nptl/pthread_attr_setstack.c

   1 /* Copyright (C) 2002, 2003 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, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 #include <assert.h>
  21 #include <errno.h>
  22 #include <limits.h>
  23 #include "pthreadP.h"
  24
  25
  26 int
  27 __pthread_attr_setstack (attr, stackaddr, stacksize)
  28      pthread_attr_t *attr;
  29      void *stackaddr;
  30      size_t stacksize;
  31 {
  32   struct pthread_attr *iattr;
  33
  34   assert (sizeof (*attr) >= sizeof (struct pthread_attr));
  35   iattr = (struct pthread_attr *) attr;
  36
  37   /* Catch invalid sizes.  */
  38   if (stacksize < PTHREAD_STACK_MIN)
  39     return EINVAL;
  40
  41 #ifdef EXTRA_PARAM_CHECKS
  42   EXTRA_PARAM_CHECKS;
  43 #endif
  44
  45   iattr->stacksize = stacksize;
  46   iattr->stackaddr = (char *) stackaddr + stacksize;
  47   iattr->flags |= ATTR_FLAG_STACKADDR;
  48
  49   return 0;
  50 }
  51
  52 #if PTHREAD_STACK_MIN == 16384
  53 strong_alias (__pthread_attr_setstack, pthread_attr_setstack)
  54 #else
  55 # include <shlib-compat.h>
  56 versioned_symbol (libpthread, __pthread_attr_setstack, pthread_attr_setstack,
  57                   GLIBC_2_3_3);
  58
  59 # if SHLIB_COMPAT(libpthread, GLIBC_2_2, GLIBC_2_3_3)
  60
  61 int
  62 __old_pthread_attr_setstack (pthread_attr_t *attr, void *stackaddr,
  63                              size_t stacksize)
  64 {
  65   struct pthread_attr *iattr;
  66
  67   assert (sizeof (*attr) >= sizeof (struct pthread_attr));
  68   iattr = (struct pthread_attr *) attr;
  69
  70   /* Catch invalid sizes.  */
  71   if (stacksize < 16384)
  72     return EINVAL;
  73
  74 # ifdef EXTRA_PARAM_CHECKS
  75   EXTRA_PARAM_CHECKS;
  76 # endif
  77
  78   iattr->stacksize = stacksize;
  79   iattr->stackaddr = (char *) stackaddr + stacksize;
  80   iattr->flags |= ATTR_FLAG_STACKADDR;
  81
  82   return 0;
  83 }
  84
  85 compat_symbol (libpthread, __old_pthread_attr_setstack, pthread_attr_setstack,
  86                GLIBC_2_2);
  87 # endif
  88
  89 #endif