mingw-w64-libraries/winpthreads/tests/pthread_cond/condvar2_1.c

#define _WIN32_WINNT 0x400

#include "test.h"
#include <sys/timeb.h>

static pthread_cond_t cv;
static pthread_mutex_t mutex;
static struct timespec abstime = { 0, 0 };

enum {
  NUMTHREADS = 30
};

void *
mythread(void * arg)
{
  assert(pthread_mutex_lock(&mutex) == 0);

  assert(pthread_cond_timedwait(&cv, &mutex, &abstime) == ETIMEDOUT);

  assert(pthread_mutex_unlock(&mutex) == 0);

  return arg;
}



int
main()
{
  int i;
  pthread_t t[NUMTHREADS + 1];
  intptr_t result = 0;
  struct _timeb currSysTime;
  const DWORD NANOSEC_PER_MILLISEC = 1000000;

  assert(pthread_cond_init(&cv, NULL) == 0);

  assert(pthread_mutex_init(&mutex, NULL) == 0);

  /* get current system time */
  _ftime(&currSysTime);

  abstime.tv_sec = currSysTime.time;
  abstime.tv_nsec = NANOSEC_PER_MILLISEC * currSysTime.millitm;

  abstime.tv_sec += 5;

  assert(pthread_mutex_lock(&mutex) == 0);

  for (i = 1; i <= NUMTHREADS; i++)
    {
      assert(pthread_create(&t[i], NULL, mythread, ((void *) (size_t) i)) == 0);
    }

  assert(pthread_mutex_unlock(&mutex) == 0);

  for (i = 1; i <= NUMTHREADS; i++)
    {
      assert(pthread_join(t[i], (void **) &result) == 0);
	assert((int)result == i);
    }

  {
  int result = pthread_cond_destroy(&cv);
  if (result != 0)
    {
      fprintf(stderr, "Result = %s\n", error_string[result]);
#if 0
	fprintf(stderr, "\tWaitersBlocked = %ld\n", cv->nWaitersBlocked);
	fprintf(stderr, "\tWaitersGone = %ld\n", cv->nWaitersGone);
	fprintf(stderr, "\tWaitersToUnblock = %ld\n", cv->nWaitersToUnblock);
#endif
	fflush(stderr);
    }
  assert(result == 0);
  }

  return 0;
}