* [Qemu-devel] [PATCH] Avoid multiple inclusion of qemu-lock.h
@ 2009-01-26 21:28 Lionel Landwerlin
0 siblings, 0 replies; only message in thread
From: Lionel Landwerlin @ 2009-01-26 21:28 UTC (permalink / raw)
To: qemu-devel
Avoid multiple inclusion of qemu-lock.h
Signed-off-by: Lionel Landwerlin <lionel.landwerlin@openwide.fr>
diff --git a/qemu-lock.h b/qemu-lock.h
index 26661ba..ce1c466 100644
--- a/qemu-lock.h
+++ b/qemu-lock.h
@@ -24,6 +24,9 @@
likely to release it soon. In environments where you have more threads
than physical CPUs (the extreme case being a single CPU host) a spinlock
simply wastes CPU until the OS decides to preempt it. */
+#ifndef QEMU_LOCK_H
+#define QEMU_LOCK_H
+
#if defined(USE_NPTL)
#include <pthread.h>
@@ -246,3 +249,5 @@ static inline int spin_trylock(spinlock_t *lock)
#endif
#endif
+
+#endif /* QEMU_LOCK_H */
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