#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)
{
close(mutex->mutex_fd);
- munmap(mutex, sizeof(*mutex));
+ munmap((void *) mutex, sizeof(*mutex));
}
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, mflag;
fd = mkstemp(mutex_name);
if (fd < 0) {
goto err;
}
- mutex = mmap(NULL, sizeof(struct fio_mutex), PROT_READ | PROT_WRITE,
- MAP_SHARED, fd, 0);
+ mutex = (void *) mmap(NULL, sizeof(struct fio_mutex),
+ PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
if (mutex == MAP_FAILED) {
perror("mmap mutex");
close(fd);
mutex->mutex_fd = fd;
mutex->value = value;
- if (pthread_mutexattr_init(&attr)) {
- perror("pthread_mutexattr_init");
+ /*
+ * 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;
}
- if (pthread_mutexattr_setpshared(&attr, PTHREAD_PROCESS_SHARED)) {
- perror("pthread_mutexattr_setpshared");
+ 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);
- if (pthread_mutex_init(&mutex->lock, &attr)) {
- perror("pthread_mutex_init");
+ ret = pthread_mutex_init(&mutex->lock, &attr);
+ if (ret) {
+ log_err("pthread_mutex_init: %s\n", strerror(ret));
goto err;
}
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);