nptl/pthread_attr_setstack.c

   1 /* Copyright (C) 2002-2015 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   int ret = check_stacksize_attr (stacksize);
  43   if (ret)
  44     return ret;
  45
  46 #ifdef EXTRA_PARAM_CHECKS
  47   EXTRA_PARAM_CHECKS;
  48 #endif
  49
  50   iattr->stacksize = stacksize;
  51 #if _STACK_GROWS_DOWN
  52   iattr->stackaddr = (char *) stackaddr + stacksize;
  53 #else
  54   iattr->stackaddr = (char *) stackaddr;
  55 #endif
  56   iattr->flags |= ATTR_FLAG_STACKADDR;
  57
  58   return 0;
  59 }
  60
  61 #if PTHREAD_STACK_MIN == 16384
  62 strong_alias (__pthread_attr_setstack, pthread_attr_setstack)
  63 #else
  64 # include <shlib-compat.h>
  65 versioned_symbol (libpthread, __pthread_attr_setstack, pthread_attr_setstack,
  66                   NEW_VERNUM);
  67
  68 # if SHLIB_COMPAT(libpthread, GLIBC_2_2, NEW_VERNUM)
  69
  70 int
  71 __old_pthread_attr_setstack (pthread_attr_t *attr, void *stackaddr,
  72                              size_t stacksize)
  73 {
  74   struct pthread_attr *iattr;
  75
  76   assert (sizeof (*attr) >= sizeof (struct pthread_attr));
  77   iattr = (struct pthread_attr *) attr;
  78
  79   /* Catch invalid sizes.  */
  80   if (stacksize < 16384)
  81     return EINVAL;
  82
  83 #  ifdef EXTRA_PARAM_CHECKS
  84   EXTRA_PARAM_CHECKS;
  85 #  endif
  86
  87   iattr->stacksize = stacksize;
  88 #if _STACK_GROWS_DOWN
  89   iattr->stackaddr = (char *) stackaddr + stacksize;
  90 #else
  91   iattr->stackaddr = (char *) stackaddr;
  92 #endif
  93   iattr->flags |= ATTR_FLAG_STACKADDR;
  94
  95   return 0;
  96 }
  97
  98 compat_symbol (libpthread, __old_pthread_attr_setstack, pthread_attr_setstack,
  99                GLIBC_2_2);
 100 # endif
 101
 102 #endif