glibc/sysdeps/pthread/tst-cond9.c

/* Copyright (C) 2003-2022 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <https://www.gnu.org/licenses/>.  */

#include <errno.h>
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <sys/time.h>


static pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
static pthread_mutex_t mut = PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP;


static void *
tf (void *arg)
{
  int err = pthread_cond_wait (&cond, &mut);
  if (err == 0)
    {
      puts ("cond_wait did not fail");
      exit (1);
    }

  if (err != EPERM)
    {
      printf ("cond_wait didn't return EPERM but %d\n", err);
      exit (1);
    }


  /* Current time.  */
  struct timeval tv;
  (void) gettimeofday (&tv, NULL);
  /* +1000 seconds in correct format.  */
  struct timespec ts;
  TIMEVAL_TO_TIMESPEC (&tv, &ts);
  ts.tv_sec += 1000;

  err = pthread_cond_timedwait (&cond, &mut, &ts);
  if (err == 0)
    {
      puts ("cond_timedwait did not fail");
      exit (1);
    }

  if (err != EPERM)
    {
      printf ("cond_timedwait didn't return EPERM but %d\n", err);
      exit (1);
    }

  return (void *) 1l;
}


static int
do_test (void)
{
  pthread_t th;
  int err;

  printf ("&cond = %p\n&mut = %p\n", &cond, &mut);

  err = pthread_cond_wait (&cond, &mut);
  if (err == 0)
    {
      puts ("cond_wait did not fail");
      exit (1);
    }

  if (err != EPERM)
    {
      printf ("cond_wait didn't return EPERM but %d\n", err);
      exit (1);
    }


  /* Current time.  */
  struct timeval tv;
  (void) gettimeofday (&tv, NULL);
  /* +1000 seconds in correct format.  */
  struct timespec ts;
  TIMEVAL_TO_TIMESPEC (&tv, &ts);
  ts.tv_sec += 1000;

  err = pthread_cond_timedwait (&cond, &mut, &ts);
  if (err == 0)
    {
      puts ("cond_timedwait did not fail");
      exit (1);
    }

  if (err != EPERM)
    {
      printf ("cond_timedwait didn't return EPERM but %d\n", err);
      exit (1);
    }

  if (pthread_mutex_lock (&mut) != 0)
    {
      puts ("parent: mutex_lock failed");
      exit (1);
    }

  puts ("creating thread");

  if (pthread_create (&th, NULL, tf, NULL) != 0)
    {
      puts ("create failed");
      exit (1);
    }

  void *r;
  if (pthread_join (th, &r) != 0)
    {
      puts ("join failed");
      exit (1);
    }
  if (r != (void *) 1l)
    {
      puts ("thread has wrong return value");
      exit (1);
    }

  puts ("done");

  return 0;
}


#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"