libgomp/affinity.c

   1 /* Copyright (C) 2006-2018 Free Software Foundation, Inc.
   2    Contributed by Jakub Jelinek <jakub@redhat.com>.
   3
   4    This file is part of the GNU Offloading and Multi Processing Library
   5    (libgomp).
   6
   7    Libgomp is free software; you can redistribute it and/or modify it
   8    under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3, or (at your option)
  10    any later version.
  11
  12    Libgomp is distributed in the hope that it will be useful, but WITHOUT ANY
  13    WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  14    FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  15    more details.
  16
  17    Under Section 7 of GPL version 3, you are granted additional
  18    permissions described in the GCC Runtime Library Exception, version
  19    3.1, as published by the Free Software Foundation.
  20
  21    You should have received a copy of the GNU General Public License and
  22    a copy of the GCC Runtime Library Exception along with this program;
  23    see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  24    <http://www.gnu.org/licenses/>.  */
  25
  26 /* This is a generic stub implementation of a CPU affinity setting.  */
  27
  28 #include "libgomp.h"
  29
  30 void
  31 gomp_init_affinity (void)
  32 {
  33 }
  34
  35 #ifdef LIBGOMP_USE_PTHREADS
  36 void
  37 gomp_init_thread_affinity (pthread_attr_t *attr, unsigned int place)
  38 {
  39   (void) attr;
  40   (void) place;
  41 }
  42 #endif
  43
  44 void **
  45 gomp_affinity_alloc (unsigned long count, bool quiet)
  46 {
  47   (void) count;
  48   if (!quiet)
  49     gomp_error ("Affinity not supported on this configuration");
  50   return NULL;
  51 }
  52
  53 void
  54 gomp_affinity_init_place (void *p)
  55 {
  56   (void) p;
  57 }
  58
  59 bool
  60 gomp_affinity_add_cpus (void *p, unsigned long num,
  61                         unsigned long len, long stride, bool quiet)
  62 {
  63   (void) p;
  64   (void) num;
  65   (void) len;
  66   (void) stride;
  67   (void) quiet;
  68   return false;
  69 }
  70
  71 bool
  72 gomp_affinity_remove_cpu (void *p, unsigned long num)
  73 {
  74   (void) p;
  75   (void) num;
  76   return false;
  77 }
  78
  79 bool
  80 gomp_affinity_copy_place (void *p, void *q, long stride)
  81 {
  82   (void) p;
  83   (void) q;
  84   (void) stride;
  85   return false;
  86 }
  87
  88 bool
  89 gomp_affinity_same_place (void *p, void *q)
  90 {
  91   (void) p;
  92   (void) q;
  93   return false;
  94 }
  95
  96 bool
  97 gomp_affinity_finalize_place_list (bool quiet)
  98 {
  99   (void) quiet;
 100   return false;
 101 }
 102
 103 bool
 104 gomp_affinity_init_level (int level, unsigned long count, bool quiet)
 105 {
 106   (void) level;
 107   (void) count;
 108   (void) quiet;
 109   if (!quiet)
 110     gomp_error ("Affinity not supported on this configuration");
 111   return NULL;
 112 }
 113
 114 void
 115 gomp_affinity_print_place (void *p)
 116 {
 117   (void) p;
 118 }
 119
 120 int
 121 omp_get_place_num_procs (int place_num)
 122 {
 123   (void) place_num;
 124   return 0;
 125 }
 126
 127 void
 128 omp_get_place_proc_ids (int place_num, int *ids)
 129 {
 130   (void) place_num;
 131   (void) ids;
 132 }
 133
 134 void
 135 gomp_get_place_proc_ids_8 (int place_num, int64_t *ids)
 136 {
 137   (void) place_num;
 138   (void) ids;
 139 }
 140
 141 ialias(omp_get_place_num_procs)
 142 ialias(omp_get_place_proc_ids)