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      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