gcc/ada/affinity.c

   1 /****************************************************************************
   2  *                                                                          *
   3  *                         GNAT COMPILER COMPONENTS                         *
   4  *                                                                          *
   5  *                             A F F I N I T Y                              *
   6  *                                                                          *
   7  *                          C Implementation File                           *
   8  *                                                                          *
   9  *            Copyright (C) 2005-2011, Free Software Foundation, Inc.       *
  10  *                                                                          *
  11  * GNAT is free software;  you can  redistribute it  and/or modify it under *
  12  * terms of the  GNU General Public License as published  by the Free Soft- *
  13  * ware  Foundation;  either version 3,  or (at your option) any later ver- *
  14  * sion.  GNAT is distributed in the hope that it will be useful, but WITH- *
  15  * OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY *
  16  * or FITNESS FOR A PARTICULAR PURPOSE.                                     *
  17  *                                                                          *
  18  * As a special exception under Section 7 of GPL version 3, you are granted *
  19  * additional permissions described in the GCC Runtime Library Exception,   *
  20  * version 3.1, as published by the Free Software Foundation.               *
  21  *                                                                          *
  22  * You should have received a copy of the GNU General Public License and    *
  23  * a copy of the GCC Runtime Library Exception along with this program;     *
  24  * see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    *
  25  * <http://www.gnu.org/licenses/>.                                          *
  26  *                                                                          *
  27  * GNAT was originally developed  by the GNAT team at  New York University. *
  28  * Extensive contributions were provided by Ada Core Technologies Inc.      *
  29  *                                                                          *
  30  ****************************************************************************/
  31
  32 /* VxWorks SMP CPU affinity */
  33
  34 #include "taskLib.h"
  35 #include "cpuset.h"
  36
  37 extern int __gnat_set_affinity (int tid, unsigned cpu);
  38 extern int __gnat_set_affinity_mask (int tid, unsigned mask);
  39
  40 int
  41  __gnat_set_affinity (int tid, unsigned cpu)
  42 {
  43   cpuset_t cpuset;
  44
  45   CPUSET_ZERO(cpuset);
  46   CPUSET_SET(cpuset, cpu);
  47   return taskCpuAffinitySet (tid, cpuset);
  48 }
  49
  50 int
  51 __gnat_set_affinity_mask (int tid, unsigned mask)
  52 {
  53   int index;
  54   cpuset_t cpuset;
  55
  56   CPUSET_ZERO(cpuset);
  57
  58   for (index = 0; index < sizeof (unsigned) * 8; index++)
  59     if (mask & (1 << index))
  60       CPUSET_SET(cpuset, index);
  61
  62   return taskCpuAffinitySet (tid, cpuset);
  63 }