sysdeps/pthread/tst-join14.c

   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>