libpthread/nptl/pthread_attr_setstack.c

   1 /* Copyright (C) 2002, 2003, 2006 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
   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 #include <assert.h>
  20 #include <errno.h>
  21 #include <limits.h>
  22 #include "pthreadP.h"
  23
  24
  25 int
  26 __pthread_attr_setstack (
  27      pthread_attr_t *attr,
  28      void *stackaddr,
  29      size_t stacksize)
  30 {
  31   struct pthread_attr *iattr;
  32
  33   assert (sizeof (*attr) >= sizeof (struct pthread_attr));
  34   iattr = (struct pthread_attr *) attr;
  35
  36   /* Catch invalid sizes.  */
  37   if (stacksize < PTHREAD_STACK_MIN)
  38     return EINVAL;
  39
  40 #ifdef EXTRA_PARAM_CHECKS
  41   EXTRA_PARAM_CHECKS;
  42 #endif
  43
  44   iattr->stacksize = stacksize;
  45   iattr->stackaddr = (char *) stackaddr + stacksize;
  46   iattr->flags |= ATTR_FLAG_STACKADDR;
  47
  48   return 0;
  49 }
  50
  51 #if PTHREAD_STACK_MIN == 16384
  52 strong_alias(__pthread_attr_setstack, pthread_attr_setstack)
  53 #else
  54 weak_alias(__pthread_attr_setstack, pthread_attr_setstack)
  55 #endif