Only use process shared mutexes on support platforms

[fio.git] / mutex.c

diff --git a/mutex.c b/mutex.c
index 7d072186686d21779280cf28fe10d8ed867f5e63..5beaa08f0b921868d36598a6030c23867495cf42 100644 (file)
--- a/mutex.c
+++ b/mutex.c
@@ -22,7 +22,7 @@ struct fio_mutex *fio_mutex_init(int value)
        struct fio_mutex *mutex = NULL;
        pthread_mutexattr_t attr;
        pthread_condattr_t cond;
-       int fd, ret;
+       int fd, ret, mflag;
 
        fd = mkstemp(mutex_name);
        if (fd < 0) {
@@ -48,19 +48,28 @@ struct fio_mutex *fio_mutex_init(int value)
        mutex->mutex_fd = fd;
        mutex->value = value;
 
+       /*
+        * Not all platforms support process shared mutexes (FreeBSD)
+        */
+#ifdef FIO_HAVE_PSHARED_MUTEX
+       mflag = PTHREAD_PROCESS_SHARED;
+#else
+       mflag = PTHREAD_PROCESS_PRIVATE;
+#endif
+
        ret = pthread_mutexattr_init(&attr);
        if (ret) {
                log_err("pthread_mutexattr_init: %s\n", strerror(ret));
                goto err;
        }
-       ret = pthread_mutexattr_setpshared(&attr, PTHREAD_PROCESS_SHARED);
+       ret = pthread_mutexattr_setpshared(&attr, mflag);
        if (ret) {
                log_err("pthread_mutexattr_setpshared: %s\n", strerror(ret));
                goto err;
        }
 
        pthread_condattr_init(&cond);
-       pthread_condattr_setpshared(&cond, PTHREAD_PROCESS_SHARED);
+       pthread_condattr_setpshared(&cond, mflag);
        pthread_cond_init(&mutex->cond, &cond);
 
        ret = pthread_mutex_init(&mutex->lock, &attr);