+static bool mutex_timed_out(struct timeval *t, unsigned int msecs)
+{
+ struct timeval now;
+
+ gettimeofday(&now, NULL);
+ return mtime_since(t, &now) >= msecs;
+}
+
+int fio_mutex_down_timeout(struct fio_mutex *mutex, unsigned int msecs)
+{
+ struct timeval tv_s;
+ struct timespec t;
+ int ret = 0;
+
+ assert(mutex->magic == FIO_MUTEX_MAGIC);
+
+ gettimeofday(&tv_s, NULL);
+ t.tv_sec = tv_s.tv_sec;
+ t.tv_nsec = tv_s.tv_usec * 1000;
+
+ t.tv_sec += msecs / 1000;
+ t.tv_nsec += ((msecs * 1000000) % 1000000000);
+ if (t.tv_nsec >= 1000000000) {
+ t.tv_nsec -= 1000000000;
+ t.tv_sec++;
+ }
+
+ pthread_mutex_lock(&mutex->lock);
+
+ mutex->waiters++;
+ while (!mutex->value && !ret) {
+ /*
+ * Some platforms (FreeBSD 9?) seems to return timed out
+ * way too early, double check.
+ */
+ ret = pthread_cond_timedwait(&mutex->cond, &mutex->lock, &t);
+ if (ret == ETIMEDOUT && !mutex_timed_out(&tv_s, msecs))
+ ret = 0;
+ }
+ mutex->waiters--;
+
+ if (!ret) {
+ mutex->value--;
+ pthread_mutex_unlock(&mutex->lock);
+ return 0;
+ }
+
+ pthread_mutex_unlock(&mutex->lock);
+ return ret;
+}
+
+bool fio_mutex_down_trylock(struct fio_mutex *mutex)
+{
+ bool ret = true;
+
+ assert(mutex->magic == FIO_MUTEX_MAGIC);
+
+ pthread_mutex_lock(&mutex->lock);
+ if (mutex->value) {
+ mutex->value--;
+ ret = false;
+ }
+ pthread_mutex_unlock(&mutex->lock);
+
+ return ret;
+}
+
+void fio_mutex_down(struct fio_mutex *mutex)
+{
+ assert(mutex->magic == FIO_MUTEX_MAGIC);
+
+ pthread_mutex_lock(&mutex->lock);
+
+ while (!mutex->value) {
+ mutex->waiters++;
+ pthread_cond_wait(&mutex->cond, &mutex->lock);
+ mutex->waiters--;
+ }
+
+ mutex->value--;
+ pthread_mutex_unlock(&mutex->lock);
+}
+
+void fio_mutex_up(struct fio_mutex *mutex)
+{
+ int do_wake = 0;
+
+ assert(mutex->magic == FIO_MUTEX_MAGIC);
+
+ pthread_mutex_lock(&mutex->lock);
+ read_barrier();
+ if (!mutex->value && mutex->waiters)
+ do_wake = 1;
+ mutex->value++;
+ pthread_mutex_unlock(&mutex->lock);
+
+ if (do_wake)
+ pthread_cond_signal(&mutex->cond);
+}
+
+void fio_rwlock_write(struct fio_rwlock *lock)