1 /* 2 * kmp_global.cpp -- KPTS global variables for runtime support library 3 */ 4 5 6 //===----------------------------------------------------------------------===// 7 // 8 // The LLVM Compiler Infrastructure 9 // 10 // This file is dual licensed under the MIT and the University of Illinois Open 11 // Source Licenses. See LICENSE.txt for details. 12 // 13 //===----------------------------------------------------------------------===// 14 15 16 #include "kmp.h" 17 #include "kmp_affinity.h" 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 __thread 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 volatile kmp_uint32 __kmp_team_counter = 0; 63 volatile kmp_uint32 __kmp_task_counter = 0; 64 65 unsigned int __kmp_init_wait = 66 KMP_DEFAULT_INIT_WAIT; /* initial number of spin-tests */ 67 unsigned int __kmp_next_wait = 68 KMP_DEFAULT_NEXT_WAIT; /* susequent number of spin-tests */ 69 70 size_t __kmp_stksize = KMP_DEFAULT_STKSIZE; 71 #if KMP_USE_MONITOR 72 size_t __kmp_monitor_stksize = 0; // auto adjust 73 #endif 74 size_t __kmp_stkoffset = KMP_DEFAULT_STKOFFSET; 75 int __kmp_stkpadding = KMP_MIN_STKPADDING; 76 77 size_t __kmp_malloc_pool_incr = KMP_DEFAULT_MALLOC_POOL_INCR; 78 79 // Barrier method defaults, settings, and strings. 80 // branch factor = 2^branch_bits (only relevant for tree & hyper barrier types) 81 #if KMP_ARCH_X86_64 82 kmp_uint32 __kmp_barrier_gather_bb_dflt = 2; 83 /* branch_factor = 4 */ /* hyper2: C78980 */ 84 kmp_uint32 __kmp_barrier_release_bb_dflt = 2; 85 /* branch_factor = 4 */ /* hyper2: C78980 */ 86 #else 87 kmp_uint32 __kmp_barrier_gather_bb_dflt = 2; 88 /* branch_factor = 4 */ /* communication in core for MIC */ 89 kmp_uint32 __kmp_barrier_release_bb_dflt = 2; 90 /* branch_factor = 4 */ /* communication in core for MIC */ 91 #endif // KMP_ARCH_X86_64 92 #if KMP_ARCH_X86_64 93 kmp_bar_pat_e __kmp_barrier_gather_pat_dflt = bp_hyper_bar; /* hyper2: C78980 */ 94 kmp_bar_pat_e __kmp_barrier_release_pat_dflt = 95 bp_hyper_bar; /* hyper2: C78980 */ 96 #else 97 kmp_bar_pat_e __kmp_barrier_gather_pat_dflt = bp_linear_bar; 98 kmp_bar_pat_e __kmp_barrier_release_pat_dflt = bp_linear_bar; 99 #endif 100 kmp_uint32 __kmp_barrier_gather_branch_bits[bs_last_barrier] = {0}; 101 kmp_uint32 __kmp_barrier_release_branch_bits[bs_last_barrier] = {0}; 102 kmp_bar_pat_e __kmp_barrier_gather_pattern[bs_last_barrier] = {bp_linear_bar}; 103 kmp_bar_pat_e __kmp_barrier_release_pattern[bs_last_barrier] = {bp_linear_bar}; 104 char const *__kmp_barrier_branch_bit_env_name[bs_last_barrier] = { 105 "KMP_PLAIN_BARRIER", "KMP_FORKJOIN_BARRIER" 106 #if KMP_FAST_REDUCTION_BARRIER 107 , 108 "KMP_REDUCTION_BARRIER" 109 #endif // KMP_FAST_REDUCTION_BARRIER 110 }; 111 char const *__kmp_barrier_pattern_env_name[bs_last_barrier] = { 112 "KMP_PLAIN_BARRIER_PATTERN", "KMP_FORKJOIN_BARRIER_PATTERN" 113 #if KMP_FAST_REDUCTION_BARRIER 114 , 115 "KMP_REDUCTION_BARRIER_PATTERN" 116 #endif // KMP_FAST_REDUCTION_BARRIER 117 }; 118 char const *__kmp_barrier_type_name[bs_last_barrier] = {"plain", "forkjoin" 119 #if KMP_FAST_REDUCTION_BARRIER 120 , 121 "reduction" 122 #endif // KMP_FAST_REDUCTION_BARRIER 123 }; 124 char const *__kmp_barrier_pattern_name[bp_last_bar] = {"linear", "tree", 125 "hyper", "hierarchical"}; 126 127 int __kmp_allThreadsSpecified = 0; 128 size_t __kmp_align_alloc = CACHE_LINE; 129 130 131 int __kmp_generate_warnings = kmp_warnings_low; 132 int __kmp_reserve_warn = 0; 133 int __kmp_xproc = 0; 134 int __kmp_avail_proc = 0; 135 size_t __kmp_sys_min_stksize = KMP_MIN_STKSIZE; 136 int __kmp_sys_max_nth = KMP_MAX_NTH; 137 int __kmp_max_nth = 0; 138 int __kmp_cg_max_nth = 0; 139 int __kmp_threads_capacity = 0; 140 int __kmp_dflt_team_nth = 0; 141 int __kmp_dflt_team_nth_ub = 0; 142 int __kmp_tp_capacity = 0; 143 int __kmp_tp_cached = 0; 144 int __kmp_dflt_nested = FALSE; 145 int __kmp_dispatch_num_buffers = KMP_DFLT_DISP_NUM_BUFF; 146 int __kmp_dflt_max_active_levels = 147 KMP_MAX_ACTIVE_LEVELS_LIMIT; /* max_active_levels limit */ 148 #if KMP_NESTED_HOT_TEAMS 149 int __kmp_hot_teams_mode = 0; /* 0 - free extra threads when reduced */ 150 /* 1 - keep extra threads when reduced */ 151 int __kmp_hot_teams_max_level = 1; /* nesting level of hot teams */ 152 #endif 153 enum library_type __kmp_library = library_none; 154 enum sched_type __kmp_sched = 155 kmp_sch_default; /* scheduling method for runtime scheduling */ 156 enum sched_type __kmp_static = 157 kmp_sch_static_greedy; /* default static scheduling method */ 158 enum sched_type __kmp_guided = 159 kmp_sch_guided_iterative_chunked; /* default guided scheduling method */ 160 enum sched_type __kmp_auto = 161 kmp_sch_guided_analytical_chunked; /* default auto scheduling method */ 162 int __kmp_dflt_blocktime = KMP_DEFAULT_BLOCKTIME; 163 #if KMP_USE_MONITOR 164 int __kmp_monitor_wakeups = KMP_MIN_MONITOR_WAKEUPS; 165 int __kmp_bt_intervals = KMP_INTERVALS_FROM_BLOCKTIME(KMP_DEFAULT_BLOCKTIME, 166 KMP_MIN_MONITOR_WAKEUPS); 167 #endif 168 #ifdef KMP_ADJUST_BLOCKTIME 169 int __kmp_zero_bt = FALSE; 170 #endif /* KMP_ADJUST_BLOCKTIME */ 171 #ifdef KMP_DFLT_NTH_CORES 172 int __kmp_ncores = 0; 173 #endif 174 int __kmp_chunk = 0; 175 int __kmp_abort_delay = 0; 176 #if KMP_OS_LINUX && defined(KMP_TDATA_GTID) 177 int __kmp_gtid_mode = 3; /* use __declspec(thread) TLS to store gtid */ 178 int __kmp_adjust_gtid_mode = FALSE; 179 #elif KMP_OS_WINDOWS 180 int __kmp_gtid_mode = 2; /* use TLS functions to store gtid */ 181 int __kmp_adjust_gtid_mode = FALSE; 182 #else 183 int __kmp_gtid_mode = 0; /* select method to get gtid based on #threads */ 184 int __kmp_adjust_gtid_mode = TRUE; 185 #endif /* KMP_OS_LINUX && defined(KMP_TDATA_GTID) */ 186 #ifdef KMP_TDATA_GTID 187 #if KMP_OS_WINDOWS 188 __declspec(thread) int __kmp_gtid = KMP_GTID_DNE; 189 #else 190 __thread int __kmp_gtid = KMP_GTID_DNE; 191 #endif /* KMP_OS_WINDOWS - workaround because Intel(R) Many Integrated Core \ 192 compiler 20110316 doesn't accept __declspec */ 193 #endif /* KMP_TDATA_GTID */ 194 int __kmp_tls_gtid_min = INT_MAX; 195 int __kmp_foreign_tp = TRUE; 196 #if KMP_ARCH_X86 || KMP_ARCH_X86_64 197 int __kmp_inherit_fp_control = TRUE; 198 kmp_int16 __kmp_init_x87_fpu_control_word = 0; 199 kmp_uint32 __kmp_init_mxcsr = 0; 200 #endif /* KMP_ARCH_X86 || KMP_ARCH_X86_64 */ 201 202 #ifdef USE_LOAD_BALANCE 203 double __kmp_load_balance_interval = 1.0; 204 #endif /* USE_LOAD_BALANCE */ 205 206 kmp_nested_nthreads_t __kmp_nested_nth = {NULL, 0, 0}; 207 208 #if KMP_USE_ADAPTIVE_LOCKS 209 210 kmp_adaptive_backoff_params_t __kmp_adaptive_backoff_params = { 211 1, 1024}; // TODO: tune it! 212 213 #if KMP_DEBUG_ADAPTIVE_LOCKS 214 char *__kmp_speculative_statsfile = "-"; 215 #endif 216 217 #endif // KMP_USE_ADAPTIVE_LOCKS 218 219 #if OMP_40_ENABLED 220 int __kmp_display_env = FALSE; 221 int __kmp_display_env_verbose = FALSE; 222 int __kmp_omp_cancellation = FALSE; 223 #endif 224 225 /* map OMP 3.0 schedule types with our internal schedule types */ 226 enum sched_type __kmp_sch_map[kmp_sched_upper - kmp_sched_lower_ext + 227 kmp_sched_upper_std - kmp_sched_lower - 2] = { 228 kmp_sch_static_chunked, // ==> kmp_sched_static = 1 229 kmp_sch_dynamic_chunked, // ==> kmp_sched_dynamic = 2 230 kmp_sch_guided_chunked, // ==> kmp_sched_guided = 3 231 kmp_sch_auto, // ==> kmp_sched_auto = 4 232 kmp_sch_trapezoidal // ==> kmp_sched_trapezoidal = 101 233 // will likely not be used, introduced here just to debug the code 234 // of public intel extension schedules 235 }; 236 237 #if KMP_OS_LINUX 238 enum clock_function_type __kmp_clock_function; 239 int __kmp_clock_function_param; 240 #endif /* KMP_OS_LINUX */ 241 242 #if KMP_MIC_SUPPORTED 243 enum mic_type __kmp_mic_type = non_mic; 244 #endif 245 246 #if KMP_AFFINITY_SUPPORTED 247 248 KMPAffinity *__kmp_affinity_dispatch = NULL; 249 250 #if KMP_USE_HWLOC 251 int __kmp_hwloc_error = FALSE; 252 hwloc_topology_t __kmp_hwloc_topology = NULL; 253 #endif 254 255 #if KMP_OS_WINDOWS 256 #if KMP_GROUP_AFFINITY 257 int __kmp_num_proc_groups = 1; 258 #endif /* KMP_GROUP_AFFINITY */ 259 kmp_GetActiveProcessorCount_t __kmp_GetActiveProcessorCount = NULL; 260 kmp_GetActiveProcessorGroupCount_t __kmp_GetActiveProcessorGroupCount = NULL; 261 kmp_GetThreadGroupAffinity_t __kmp_GetThreadGroupAffinity = NULL; 262 kmp_SetThreadGroupAffinity_t __kmp_SetThreadGroupAffinity = NULL; 263 #endif /* KMP_OS_WINDOWS */ 264 265 size_t __kmp_affin_mask_size = 0; 266 enum affinity_type __kmp_affinity_type = affinity_default; 267 enum affinity_gran __kmp_affinity_gran = affinity_gran_default; 268 int __kmp_affinity_gran_levels = -1; 269 int __kmp_affinity_dups = TRUE; 270 enum affinity_top_method __kmp_affinity_top_method = 271 affinity_top_method_default; 272 int __kmp_affinity_compact = 0; 273 int __kmp_affinity_offset = 0; 274 int __kmp_affinity_verbose = FALSE; 275 int __kmp_affinity_warnings = TRUE; 276 int __kmp_affinity_respect_mask = affinity_respect_mask_default; 277 char *__kmp_affinity_proclist = NULL; 278 kmp_affin_mask_t *__kmp_affinity_masks = NULL; 279 unsigned __kmp_affinity_num_masks = 0; 280 281 char const *__kmp_cpuinfo_file = NULL; 282 283 #endif /* KMP_AFFINITY_SUPPORTED */ 284 285 #if OMP_40_ENABLED 286 kmp_nested_proc_bind_t __kmp_nested_proc_bind = {NULL, 0, 0}; 287 int __kmp_affinity_num_places = 0; 288 #endif 289 290 kmp_hws_item_t __kmp_hws_socket = {0, 0}; 291 kmp_hws_item_t __kmp_hws_node = {0, 0}; 292 kmp_hws_item_t __kmp_hws_tile = {0, 0}; 293 kmp_hws_item_t __kmp_hws_core = {0, 0}; 294 kmp_hws_item_t __kmp_hws_proc = {0, 0}; 295 int __kmp_hws_requested = 0; 296 int __kmp_hws_abs_flag = 0; // absolute or per-item number requested 297 298 #if OMP_40_ENABLED 299 kmp_int32 __kmp_default_device = 0; 300 #endif 301 302 kmp_tasking_mode_t __kmp_tasking_mode = tskm_task_teams; 303 #if OMP_45_ENABLED 304 kmp_int32 __kmp_max_task_priority = 0; 305 kmp_uint64 __kmp_taskloop_min_tasks = 0; 306 #endif 307 308 /* This check ensures that the compiler is passing the correct data type for the 309 flags formal parameter of the function kmpc_omp_task_alloc(). If the type is 310 not a 4-byte type, then give an error message about a non-positive length 311 array pointing here. If that happens, the kmp_tasking_flags_t structure must 312 be redefined to have exactly 32 bits. */ 313 KMP_BUILD_ASSERT(sizeof(kmp_tasking_flags_t) == 4); 314 315 kmp_int32 __kmp_task_stealing_constraint = 316 1; /* Constrain task stealing by default */ 317 318 #ifdef DEBUG_SUSPEND 319 int __kmp_suspend_count = 0; 320 #endif 321 322 int __kmp_settings = FALSE; 323 int __kmp_duplicate_library_ok = 0; 324 #if USE_ITT_BUILD 325 int __kmp_forkjoin_frames = 1; 326 int __kmp_forkjoin_frames_mode = 3; 327 #endif 328 PACKED_REDUCTION_METHOD_T __kmp_force_reduction_method = 329 reduction_method_not_defined; 330 int __kmp_determ_red = FALSE; 331 332 #ifdef KMP_DEBUG 333 int kmp_a_debug = 0; 334 int kmp_b_debug = 0; 335 int kmp_c_debug = 0; 336 int kmp_d_debug = 0; 337 int kmp_e_debug = 0; 338 int kmp_f_debug = 0; 339 int kmp_diag = 0; 340 #endif 341 342 /* For debug information logging using rotating buffer */ 343 int __kmp_debug_buf = 344 FALSE; /* TRUE means use buffer, FALSE means print to stderr */ 345 int __kmp_debug_buf_lines = 346 KMP_DEBUG_BUF_LINES_INIT; /* Lines of debug stored in buffer */ 347 int __kmp_debug_buf_chars = 348 KMP_DEBUG_BUF_CHARS_INIT; /* Characters allowed per line in buffer */ 349 int __kmp_debug_buf_atomic = 350 FALSE; /* TRUE means use atomic update of buffer entry pointer */ 351 352 char *__kmp_debug_buffer = NULL; /* Debug buffer itself */ 353 int __kmp_debug_count = 354 0; /* Counter for number of lines printed in buffer so far */ 355 int __kmp_debug_buf_warn_chars = 356 0; /* Keep track of char increase recommended in warnings */ 357 /* end rotating debug buffer */ 358 359 #ifdef KMP_DEBUG 360 int __kmp_par_range; /* +1 => only go par for constructs in range */ 361 /* -1 => only go par for constructs outside range */ 362 char __kmp_par_range_routine[KMP_PAR_RANGE_ROUTINE_LEN] = {'\0'}; 363 char __kmp_par_range_filename[KMP_PAR_RANGE_FILENAME_LEN] = {'\0'}; 364 int __kmp_par_range_lb = 0; 365 int __kmp_par_range_ub = INT_MAX; 366 #endif /* KMP_DEBUG */ 367 368 /* For printing out dynamic storage map for threads and teams */ 369 int __kmp_storage_map = 370 FALSE; /* True means print storage map for threads and teams */ 371 int __kmp_storage_map_verbose = 372 FALSE; /* True means storage map includes placement info */ 373 int __kmp_storage_map_verbose_specified = FALSE; 374 /* Initialize the library data structures when we fork a child process, defaults 375 * to TRUE */ 376 int __kmp_need_register_atfork = 377 TRUE; /* At initialization, call pthread_atfork to install fork handler */ 378 int __kmp_need_register_atfork_specified = TRUE; 379 380 int __kmp_env_stksize = FALSE; /* KMP_STACKSIZE specified? */ 381 int __kmp_env_blocktime = FALSE; /* KMP_BLOCKTIME specified? */ 382 int __kmp_env_checks = FALSE; /* KMP_CHECKS specified? */ 383 int __kmp_env_consistency_check = FALSE; /* KMP_CONSISTENCY_CHECK specified? */ 384 385 kmp_uint32 __kmp_yield_init = KMP_INIT_WAIT; 386 kmp_uint32 __kmp_yield_next = KMP_NEXT_WAIT; 387 388 #if KMP_USE_MONITOR 389 kmp_uint32 __kmp_yielding_on = 1; 390 #endif 391 #if KMP_OS_CNK 392 kmp_uint32 __kmp_yield_cycle = 0; 393 #else 394 kmp_uint32 __kmp_yield_cycle = 1; /* Yield-cycle is on by default */ 395 #endif 396 kmp_int32 __kmp_yield_on_count = 397 10; /* By default, yielding is on for 10 monitor periods. */ 398 kmp_int32 __kmp_yield_off_count = 399 1; /* By default, yielding is off for 1 monitor periods. */ 400 401 /* ------------------------------------------------------ */ 402 /* STATE mostly syncronized with global lock */ 403 /* data written to rarely by masters, read often by workers */ 404 /* TODO: None of this global padding stuff works consistently because the order 405 of declaration is not necessarily correlated to storage order. To fix this, 406 all the important globals must be put in a big structure instead. */ 407 KMP_ALIGN_CACHE 408 kmp_info_t **__kmp_threads = NULL; 409 kmp_root_t **__kmp_root = NULL; 410 411 /* data read/written to often by masters */ 412 KMP_ALIGN_CACHE 413 volatile int __kmp_nth = 0; 414 volatile int __kmp_all_nth = 0; 415 int __kmp_thread_pool_nth = 0; 416 volatile kmp_info_t *__kmp_thread_pool = NULL; 417 volatile kmp_team_t *__kmp_team_pool = NULL; 418 419 KMP_ALIGN_CACHE 420 volatile int __kmp_thread_pool_active_nth = 0; 421 422 /* ------------------------------------------------- 423 * GLOBAL/ROOT STATE */ 424 KMP_ALIGN_CACHE 425 kmp_global_t __kmp_global = {{0}}; 426 427 /* ----------------------------------------------- */ 428 /* GLOBAL SYNCHRONIZATION LOCKS */ 429 /* TODO verify the need for these locks and if they need to be global */ 430 431 #if KMP_USE_INTERNODE_ALIGNMENT 432 /* Multinode systems have larger cache line granularity which can cause 433 * false sharing if the alignment is not large enough for these locks */ 434 KMP_ALIGN_CACHE_INTERNODE 435 436 kmp_bootstrap_lock_t __kmp_initz_lock = KMP_BOOTSTRAP_LOCK_INITIALIZER( 437 __kmp_initz_lock); /* Control initializations */ 438 KMP_ALIGN_CACHE_INTERNODE 439 kmp_bootstrap_lock_t __kmp_forkjoin_lock; /* control fork/join access */ 440 KMP_ALIGN_CACHE_INTERNODE 441 kmp_bootstrap_lock_t __kmp_exit_lock; /* exit() is not always thread-safe */ 442 #if KMP_USE_MONITOR 443 KMP_ALIGN_CACHE_INTERNODE 444 kmp_bootstrap_lock_t __kmp_monitor_lock; /* control monitor thread creation */ 445 #endif 446 /* used for the hack to allow threadprivate cache and __kmp_threads expansion 447 to co-exist */ 448 KMP_ALIGN_CACHE_INTERNODE 449 kmp_bootstrap_lock_t __kmp_tp_cached_lock; 450 451 KMP_ALIGN_CACHE_INTERNODE 452 kmp_lock_t __kmp_global_lock; /* Control OS/global access */ 453 KMP_ALIGN_CACHE_INTERNODE 454 kmp_queuing_lock_t __kmp_dispatch_lock; /* Control dispatch access */ 455 KMP_ALIGN_CACHE_INTERNODE 456 kmp_lock_t __kmp_debug_lock; /* Control I/O access for KMP_DEBUG */ 457 #else 458 KMP_ALIGN_CACHE 459 460 kmp_bootstrap_lock_t __kmp_initz_lock = KMP_BOOTSTRAP_LOCK_INITIALIZER( 461 __kmp_initz_lock); /* Control initializations */ 462 kmp_bootstrap_lock_t __kmp_forkjoin_lock; /* control fork/join access */ 463 kmp_bootstrap_lock_t __kmp_exit_lock; /* exit() is not always thread-safe */ 464 #if KMP_USE_MONITOR 465 kmp_bootstrap_lock_t __kmp_monitor_lock; /* control monitor thread creation */ 466 #endif 467 /* used for the hack to allow threadprivate cache and __kmp_threads expansion 468 to co-exist */ 469 kmp_bootstrap_lock_t __kmp_tp_cached_lock; 470 471 KMP_ALIGN(128) 472 kmp_lock_t __kmp_global_lock; /* Control OS/global access */ 473 KMP_ALIGN(128) 474 kmp_queuing_lock_t __kmp_dispatch_lock; /* Control dispatch access */ 475 KMP_ALIGN(128) 476 kmp_lock_t __kmp_debug_lock; /* Control I/O access for KMP_DEBUG */ 477 #endif 478 479 /* ----------------------------------------------- */ 480 481 #if KMP_HANDLE_SIGNALS 482 /* Signal handling is disabled by default, because it confuses users: In case of 483 sigsegv (or other trouble) in user code signal handler catches the signal, 484 which then "appears" in the monitor thread (when the monitor executes raise() 485 function). Users see signal in the monitor thread and blame OpenMP RTL. 486 487 Grant said signal handling required on some older OSes (Irix?) supported by 488 KAI, because bad applications hung but not aborted. Currently it is not a 489 problem for Linux* OS, OS X* and Windows* OS. 490 491 Grant: Found new hangs for EL4, EL5, and a Fedora Core machine. So I'm 492 putting the default back for now to see if that fixes hangs on those 493 machines. 494 495 2010-04013 Lev: It was a bug in Fortran RTL. Fortran RTL prints a kind of 496 stack backtrace when program is aborting, but the code is not signal-safe. 497 When multiple signals raised at the same time (which occurs in dynamic 498 negative tests because all the worker threads detects the same error), 499 Fortran RTL may hang. The bug finally fixed in Fortran RTL library provided 500 by Steve R., and will be available soon. */ 501 int __kmp_handle_signals = FALSE; 502 #endif 503 504 /* ----------------------------------------------- */ 505 #ifdef BUILD_TV 506 kmp_key_t __kmp_tv_key = 0; 507 #endif 508 509 /* ------------------------------------------------------------------------ */ 510 511 #ifdef DEBUG_SUSPEND 512 int get_suspend_count_(void) { 513 int count = __kmp_suspend_count; 514 __kmp_suspend_count = 0; 515 return count; 516 } 517 void set_suspend_count_(int *value) { __kmp_suspend_count = *value; } 518 #endif 519 520 // Symbols for MS mutual detection. 521 int _You_must_link_with_exactly_one_OpenMP_library = 1; 522 int _You_must_link_with_Intel_OpenMP_library = 1; 523 #if KMP_OS_WINDOWS && (KMP_VERSION_MAJOR > 4) 524 int _You_must_link_with_Microsoft_OpenMP_library = 1; 525 #endif 526 527 // end of file // 528