Rework lockfile= file lock handling

[fio.git] / mutex.h

#ifndef FIO_MUTEX_H
#define FIO_MUTEX_H

#include <pthread.h>

struct fio_mutex {
	pthread_mutex_t lock;
	pthread_cond_t cond;
	int value;
	int waiters;
};

struct fio_rwlock {
	pthread_rwlock_t lock;
};

enum {
	FIO_MUTEX_LOCKED	= 0,
	FIO_MUTEX_UNLOCKED	= 1,
};

extern struct fio_mutex *fio_mutex_init(int);
extern void fio_mutex_remove(struct fio_mutex *);
extern void fio_mutex_up(struct fio_mutex *);
extern void fio_mutex_down(struct fio_mutex *);
extern int fio_mutex_down_timeout(struct fio_mutex *, unsigned int);

extern void fio_rwlock_read(struct fio_rwlock *);
extern void fio_rwlock_write(struct fio_rwlock *);
extern void fio_rwlock_unlock(struct fio_rwlock *);
extern struct fio_rwlock *fio_rwlock_init(void);
extern void fio_rwlock_remove(struct fio_rwlock *);

#endif