Fixup handling of pthread_mutex*() error returns

They return the errno, not 0/-1. Thanks to
Fabio Checconi <fabio@gandalf.sssup.it>
for noticing this.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

diff --git a/mutex.c b/mutex.c
index 0f13064af8f26929d3aeac09a22de8331d0e9fa3..7d072186686d21779280cf28fe10d8ed867f5e63 100644 (file)
--- a/mutex.c
+++ b/mutex.c
@@ -6,6 +6,7 @@
 #include <pthread.h>
 #include <sys/mman.h>
 
+#include "log.h"
 #include "mutex.h"
 #include "arch/arch.h"
 
@@ -21,7 +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;
+       int fd, ret;
 
        fd = mkstemp(mutex_name);
        if (fd < 0) {
@@ -47,12 +48,14 @@ struct fio_mutex *fio_mutex_init(int value)
        mutex->mutex_fd = fd;
        mutex->value = value;
 
-       if (pthread_mutexattr_init(&attr) < 0) {
-               perror("pthread_mutexattr_init");
+       ret = pthread_mutexattr_init(&attr);
+       if (ret) {
+               log_err("pthread_mutexattr_init: %s\n", strerror(ret));
                goto err;
        }
-       if (pthread_mutexattr_setpshared(&attr, PTHREAD_PROCESS_SHARED) < 0) {
-               perror("pthread_mutexattr_setpshared");
+       ret = pthread_mutexattr_setpshared(&attr, PTHREAD_PROCESS_SHARED);
+       if (ret) {
+               log_err("pthread_mutexattr_setpshared: %s\n", strerror(ret));
                goto err;
        }
 
@@ -60,8 +63,9 @@ struct fio_mutex *fio_mutex_init(int value)
        pthread_condattr_setpshared(&cond, PTHREAD_PROCESS_SHARED);
        pthread_cond_init(&mutex->cond, &cond);
 
-       if (pthread_mutex_init(&mutex->lock, &attr) < 0) {
-               perror("pthread_mutex_init");
+       ret = pthread_mutex_init(&mutex->lock, &attr);
+       if (ret) {
+               log_err("pthread_mutex_init: %s\n", strerror(ret));
                goto err;
        }