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