net: fix accidental overwrite of more than just the address
[fio.git] / mutex.h
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1#ifndef FIO_MUTEX_H
2#define FIO_MUTEX_H
3
4#include <pthread.h>
5
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6#define FIO_MUTEX_MAGIC 0x4d555445U
7#define FIO_RWLOCK_MAGIC 0x52574c4fU
8
cdd18ad8 9struct fio_mutex {
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10 pthread_mutex_t lock;
11 pthread_cond_t cond;
64d4d313 12 int value;
4d4e80f2 13 int waiters;
8b4e954c 14 int magic;
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15};
16
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17struct fio_rwlock {
18 pthread_rwlock_t lock;
8b4e954c 19 int magic;
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20};
21
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22enum {
23 FIO_MUTEX_LOCKED = 0,
24 FIO_MUTEX_UNLOCKED = 1,
25};
26
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27extern struct fio_mutex *fio_mutex_init(int);
28extern void fio_mutex_remove(struct fio_mutex *);
d7df1d13 29extern void fio_mutex_up(struct fio_mutex *);
af4bab56 30extern void fio_mutex_down(struct fio_mutex *);
656b1393 31extern int fio_mutex_down_timeout(struct fio_mutex *, unsigned int);
9c5b5290 32
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33extern void fio_rwlock_read(struct fio_rwlock *);
34extern void fio_rwlock_write(struct fio_rwlock *);
35extern void fio_rwlock_unlock(struct fio_rwlock *);
36extern struct fio_rwlock *fio_rwlock_init(void);
37extern void fio_rwlock_remove(struct fio_rwlock *);
4d4e80f2 38
07739b57 39#endif