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gerrit-public.fairphone.software / fp2-dev / platform / external / fio / 896cac2a44de3725a6d615914e239cab4f382e1c / . / mutex.h
blob: 7be0ab1b44b7c96fa4d7be645a9ff95cc9e8a0bb [file] [log] [blame]
Jens Axboe07739b52007-03-08 20:25:46 +0100[diff] [blame]1#ifndef FIO_MUTEX_H
2#define FIO_MUTEX_H
3
4#include <pthread.h>
5
Jens Axboecdd18ad2008-02-27 18:58:00 +0100[diff] [blame]6struct fio_mutex {
Jens Axboe07739b52007-03-08 20:25:46 +0100[diff] [blame]7 pthread_mutex_t lock;
8 pthread_cond_t cond;
Jens Axboe64d4d312008-03-03 10:36:27 +0100[diff] [blame]9 int value;
Jens Axboe4d4e80f2008-03-04 10:18:56 +0100[diff] [blame]10 int waiters;
Jens Axboe07739b52007-03-08 20:25:46 +0100[diff] [blame]11
Jens Axboecdd18ad2008-02-27 18:58:00 +0100[diff] [blame]12 int mutex_fd;
Jens Axboe07739b52007-03-08 20:25:46 +0100[diff] [blame]13};
14
Jens Axboecdd18ad2008-02-27 18:58:00 +0100[diff] [blame]15extern struct fio_mutex *fio_mutex_init(int);
16extern void fio_mutex_remove(struct fio_mutex *);
Jens Axboeaf4bab52008-03-01 15:12:48 +0100[diff] [blame]17extern void fio_mutex_down(struct fio_mutex *);
Jens Axboe64d4d312008-03-03 10:36:27 +0100[diff] [blame]18extern void fio_mutex_down_read(struct fio_mutex *);
19extern void fio_mutex_down_write(struct fio_mutex *);
Jens Axboeaf4bab52008-03-01 15:12:48 +0100[diff] [blame]20extern void fio_mutex_up(struct fio_mutex *);
Jens Axboe64d4d312008-03-03 10:36:27 +0100[diff] [blame]21extern void fio_mutex_up_read(struct fio_mutex *);
22extern void fio_mutex_up_write(struct fio_mutex *);
Jens Axboe07739b52007-03-08 20:25:46 +0100[diff] [blame]23
Jens Axboe9c5b5292008-03-03 11:08:19 +0100[diff] [blame]24static inline struct fio_mutex *fio_mutex_rw_init(void)
25{
26 return fio_mutex_init(0);
27}
28
Jens Axboe4d4e80f2008-03-04 10:18:56 +0100[diff] [blame]29static inline int fio_mutex_getval(struct fio_mutex *mutex)
30{
31 return mutex->value;
32}
33
Jens Axboe07739b52007-03-08 20:25:46 +0100[diff] [blame]34#endif