locks.c

   1 #include <unistd.h>
   2 #include "locks.h"
   3
   4 void acquire(lock_t *lock)
   5 {
   6         while (*lock == LOCKED)
   7                 usleep(1);
   8
   9         *lock = LOCKED;
  10 }
  11
  12 void release(lock_t *lock)
  13 {
  14         *lock = UNLOCKED;
  15 }