#include <unistd.h>
#include <stdlib.h>
#include <fcntl.h>
+#include <time.h>
#include <pthread.h>
#include <sys/mman.h>
#include "log.h"
#include "mutex.h"
#include "arch/arch.h"
+#include "os/os.h"
void fio_mutex_remove(struct fio_mutex *mutex)
{
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) {
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);
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);