nptl/tst-stack3.c

   1 /* Copyright (C) 2003-2017 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 /* Test whether pthread_create/pthread_join with user defined stacks
  20    doesn't leak memory.
  21    NOTE: this tests functionality beyond POSIX.  In POSIX user defined
  22    stacks cannot be ever freed once used by pthread_create nor they can
  23    be reused for other thread.  */
  24
  25 #include <limits.h>
  26 #include <mcheck.h>
  27 #include <pthread.h>
  28 #include <stdlib.h>
  29 #include <stdio.h>
  30 #include <string.h>
  31 #include <unistd.h>
  32
  33 static int seen;
  34
  35 static void *
  36 tf (void *p)
  37 {
  38   ++seen;
  39   return NULL;
  40 }
  41
  42 static int
  43 do_test (void)
  44 {
  45   mtrace ();
  46
  47   void *stack;
  48   int res = posix_memalign (&stack, getpagesize (), 4 * PTHREAD_STACK_MIN);
  49   if (res)
  50     {
  51       printf ("malloc failed %s\n", strerror (res));
  52       return 1;
  53     }
  54
  55   pthread_attr_t attr;
  56   pthread_attr_init (&attr);
  57
  58   int result = 0;
  59   res = pthread_attr_setstack (&attr, stack, 4 * PTHREAD_STACK_MIN);
  60   if (res)
  61     {
  62       printf ("pthread_attr_setstack failed %d\n", res);
  63       result = 1;
  64     }
  65
  66   for (int i = 0; i < 16; ++i)
  67     {
  68       /* Create the thread.  */
  69       pthread_t th;
  70       res = pthread_create (&th, &attr, tf, NULL);
  71       if (res)
  72         {
  73           printf ("pthread_create failed %d\n", res);
  74           result = 1;
  75         }
  76       else
  77         {
  78           res = pthread_join (th, NULL);
  79           if (res)
  80             {
  81               printf ("pthread_join failed %d\n", res);
  82               result = 1;
  83             }
  84         }
  85     }
  86
  87   pthread_attr_destroy (&attr);
  88
  89   if (seen != 16)
  90     {
  91       printf ("seen %d != 16\n", seen);
  92       result = 1;
  93     }
  94
  95   free (stack);
  96   return result;
  97 }
  98
  99 #define TEST_FUNCTION do_test ()
 100 #include "../test-skeleton.c"