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

   1 /*
   2  * pthread_attr_getstackaddr.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 /* ignore warning "unreferenced formal parameter" */
  41 #if defined(_MSC_VER)
  42 #pragma warning( disable : 4100 )
  43 #endif
  44
  45 int
  46 pthread_attr_getstackaddr (const pthread_attr_t * attr, void **stackaddr)
  47      /*
  48       * ------------------------------------------------------
  49       * DOCPUBLIC
  50       *      This function determines the address of the stack
  51       *      on which threads created with 'attr' will run.
  52       *
  53       * PARAMETERS
  54       *      attr
  55       *              pointer to an instance of pthread_attr_t
  56       *
  57       *      stackaddr
  58       *              pointer into which is returned the stack address.
  59       *
  60       *
  61       * DESCRIPTION
  62       *      This function determines the address of the stack
  63       *      on which threads created with 'attr' will run.
  64       *
  65       *      NOTES:
  66       *              1)      Function supported only if this macro is
  67       *                      defined:
  68       *
  69       *                              _POSIX_THREAD_ATTR_STACKADDR
  70       *
  71       *              2)      Create only one thread for each stack
  72       *                      address..
  73       *
  74       * RESULTS
  75       *              0               successfully retreived 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   *stackaddr = (*attr)->stackaddr;
  90   return 0;
  91
  92 #else
  93
  94   return ENOSYS;
  95
  96 #endif /* _POSIX_THREAD_ATTR_STACKADDR */
  97 }