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, 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 #ifndef NEW_VERNUM
  27 # define NEW_VERNUM GLIBC_2_3_3
  28 #endif
  29
  30
  31 int
  32 __pthread_attr_setstack (attr, stackaddr, stacksize)
  33      pthread_attr_t *attr;
  34      void *stackaddr;
  35      size_t stacksize;
  36 {
  37   struct pthread_attr *iattr;
  38
  39   assert (sizeof (*attr) >= sizeof (struct pthread_attr));
  40   iattr = (struct pthread_attr *) attr;
  41
  42   /* Catch invalid sizes.  */
  43   if (stacksize < PTHREAD_STACK_MIN)
  44     return EINVAL;
  45
  46 #ifdef EXTRA_PARAM_CHECKS
  47   EXTRA_PARAM_CHECKS;
  48 #endif
  49
  50   iattr->stacksize = stacksize;
  51   iattr->stackaddr = (char *) stackaddr + stacksize;
  52   iattr->flags |= ATTR_FLAG_STACKADDR;
  53
  54   return 0;
  55 }
  56
  57 #if PTHREAD_STACK_MIN == 16384
  58 strong_alias (__pthread_attr_setstack, pthread_attr_setstack)
  59 #else
  60 # include <shlib-compat.h>
  61 versioned_symbol (libpthread, __pthread_attr_setstack, pthread_attr_setstack,
  62                   NEW_VERNUM);
  63
  64 # if SHLIB_COMPAT(libpthread, GLIBC_2_2, NEW_VERNUM)
  65
  66 int
  67 __old_pthread_attr_setstack (pthread_attr_t *attr, void *stackaddr,
  68                              size_t stacksize)
  69 {
  70   struct pthread_attr *iattr;
  71
  72   assert (sizeof (*attr) >= sizeof (struct pthread_attr));
  73   iattr = (struct pthread_attr *) attr;
  74
  75   /* Catch invalid sizes.  */
  76   if (stacksize < 16384)
  77     return EINVAL;
  78
  79 #  ifdef EXTRA_PARAM_CHECKS
  80   EXTRA_PARAM_CHECKS;
  81 #  endif
  82
  83   iattr->stacksize = stacksize;
  84   iattr->stackaddr = (char *) stackaddr + stacksize;
  85   iattr->flags |= ATTR_FLAG_STACKADDR;
  86
  87   return 0;
  88 }
  89
  90 compat_symbol (libpthread, __old_pthread_attr_setstack, pthread_attr_setstack,
  91                GLIBC_2_2);
  92 # endif
  93
  94 #endif