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glibc  2.9
tst-cancel13.c
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00001 /* Copyright (C) 2003 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 <errno.h>
00021 #include <pthread.h>
00022 #include <semaphore.h>
00023 #include <stdio.h>
00024 #include <stdlib.h>
00025 #include <string.h>
00026 #include <unistd.h>
00027 
00028 
00029 static pthread_barrier_t bar;
00030 static sem_t sem;
00031 
00032 
00033 static void
00034 cleanup (void *arg)
00035 {
00036   static int ncall;
00037 
00038   if (++ncall != 1)
00039     {
00040       puts ("second call to cleanup");
00041       exit (1);
00042     }
00043 
00044   printf ("cleanup call #%d\n", ncall);
00045 }
00046 
00047 
00048 static void *
00049 tf (void *arg)
00050 {
00051   pthread_cleanup_push (cleanup, NULL);
00052 
00053   int e = pthread_barrier_wait (&bar);
00054   if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
00055     {
00056       puts ("tf: 1st barrier_wait failed");
00057       exit (1);
00058     }
00059 
00060   /* This call should block and be cancelable.  */
00061   sem_wait (&sem);
00062 
00063   pthread_cleanup_pop (0);
00064 
00065   puts ("sem_wait returned");
00066 
00067   return NULL;
00068 }
00069 
00070 
00071 static int
00072 do_test (void)
00073 {
00074   pthread_t th;
00075 
00076   if (pthread_barrier_init (&bar, NULL, 2) != 0)
00077     {
00078       puts ("barrier_init failed");
00079       exit (1);
00080     }
00081 
00082   if (sem_init (&sem, 0, 0) != 0)
00083     {
00084       puts ("sem_init failed");
00085       exit (1);
00086     }
00087 
00088   if (pthread_create (&th, NULL, tf, NULL) != 0)
00089     {
00090       puts ("create failed");
00091       exit (1);
00092     }
00093 
00094   int e = pthread_barrier_wait (&bar);
00095   if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
00096     {
00097       puts ("1st barrier_wait failed");
00098       exit (1);
00099     }
00100 
00101   /* Give the child a chance to go to sleep in sem_wait.  */
00102   sleep (1);
00103 
00104   /* Check whether cancellation is honored when waiting in sem_wait.  */
00105   if (pthread_cancel (th) != 0)
00106     {
00107       puts ("1st cancel failed");
00108       exit (1);
00109     }
00110 
00111   void *r;
00112   if (pthread_join (th, &r) != 0)
00113     {
00114       puts ("join failed");
00115       exit (1);
00116     }
00117 
00118   if (r != PTHREAD_CANCELED)
00119     {
00120       puts ("thread not canceled");
00121       exit (1);
00122     }
00123 
00124   return 0;
00125 }
00126 
00127 
00128 #define TEST_FUNCTION do_test ()
00129 #include "../test-skeleton.c"