Enable error checking for the mutex that serializes overlapping I/O

[fio.git] / rate-submit.c

diff --git a/rate-submit.c b/rate-submit.c
index 3bcb5053d8be1b69d6f68906239ceb6a939a2c44..b7b703722bbb102c84e0dbfd1fed7be0b35727e5 100644 (file)
--- a/rate-submit.c
+++ b/rate-submit.c
@@ -4,6 +4,7 @@
  * Copyright (C) 2015 Jens Axboe <axboe@kernel.dk>
  *
  */
+#include <assert.h>
 #include "fio.h"
 #include "ioengines.h"
 #include "lib/getrusage.h"
@@ -11,7 +12,7 @@
 
 static void check_overlap(struct io_u *io_u)
 {
-       int i;
+       int i, res;
        struct thread_data *td;
 
        /*
@@ -26,7 +27,8 @@ static void check_overlap(struct io_u *io_u)
         * IO_U_F_FLIGHT flag is set so that this io_u can be checked by other
         * threads as they assess overlap.
         */
-       pthread_mutex_lock(&overlap_check);
+       res = pthread_mutex_lock(&overlap_check);
+       assert(res == 0);
 
 retry:
        for_each_td(td, i) {
@@ -39,8 +41,10 @@ retry:
                if (!in_flight_overlap(&td->io_u_all, io_u))
                        continue;
 
-               pthread_mutex_unlock(&overlap_check);
-               pthread_mutex_lock(&overlap_check);
+               res = pthread_mutex_unlock(&overlap_check);
+               assert(res == 0);
+               res = pthread_mutex_lock(&overlap_check);
+               assert(res == 0);
                goto retry;
        }
 }