1 /* 2 * ompt-general.cpp -- OMPT implementation of interface functions 3 */ 4 5 //===----------------------------------------------------------------------===// 6 // 7 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 8 // See https://llvm.org/LICENSE.txt for license information. 9 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 10 // 11 //===----------------------------------------------------------------------===// 12 13 /***************************************************************************** 14 * system include files 15 ****************************************************************************/ 16 17 #include <assert.h> 18 19 #include <stdint.h> 20 #include <stdio.h> 21 #include <stdlib.h> 22 #include <string.h> 23 #if KMP_OS_UNIX 24 #include <dlfcn.h> 25 #endif 26 27 /***************************************************************************** 28 * ompt include files 29 ****************************************************************************/ 30 31 #include "ompt-specific.cpp" 32 33 /***************************************************************************** 34 * macros 35 ****************************************************************************/ 36 37 #define ompt_get_callback_success 1 38 #define ompt_get_callback_failure 0 39 40 #define no_tool_present 0 41 42 #define OMPT_API_ROUTINE static 43 44 #ifndef OMPT_STR_MATCH 45 #define OMPT_STR_MATCH(haystack, needle) (!strcasecmp(haystack, needle)) 46 #endif 47 48 /***************************************************************************** 49 * types 50 ****************************************************************************/ 51 52 typedef struct { 53 const char *state_name; 54 ompt_state_t state_id; 55 } ompt_state_info_t; 56 57 typedef struct { 58 const char *name; 59 kmp_mutex_impl_t id; 60 } kmp_mutex_impl_info_t; 61 62 enum tool_setting_e { 63 omp_tool_error, 64 omp_tool_unset, 65 omp_tool_disabled, 66 omp_tool_enabled 67 }; 68 69 /***************************************************************************** 70 * global variables 71 ****************************************************************************/ 72 73 ompt_callbacks_active_t ompt_enabled; 74 75 ompt_state_info_t ompt_state_info[] = { 76 #define ompt_state_macro(state, code) {#state, state}, 77 FOREACH_OMPT_STATE(ompt_state_macro) 78 #undef ompt_state_macro 79 }; 80 81 kmp_mutex_impl_info_t kmp_mutex_impl_info[] = { 82 #define kmp_mutex_impl_macro(name, id) {#name, name}, 83 FOREACH_KMP_MUTEX_IMPL(kmp_mutex_impl_macro) 84 #undef kmp_mutex_impl_macro 85 }; 86 87 ompt_callbacks_internal_t ompt_callbacks; 88 89 static ompt_start_tool_result_t *ompt_start_tool_result = NULL; 90 91 /***************************************************************************** 92 * forward declarations 93 ****************************************************************************/ 94 95 static ompt_interface_fn_t ompt_fn_lookup(const char *s); 96 97 OMPT_API_ROUTINE ompt_data_t *ompt_get_thread_data(void); 98 99 /***************************************************************************** 100 * initialization and finalization (private operations) 101 ****************************************************************************/ 102 103 typedef ompt_start_tool_result_t *(*ompt_start_tool_t)(unsigned int, 104 const char *); 105 106 #if KMP_OS_DARWIN 107 108 // While Darwin supports weak symbols, the library that wishes to provide a new 109 // implementation has to link against this runtime which defeats the purpose 110 // of having tools that are agnostic of the underlying runtime implementation. 111 // 112 // Fortunately, the linker includes all symbols of an executable in the global 113 // symbol table by default so dlsym() even finds static implementations of 114 // ompt_start_tool. For this to work on Linux, -Wl,--export-dynamic needs to be 115 // passed when building the application which we don't want to rely on. 116 117 static ompt_start_tool_result_t *ompt_tool_darwin(unsigned int omp_version, 118 const char *runtime_version) { 119 ompt_start_tool_result_t *ret = NULL; 120 // Search symbol in the current address space. 121 ompt_start_tool_t start_tool = 122 (ompt_start_tool_t)dlsym(RTLD_DEFAULT, "ompt_start_tool"); 123 if (start_tool) { 124 ret = start_tool(omp_version, runtime_version); 125 } 126 return ret; 127 } 128 129 #elif OMPT_HAVE_WEAK_ATTRIBUTE 130 131 // On Unix-like systems that support weak symbols the following implementation 132 // of ompt_start_tool() will be used in case no tool-supplied implementation of 133 // this function is present in the address space of a process. 134 135 _OMP_EXTERN OMPT_WEAK_ATTRIBUTE ompt_start_tool_result_t * 136 ompt_start_tool(unsigned int omp_version, const char *runtime_version) { 137 ompt_start_tool_result_t *ret = NULL; 138 // Search next symbol in the current address space. This can happen if the 139 // runtime library is linked before the tool. Since glibc 2.2 strong symbols 140 // don't override weak symbols that have been found before unless the user 141 // sets the environment variable LD_DYNAMIC_WEAK. 142 ompt_start_tool_t next_tool = 143 (ompt_start_tool_t)dlsym(RTLD_NEXT, "ompt_start_tool"); 144 if (next_tool) { 145 ret = next_tool(omp_version, runtime_version); 146 } 147 return ret; 148 } 149 150 #elif OMPT_HAVE_PSAPI 151 152 // On Windows, the ompt_tool_windows function is used to find the 153 // ompt_start_tool symbol across all modules loaded by a process. If 154 // ompt_start_tool is found, ompt_start_tool's return value is used to 155 // initialize the tool. Otherwise, NULL is returned and OMPT won't be enabled. 156 157 #include <psapi.h> 158 #pragma comment(lib, "psapi.lib") 159 160 // The number of loaded modules to start enumeration with EnumProcessModules() 161 #define NUM_MODULES 128 162 163 static ompt_start_tool_result_t * 164 ompt_tool_windows(unsigned int omp_version, const char *runtime_version) { 165 int i; 166 DWORD needed, new_size; 167 HMODULE *modules; 168 HANDLE process = GetCurrentProcess(); 169 modules = (HMODULE *)malloc(NUM_MODULES * sizeof(HMODULE)); 170 ompt_start_tool_t ompt_tool_p = NULL; 171 172 #if OMPT_DEBUG 173 printf("ompt_tool_windows(): looking for ompt_start_tool\n"); 174 #endif 175 if (!EnumProcessModules(process, modules, NUM_MODULES * sizeof(HMODULE), 176 &needed)) { 177 // Regardless of the error reason use the stub initialization function 178 free(modules); 179 return NULL; 180 } 181 // Check if NUM_MODULES is enough to list all modules 182 new_size = needed / sizeof(HMODULE); 183 if (new_size > NUM_MODULES) { 184 #if OMPT_DEBUG 185 printf("ompt_tool_windows(): resize buffer to %d bytes\n", needed); 186 #endif 187 modules = (HMODULE *)realloc(modules, needed); 188 // If resizing failed use the stub function. 189 if (!EnumProcessModules(process, modules, needed, &needed)) { 190 free(modules); 191 return NULL; 192 } 193 } 194 for (i = 0; i < new_size; ++i) { 195 (FARPROC &)ompt_tool_p = GetProcAddress(modules[i], "ompt_start_tool"); 196 if (ompt_tool_p) { 197 #if OMPT_DEBUG 198 TCHAR modName[MAX_PATH]; 199 if (GetModuleFileName(modules[i], modName, MAX_PATH)) 200 printf("ompt_tool_windows(): ompt_start_tool found in module %s\n", 201 modName); 202 #endif 203 free(modules); 204 return (*ompt_tool_p)(omp_version, runtime_version); 205 } 206 #if OMPT_DEBUG 207 else { 208 TCHAR modName[MAX_PATH]; 209 if (GetModuleFileName(modules[i], modName, MAX_PATH)) 210 printf("ompt_tool_windows(): ompt_start_tool not found in module %s\n", 211 modName); 212 } 213 #endif 214 } 215 free(modules); 216 return NULL; 217 } 218 #else 219 #error Activation of OMPT is not supported on this platform. 220 #endif 221 222 static ompt_start_tool_result_t * 223 ompt_try_start_tool(unsigned int omp_version, const char *runtime_version) { 224 ompt_start_tool_result_t *ret = NULL; 225 ompt_start_tool_t start_tool = NULL; 226 #if KMP_OS_WINDOWS 227 // Cannot use colon to describe a list of absolute paths on Windows 228 const char *sep = ";"; 229 #else 230 const char *sep = ":"; 231 #endif 232 233 #if KMP_OS_DARWIN 234 // Try in the current address space 235 ret = ompt_tool_darwin(omp_version, runtime_version); 236 #elif OMPT_HAVE_WEAK_ATTRIBUTE 237 ret = ompt_start_tool(omp_version, runtime_version); 238 #elif OMPT_HAVE_PSAPI 239 ret = ompt_tool_windows(omp_version, runtime_version); 240 #else 241 #error Activation of OMPT is not supported on this platform. 242 #endif 243 if (ret) 244 return ret; 245 246 // Try tool-libraries-var ICV 247 const char *tool_libs = getenv("OMP_TOOL_LIBRARIES"); 248 if (tool_libs) { 249 char *libs = __kmp_str_format("%s", tool_libs); 250 char *buf; 251 char *fname = __kmp_str_token(libs, sep, &buf); 252 while (fname) { 253 #if KMP_OS_UNIX 254 void *h = dlopen(fname, RTLD_LAZY); 255 if (h) { 256 start_tool = (ompt_start_tool_t)dlsym(h, "ompt_start_tool"); 257 #elif KMP_OS_WINDOWS 258 HMODULE h = LoadLibrary(fname); 259 if (h) { 260 start_tool = (ompt_start_tool_t)GetProcAddress(h, "ompt_start_tool"); 261 #else 262 #error Activation of OMPT is not supported on this platform. 263 #endif 264 if (start_tool && (ret = (*start_tool)(omp_version, runtime_version))) 265 break; 266 } 267 fname = __kmp_str_token(NULL, sep, &buf); 268 } 269 __kmp_str_free(&libs); 270 } 271 return ret; 272 } 273 274 void ompt_pre_init() { 275 //-------------------------------------------------- 276 // Execute the pre-initialization logic only once. 277 //-------------------------------------------------- 278 static int ompt_pre_initialized = 0; 279 280 if (ompt_pre_initialized) 281 return; 282 283 ompt_pre_initialized = 1; 284 285 //-------------------------------------------------- 286 // Use a tool iff a tool is enabled and available. 287 //-------------------------------------------------- 288 const char *ompt_env_var = getenv("OMP_TOOL"); 289 tool_setting_e tool_setting = omp_tool_error; 290 291 if (!ompt_env_var || !strcmp(ompt_env_var, "")) 292 tool_setting = omp_tool_unset; 293 else if (OMPT_STR_MATCH(ompt_env_var, "disabled")) 294 tool_setting = omp_tool_disabled; 295 else if (OMPT_STR_MATCH(ompt_env_var, "enabled")) 296 tool_setting = omp_tool_enabled; 297 298 #if OMPT_DEBUG 299 printf("ompt_pre_init(): tool_setting = %d\n", tool_setting); 300 #endif 301 switch (tool_setting) { 302 case omp_tool_disabled: 303 break; 304 305 case omp_tool_unset: 306 case omp_tool_enabled: 307 308 //-------------------------------------------------- 309 // Load tool iff specified in environment variable 310 //-------------------------------------------------- 311 ompt_start_tool_result = 312 ompt_try_start_tool(__kmp_openmp_version, ompt_get_runtime_version()); 313 314 memset(&ompt_enabled, 0, sizeof(ompt_enabled)); 315 break; 316 317 case omp_tool_error: 318 fprintf(stderr, "Warning: OMP_TOOL has invalid value \"%s\".\n" 319 " legal values are (NULL,\"\",\"disabled\"," 320 "\"enabled\").\n", 321 ompt_env_var); 322 break; 323 } 324 #if OMPT_DEBUG 325 printf("ompt_pre_init(): ompt_enabled = %d\n", ompt_enabled); 326 #endif 327 } 328 329 extern "C" int omp_get_initial_device(void); 330 331 void ompt_post_init() { 332 //-------------------------------------------------- 333 // Execute the post-initialization logic only once. 334 //-------------------------------------------------- 335 static int ompt_post_initialized = 0; 336 337 if (ompt_post_initialized) 338 return; 339 340 ompt_post_initialized = 1; 341 342 //-------------------------------------------------- 343 // Initialize the tool if so indicated. 344 //-------------------------------------------------- 345 if (ompt_start_tool_result) { 346 ompt_enabled.enabled = !!ompt_start_tool_result->initialize( 347 ompt_fn_lookup, omp_get_initial_device(), &(ompt_start_tool_result->tool_data)); 348 349 if (!ompt_enabled.enabled) { 350 // tool not enabled, zero out the bitmap, and done 351 memset(&ompt_enabled, 0, sizeof(ompt_enabled)); 352 return; 353 } 354 355 kmp_info_t *root_thread = ompt_get_thread(); 356 357 ompt_set_thread_state(root_thread, ompt_state_overhead); 358 359 if (ompt_enabled.ompt_callback_thread_begin) { 360 ompt_callbacks.ompt_callback(ompt_callback_thread_begin)( 361 ompt_thread_initial, __ompt_get_thread_data_internal()); 362 } 363 ompt_data_t *task_data; 364 ompt_data_t *parallel_data; 365 __ompt_get_task_info_internal(0, NULL, &task_data, NULL, ¶llel_data, NULL); 366 if (ompt_enabled.ompt_callback_implicit_task) { 367 ompt_callbacks.ompt_callback(ompt_callback_implicit_task)( 368 ompt_scope_begin, parallel_data, task_data, 1, 1, ompt_task_initial); 369 } 370 371 ompt_set_thread_state(root_thread, ompt_state_work_serial); 372 } 373 } 374 375 void ompt_fini() { 376 if (ompt_enabled.enabled) { 377 ompt_start_tool_result->finalize(&(ompt_start_tool_result->tool_data)); 378 } 379 380 memset(&ompt_enabled, 0, sizeof(ompt_enabled)); 381 } 382 383 /***************************************************************************** 384 * interface operations 385 ****************************************************************************/ 386 387 /***************************************************************************** 388 * state 389 ****************************************************************************/ 390 391 OMPT_API_ROUTINE int ompt_enumerate_states(int current_state, int *next_state, 392 const char **next_state_name) { 393 const static int len = sizeof(ompt_state_info) / sizeof(ompt_state_info_t); 394 int i = 0; 395 396 for (i = 0; i < len - 1; i++) { 397 if (ompt_state_info[i].state_id == current_state) { 398 *next_state = ompt_state_info[i + 1].state_id; 399 *next_state_name = ompt_state_info[i + 1].state_name; 400 return 1; 401 } 402 } 403 404 return 0; 405 } 406 407 OMPT_API_ROUTINE int ompt_enumerate_mutex_impls(int current_impl, 408 int *next_impl, 409 const char **next_impl_name) { 410 const static int len = 411 sizeof(kmp_mutex_impl_info) / sizeof(kmp_mutex_impl_info_t); 412 int i = 0; 413 for (i = 0; i < len - 1; i++) { 414 if (kmp_mutex_impl_info[i].id != current_impl) 415 continue; 416 *next_impl = kmp_mutex_impl_info[i + 1].id; 417 *next_impl_name = kmp_mutex_impl_info[i + 1].name; 418 return 1; 419 } 420 return 0; 421 } 422 423 /***************************************************************************** 424 * callbacks 425 ****************************************************************************/ 426 427 OMPT_API_ROUTINE ompt_set_result_t ompt_set_callback(ompt_callbacks_t which, 428 ompt_callback_t callback) { 429 switch (which) { 430 431 #define ompt_event_macro(event_name, callback_type, event_id) \ 432 case event_name: \ 433 if (ompt_event_implementation_status(event_name)) { \ 434 ompt_callbacks.ompt_callback(event_name) = (callback_type)callback; \ 435 ompt_enabled.event_name = (callback != 0); \ 436 } \ 437 if (callback) \ 438 return ompt_event_implementation_status(event_name); \ 439 else \ 440 return ompt_set_always; 441 442 FOREACH_OMPT_EVENT(ompt_event_macro) 443 444 #undef ompt_event_macro 445 446 default: 447 return ompt_set_error; 448 } 449 } 450 451 OMPT_API_ROUTINE int ompt_get_callback(ompt_callbacks_t which, 452 ompt_callback_t *callback) { 453 if (!ompt_enabled.enabled) 454 return ompt_get_callback_failure; 455 456 switch (which) { 457 458 #define ompt_event_macro(event_name, callback_type, event_id) \ 459 case event_name: \ 460 if (ompt_event_implementation_status(event_name)) { \ 461 ompt_callback_t mycb = \ 462 (ompt_callback_t)ompt_callbacks.ompt_callback(event_name); \ 463 if (ompt_enabled.event_name && mycb) { \ 464 *callback = mycb; \ 465 return ompt_get_callback_success; \ 466 } \ 467 } \ 468 return ompt_get_callback_failure; 469 470 FOREACH_OMPT_EVENT(ompt_event_macro) 471 472 #undef ompt_event_macro 473 474 default: 475 return ompt_get_callback_failure; 476 } 477 } 478 479 /***************************************************************************** 480 * parallel regions 481 ****************************************************************************/ 482 483 OMPT_API_ROUTINE int ompt_get_parallel_info(int ancestor_level, 484 ompt_data_t **parallel_data, 485 int *team_size) { 486 if (!ompt_enabled.enabled) 487 return 0; 488 return __ompt_get_parallel_info_internal(ancestor_level, parallel_data, 489 team_size); 490 } 491 492 OMPT_API_ROUTINE int ompt_get_state(ompt_wait_id_t *wait_id) { 493 if (!ompt_enabled.enabled) 494 return ompt_state_work_serial; 495 int thread_state = __ompt_get_state_internal(wait_id); 496 497 if (thread_state == ompt_state_undefined) { 498 thread_state = ompt_state_work_serial; 499 } 500 501 return thread_state; 502 } 503 504 /***************************************************************************** 505 * tasks 506 ****************************************************************************/ 507 508 OMPT_API_ROUTINE ompt_data_t *ompt_get_thread_data(void) { 509 if (!ompt_enabled.enabled) 510 return NULL; 511 return __ompt_get_thread_data_internal(); 512 } 513 514 OMPT_API_ROUTINE int ompt_get_task_info(int ancestor_level, int *type, 515 ompt_data_t **task_data, 516 ompt_frame_t **task_frame, 517 ompt_data_t **parallel_data, 518 int *thread_num) { 519 if (!ompt_enabled.enabled) 520 return 0; 521 return __ompt_get_task_info_internal(ancestor_level, type, task_data, 522 task_frame, parallel_data, thread_num); 523 } 524 525 OMPT_API_ROUTINE int ompt_get_task_memory(void **addr, size_t *size, 526 int block) { 527 return __ompt_get_task_memory_internal(addr, size, block); 528 } 529 530 /***************************************************************************** 531 * num_procs 532 ****************************************************************************/ 533 534 OMPT_API_ROUTINE int ompt_get_num_procs(void) { 535 // copied from kmp_ftn_entry.h (but modified: OMPT can only be called when 536 // runtime is initialized) 537 return __kmp_avail_proc; 538 } 539 540 /***************************************************************************** 541 * places 542 ****************************************************************************/ 543 544 OMPT_API_ROUTINE int ompt_get_num_places(void) { 545 // copied from kmp_ftn_entry.h (but modified) 546 #if !KMP_AFFINITY_SUPPORTED 547 return 0; 548 #else 549 if (!KMP_AFFINITY_CAPABLE()) 550 return 0; 551 return __kmp_affinity_num_masks; 552 #endif 553 } 554 555 OMPT_API_ROUTINE int ompt_get_place_proc_ids(int place_num, int ids_size, 556 int *ids) { 557 // copied from kmp_ftn_entry.h (but modified) 558 #if !KMP_AFFINITY_SUPPORTED 559 return 0; 560 #else 561 int i, count; 562 int tmp_ids[ids_size]; 563 if (!KMP_AFFINITY_CAPABLE()) 564 return 0; 565 if (place_num < 0 || place_num >= (int)__kmp_affinity_num_masks) 566 return 0; 567 /* TODO: Is this safe for asynchronous call from signal handler during runtime 568 * shutdown? */ 569 kmp_affin_mask_t *mask = KMP_CPU_INDEX(__kmp_affinity_masks, place_num); 570 count = 0; 571 KMP_CPU_SET_ITERATE(i, mask) { 572 if ((!KMP_CPU_ISSET(i, __kmp_affin_fullMask)) || 573 (!KMP_CPU_ISSET(i, mask))) { 574 continue; 575 } 576 if (count < ids_size) 577 tmp_ids[count] = i; 578 count++; 579 } 580 if (ids_size >= count) { 581 for (i = 0; i < count; i++) { 582 ids[i] = tmp_ids[i]; 583 } 584 } 585 return count; 586 #endif 587 } 588 589 OMPT_API_ROUTINE int ompt_get_place_num(void) { 590 // copied from kmp_ftn_entry.h (but modified) 591 #if !KMP_AFFINITY_SUPPORTED 592 return -1; 593 #else 594 if (!ompt_enabled.enabled || __kmp_get_gtid() < 0) 595 return -1; 596 597 int gtid; 598 kmp_info_t *thread; 599 if (!KMP_AFFINITY_CAPABLE()) 600 return -1; 601 gtid = __kmp_entry_gtid(); 602 thread = __kmp_thread_from_gtid(gtid); 603 if (thread == NULL || thread->th.th_current_place < 0) 604 return -1; 605 return thread->th.th_current_place; 606 #endif 607 } 608 609 OMPT_API_ROUTINE int ompt_get_partition_place_nums(int place_nums_size, 610 int *place_nums) { 611 // copied from kmp_ftn_entry.h (but modified) 612 #if !KMP_AFFINITY_SUPPORTED 613 return 0; 614 #else 615 if (!ompt_enabled.enabled || __kmp_get_gtid() < 0) 616 return 0; 617 618 int i, gtid, place_num, first_place, last_place, start, end; 619 kmp_info_t *thread; 620 if (!KMP_AFFINITY_CAPABLE()) 621 return 0; 622 gtid = __kmp_entry_gtid(); 623 thread = __kmp_thread_from_gtid(gtid); 624 if (thread == NULL) 625 return 0; 626 first_place = thread->th.th_first_place; 627 last_place = thread->th.th_last_place; 628 if (first_place < 0 || last_place < 0) 629 return 0; 630 if (first_place <= last_place) { 631 start = first_place; 632 end = last_place; 633 } else { 634 start = last_place; 635 end = first_place; 636 } 637 if (end - start <= place_nums_size) 638 for (i = 0, place_num = start; place_num <= end; ++place_num, ++i) { 639 place_nums[i] = place_num; 640 } 641 return end - start + 1; 642 #endif 643 } 644 645 /***************************************************************************** 646 * places 647 ****************************************************************************/ 648 649 OMPT_API_ROUTINE int ompt_get_proc_id(void) { 650 if (!ompt_enabled.enabled || __kmp_get_gtid() < 0) 651 return -1; 652 #if KMP_OS_LINUX 653 return sched_getcpu(); 654 #elif KMP_OS_WINDOWS 655 PROCESSOR_NUMBER pn; 656 GetCurrentProcessorNumberEx(&pn); 657 return 64 * pn.Group + pn.Number; 658 #else 659 return -1; 660 #endif 661 } 662 663 /***************************************************************************** 664 * compatability 665 ****************************************************************************/ 666 667 /* 668 * Currently unused function 669 OMPT_API_ROUTINE int ompt_get_ompt_version() { return OMPT_VERSION; } 670 */ 671 672 /***************************************************************************** 673 * application-facing API 674 ****************************************************************************/ 675 676 /*---------------------------------------------------------------------------- 677 | control 678 ---------------------------------------------------------------------------*/ 679 680 int __kmp_control_tool(uint64_t command, uint64_t modifier, void *arg) { 681 682 if (ompt_enabled.enabled) { 683 if (ompt_enabled.ompt_callback_control_tool) { 684 return ompt_callbacks.ompt_callback(ompt_callback_control_tool)( 685 command, modifier, arg, OMPT_LOAD_RETURN_ADDRESS(__kmp_entry_gtid())); 686 } else { 687 return -1; 688 } 689 } else { 690 return -2; 691 } 692 } 693 694 /***************************************************************************** 695 * misc 696 ****************************************************************************/ 697 698 OMPT_API_ROUTINE uint64_t ompt_get_unique_id(void) { 699 return __ompt_get_unique_id_internal(); 700 } 701 702 OMPT_API_ROUTINE void ompt_finalize_tool(void) { __kmp_internal_end_atexit(); } 703 704 /***************************************************************************** 705 * Target 706 ****************************************************************************/ 707 708 OMPT_API_ROUTINE int ompt_get_target_info(uint64_t *device_num, 709 ompt_id_t *target_id, 710 ompt_id_t *host_op_id) { 711 return 0; // thread is not in a target region 712 } 713 714 OMPT_API_ROUTINE int ompt_get_num_devices(void) { 715 return 1; // only one device (the current device) is available 716 } 717 718 /***************************************************************************** 719 * API inquiry for tool 720 ****************************************************************************/ 721 722 static ompt_interface_fn_t ompt_fn_lookup(const char *s) { 723 724 #define ompt_interface_fn(fn) \ 725 fn##_t fn##_f = fn; \ 726 if (strcmp(s, #fn) == 0) \ 727 return (ompt_interface_fn_t)fn##_f; 728 729 FOREACH_OMPT_INQUIRY_FN(ompt_interface_fn) 730 731 return (ompt_interface_fn_t)0; 732 } 733