thread.timeout_ms, 0);
if (st == PY_LOCK_ACQUIRED) { if (st == PY_LOCK_ACQUIRED) {
/* Cancelled by user */ /* Cancelled by user */
PyThread_release_lock(thread.cancel_event);
break; break;
} }
/* Timeout => dump traceback */ /* Timeout => dump traceback */
@ -418,8 +417,9 @@ faulthandler_thread(void *unused)
} while (ok && thread.repeat); } while (ok && thread.repeat);
/* The only way out */ /* The only way out */
thread.running = 0; PyThread_release_lock(thread.cancel_event);
PyThread_release_lock(thread.join_event); PyThread_release_lock(thread.join_event);
thread.running = 0;
} }
static void static void
@ -428,11 +428,11 @@ faulthandler_cancel_dump_tracebacks_later(void)
if (thread.running) { if (thread.running) {
/* Notify cancellation */ /* Notify cancellation */
PyThread_release_lock(thread.cancel_event); PyThread_release_lock(thread.cancel_event);
/* Wait for thread to join */
PyThread_acquire_lock(thread.join_event, 1);
assert(thread.running == 0);
PyThread_release_lock(thread.join_event);
} }
/* Wait for thread to join */
PyThread_acquire_lock(thread.join_event, 1);
assert(thread.running == 0);
PyThread_release_lock(thread.join_event);
Py_CLEAR(thread.file); Py_CLEAR(thread.file);
} }