1 /* Copyright (C) 2005-2022 Free Software Foundation, Inc. 2 Contributed by Richard Henderson <rth@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 file defines the OpenMP API entry points that operate on internal 27 control variables. */ 28 29 #include "libgomp.h" 30 #include "gomp-constants.h" 31 #include <limits.h> 32 33 ialias_redirect (omp_get_active_level) 34 35 void 36 omp_set_num_threads (int n) 37 { 38 struct gomp_task_icv *icv = gomp_icv (true); 39 icv->nthreads_var = (n > 0 ? n : 1); 40 } 41 42 void 43 omp_set_dynamic (int val) 44 { 45 struct gomp_task_icv *icv = gomp_icv (true); 46 icv->dyn_var = val; 47 } 48 49 int 50 omp_get_dynamic (void) 51 { 52 struct gomp_task_icv *icv = gomp_icv (false); 53 return icv->dyn_var; 54 } 55 56 #pragma GCC diagnostic push 57 #pragma GCC diagnostic ignored "-Wdeprecated-declarations" 58 void 59 omp_set_nested (int val) 60 { 61 struct gomp_task_icv *icv = gomp_icv (true); 62 if (val) 63 icv->max_active_levels_var = gomp_supported_active_levels; 64 else if (icv->max_active_levels_var > 1) 65 icv->max_active_levels_var = 1; 66 } 67 68 int 69 omp_get_nested (void) 70 { 71 struct gomp_task_icv *icv = gomp_icv (false); 72 return (icv->max_active_levels_var > 1 73 && icv->max_active_levels_var > omp_get_active_level ()); 74 } 75 #pragma GCC diagnostic pop 76 77 void 78 omp_set_schedule (omp_sched_t kind, int chunk_size) 79 { 80 struct gomp_task_icv *icv = gomp_icv (true); 81 switch (kind & ~omp_sched_monotonic) 82 { 83 case omp_sched_static: 84 if (chunk_size < 1) 85 chunk_size = 0; 86 icv->run_sched_chunk_size = chunk_size; 87 break; 88 case omp_sched_dynamic: 89 case omp_sched_guided: 90 if (chunk_size < 1) 91 chunk_size = 1; 92 icv->run_sched_chunk_size = chunk_size; 93 break; 94 case omp_sched_auto: 95 break; 96 default: 97 return; 98 } 99 icv->run_sched_var = kind; 100 } 101 102 void 103 omp_get_schedule (omp_sched_t *kind, int *chunk_size) 104 { 105 struct gomp_task_icv *icv = gomp_icv (false); 106 *kind = icv->run_sched_var; 107 *chunk_size = icv->run_sched_chunk_size; 108 } 109 110 int 111 omp_get_max_threads (void) 112 { 113 struct gomp_task_icv *icv = gomp_icv (false); 114 return icv->nthreads_var; 115 } 116 117 int 118 omp_get_thread_limit (void) 119 { 120 struct gomp_task_icv *icv = gomp_icv (false); 121 return icv->thread_limit_var > INT_MAX ? INT_MAX : icv->thread_limit_var; 122 } 123 124 void 125 omp_set_max_active_levels (int max_levels) 126 { 127 if (max_levels >= 0) 128 { 129 struct gomp_task_icv *icv = gomp_icv (true); 130 131 if (max_levels <= gomp_supported_active_levels) 132 icv->max_active_levels_var = max_levels; 133 else 134 icv->max_active_levels_var = gomp_supported_active_levels; 135 } 136 } 137 138 int 139 omp_get_max_active_levels (void) 140 { 141 struct gomp_task_icv *icv = gomp_icv (false); 142 return icv->max_active_levels_var; 143 } 144 145 int 146 omp_get_supported_active_levels (void) 147 { 148 return gomp_supported_active_levels; 149 } 150 151 void 152 omp_set_num_teams (int num_teams) 153 { 154 if (num_teams >= 0) 155 gomp_nteams_var = num_teams; 156 } 157 158 int 159 omp_get_max_teams (void) 160 { 161 return gomp_nteams_var; 162 } 163 164 void 165 omp_set_teams_thread_limit (int thread_limit) 166 { 167 if (thread_limit >= 0) 168 gomp_teams_thread_limit_var = thread_limit; 169 } 170 171 int 172 omp_get_teams_thread_limit (void) 173 { 174 return gomp_teams_thread_limit_var; 175 } 176 177 int 178 omp_get_cancellation (void) 179 { 180 return gomp_cancel_var; 181 } 182 183 int 184 omp_get_max_task_priority (void) 185 { 186 return gomp_max_task_priority_var; 187 } 188 189 omp_proc_bind_t 190 omp_get_proc_bind (void) 191 { 192 struct gomp_task_icv *icv = gomp_icv (false); 193 return icv->bind_var; 194 } 195 196 int 197 omp_get_num_places (void) 198 { 199 return gomp_places_list_len; 200 } 201 202 int 203 omp_get_place_num (void) 204 { 205 if (gomp_places_list == NULL) 206 return -1; 207 208 struct gomp_thread *thr = gomp_thread (); 209 if (thr->place == 0) 210 gomp_init_affinity (); 211 212 return (int) thr->place - 1; 213 } 214 215 int 216 omp_get_partition_num_places (void) 217 { 218 if (gomp_places_list == NULL) 219 return 0; 220 221 struct gomp_thread *thr = gomp_thread (); 222 if (thr->place == 0) 223 gomp_init_affinity (); 224 225 return thr->ts.place_partition_len; 226 } 227 228 void 229 omp_get_partition_place_nums (int *place_nums) 230 { 231 if (gomp_places_list == NULL) 232 return; 233 234 struct gomp_thread *thr = gomp_thread (); 235 if (thr->place == 0) 236 gomp_init_affinity (); 237 238 unsigned int i; 239 for (i = 0; i < thr->ts.place_partition_len; i++) 240 *place_nums++ = thr->ts.place_partition_off + i; 241 } 242 243 void 244 omp_set_default_allocator (omp_allocator_handle_t allocator) 245 { 246 struct gomp_thread *thr = gomp_thread (); 247 if (allocator == omp_null_allocator) 248 allocator = omp_default_mem_alloc; 249 thr->ts.def_allocator = (uintptr_t) allocator; 250 } 251 252 omp_allocator_handle_t 253 omp_get_default_allocator (void) 254 { 255 struct gomp_thread *thr = gomp_thread (); 256 if (thr->ts.def_allocator == omp_null_allocator) 257 return (omp_allocator_handle_t) gomp_def_allocator; 258 else 259 return (omp_allocator_handle_t) thr->ts.def_allocator; 260 } 261 262 ialias (omp_set_dynamic) 263 ialias (omp_get_dynamic) 264 #pragma GCC diagnostic push 265 #pragma GCC diagnostic ignored "-Wdeprecated-declarations" 266 ialias (omp_set_nested) 267 ialias (omp_get_nested) 268 #pragma GCC diagnostic pop 269 ialias (omp_set_num_threads) 270 ialias (omp_set_schedule) 271 ialias (omp_get_schedule) 272 ialias (omp_get_max_threads) 273 ialias (omp_get_thread_limit) 274 ialias (omp_set_max_active_levels) 275 ialias (omp_get_max_active_levels) 276 ialias (omp_get_supported_active_levels) 277 ialias (omp_set_num_teams) 278 ialias (omp_get_max_teams) 279 ialias (omp_set_teams_thread_limit) 280 ialias (omp_get_teams_thread_limit) 281 ialias (omp_get_cancellation) 282 ialias (omp_get_proc_bind) 283 ialias (omp_get_max_task_priority) 284 ialias (omp_get_num_places) 285 ialias (omp_get_place_num) 286 ialias (omp_get_partition_num_places) 287 ialias (omp_get_partition_place_nums) 288 ialias (omp_set_default_allocator) 289 ialias (omp_get_default_allocator) 290