nptl/tst-stack3.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 /* Test whether pthread_create/pthread_join with user defined stacks
  19    doesn't leak memory.
  20    NOTE: this tests functionality beyond POSIX.  In POSIX user defined
  21    stacks cannot be ever freed once used by pthread_create nor they can
  22    be reused for other thread.  */
  23
  24 #include <limits.h>
  25 #include <mcheck.h>
  26 #include <pthread.h>
  27 #include <stdlib.h>
  28 #include <stdio.h>
  29 #include <string.h>
  30 #include <unistd.h>
  31
  32 static int seen;
  33
  34 static void *
  35 tf (void *p)
  36 {
  37   ++seen;
  38   return NULL;
  39 }
  40
  41 static int
  42 do_test (void)
  43 {
  44   mtrace ();
  45
  46   void *stack;
  47   int res = posix_memalign (&stack, getpagesize (), 4 * PTHREAD_STACK_MIN);
  48   if (res)
  49     {
  50       printf ("malloc failed %s\n", strerror (res));
  51       return 1;
  52     }
  53
  54   pthread_attr_t attr;
  55   pthread_attr_init (&attr);
  56
  57   int result = 0;
  58   res = pthread_attr_setstack (&attr, stack, 4 * PTHREAD_STACK_MIN);
  59   if (res)
  60     {
  61       printf ("pthread_attr_setstack failed %d\n", res);
  62       result = 1;
  63     }
  64
  65   for (int i = 0; i < 16; ++i)
  66     {
  67       /* Create the thread.  */
  68       pthread_t th;
  69       res = pthread_create (&th, &attr, tf, NULL);
  70       if (res)
  71         {
  72           printf ("pthread_create failed %d\n", res);
  73           result = 1;
  74         }
  75       else
  76         {
  77           res = pthread_join (th, NULL);
  78           if (res)
  79             {
  80               printf ("pthread_join failed %d\n", res);
  81               result = 1;
  82             }
  83         }
  84     }
  85
  86   pthread_attr_destroy (&attr);
  87
  88   if (seen != 16)
  89     {
  90       printf ("seen %d != 16\n", seen);
  91       result = 1;
  92     }
  93
  94   free (stack);
  95   return result;
  96 }
  97
  98 #define TEST_FUNCTION do_test ()
  99 #include "../test-skeleton.c"