1 /* 2 * kmp_global.cpp -- KPTS global variables for runtime support library 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 #include "kmp.h" 14 #include "kmp_affinity.h" 15 #if KMP_USE_HIER_SCHED 16 #include "kmp_dispatch_hier.h" 17 #endif 18 19 kmp_key_t __kmp_gtid_threadprivate_key; 20 21 #if KMP_ARCH_X86 || KMP_ARCH_X86_64 22 kmp_cpuinfo_t __kmp_cpuinfo = {0}; // Not initialized 23 #endif 24 25 #if KMP_STATS_ENABLED 26 #include "kmp_stats.h" 27 // lock for modifying the global __kmp_stats_list 28 kmp_tas_lock_t __kmp_stats_lock; 29 30 // global list of per thread stats, the head is a sentinel node which 31 // accumulates all stats produced before __kmp_create_worker is called. 32 kmp_stats_list *__kmp_stats_list; 33 34 // thread local pointer to stats node within list 35 KMP_THREAD_LOCAL kmp_stats_list *__kmp_stats_thread_ptr = NULL; 36 37 // gives reference tick for all events (considered the 0 tick) 38 tsc_tick_count __kmp_stats_start_time; 39 #endif 40 41 /* ----------------------------------------------------- */ 42 /* INITIALIZATION VARIABLES */ 43 /* they are syncronized to write during init, but read anytime */ 44 volatile int __kmp_init_serial = FALSE; 45 volatile int __kmp_init_gtid = FALSE; 46 volatile int __kmp_init_common = FALSE; 47 volatile int __kmp_init_middle = FALSE; 48 volatile int __kmp_init_parallel = FALSE; 49 #if KMP_USE_MONITOR 50 volatile int __kmp_init_monitor = 51 0; /* 1 - launched, 2 - actually started (Windows* OS only) */ 52 #endif 53 volatile int __kmp_init_user_locks = FALSE; 54 55 /* list of address of allocated caches for commons */ 56 kmp_cached_addr_t *__kmp_threadpriv_cache_list = NULL; 57 58 int __kmp_init_counter = 0; 59 int __kmp_root_counter = 0; 60 int __kmp_version = 0; 61 62 std::atomic<kmp_int32> __kmp_team_counter = ATOMIC_VAR_INIT(0); 63 std::atomic<kmp_int32> __kmp_task_counter = ATOMIC_VAR_INIT(0); 64 65 size_t __kmp_stksize = KMP_DEFAULT_STKSIZE; 66 #if KMP_USE_MONITOR 67 size_t __kmp_monitor_stksize = 0; // auto adjust 68 #endif 69 size_t __kmp_stkoffset = KMP_DEFAULT_STKOFFSET; 70 int __kmp_stkpadding = KMP_MIN_STKPADDING; 71 72 size_t __kmp_malloc_pool_incr = KMP_DEFAULT_MALLOC_POOL_INCR; 73 74 // Barrier method defaults, settings, and strings. 75 // branch factor = 2^branch_bits (only relevant for tree & hyper barrier types) 76 kmp_uint32 __kmp_barrier_gather_bb_dflt = 2; 77 /* branch_factor = 4 */ /* hyper2: C78980 */ 78 kmp_uint32 __kmp_barrier_release_bb_dflt = 2; 79 /* branch_factor = 4 */ /* hyper2: C78980 */ 80 81 kmp_bar_pat_e __kmp_barrier_gather_pat_dflt = bp_hyper_bar; 82 /* hyper2: C78980 */ 83 kmp_bar_pat_e __kmp_barrier_release_pat_dflt = bp_hyper_bar; 84 /* hyper2: C78980 */ 85 86 kmp_uint32 __kmp_barrier_gather_branch_bits[bs_last_barrier] = {0}; 87 kmp_uint32 __kmp_barrier_release_branch_bits[bs_last_barrier] = {0}; 88 kmp_bar_pat_e __kmp_barrier_gather_pattern[bs_last_barrier] = {bp_linear_bar}; 89 kmp_bar_pat_e __kmp_barrier_release_pattern[bs_last_barrier] = {bp_linear_bar}; 90 char const *__kmp_barrier_branch_bit_env_name[bs_last_barrier] = { 91 "KMP_PLAIN_BARRIER", "KMP_FORKJOIN_BARRIER" 92 #if KMP_FAST_REDUCTION_BARRIER 93 , 94 "KMP_REDUCTION_BARRIER" 95 #endif // KMP_FAST_REDUCTION_BARRIER 96 }; 97 char const *__kmp_barrier_pattern_env_name[bs_last_barrier] = { 98 "KMP_PLAIN_BARRIER_PATTERN", "KMP_FORKJOIN_BARRIER_PATTERN" 99 #if KMP_FAST_REDUCTION_BARRIER 100 , 101 "KMP_REDUCTION_BARRIER_PATTERN" 102 #endif // KMP_FAST_REDUCTION_BARRIER 103 }; 104 char const *__kmp_barrier_type_name[bs_last_barrier] = {"plain", "forkjoin" 105 #if KMP_FAST_REDUCTION_BARRIER 106 , 107 "reduction" 108 #endif // KMP_FAST_REDUCTION_BARRIER 109 }; 110 char const *__kmp_barrier_pattern_name[bp_last_bar] = {"linear", "tree", 111 "hyper", "hierarchical"}; 112 113 int __kmp_allThreadsSpecified = 0; 114 size_t __kmp_align_alloc = CACHE_LINE; 115 116 int __kmp_generate_warnings = kmp_warnings_low; 117 int __kmp_reserve_warn = 0; 118 int __kmp_xproc = 0; 119 int __kmp_avail_proc = 0; 120 size_t __kmp_sys_min_stksize = KMP_MIN_STKSIZE; 121 int __kmp_sys_max_nth = KMP_MAX_NTH; 122 int __kmp_max_nth = 0; 123 int __kmp_cg_max_nth = 0; 124 int __kmp_teams_max_nth = 0; 125 int __kmp_threads_capacity = 0; 126 int __kmp_dflt_team_nth = 0; 127 int __kmp_dflt_team_nth_ub = 0; 128 int __kmp_tp_capacity = 0; 129 int __kmp_tp_cached = 0; 130 int __kmp_dispatch_num_buffers = KMP_DFLT_DISP_NUM_BUFF; 131 int __kmp_dflt_max_active_levels = 1; // Nesting off by default 132 bool __kmp_dflt_max_active_levels_set = false; // Don't override set value 133 #if KMP_NESTED_HOT_TEAMS 134 int __kmp_hot_teams_mode = 0; /* 0 - free extra threads when reduced */ 135 /* 1 - keep extra threads when reduced */ 136 int __kmp_hot_teams_max_level = 1; /* nesting level of hot teams */ 137 #endif 138 enum library_type __kmp_library = library_none; 139 enum sched_type __kmp_sched = 140 kmp_sch_default; /* scheduling method for runtime scheduling */ 141 enum sched_type __kmp_static = 142 kmp_sch_static_greedy; /* default static scheduling method */ 143 enum sched_type __kmp_guided = 144 kmp_sch_guided_iterative_chunked; /* default guided scheduling method */ 145 enum sched_type __kmp_auto = 146 kmp_sch_guided_analytical_chunked; /* default auto scheduling method */ 147 #if KMP_USE_HIER_SCHED 148 int __kmp_dispatch_hand_threading = 0; 149 int __kmp_hier_max_units[kmp_hier_layer_e::LAYER_LAST + 1]; 150 int __kmp_hier_threads_per[kmp_hier_layer_e::LAYER_LAST + 1]; 151 kmp_hier_sched_env_t __kmp_hier_scheds = {0, 0, NULL, NULL, NULL}; 152 #endif 153 int __kmp_dflt_blocktime = KMP_DEFAULT_BLOCKTIME; 154 #if KMP_USE_MONITOR 155 int __kmp_monitor_wakeups = KMP_MIN_MONITOR_WAKEUPS; 156 int __kmp_bt_intervals = KMP_INTERVALS_FROM_BLOCKTIME(KMP_DEFAULT_BLOCKTIME, 157 KMP_MIN_MONITOR_WAKEUPS); 158 #endif 159 #ifdef KMP_ADJUST_BLOCKTIME 160 int __kmp_zero_bt = FALSE; 161 #endif /* KMP_ADJUST_BLOCKTIME */ 162 #ifdef KMP_DFLT_NTH_CORES 163 int __kmp_ncores = 0; 164 #endif 165 int __kmp_chunk = 0; 166 int __kmp_abort_delay = 0; 167 #if KMP_OS_LINUX && defined(KMP_TDATA_GTID) 168 int __kmp_gtid_mode = 3; /* use __declspec(thread) TLS to store gtid */ 169 int __kmp_adjust_gtid_mode = FALSE; 170 #elif KMP_OS_WINDOWS 171 int __kmp_gtid_mode = 2; /* use TLS functions to store gtid */ 172 int __kmp_adjust_gtid_mode = FALSE; 173 #else 174 int __kmp_gtid_mode = 0; /* select method to get gtid based on #threads */ 175 int __kmp_adjust_gtid_mode = TRUE; 176 #endif /* KMP_OS_LINUX && defined(KMP_TDATA_GTID) */ 177 #ifdef KMP_TDATA_GTID 178 KMP_THREAD_LOCAL int __kmp_gtid = KMP_GTID_DNE; 179 #endif /* KMP_TDATA_GTID */ 180 int __kmp_tls_gtid_min = INT_MAX; 181 int __kmp_foreign_tp = TRUE; 182 #if KMP_ARCH_X86 || KMP_ARCH_X86_64 183 int __kmp_inherit_fp_control = TRUE; 184 kmp_int16 __kmp_init_x87_fpu_control_word = 0; 185 kmp_uint32 __kmp_init_mxcsr = 0; 186 #endif /* KMP_ARCH_X86 || KMP_ARCH_X86_64 */ 187 188 #ifdef USE_LOAD_BALANCE 189 double __kmp_load_balance_interval = 1.0; 190 #endif /* USE_LOAD_BALANCE */ 191 192 kmp_nested_nthreads_t __kmp_nested_nth = {NULL, 0, 0}; 193 194 #if KMP_USE_ADAPTIVE_LOCKS 195 196 kmp_adaptive_backoff_params_t __kmp_adaptive_backoff_params = { 197 1, 1024}; // TODO: tune it! 198 199 #if KMP_DEBUG_ADAPTIVE_LOCKS 200 const char *__kmp_speculative_statsfile = "-"; 201 #endif 202 203 #endif // KMP_USE_ADAPTIVE_LOCKS 204 205 int __kmp_display_env = FALSE; 206 int __kmp_display_env_verbose = FALSE; 207 int __kmp_omp_cancellation = FALSE; 208 209 /* map OMP 3.0 schedule types with our internal schedule types */ 210 enum sched_type __kmp_sch_map[kmp_sched_upper - kmp_sched_lower_ext + 211 kmp_sched_upper_std - kmp_sched_lower - 2] = { 212 kmp_sch_static_chunked, // ==> kmp_sched_static = 1 213 kmp_sch_dynamic_chunked, // ==> kmp_sched_dynamic = 2 214 kmp_sch_guided_chunked, // ==> kmp_sched_guided = 3 215 kmp_sch_auto, // ==> kmp_sched_auto = 4 216 kmp_sch_trapezoidal // ==> kmp_sched_trapezoidal = 101 217 // will likely not be used, introduced here just to debug the code 218 // of public intel extension schedules 219 }; 220 221 #if KMP_OS_LINUX 222 enum clock_function_type __kmp_clock_function; 223 int __kmp_clock_function_param; 224 #endif /* KMP_OS_LINUX */ 225 226 #if KMP_MIC_SUPPORTED 227 enum mic_type __kmp_mic_type = non_mic; 228 #endif 229 230 #if KMP_AFFINITY_SUPPORTED 231 232 KMPAffinity *__kmp_affinity_dispatch = NULL; 233 234 #if KMP_USE_HWLOC 235 int __kmp_hwloc_error = FALSE; 236 hwloc_topology_t __kmp_hwloc_topology = NULL; 237 int __kmp_numa_detected = FALSE; 238 int __kmp_tile_depth = 0; 239 #endif 240 241 #if KMP_OS_WINDOWS 242 #if KMP_GROUP_AFFINITY 243 int __kmp_num_proc_groups = 1; 244 #endif /* KMP_GROUP_AFFINITY */ 245 kmp_GetActiveProcessorCount_t __kmp_GetActiveProcessorCount = NULL; 246 kmp_GetActiveProcessorGroupCount_t __kmp_GetActiveProcessorGroupCount = NULL; 247 kmp_GetThreadGroupAffinity_t __kmp_GetThreadGroupAffinity = NULL; 248 kmp_SetThreadGroupAffinity_t __kmp_SetThreadGroupAffinity = NULL; 249 #endif /* KMP_OS_WINDOWS */ 250 251 size_t __kmp_affin_mask_size = 0; 252 enum affinity_type __kmp_affinity_type = affinity_default; 253 enum affinity_gran __kmp_affinity_gran = affinity_gran_default; 254 int __kmp_affinity_gran_levels = -1; 255 int __kmp_affinity_dups = TRUE; 256 enum affinity_top_method __kmp_affinity_top_method = 257 affinity_top_method_default; 258 int __kmp_affinity_compact = 0; 259 int __kmp_affinity_offset = 0; 260 int __kmp_affinity_verbose = FALSE; 261 int __kmp_affinity_warnings = TRUE; 262 int __kmp_affinity_respect_mask = affinity_respect_mask_default; 263 char *__kmp_affinity_proclist = NULL; 264 kmp_affin_mask_t *__kmp_affinity_masks = NULL; 265 unsigned __kmp_affinity_num_masks = 0; 266 267 char *__kmp_cpuinfo_file = NULL; 268 269 #endif /* KMP_AFFINITY_SUPPORTED */ 270 271 kmp_nested_proc_bind_t __kmp_nested_proc_bind = {NULL, 0, 0}; 272 int __kmp_affinity_num_places = 0; 273 int __kmp_display_affinity = FALSE; 274 char *__kmp_affinity_format = NULL; 275 276 kmp_hws_item_t __kmp_hws_socket = {0, 0}; 277 kmp_hws_item_t __kmp_hws_node = {0, 0}; 278 kmp_hws_item_t __kmp_hws_tile = {0, 0}; 279 kmp_hws_item_t __kmp_hws_core = {0, 0}; 280 kmp_hws_item_t __kmp_hws_proc = {0, 0}; 281 int __kmp_hws_requested = 0; 282 int __kmp_hws_abs_flag = 0; // absolute or per-item number requested 283 284 kmp_int32 __kmp_default_device = 0; 285 286 kmp_tasking_mode_t __kmp_tasking_mode = tskm_task_teams; 287 kmp_int32 __kmp_max_task_priority = 0; 288 kmp_uint64 __kmp_taskloop_min_tasks = 0; 289 290 int __kmp_memkind_available = 0; 291 omp_allocator_handle_t const omp_null_allocator = NULL; 292 omp_allocator_handle_t const omp_default_mem_alloc = 293 (omp_allocator_handle_t const)1; 294 omp_allocator_handle_t const omp_large_cap_mem_alloc = 295 (omp_allocator_handle_t const)2; 296 omp_allocator_handle_t const omp_const_mem_alloc = 297 (omp_allocator_handle_t const)3; 298 omp_allocator_handle_t const omp_high_bw_mem_alloc = 299 (omp_allocator_handle_t const)4; 300 omp_allocator_handle_t const omp_low_lat_mem_alloc = 301 (omp_allocator_handle_t const)5; 302 omp_allocator_handle_t const omp_cgroup_mem_alloc = 303 (omp_allocator_handle_t const)6; 304 omp_allocator_handle_t const omp_pteam_mem_alloc = 305 (omp_allocator_handle_t const)7; 306 omp_allocator_handle_t const omp_thread_mem_alloc = 307 (omp_allocator_handle_t const)8; 308 omp_allocator_handle_t const kmp_max_mem_alloc = 309 (omp_allocator_handle_t const)1024; 310 omp_allocator_handle_t __kmp_def_allocator = omp_default_mem_alloc; 311 312 omp_memspace_handle_t const omp_default_mem_space = 313 (omp_memspace_handle_t const)0; 314 omp_memspace_handle_t const omp_large_cap_mem_space = 315 (omp_memspace_handle_t const)1; 316 omp_memspace_handle_t const omp_const_mem_space = 317 (omp_memspace_handle_t const)2; 318 omp_memspace_handle_t const omp_high_bw_mem_space = 319 (omp_memspace_handle_t const)3; 320 omp_memspace_handle_t const omp_low_lat_mem_space = 321 (omp_memspace_handle_t const)4; 322 323 /* This check ensures that the compiler is passing the correct data type for the 324 flags formal parameter of the function kmpc_omp_task_alloc(). If the type is 325 not a 4-byte type, then give an error message about a non-positive length 326 array pointing here. If that happens, the kmp_tasking_flags_t structure must 327 be redefined to have exactly 32 bits. */ 328 KMP_BUILD_ASSERT(sizeof(kmp_tasking_flags_t) == 4); 329 330 int __kmp_task_stealing_constraint = 1; /* Constrain task stealing by default */ 331 int __kmp_enable_task_throttling = 1; 332 333 #ifdef DEBUG_SUSPEND 334 int __kmp_suspend_count = 0; 335 #endif 336 337 int __kmp_settings = FALSE; 338 int __kmp_duplicate_library_ok = 0; 339 #if USE_ITT_BUILD 340 int __kmp_forkjoin_frames = 1; 341 int __kmp_forkjoin_frames_mode = 3; 342 #endif 343 PACKED_REDUCTION_METHOD_T __kmp_force_reduction_method = 344 reduction_method_not_defined; 345 int __kmp_determ_red = FALSE; 346 347 #ifdef KMP_DEBUG 348 int kmp_a_debug = 0; 349 int kmp_b_debug = 0; 350 int kmp_c_debug = 0; 351 int kmp_d_debug = 0; 352 int kmp_e_debug = 0; 353 int kmp_f_debug = 0; 354 int kmp_diag = 0; 355 #endif 356 357 /* For debug information logging using rotating buffer */ 358 int __kmp_debug_buf = 359 FALSE; /* TRUE means use buffer, FALSE means print to stderr */ 360 int __kmp_debug_buf_lines = 361 KMP_DEBUG_BUF_LINES_INIT; /* Lines of debug stored in buffer */ 362 int __kmp_debug_buf_chars = 363 KMP_DEBUG_BUF_CHARS_INIT; /* Characters allowed per line in buffer */ 364 int __kmp_debug_buf_atomic = 365 FALSE; /* TRUE means use atomic update of buffer entry pointer */ 366 367 char *__kmp_debug_buffer = NULL; /* Debug buffer itself */ 368 std::atomic<int> __kmp_debug_count = 369 ATOMIC_VAR_INIT(0); /* number of lines printed in buffer so far */ 370 int __kmp_debug_buf_warn_chars = 371 0; /* Keep track of char increase recommended in warnings */ 372 /* end rotating debug buffer */ 373 374 #ifdef KMP_DEBUG 375 int __kmp_par_range; /* +1 => only go par for constructs in range */ 376 /* -1 => only go par for constructs outside range */ 377 char __kmp_par_range_routine[KMP_PAR_RANGE_ROUTINE_LEN] = {'\0'}; 378 char __kmp_par_range_filename[KMP_PAR_RANGE_FILENAME_LEN] = {'\0'}; 379 int __kmp_par_range_lb = 0; 380 int __kmp_par_range_ub = INT_MAX; 381 #endif /* KMP_DEBUG */ 382 383 /* For printing out dynamic storage map for threads and teams */ 384 int __kmp_storage_map = 385 FALSE; /* True means print storage map for threads and teams */ 386 int __kmp_storage_map_verbose = 387 FALSE; /* True means storage map includes placement info */ 388 int __kmp_storage_map_verbose_specified = FALSE; 389 /* Initialize the library data structures when we fork a child process, defaults 390 * to TRUE */ 391 int __kmp_need_register_atfork = 392 TRUE; /* At initialization, call pthread_atfork to install fork handler */ 393 int __kmp_need_register_atfork_specified = TRUE; 394 395 int __kmp_env_stksize = FALSE; /* KMP_STACKSIZE specified? */ 396 int __kmp_env_blocktime = FALSE; /* KMP_BLOCKTIME specified? */ 397 int __kmp_env_checks = FALSE; /* KMP_CHECKS specified? */ 398 int __kmp_env_consistency_check = FALSE; /* KMP_CONSISTENCY_CHECK specified? */ 399 400 // From KMP_USE_YIELD: 401 // 0 = never yield; 402 // 1 = always yield (default); 403 // 2 = yield only if oversubscribed 404 kmp_int32 __kmp_use_yield = 1; 405 // This will be 1 if KMP_USE_YIELD environment variable was set explicitly 406 kmp_int32 __kmp_use_yield_exp_set = 0; 407 408 kmp_uint32 __kmp_yield_init = KMP_INIT_WAIT; 409 kmp_uint32 __kmp_yield_next = KMP_NEXT_WAIT; 410 411 /* ------------------------------------------------------ */ 412 /* STATE mostly syncronized with global lock */ 413 /* data written to rarely by masters, read often by workers */ 414 /* TODO: None of this global padding stuff works consistently because the order 415 of declaration is not necessarily correlated to storage order. To fix this, 416 all the important globals must be put in a big structure instead. */ 417 KMP_ALIGN_CACHE 418 kmp_info_t **__kmp_threads = NULL; 419 kmp_root_t **__kmp_root = NULL; 420 421 /* data read/written to often by masters */ 422 KMP_ALIGN_CACHE 423 volatile int __kmp_nth = 0; 424 volatile int __kmp_all_nth = 0; 425 volatile kmp_info_t *__kmp_thread_pool = NULL; 426 volatile kmp_team_t *__kmp_team_pool = NULL; 427 428 KMP_ALIGN_CACHE 429 std::atomic<int> __kmp_thread_pool_active_nth = ATOMIC_VAR_INIT(0); 430 431 /* ------------------------------------------------- 432 * GLOBAL/ROOT STATE */ 433 KMP_ALIGN_CACHE 434 kmp_global_t __kmp_global; 435 436 /* ----------------------------------------------- */ 437 /* GLOBAL SYNCHRONIZATION LOCKS */ 438 /* TODO verify the need for these locks and if they need to be global */ 439 440 #if KMP_USE_INTERNODE_ALIGNMENT 441 /* Multinode systems have larger cache line granularity which can cause 442 * false sharing if the alignment is not large enough for these locks */ 443 KMP_ALIGN_CACHE_INTERNODE 444 445 KMP_BOOTSTRAP_LOCK_INIT(__kmp_initz_lock); /* Control initializations */ 446 KMP_ALIGN_CACHE_INTERNODE 447 KMP_BOOTSTRAP_LOCK_INIT(__kmp_forkjoin_lock); /* control fork/join access */ 448 KMP_ALIGN_CACHE_INTERNODE 449 KMP_BOOTSTRAP_LOCK_INIT(__kmp_exit_lock); /* exit() is not always thread-safe */ 450 #if KMP_USE_MONITOR 451 /* control monitor thread creation */ 452 KMP_ALIGN_CACHE_INTERNODE 453 KMP_BOOTSTRAP_LOCK_INIT(__kmp_monitor_lock); 454 #endif 455 /* used for the hack to allow threadprivate cache and __kmp_threads expansion 456 to co-exist */ 457 KMP_ALIGN_CACHE_INTERNODE 458 KMP_BOOTSTRAP_LOCK_INIT(__kmp_tp_cached_lock); 459 460 KMP_ALIGN_CACHE_INTERNODE 461 KMP_LOCK_INIT(__kmp_global_lock); /* Control OS/global access */ 462 KMP_ALIGN_CACHE_INTERNODE 463 kmp_queuing_lock_t __kmp_dispatch_lock; /* Control dispatch access */ 464 KMP_ALIGN_CACHE_INTERNODE 465 KMP_LOCK_INIT(__kmp_debug_lock); /* Control I/O access for KMP_DEBUG */ 466 #else 467 KMP_ALIGN_CACHE 468 469 KMP_BOOTSTRAP_LOCK_INIT(__kmp_initz_lock); /* Control initializations */ 470 KMP_BOOTSTRAP_LOCK_INIT(__kmp_forkjoin_lock); /* control fork/join access */ 471 KMP_BOOTSTRAP_LOCK_INIT(__kmp_exit_lock); /* exit() is not always thread-safe */ 472 #if KMP_USE_MONITOR 473 /* control monitor thread creation */ 474 KMP_BOOTSTRAP_LOCK_INIT(__kmp_monitor_lock); 475 #endif 476 /* used for the hack to allow threadprivate cache and __kmp_threads expansion 477 to co-exist */ 478 KMP_BOOTSTRAP_LOCK_INIT(__kmp_tp_cached_lock); 479 480 KMP_ALIGN(128) 481 KMP_LOCK_INIT(__kmp_global_lock); /* Control OS/global access */ 482 KMP_ALIGN(128) 483 kmp_queuing_lock_t __kmp_dispatch_lock; /* Control dispatch access */ 484 KMP_ALIGN(128) 485 KMP_LOCK_INIT(__kmp_debug_lock); /* Control I/O access for KMP_DEBUG */ 486 #endif 487 488 /* ----------------------------------------------- */ 489 490 #if KMP_HANDLE_SIGNALS 491 /* Signal handling is disabled by default, because it confuses users: In case of 492 sigsegv (or other trouble) in user code signal handler catches the signal, 493 which then "appears" in the monitor thread (when the monitor executes raise() 494 function). Users see signal in the monitor thread and blame OpenMP RTL. 495 496 Grant said signal handling required on some older OSes (Irix?) supported by 497 KAI, because bad applications hung but not aborted. Currently it is not a 498 problem for Linux* OS, OS X* and Windows* OS. 499 500 Grant: Found new hangs for EL4, EL5, and a Fedora Core machine. So I'm 501 putting the default back for now to see if that fixes hangs on those 502 machines. 503 504 2010-04013 Lev: It was a bug in Fortran RTL. Fortran RTL prints a kind of 505 stack backtrace when program is aborting, but the code is not signal-safe. 506 When multiple signals raised at the same time (which occurs in dynamic 507 negative tests because all the worker threads detects the same error), 508 Fortran RTL may hang. The bug finally fixed in Fortran RTL library provided 509 by Steve R., and will be available soon. */ 510 int __kmp_handle_signals = FALSE; 511 #endif 512 513 #ifdef DEBUG_SUSPEND 514 int get_suspend_count_(void) { 515 int count = __kmp_suspend_count; 516 __kmp_suspend_count = 0; 517 return count; 518 } 519 void set_suspend_count_(int *value) { __kmp_suspend_count = *value; } 520 #endif 521 522 // Symbols for MS mutual detection. 523 int _You_must_link_with_exactly_one_OpenMP_library = 1; 524 int _You_must_link_with_Intel_OpenMP_library = 1; 525 #if KMP_OS_WINDOWS && (KMP_VERSION_MAJOR > 4) 526 int _You_must_link_with_Microsoft_OpenMP_library = 1; 527 #endif 528 529 kmp_target_offload_kind_t __kmp_target_offload = tgt_default; 530 531 // OMP Pause Resources 532 kmp_pause_status_t __kmp_pause_status = kmp_not_paused; 533 534 // end of file // 535