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Issue #13156: _PyGILState_Reinit(): Re-associate the auto thread state with the 

TLS key only if the thread that called fork() had an associated auto thread
state (this might not be the case for example for a thread created outside of
Python calling into a subinterpreter).
This commit is contained in:
Charles-François Natali 2011-11-22 19:51:14 +01:00
parent 221ef67fd6 a233df885b
commit 23b0b9252e
1 changed files with 5 additions and 4 deletions
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9
Python/pystate.c
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@ -592,9 +592,9 @@ _PyGILState_Fini(void)
autoInterpreterState = NULL;
}
/* Reset the TLS key - called by PyOS_AfterFork.
/* Reset the TLS key - called by PyOS_AfterFork().
* This should not be necessary, but some - buggy - pthread implementations
* don't flush TLS on fork, see issue #10517.
* don't reset TLS upon fork(), see issue #10517.
*/
void
_PyGILState_Reinit(void)
@ -604,8 +604,9 @@ _PyGILState_Reinit(void)
if ((autoTLSkey = PyThread_create_key()) == -1)
Py_FatalError("Could not allocate TLS entry");
/* re-associate the current thread state with the new key */
if (PyThread_set_key_value(autoTLSkey, (void *)tstate) < 0)
/* If the thread had an associated auto thread state, reassociate it with
* the new key. */
if (tstate && PyThread_set_key_value(autoTLSkey, (void *)tstate) < 0)
Py_FatalError("Couldn't create autoTLSkey mapping");
}