#include <unistd.h>
#include <stdlib.h>
#include <fcntl.h>
+#include <time.h>
#include <pthread.h>
#include <sys/mman.h>
#include "mutex.h"
#include "arch/arch.h"
#include "os/os.h"
+#include "helpers.h"
void fio_mutex_remove(struct fio_mutex *mutex)
{
return NULL;
}
+#ifdef FIO_HAVE_FALLOCATE
+ ret = posix_fallocate(fd, 0, sizeof(struct fio_mutex));
+ if (ret > 0) {
+ fprintf(stderr, "posix_fallocate mutex failed: %s\n", strerror(ret));
+ goto err;
+ }
+#endif
+
if (ftruncate(fd, sizeof(struct fio_mutex)) < 0) {
perror("ftruncate mutex");
goto err;
log_err("pthread_mutexattr_init: %s\n", strerror(ret));
goto err;
}
+#ifdef FIO_HAVE_PSHARED_MUTEX
ret = pthread_mutexattr_setpshared(&attr, mflag);
if (ret) {
log_err("pthread_mutexattr_setpshared: %s\n", strerror(ret));
goto err;
}
+#endif
pthread_condattr_init(&cond);
+#ifdef FIO_HAVE_PSHARED_MUTEX
pthread_condattr_setpshared(&cond, mflag);
+#endif
pthread_cond_init(&mutex->cond, &cond);
ret = pthread_mutex_init(&mutex->lock, &attr);
return NULL;
}
+int fio_mutex_down_timeout(struct fio_mutex *mutex, unsigned int seconds)
+{
+ struct timespec t;
+ int ret = 0;
+
+ clock_gettime(CLOCK_REALTIME, &t);
+ t.tv_sec += seconds;
+
+ pthread_mutex_lock(&mutex->lock);
+
+ while (!mutex->value && !ret) {
+ mutex->waiters++;
+ ret = pthread_cond_timedwait(&mutex->cond, &mutex->lock, &t);
+ mutex->waiters--;
+ }
+
+ if (!ret) {
+ mutex->value--;
+ pthread_mutex_unlock(&mutex->lock);
+ }
+
+ return ret;
+}
+
void fio_mutex_down(struct fio_mutex *mutex)
{
pthread_mutex_lock(&mutex->lock);