Security-55471.tar.gz

[apple/security.git] / utilities / src / SecDispatchRelease.h

diff --git a/utilities/src/SecDispatchRelease.h b/utilities/src/SecDispatchRelease.h
new file mode 100644 (file)
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--- /dev/null
+++ b/utilities/src/SecDispatchRelease.h
@@ -0,0 +1,58 @@
+//
+//  SecDispatchRelease.h
+//  utilities
+//
+//  Created by Mitch Adler on 11/26/12.
+//  Copyright (c) 2012 Apple Inc. All rights reserved.
+//
+
+
+#ifndef _SECDISPATCHRELEASE_H_
+#define _SECDISPATCHRELEASE_H_
+
+#include <dispatch/dispatch.h>
+#include <xpc/xpc.h>
+
+#define dispatch_retain_safe(DO) {  \
+    __typeof__(DO) _do = (DO);      \
+    if (_do)                        \
+        dispatch_retain(_do);       \
+}
+
+#define dispatch_release_safe(DO) { \
+    __typeof__(DO) _do = (DO);      \
+    if (_do)                        \
+        dispatch_release(_do);      \
+}
+
+#define dispatch_release_null(DO) { \
+    __typeof__(DO) _do = (DO);      \
+    if (_do) {                      \
+        (DO) = NULL;                \
+        dispatch_release(_do);      \
+    }                               \
+}
+
+
+#define xpc_retain_safe(XO) {  \
+    __typeof__(XO) _xo = (XO); \
+    if (_xo)                   \
+        xpc_retain(_xo);       \
+}
+
+#define xpc_release_safe(XO) { \
+    __typeof__(XO) _xo = (XO); \
+    if (_xo)                   \
+        xpc_release(_xo);      \
+}
+
+#define xpc_release_null(XO) {  \
+    __typeof__(XO) _xo = (XO); \
+    if (_xo) {                  \
+        (XO) = NULL;            \
+        xpc_release(_xo);       \
+    }                           \
+}
+
+#endif
+