sysdeps/pthread/tst-cancel11.c

   1 /* Copyright (C) 2003-2024 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 <errno.h>
  19 #include <pthread.h>
  20 #include <stdio.h>
  21 #include <stdlib.h>
  22 #include <string.h>
  23 #include <unistd.h>
  24
  25
  26 static pthread_barrier_t bar;
  27 static int fd[2];
  28
  29
  30 static void
  31 cleanup (void *arg)
  32 {
  33   static int ncall;
  34
  35   if (++ncall != 1)
  36     {
  37       puts ("second call to cleanup");
  38       exit (1);
  39     }
  40
  41   printf ("cleanup call #%d\n", ncall);
  42 }
  43
  44
  45 static void *
  46 tf (void *arg)
  47 {
  48   pthread_cleanup_push (cleanup, NULL);
  49
  50   int e = pthread_barrier_wait (&bar);
  51   if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
  52     {
  53       puts ("tf: 1st barrier_wait failed");
  54       exit (1);
  55     }
  56
  57   /* This call should block and be cancelable.  */
  58   char buf[20];
  59   if (read (fd[0], buf, sizeof (buf)))
  60   {
  61     puts ("read unexpectedly returned");
  62     exit (1);
  63   }
  64
  65   pthread_cleanup_pop (0);
  66
  67   return NULL;
  68 }
  69
  70
  71 static int
  72 do_test (void)
  73 {
  74   pthread_t th;
  75
  76   if (pthread_barrier_init (&bar, NULL, 2) != 0)
  77     {
  78       puts ("barrier_init failed");
  79       exit (1);
  80     }
  81
  82   if (pipe (fd) != 0)
  83     {
  84       puts ("pipe failed");
  85       exit (1);
  86     }
  87
  88   if (pthread_create (&th, NULL, tf, NULL) != 0)
  89     {
  90       puts ("create failed");
  91       exit (1);
  92     }
  93
  94   int e = pthread_barrier_wait (&bar);
  95   if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
  96     {
  97       puts ("1st barrier_wait failed");
  98       exit (1);
  99     }
 100
 101   if (pthread_cancel (th) != 0)
 102     {
 103       puts ("1st cancel failed");
 104       exit (1);
 105     }
 106
 107   void *r;
 108   if (pthread_join (th, &r) != 0)
 109     {
 110       puts ("join failed");
 111       exit (1);
 112     }
 113
 114   if (r != PTHREAD_CANCELED)
 115     {
 116       puts ("thread not canceled");
 117       exit (1);
 118     }
 119
 120   return 0;
 121 }
 122
 123
 124 #define TEST_FUNCTION do_test ()
 125 #include "../test-skeleton.c"