1  /* pthread_timedjoin_np, pthread_clockjoin_np NULL timeout test.
       2     Copyright (C) 2019-2023 Free Software Foundation, Inc.
       3     This file is part of the GNU C Library.
       4  
       5     The GNU C Library is free software; you can redistribute it and/or
       6     modify it under the terms of the GNU Lesser General Public
       7     License as published by the Free Software Foundation; either
       8     version 2.1 of the License, or (at your option) any later version.
       9  
      10     The GNU C Library is distributed in the hope that it will be useful,
      11     but WITHOUT ANY WARRANTY; without even the implied warranty of
      12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      13     Lesser General Public License for more details.
      14  
      15     You should have received a copy of the GNU Lesser General Public
      16     License along with the GNU C Library; if not, see
      17     <https://www.gnu.org/licenses/>.  */
      18  
      19  #include <errno.h>
      20  #include <pthread.h>
      21  #include <stdio.h>
      22  #include <stdlib.h>
      23  #include <string.h>
      24  #include <sys/time.h>
      25  #include <support/check.h>
      26  #include <support/timespec.h>
      27  #include <support/xthread.h>
      28  #include <support/xtime.h>
      29  
      30  
      31  #define CLOCK_USE_TIMEDJOIN (-1)
      32  
      33  
      34  static void *
      35  tf (void *arg)
      36  {
      37    struct timespec ts = make_timespec(0, 100000);
      38    nanosleep(&ts, NULL);
      39  
      40    return (void *) 42l;
      41  }
      42  
      43  
      44  /* Check that pthread_timedjoin_np and pthread_clockjoin_np wait "forever" if
      45   * passed a timeout parameter of NULL. We can't actually wait forever, but we
      46   * can be sure that we did at least wait for some time by checking the exit
      47   * status of the thread. */
      48  static int
      49  do_test_clock (clockid_t clockid)
      50  {
      51    pthread_t th = xpthread_create (NULL, tf, NULL);
      52  
      53    void *status;
      54    int val = (clockid == CLOCK_USE_TIMEDJOIN)
      55      ? pthread_timedjoin_np (th, &status, NULL)
      56      : pthread_clockjoin_np (th, &status, clockid, NULL);
      57    TEST_COMPARE (val, 0);
      58  
      59    if (status != (void *) 42l)
      60      FAIL_EXIT1 ("return value %p, expected %p\n", status, (void *) 42l);
      61  
      62    return 0;
      63  }
      64  
      65  static int
      66  do_test (void)
      67  {
      68    do_test_clock (CLOCK_USE_TIMEDJOIN);
      69    do_test_clock (CLOCK_REALTIME);
      70    do_test_clock (CLOCK_MONOTONIC);
      71    return 0;
      72  }
      73  
      74  #include <support/test-driver.c>