#include "arch/arch.h"
#include "os/os.h"
#include "helpers.h"
-#include "time.h"
+#include "fio_time.h"
#include "gettime.h"
void fio_mutex_remove(struct fio_mutex *mutex)
{
- assert(mutex->magic = FIO_MUTEX_MAGIC);
+ assert(mutex->magic == FIO_MUTEX_MAGIC);
pthread_cond_destroy(&mutex->cond);
munmap((void *) mutex, sizeof(*mutex));
}
-struct fio_mutex *fio_mutex_init(int value)
+int __fio_mutex_init(struct fio_mutex *mutex, int value)
{
- struct fio_mutex *mutex = NULL;
pthread_mutexattr_t attr;
pthread_condattr_t cond;
int ret;
- mutex = (void *) mmap(NULL, sizeof(struct fio_mutex),
- PROT_READ | PROT_WRITE,
- OS_MAP_ANON | MAP_SHARED, -1, 0);
- if (mutex == MAP_FAILED) {
- perror("mmap mutex");
- mutex = NULL;
- goto err;
- }
-
mutex->value = value;
mutex->magic = FIO_MUTEX_MAGIC;
ret = pthread_mutexattr_init(&attr);
if (ret) {
log_err("pthread_mutexattr_init: %s\n", strerror(ret));
- goto err;
+ return ret;
}
/*
ret = pthread_mutexattr_setpshared(&attr, PTHREAD_PROCESS_SHARED);
if (ret) {
log_err("pthread_mutexattr_setpshared: %s\n", strerror(ret));
- goto err;
+ return ret;
}
#endif
ret = pthread_mutex_init(&mutex->lock, &attr);
if (ret) {
log_err("pthread_mutex_init: %s\n", strerror(ret));
- goto err;
+ return ret;
}
pthread_condattr_destroy(&cond);
pthread_mutexattr_destroy(&attr);
+ return 0;
+}
- return mutex;
-err:
- if (mutex)
- fio_mutex_remove(mutex);
+struct fio_mutex *fio_mutex_init(int value)
+{
+ struct fio_mutex *mutex = NULL;
+
+ mutex = (void *) mmap(NULL, sizeof(struct fio_mutex),
+ PROT_READ | PROT_WRITE,
+ OS_MAP_ANON | MAP_SHARED, -1, 0);
+ if (mutex == MAP_FAILED) {
+ perror("mmap mutex");
+ return NULL;
+ }
+
+ if (!__fio_mutex_init(mutex, value))
+ return mutex;
+ fio_mutex_remove(mutex);
return NULL;
}
struct timespec t;
int ret = 0;
- assert(mutex->magic = FIO_MUTEX_MAGIC);
+ assert(mutex->magic == FIO_MUTEX_MAGIC);
gettimeofday(&tv_s, NULL);
t.tv_sec = tv_s.tv_sec + seconds;
return ret;
}
+int fio_mutex_down_trylock(struct fio_mutex *mutex)
+{
+ int ret = 1;
+
+ assert(mutex->magic == FIO_MUTEX_MAGIC);
+
+ pthread_mutex_lock(&mutex->lock);
+ if (mutex->value) {
+ mutex->value--;
+ ret = 0;
+ }
+ pthread_mutex_unlock(&mutex->lock);
+
+ return ret;
+}
+
void fio_mutex_down(struct fio_mutex *mutex)
{
- assert(mutex->magic = FIO_MUTEX_MAGIC);
+ assert(mutex->magic == FIO_MUTEX_MAGIC);
pthread_mutex_lock(&mutex->lock);
void fio_mutex_up(struct fio_mutex *mutex)
{
- assert(mutex->magic = FIO_MUTEX_MAGIC);
+ int do_wake = 0;
+
+ assert(mutex->magic == FIO_MUTEX_MAGIC);
pthread_mutex_lock(&mutex->lock);
read_barrier();
if (!mutex->value && mutex->waiters)
- pthread_cond_signal(&mutex->cond);
+ 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)
{
- assert(lock->magic = FIO_RWLOCK_MAGIC);
+ assert(lock->magic == FIO_RWLOCK_MAGIC);
pthread_rwlock_wrlock(&lock->lock);
}
void fio_rwlock_read(struct fio_rwlock *lock)
{
- assert(lock->magic = FIO_RWLOCK_MAGIC);
+ assert(lock->magic == FIO_RWLOCK_MAGIC);
pthread_rwlock_rdlock(&lock->lock);
}
void fio_rwlock_unlock(struct fio_rwlock *lock)
{
- assert(lock->magic = FIO_RWLOCK_MAGIC);
+ assert(lock->magic == FIO_RWLOCK_MAGIC);
pthread_rwlock_unlock(&lock->lock);
}
void fio_rwlock_remove(struct fio_rwlock *lock)
{
- assert(lock->magic = FIO_RWLOCK_MAGIC);
+ assert(lock->magic == FIO_RWLOCK_MAGIC);
munmap((void *) lock, sizeof(*lock));
}
struct fio_rwlock *fio_rwlock_init(void)
{
struct fio_rwlock *lock;
+ pthread_rwlockattr_t attr;
int ret;
lock = (void *) mmap(NULL, sizeof(struct fio_rwlock),
lock->magic = FIO_RWLOCK_MAGIC;
+ ret = pthread_rwlockattr_init(&attr);
+ if (ret) {
+ log_err("pthread_rwlockattr_init: %s\n", strerror(ret));
+ goto err;
+ }
+#ifdef FIO_HAVE_PSHARED_MUTEX
+ ret = pthread_rwlockattr_setpshared(&attr, PTHREAD_PROCESS_SHARED);
+ if (ret) {
+ log_err("pthread_rwlockattr_setpshared: %s\n", strerror(ret));
+ goto destroy_attr;
+ }
+
+ ret = pthread_rwlock_init(&lock->lock, &attr);
+#else
ret = pthread_rwlock_init(&lock->lock, NULL);
+#endif
+
if (ret) {
log_err("pthread_rwlock_init: %s\n", strerror(ret));
- goto err;
+ goto destroy_attr;
}
+ pthread_rwlockattr_destroy(&attr);
+
return lock;
+destroy_attr:
+ pthread_rwlockattr_destroy(&attr);
err:
if (lock)
fio_rwlock_remove(lock);