Mercurial > cpython-lru_cache-weakref

diff Python/pystate.c @ 82889:2e92d1567ad7

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Issue #17522: Add the PyGILState_Check() API.
author Kristján Valur Jónsson <sweskman@gmail.com>
date Sat, 23 Mar 2013 03:36:16 -0700
parents 800507fb0a7e
children 847692b9902a
line wrap: on
line diff
--- a/Python/pystate.c	Fri Mar 22 13:49:53 2013 -0700
+++ b/Python/pystate.c	Sat Mar 23 03:36:16 2013 -0700
@@ -697,6 +697,15 @@
     return (PyThreadState *)PyThread_get_key_value(autoTLSkey);
 }
 
+int
+PyGILState_Check(void)
+{
+    /* can't use PyThreadState_Get() since it will assert that it has the GIL */
+    PyThreadState *tstate = (PyThreadState*)_Py_atomic_load_relaxed(
+        &_PyThreadState_Current);
+    return tstate && (tstate == PyGILState_GetThisThreadState());
+}
+
 PyGILState_STATE
 PyGILState_Ensure(void)
 {