X-Git-Url: https://git.kernel.dk/?a=blobdiff_plain;f=mutex.h;h=4f3486df7a3b01163515cd548678445d7e40b924;hb=e171fde52d9c2d0247365793d464a2a3c5e3af22;hp=49a66e361bc52ed7c09328578dc4a912ec1c4e83;hpb=d7213923067aa49922962a469a691c3ec951064d;p=fio.git

diff --git a/mutex.h b/mutex.h
index 49a66e36..4f3486df 100644
--- a/mutex.h
+++ b/mutex.h
@@ -3,15 +3,20 @@
 
 #include <pthread.h>
 
+#define FIO_MUTEX_MAGIC		0x4d555445U
+#define FIO_RWLOCK_MAGIC	0x52574c4fU
+
 struct fio_mutex {
 	pthread_mutex_t lock;
 	pthread_cond_t cond;
 	int value;
 	int waiters;
+	int magic;
 };
 
 struct fio_rwlock {
 	pthread_rwlock_t lock;
+	int magic;
 };
 
 enum {