none/tests/pth_mutexspeed.c

   1
   2 #include <stdio.h>
   3 #include <assert.h>
   4 #include <pthread.h>
   5
   6 int main ( void )
   7 {
   8    const int n = 100000;
   9    int i, r;
  10    pthread_mutex_t mx = PTHREAD_MUTEX_INITIALIZER;
  11    printf("begin %d lock--unlocks\n", n);
  12    for (i = 0; i < n; i++) {
  13       r =  pthread_mutex_lock(&mx);
  14       r |= pthread_mutex_unlock(&mx);
  15       assert(r == 0);
  16    }
  17    printf("done  %d lock--unlocks\n", n);
  18    return 0;
  19 }