1 #ifndef FIO_MUTEX_H 2 #define FIO_MUTEX_H 3 4 #include <pthread.h> 5 6 #define FIO_MUTEX_MAGIC 0x4d555445U 7 #define FIO_RWLOCK_MAGIC 0x52574c4fU 8 9 struct fio_mutex { 10 pthread_mutex_t lock; 11 pthread_cond_t cond; 12 int value; 13 int waiters; 14 int magic; 15 }; 16 17 struct fio_rwlock { 18 pthread_rwlock_t lock; 19 int magic; 20 }; 21 22 enum { 23 FIO_MUTEX_LOCKED = 0, 24 FIO_MUTEX_UNLOCKED = 1, 25 }; 26 27 extern int __fio_mutex_init(struct fio_mutex *, int); 28 extern struct fio_mutex *fio_mutex_init(int); 29 extern void fio_mutex_remove(struct fio_mutex *); 30 extern void fio_mutex_up(struct fio_mutex *); 31 extern void fio_mutex_down(struct fio_mutex *); 32 extern int fio_mutex_down_trylock(struct fio_mutex *); 33 extern int fio_mutex_down_timeout(struct fio_mutex *, unsigned int); 34 35 extern void fio_rwlock_read(struct fio_rwlock *); 36 extern void fio_rwlock_write(struct fio_rwlock *); 37 extern void fio_rwlock_unlock(struct fio_rwlock *); 38 extern struct fio_rwlock *fio_rwlock_init(void); 39 extern void fio_rwlock_remove(struct fio_rwlock *); 40 41 #endif 42
