include/locks.h

   1 #pragma once
   2
   3 struct lock_struct {
   4         volatile unsigned char lock;
   5         pid_t owner;
   6         unsigned long contention;
   7 };
   8
   9 typedef struct lock_struct lock_t;
  10
  11 #define UNLOCKED 0
  12 #define LOCKED 1
  13
  14 void lock(lock_t *_lock);
  15 void unlock(lock_t *_lock);