X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=mutex.c;h=e1fbb607f1a416fb06a25a611f0f4233c9814357;hp=6022cdd77ef64a67cb77ab13180f33198acea1f3;hb=3fd9efbc3e986697c68975f5ee629040b35e8cd0;hpb=8f801ad5796d850b8ccf15def6b793c3bd2e352d

diff --git a/mutex.c b/mutex.c
index 6022cdd7..e1fbb607 100644
--- a/mutex.c
+++ b/mutex.c
@@ -180,6 +180,7 @@ void fio_rwlock_remove(struct fio_rwlock *lock)
 struct fio_rwlock *fio_rwlock_init(void)
 {
 	struct fio_rwlock *lock;
+	pthread_rwlockattr_t attr;
 	int ret;
 
 	lock = (void *) mmap(NULL, sizeof(struct fio_rwlock),
@@ -193,13 +194,33 @@ struct fio_rwlock *fio_rwlock_init(void)
 
 	lock->magic = FIO_RWLOCK_MAGIC;
 
+	ret = pthread_rwlockattr_init(&attr);
+	if (ret) {
+		log_err("pthread_rwlockattr_init: %s\n", strerror(ret));
+		goto err;
+	}
+#ifdef FIO_HAVE_PSHARED_MUTEX
+	ret = pthread_rwlockattr_setpshared(&attr, PTHREAD_PROCESS_SHARED);
+	if (ret) {
+		log_err("pthread_rwlockattr_setpshared: %s\n", strerror(ret));
+		goto destroy_attr;
+	}
+
+	ret = pthread_rwlock_init(&lock->lock, &attr);
+#else
 	ret = pthread_rwlock_init(&lock->lock, NULL);
+#endif
+
 	if (ret) {
 		log_err("pthread_rwlock_init: %s\n", strerror(ret));
-		goto err;
+		goto destroy_attr;
 	}
 
+	pthread_rwlockattr_destroy(&attr);
+
 	return lock;
+destroy_attr:
+	pthread_rwlockattr_destroy(&attr);
 err:
 	if (lock)
 		fio_rwlock_remove(lock);