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-rw-r--r--Modules/overlapped.c15
1 files changed, 12 insertions, 3 deletions
diff --git a/Modules/overlapped.c b/Modules/overlapped.c
index ef77c88..f85e5bc 100644
--- a/Modules/overlapped.c
+++ b/Modules/overlapped.c
@@ -23,6 +23,12 @@
# define T_POINTER T_ULONGLONG
#endif
+/* Compatibility with Python 3.3 */
+#if PY_VERSION_HEX < 0x03040000
+# define PyMem_RawMalloc PyMem_Malloc
+# define PyMem_RawFree PyMem_Free
+#endif
+
#define F_HANDLE F_POINTER
#define F_ULONG_PTR F_POINTER
#define F_DWORD "k"
@@ -238,7 +244,7 @@ PostToQueueCallback(PVOID lpParameter, BOOL TimerOrWaitFired)
PostQueuedCompletionStatus(p->CompletionPort, TimerOrWaitFired,
0, p->Overlapped);
/* ignore possible error! */
- PyMem_Free(p);
+ PyMem_RawFree(p);
}
PyDoc_STRVAR(
@@ -262,7 +268,10 @@ overlapped_RegisterWaitWithQueue(PyObject *self, PyObject *args)
&Milliseconds))
return NULL;
- pdata = PyMem_Malloc(sizeof(struct PostCallbackData));
+ /* Use PyMem_RawMalloc() rather than PyMem_Malloc(), since
+ PostToQueueCallback() will call PyMem_Free() from a new C thread
+ which doesn't hold the GIL. */
+ pdata = PyMem_RawMalloc(sizeof(struct PostCallbackData));
if (pdata == NULL)
return SetFromWindowsErr(0);
@@ -273,7 +282,7 @@ overlapped_RegisterWaitWithQueue(PyObject *self, PyObject *args)
pdata, Milliseconds,
WT_EXECUTEINWAITTHREAD | WT_EXECUTEONLYONCE))
{
- PyMem_Free(pdata);
+ PyMem_RawFree(pdata);
return SetFromWindowsErr(0);
}