native_client_sdk/src/libraries/third_party/pthreads-win32/pthread_attr_setstackaddr.c

   1 /*
   2  * pthread_attr_setstackaddr.c
   3  *
   4  * Description:
   5  * This translation unit implements operations on thread attribute objects.
   6  *
   7  * --------------------------------------------------------------------------
   8  *
   9  *      Pthreads-win32 - POSIX Threads Library for Win32
  10  *      Copyright(C) 1998 John E. Bossom
  11  *      Copyright(C) 1999,2005 Pthreads-win32 contributors
  12  *
  13  *      Contact Email: rpj@callisto.canberra.edu.au
  14  *
  15  *      The current list of contributors is contained
  16  *      in the file CONTRIBUTORS included with the source
  17  *      code distribution. The list can also be seen at the
  18  *      following World Wide Web location:
  19  *      http://sources.redhat.com/pthreads-win32/contributors.html
  20  *
  21  *      This library is free software; you can redistribute it and/or
  22  *      modify it under the terms of the GNU Lesser General Public
  23  *      License as published by the Free Software Foundation; either
  24  *      version 2 of the License, or (at your option) any later version.
  25  *
  26  *      This library is distributed in the hope that it will be useful,
  27  *      but WITHOUT ANY WARRANTY; without even the implied warranty of
  28  *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  29  *      Lesser General Public License for more details.
  30  *
  31  *      You should have received a copy of the GNU Lesser General Public
  32  *      License along with this library in the file COPYING.LIB;
  33  *      if not, write to the Free Software Foundation, Inc.,
  34  *      59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
  35  */
  36
  37 #include "pthread.h"
  38 #include "implement.h"
  39
  40
  41 int
  42 pthread_attr_setstackaddr (pthread_attr_t * attr, void *stackaddr)
  43      /*
  44       * ------------------------------------------------------
  45       * DOCPUBLIC
  46       *      Threads created with 'attr' will run on the stack
  47       *      starting at 'stackaddr'.
  48       *      Stack must be at least PTHREAD_STACK_MIN bytes.
  49       *
  50       * PARAMETERS
  51       *      attr
  52       *              pointer to an instance of pthread_attr_t
  53       *
  54       *      stackaddr
  55       *              the address of the stack to use
  56       *
  57       *
  58       * DESCRIPTION
  59       *      Threads created with 'attr' will run on the stack
  60       *      starting at 'stackaddr'.
  61       *      Stack must be at least PTHREAD_STACK_MIN bytes.
  62       *
  63       *      NOTES:
  64       *              1)      Function supported only if this macro is
  65       *                      defined:
  66       *
  67       *                              _POSIX_THREAD_ATTR_STACKADDR
  68       *
  69       *              2)      Create only one thread for each stack
  70       *                      address..
  71       *
  72       *              3)      Ensure that stackaddr is aligned.
  73       *
  74       * RESULTS
  75       *              0               successfully set stack address,
  76       *              EINVAL          'attr' is invalid
  77       *              ENOSYS          function not supported
  78       *
  79       * ------------------------------------------------------
  80       */
  81 {
  82 #if defined( _POSIX_THREAD_ATTR_STACKADDR )
  83
  84   if (ptw32_is_attr (attr) != 0)
  85     {
  86       return EINVAL;
  87     }
  88
  89   (*attr)->stackaddr = stackaddr;
  90   return 0;
  91
  92 #else
  93
  94   return ENOSYS;
  95
  96 #endif /* _POSIX_THREAD_ATTR_STACKADDR */
  97 }