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glibc  2.9
tst-cancel2.c
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00001 /* Copyright (C) 2002 Free Software Foundation, Inc.
00002    This file is part of the GNU C Library.
00003    Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
00004 
00005    The GNU C Library is free software; you can redistribute it and/or
00006    modify it under the terms of the GNU Lesser General Public
00007    License as published by the Free Software Foundation; either
00008    version 2.1 of the License, or (at your option) any later version.
00009 
00010    The GNU C Library is distributed in the hope that it will be useful,
00011    but WITHOUT ANY WARRANTY; without even the implied warranty of
00012    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013    Lesser General Public License for more details.
00014 
00015    You should have received a copy of the GNU Lesser General Public
00016    License along with the GNU C Library; if not, write to the Free
00017    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00018    02111-1307 USA.  */
00019 
00020 #include <pthread.h>
00021 #include <signal.h>
00022 #include <stdio.h>
00023 #include <unistd.h>
00024 
00025 
00026 static int fd[2];
00027 
00028 
00029 static void *
00030 tf (void *arg)
00031 {
00032   /* The buffer size must be larger than the pipe size so that the
00033      write blocks.  */
00034   char buf[100000];
00035 
00036   if (write (fd[1], buf, sizeof (buf)) == sizeof (buf))
00037     {
00038       puts ("write succeeded");
00039       return (void *) 1l;
00040     }
00041 
00042   return (void *) 42l;
00043 }
00044 
00045 
00046 static int
00047 do_test (void)
00048 {
00049   pthread_t th;
00050   void *r;
00051   struct sigaction sa;
00052 
00053   sa.sa_handler = SIG_IGN;
00054   sigemptyset (&sa.sa_mask);
00055   sa.sa_flags = 0;
00056 
00057   if (sigaction (SIGPIPE, &sa, NULL) != 0)
00058     {
00059       puts ("sigaction failed");
00060       return 1;
00061     }
00062 
00063   if (pipe (fd) != 0)
00064     {
00065       puts ("pipe failed");
00066       return 1;
00067     }
00068 
00069   if (pthread_create (&th, NULL, tf, NULL) != 0)
00070     {
00071       puts ("create failed");
00072       return 1;
00073     }
00074 
00075   if (pthread_cancel (th) != 0)
00076     {
00077       puts ("cancel failed");
00078       return 1;
00079     }
00080 
00081   /* This will cause the write in the child to return.  */
00082   close (fd[0]);
00083 
00084   if (pthread_join (th, &r) != 0)
00085     {
00086       puts ("join failed");
00087       return 1;
00088     }
00089 
00090   if (r != PTHREAD_CANCELED)
00091     {
00092       printf ("result is wrong: expected %p, got %p\n", PTHREAD_CANCELED, r);
00093       return 1;
00094     }
00095 
00096   return 0;
00097 }
00098 
00099 #define TEST_FUNCTION do_test ()
00100 #include "../test-skeleton.c"