sysdeps/pthread/tst-kill1.c

   1 /* Copyright (C) 2003-2022 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <https://www.gnu.org/licenses/>.  */
  17
  18 #include <pthread.h>
  19 #include <signal.h>
  20 #include <stdio.h>
  21 #include <stdlib.h>
  22
  23
  24 static pthread_cond_t c = PTHREAD_COND_INITIALIZER;
  25 static pthread_mutex_t m = PTHREAD_MUTEX_INITIALIZER;
  26 static pthread_barrier_t b;
  27
  28 static void *
  29 tf (void *a)
  30 {
  31   if (pthread_mutex_lock (&m) != 0)
  32     {
  33       puts ("child: mutex_lock failed");
  34       exit (1);
  35     }
  36
  37   int e = pthread_barrier_wait (&b);
  38   if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
  39     {
  40       puts ("child: barrier_wait failed");
  41       exit (1);
  42     }
  43
  44   /* This call should never return.  */
  45   pthread_cond_wait (&c, &m);
  46
  47   return NULL;
  48 }
  49
  50
  51 int
  52 do_test (void)
  53 {
  54   pthread_t th;
  55
  56   if (pthread_barrier_init (&b, NULL, 2) != 0)
  57     {
  58       puts ("barrier_init failed");
  59       exit (1);
  60     }
  61
  62   if (pthread_create (&th, NULL, tf, NULL) != 0)
  63     {
  64       puts ("create failed");
  65       exit (1);
  66     }
  67
  68   int e = pthread_barrier_wait (&b);
  69   if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
  70     {
  71       puts ("barrier_wait failed");
  72       exit (1);
  73     }
  74
  75   if (pthread_mutex_lock (&m) != 0)
  76     {
  77       puts ("mutex_lock failed");
  78       exit (1);
  79     }
  80
  81   /* Send the thread a signal which it doesn't catch and which will
  82      cause the process to terminate.  */
  83   if (pthread_kill (th, SIGUSR1) != 0)
  84     {
  85       puts ("kill failed");
  86       exit (1);
  87     }
  88
  89   /* This call should never return.  */
  90   pthread_join (th, NULL);
  91
  92   return 0;
  93 }
  94
  95
  96 #define EXPECTED_SIGNAL SIGUSR1
  97 #define TEST_FUNCTION do_test ()
  98 #include "../test-skeleton.c"