linuxrwlocks/linuxrwlocks.h

   1 #ifndef _LINUXRWLOCKS_H
   2 #define _LINUXRWLOCKS_H
   3
   4 #include <stdio.h>
   5 #include <threads.h>
   6 #include <stdatomic.h>
   7
   8 #include "librace.h"
   9
  10 #define RW_LOCK_BIAS            0x00100000
  11 #define WRITE_LOCK_CMP          RW_LOCK_BIAS
  12
  13 typedef union {
  14         atomic_int lock;
  15 } rwlock_t;
  16
  17
  18 int read_can_lock(rwlock_t *lock);
  19
  20 int write_can_lock(rwlock_t *lock);
  21
  22 void read_lock(rwlock_t *rw);
  23
  24 void write_lock(rwlock_t *rw);
  25
  26 int read_trylock(rwlock_t *rw);
  27
  28 int write_trylock(rwlock_t *rw);
  29
  30 void read_unlock(rwlock_t *rw);
  31
  32 void write_unlock(rwlock_t *rw);
  33
  34 #endif