sysdeps/pthread/tst-cancel3.c

   1 /* Copyright (C) 2002-2024 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 <unistd.h>
  22
  23
  24 static int fd[2];
  25
  26
  27 static void *
  28 tf (void *arg)
  29 {
  30   char buf[100];
  31
  32   if (read (fd[0], buf, sizeof (buf)) == sizeof (buf))
  33     {
  34       puts ("read succeeded");
  35       return (void *) 1l;
  36     }
  37
  38   return NULL;
  39 }
  40
  41
  42 static int
  43 do_test (void)
  44 {
  45   pthread_t th;
  46   void *r;
  47   struct sigaction sa;
  48
  49   sa.sa_handler = SIG_IGN;
  50   sigemptyset (&sa.sa_mask);
  51   sa.sa_flags = 0;
  52
  53   if (sigaction (SIGPIPE, &sa, NULL) != 0)
  54     {
  55       puts ("sigaction failed");
  56       return 1;
  57     }
  58
  59   if (pipe (fd) != 0)
  60     {
  61       puts ("pipe failed");
  62       return 1;
  63     }
  64
  65   if (pthread_create (&th, NULL, tf, NULL) != 0)
  66     {
  67       puts ("create failed");
  68       return 1;
  69     }
  70
  71   if (pthread_cancel (th) != 0)
  72     {
  73       puts ("cancel failed");
  74       return 1;
  75     }
  76
  77   /* This will cause the read in the child to return.  */
  78   close (fd[0]);
  79
  80   if (pthread_join (th, &r) != 0)
  81     {
  82       puts ("join failed");
  83       return 1;
  84     }
  85
  86   if (r != PTHREAD_CANCELED)
  87     {
  88       puts ("result is wrong");
  89       return 1;
  90     }
  91
  92   return 0;
  93 }
  94
  95 #define TEST_FUNCTION do_test ()
  96 #include "../test-skeleton.c"