1 /* Copyright (C) 2006-2020 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 #include <string.h> 30 #include <stdio.h> 31 32 void 33 gomp_init_affinity (void) 34 { 35 } 36 37 #ifdef LIBGOMP_USE_PTHREADS 38 void 39 gomp_init_thread_affinity (pthread_attr_t *attr, unsigned int place) 40 { 41 (void) attr; 42 (void) place; 43 } 44 #endif 45 46 void ** 47 gomp_affinity_alloc (unsigned long count, bool quiet) 48 { 49 (void) count; 50 if (!quiet) 51 gomp_error ("Affinity not supported on this configuration"); 52 return NULL; 53 } 54 55 void 56 gomp_affinity_init_place (void *p) 57 { 58 (void) p; 59 } 60 61 bool 62 gomp_affinity_add_cpus (void *p, unsigned long num, 63 unsigned long len, long stride, bool quiet) 64 { 65 (void) p; 66 (void) num; 67 (void) len; 68 (void) stride; 69 (void) quiet; 70 return false; 71 } 72 73 bool 74 gomp_affinity_remove_cpu (void *p, unsigned long num) 75 { 76 (void) p; 77 (void) num; 78 return false; 79 } 80 81 bool 82 gomp_affinity_copy_place (void *p, void *q, long stride) 83 { 84 (void) p; 85 (void) q; 86 (void) stride; 87 return false; 88 } 89 90 bool 91 gomp_affinity_same_place (void *p, void *q) 92 { 93 (void) p; 94 (void) q; 95 return false; 96 } 97 98 bool 99 gomp_affinity_finalize_place_list (bool quiet) 100 { 101 (void) quiet; 102 return false; 103 } 104 105 bool 106 gomp_affinity_init_level (int level, unsigned long count, bool quiet) 107 { 108 (void) level; 109 (void) count; 110 (void) quiet; 111 if (!quiet) 112 gomp_error ("Affinity not supported on this configuration"); 113 return NULL; 114 } 115 116 void 117 gomp_affinity_print_place (void *p) 118 { 119 (void) p; 120 } 121 122 int 123 omp_get_place_num_procs (int place_num) 124 { 125 (void) place_num; 126 return 0; 127 } 128 129 void 130 omp_get_place_proc_ids (int place_num, int *ids) 131 { 132 (void) place_num; 133 (void) ids; 134 } 135 136 void 137 gomp_get_place_proc_ids_8 (int place_num, int64_t *ids) 138 { 139 (void) place_num; 140 (void) ids; 141 } 142 143 void 144 gomp_display_affinity_place (char *buffer, size_t size, size_t *ret, 145 int place) 146 { 147 char buf[sizeof (long) * 3 + 4]; 148 if (gomp_available_cpus > 1) 149 sprintf (buf, "0-%lu", gomp_available_cpus - 1); 150 else 151 strcpy (buf, "0"); 152 gomp_display_string (buffer, size, ret, buf, strlen (buf)); 153 } 154 155 ialias(omp_get_place_num_procs) 156 ialias(omp_get_place_proc_ids) 157