src/gallium/tests/unit/pipe_barrier_test.c

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  27
  28
  29 /*
  30  *  Test case for pipe_barrier.
  31  *
  32  *  The test succeeds if no thread exits before all the other threads reach
  33  *  the barrier.
  34  */
  35
  36
  37 #include <stdio.h>
  38
  39 #include "os/os_thread.h"
  40 #include "os/os_time.h"
  41
  42
  43 #define NUM_THREADS 10
  44
  45 static pipe_thread threads[NUM_THREADS];
  46 static pipe_barrier barrier;
  47 static int thread_ids[NUM_THREADS];
  48
  49
  50 static PIPE_THREAD_ROUTINE(thread_function, thread_data)
  51 {
  52    int thread_id = *((int *) thread_data);
  53
  54    printf("thread %d starting\n", thread_id);
  55    os_time_sleep(thread_id * 1000 * 1000);
  56    printf("thread %d before barrier\n", thread_id);
  57    pipe_barrier_wait(&barrier);
  58    printf("thread %d exiting\n", thread_id);
  59
  60    return NULL;
  61 }
  62
  63
  64 int main()
  65 {
  66    int i;
  67
  68    printf("pipe_barrier_test starting\n");
  69
  70    pipe_barrier_init(&barrier, NUM_THREADS);
  71
  72    for (i = 0; i < NUM_THREADS; i++) {
  73       thread_ids[i] = i;
  74       threads[i] = pipe_thread_create(thread_function, (void *) &thread_ids[i]);
  75    }
  76
  77    for (i = 0; i < NUM_THREADS; i++ ) {
  78       pipe_thread_wait(threads[i]);
  79    }
  80
  81    pipe_barrier_destroy(&barrier);
  82
  83    printf("pipe_barrier_test exiting\n");
  84
  85    return 0;
  86 }