8000 gh-125716: Use A Global Mutex When Initializing Global State For The _interpqueues Module by ericsnowcurrently · Pull Request #125803 · python/cpython · GitHub
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gh-125716: Use A Global Mutex When Initializing Global State For The _interpqueues Module #125803

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Merged
merged 10 commits into from
Oct 21, 2024
Merged

gh-125716: Use A Global Mutex When Initializing Global State For The _interpqueues Module #125803

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7d8b9f9
Raise an exception if _globals_init() fails.
ericsnowcurrently Oct 18, 2024
2579a3a
Free the mutex in _globals_fini().
ericsnowcurrently Oct 21, 2024
98d2a7d
Use atomic operations for the module count.
ericsnowcurrently Oct 21, 2024
8921291
Check the mutex in queues/channels_init().
ericsnowcurrently Oct 21, 2024
202b75d
Use a static initializer init queues/channels_init()/_fini().
ericsnowcurrently Oct 21, 2024
2822ada
Use a global lock around _globals_init() and _globals_fini().
ericsnowcurrently Oct 21, 2024
27fcb3c
Update the summary of global state.
ericsnowcurrently Oct 21, 2024
cf4e106
Change an incref to a decref.
ericsnowcurrently Oct 21, 2024
9c4c1f2
Decrement the module count if _globals_init() fails.
ericsnowcurrently Oct 21, 2024
3714bbf
Merge branch 'main' into fix-queues-null-mutex
ericsnowcurrently Oct 21, 2024
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Decrement the module count if _globals_init() fails.
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@ericsnowcurrently
ericsnowcurrently committed Oct 21, 2024
commit 9c4c1f2adefebd48afc9243f3b2e15a4cacda48f
1 change: 1 addition & 0 deletions Modules/_interpchannelsmodule.c
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Expand Up @@ -2836,6 +2836,7 @@ _globals_init(void)
// Called for the first time.
PyThread_type_lock mutex = PyThread_allocate_lock();
if (mutex == NULL) {
_globals.module_count--;
PyMutex_Unlock(&_globals.mutex);
return ERR_CHANNELS_MUTEX_INIT;
}
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1 change: 1 addition & 0 deletions Modules/_interpqueuesmodule.c
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Expand Up @@ -1416,6 +1416,7 @@ _globals_init(void)
// Called for the first time.
PyThread_type_lock mutex = PyThread_allocate_lock();
if (mutex == NULL) {
_globals.module_count--;
PyMutex_Unlock(&_globals.mutex);
return ERR_QUEUES_ALLOC;
}
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0