Only use process shared mutexes on support platforms
On FreeBSD, suggest the use of threads instead.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/mutex.c b/mutex.c
index 7d07218..5beaa08 100644
--- a/mutex.c
+++ b/mutex.c
@@ -22,7 +22,7 @@
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 @@
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);