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glibc  2.9
tst-cancel9.c
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00001 /* Copyright (C) 2003, 2004 Free Software Foundation, Inc.
00002    This file is part of the GNU C Library.
00003    Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
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 <fcntl.h>
00021 #include <pthread.h>
00022 #include <stdio.h>
00023 #include <stdlib.h>
00024 #include <string.h>
00025 #include <unistd.h>
00026 
00027 
00028 static pthread_barrier_t b;
00029 
00030 
00031 static void
00032 cleanup (void *arg)
00033 {
00034   fputs ("in cleanup\n", stdout);
00035 }
00036 
00037 
00038 static void *
00039 tf (void *arg)
00040 {
00041   int fd = open ("/dev/null", O_RDWR);
00042   if (fd == -1)
00043     {
00044       puts ("cannot open /dev/null");
00045       exit (1);
00046     }
00047   FILE *fp = fdopen (fd, "w");
00048   if (fp == NULL)
00049     {
00050       puts ("fdopen failed");
00051       exit (1);
00052     }
00053 
00054   pthread_cleanup_push (cleanup, NULL);
00055 
00056   int e = pthread_barrier_wait (&b);
00057   if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
00058     {
00059       puts ("barrier_wait failed");
00060       exit (1);
00061     }
00062 
00063   while (1)
00064     /* fprintf() uses write() which is a cancallation point.  */
00065     fprintf (fp, "foo");
00066 
00067   pthread_cleanup_pop (0);
00068 
00069   return NULL;
00070 }
00071 
00072 
00073 static int
00074 do_test (void)
00075 {
00076   if (pthread_barrier_init (&b, NULL, 2) != 0)
00077     {
00078       puts ("barrier_init failed");
00079       exit (1);
00080     }
00081 
00082   pthread_t th;
00083   if (pthread_create (&th, NULL, tf, NULL) != 0)
00084     {
00085       puts ("create failed");
00086       return 1;
00087     }
00088 
00089   int e = pthread_barrier_wait (&b);
00090   if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
00091     {
00092       puts ("barrier_wait failed");
00093       exit (1);
00094     }
00095 
00096   sleep (1);
00097 
00098   puts ("cancel now");
00099 
00100   if (pthread_cancel (th) != 0)
00101     {
00102       puts ("cancel failed");
00103       exit (1);
00104     }
00105 
00106   puts ("waiting for the child");
00107 
00108   void *r;
00109   if (pthread_join (th, &r) != 0)
00110     {
00111       puts ("join failed");
00112       exit (1);
00113     }
00114 
00115   if (r != PTHREAD_CANCELED)
00116     {
00117       puts ("thread wasn't canceled");
00118       exit (1);
00119     }
00120 
00121   return 0;
00122 }
00123 
00124 
00125 #define TEST_FUNCTION do_test ()
00126 #include "../test-skeleton.c"