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      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 (at) 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 }
     98