1 /* 2 * kmp_global.cpp -- KPTS global variables for runtime support library 3 */ 4 5 //===----------------------------------------------------------------------===// 6 // 7 // The LLVM Compiler Infrastructure 8 // 9 // This file is dual licensed under the MIT and the University of Illinois Open 10 // Source Licenses. See LICENSE.txt for details. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #include "kmp.h" 15 #include "kmp_affinity.h" 16 17 kmp_key_t __kmp_gtid_threadprivate_key; 18 19 #if KMP_ARCH_X86 || KMP_ARCH_X86_64 20 kmp_cpuinfo_t __kmp_cpuinfo = {0}; // Not initialized 21 #endif 22 23 #if KMP_STATS_ENABLED 24 #include "kmp_stats.h" 25 // lock for modifying the global __kmp_stats_list 26 kmp_tas_lock_t __kmp_stats_lock; 27 28 // global list of per thread stats, the head is a sentinel node which 29 // accumulates all stats produced before __kmp_create_worker is called. 30 kmp_stats_list *__kmp_stats_list; 31 32 // thread local pointer to stats node within list 33 KMP_THREAD_LOCAL kmp_stats_list *__kmp_stats_thread_ptr = NULL; 34 35 // gives reference tick for all events (considered the 0 tick) 36 tsc_tick_count __kmp_stats_start_time; 37 #endif 38 39 /* ----------------------------------------------------- */ 40 /* INITIALIZATION VARIABLES */ 41 /* they are syncronized to write during init, but read anytime */ 42 volatile int __kmp_init_serial = FALSE; 43 volatile int __kmp_init_gtid = FALSE; 44 volatile int __kmp_init_common = FALSE; 45 volatile int __kmp_init_middle = FALSE; 46 volatile int __kmp_init_parallel = FALSE; 47 #if KMP_USE_MONITOR 48 volatile int __kmp_init_monitor = 49 0; /* 1 - launched, 2 - actually started (Windows* OS only) */ 50 #endif 51 volatile int __kmp_init_user_locks = FALSE; 52 53 /* list of address of allocated caches for commons */ 54 kmp_cached_addr_t *__kmp_threadpriv_cache_list = NULL; 55 56 int __kmp_init_counter = 0; 57 int __kmp_root_counter = 0; 58 int __kmp_version = 0; 59 60 volatile kmp_uint32 __kmp_team_counter = 0; 61 volatile kmp_uint32 __kmp_task_counter = 0; 62 63 unsigned int __kmp_init_wait = 64 KMP_DEFAULT_INIT_WAIT; /* initial number of spin-tests */ 65 unsigned int __kmp_next_wait = 66 KMP_DEFAULT_NEXT_WAIT; /* susequent number of spin-tests */ 67 68 size_t __kmp_stksize = KMP_DEFAULT_STKSIZE; 69 #if KMP_USE_MONITOR 70 size_t __kmp_monitor_stksize = 0; // auto adjust 71 #endif 72 size_t __kmp_stkoffset = KMP_DEFAULT_STKOFFSET; 73 int __kmp_stkpadding = KMP_MIN_STKPADDING; 74 75 size_t __kmp_malloc_pool_incr = KMP_DEFAULT_MALLOC_POOL_INCR; 76 77 // Barrier method defaults, settings, and strings. 78 // branch factor = 2^branch_bits (only relevant for tree & hyper barrier types) 79 #if KMP_ARCH_X86_64 80 kmp_uint32 __kmp_barrier_gather_bb_dflt = 2; 81 /* branch_factor = 4 */ /* hyper2: C78980 */ 82 kmp_uint32 __kmp_barrier_release_bb_dflt = 2; 83 /* branch_factor = 4 */ /* hyper2: C78980 */ 84 #else 85 kmp_uint32 __kmp_barrier_gather_bb_dflt = 2; 86 /* branch_factor = 4 */ /* communication in core for MIC */ 87 kmp_uint32 __kmp_barrier_release_bb_dflt = 2; 88 /* branch_factor = 4 */ /* communication in core for MIC */ 89 #endif // KMP_ARCH_X86_64 90 #if KMP_ARCH_X86_64 91 kmp_bar_pat_e __kmp_barrier_gather_pat_dflt = bp_hyper_bar; /* hyper2: C78980 */ 92 kmp_bar_pat_e __kmp_barrier_release_pat_dflt = 93 bp_hyper_bar; /* hyper2: C78980 */ 94 #else 95 kmp_bar_pat_e __kmp_barrier_gather_pat_dflt = bp_linear_bar; 96 kmp_bar_pat_e __kmp_barrier_release_pat_dflt = bp_linear_bar; 97 #endif 98 kmp_uint32 __kmp_barrier_gather_branch_bits[bs_last_barrier] = {0}; 99 kmp_uint32 __kmp_barrier_release_branch_bits[bs_last_barrier] = {0}; 100 kmp_bar_pat_e __kmp_barrier_gather_pattern[bs_last_barrier] = {bp_linear_bar}; 101 kmp_bar_pat_e __kmp_barrier_release_pattern[bs_last_barrier] = {bp_linear_bar}; 102 char const *__kmp_barrier_branch_bit_env_name[bs_last_barrier] = { 103 "KMP_PLAIN_BARRIER", "KMP_FORKJOIN_BARRIER" 104 #if KMP_FAST_REDUCTION_BARRIER 105 , 106 "KMP_REDUCTION_BARRIER" 107 #endif // KMP_FAST_REDUCTION_BARRIER 108 }; 109 char const *__kmp_barrier_pattern_env_name[bs_last_barrier] = { 110 "KMP_PLAIN_BARRIER_PATTERN", "KMP_FORKJOIN_BARRIER_PATTERN" 111 #if KMP_FAST_REDUCTION_BARRIER 112 , 113 "KMP_REDUCTION_BARRIER_PATTERN" 114 #endif // KMP_FAST_REDUCTION_BARRIER 115 }; 116 char const *__kmp_barrier_type_name[bs_last_barrier] = {"plain", "forkjoin" 117 #if KMP_FAST_REDUCTION_BARRIER 118 , 119 "reduction" 120 #endif // KMP_FAST_REDUCTION_BARRIER 121 }; 122 char const *__kmp_barrier_pattern_name[bp_last_bar] = {"linear", "tree", 123 "hyper", "hierarchical"}; 124 125 int __kmp_allThreadsSpecified = 0; 126 size_t __kmp_align_alloc = CACHE_LINE; 127 128 int __kmp_generate_warnings = kmp_warnings_low; 129 int __kmp_reserve_warn = 0; 130 int __kmp_xproc = 0; 131 int __kmp_avail_proc = 0; 132 size_t __kmp_sys_min_stksize = KMP_MIN_STKSIZE; 133 int __kmp_sys_max_nth = KMP_MAX_NTH; 134 int __kmp_max_nth = 0; 135 int __kmp_cg_max_nth = 0; 136 int __kmp_teams_max_nth = 0; 137 int __kmp_threads_capacity = 0; 138 int __kmp_dflt_team_nth = 0; 139 int __kmp_dflt_team_nth_ub = 0; 140 int __kmp_tp_capacity = 0; 141 int __kmp_tp_cached = 0; 142 int __kmp_dflt_nested = FALSE; 143 int __kmp_dispatch_num_buffers = KMP_DFLT_DISP_NUM_BUFF; 144 int __kmp_dflt_max_active_levels = 145 KMP_MAX_ACTIVE_LEVELS_LIMIT; /* max_active_levels limit */ 146 #if KMP_NESTED_HOT_TEAMS 147 int __kmp_hot_teams_mode = 0; /* 0 - free extra threads when reduced */ 148 /* 1 - keep extra threads when reduced */ 149 int __kmp_hot_teams_max_level = 1; /* nesting level of hot teams */ 150 #endif 151 enum library_type __kmp_library = library_none; 152 enum sched_type __kmp_sched = 153 kmp_sch_default; /* scheduling method for runtime scheduling */ 154 enum sched_type __kmp_static = 155 kmp_sch_static_greedy; /* default static scheduling method */ 156 enum sched_type __kmp_guided = 157 kmp_sch_guided_iterative_chunked; /* default guided scheduling method */ 158 enum sched_type __kmp_auto = 159 kmp_sch_guided_analytical_chunked; /* default auto scheduling method */ 160 int __kmp_dflt_blocktime = KMP_DEFAULT_BLOCKTIME; 161 #if KMP_USE_MONITOR 162 int __kmp_monitor_wakeups = KMP_MIN_MONITOR_WAKEUPS; 163 int __kmp_bt_intervals = KMP_INTERVALS_FROM_BLOCKTIME(KMP_DEFAULT_BLOCKTIME, 164 KMP_MIN_MONITOR_WAKEUPS); 165 #endif 166 #ifdef KMP_ADJUST_BLOCKTIME 167 int __kmp_zero_bt = FALSE; 168 #endif /* KMP_ADJUST_BLOCKTIME */ 169 #ifdef KMP_DFLT_NTH_CORES 170 int __kmp_ncores = 0; 171 #endif 172 int __kmp_chunk = 0; 173 int __kmp_abort_delay = 0; 174 #if KMP_OS_LINUX && defined(KMP_TDATA_GTID) 175 int __kmp_gtid_mode = 3; /* use __declspec(thread) TLS to store gtid */ 176 int __kmp_adjust_gtid_mode = FALSE; 177 #elif KMP_OS_WINDOWS 178 int __kmp_gtid_mode = 2; /* use TLS functions to store gtid */ 179 int __kmp_adjust_gtid_mode = FALSE; 180 #else 181 int __kmp_gtid_mode = 0; /* select method to get gtid based on #threads */ 182 int __kmp_adjust_gtid_mode = TRUE; 183 #endif /* KMP_OS_LINUX && defined(KMP_TDATA_GTID) */ 184 #ifdef KMP_TDATA_GTID 185 KMP_THREAD_LOCAL int __kmp_gtid = KMP_GTID_DNE; 186 #endif /* KMP_TDATA_GTID */ 187 int __kmp_tls_gtid_min = INT_MAX; 188 int __kmp_foreign_tp = TRUE; 189 #if KMP_ARCH_X86 || KMP_ARCH_X86_64 190 int __kmp_inherit_fp_control = TRUE; 191 kmp_int16 __kmp_init_x87_fpu_control_word = 0; 192 kmp_uint32 __kmp_init_mxcsr = 0; 193 #endif /* KMP_ARCH_X86 || KMP_ARCH_X86_64 */ 194 195 #ifdef USE_LOAD_BALANCE 196 double __kmp_load_balance_interval = 1.0; 197 #endif /* USE_LOAD_BALANCE */ 198 199 kmp_nested_nthreads_t __kmp_nested_nth = {NULL, 0, 0}; 200 201 #if KMP_USE_ADAPTIVE_LOCKS 202 203 kmp_adaptive_backoff_params_t __kmp_adaptive_backoff_params = { 204 1, 1024}; // TODO: tune it! 205 206 #if KMP_DEBUG_ADAPTIVE_LOCKS 207 char *__kmp_speculative_statsfile = "-"; 208 #endif 209 210 #endif // KMP_USE_ADAPTIVE_LOCKS 211 212 #if OMP_40_ENABLED 213 int __kmp_display_env = FALSE; 214 int __kmp_display_env_verbose = FALSE; 215 int __kmp_omp_cancellation = FALSE; 216 #endif 217 218 /* map OMP 3.0 schedule types with our internal schedule types */ 219 enum sched_type __kmp_sch_map[kmp_sched_upper - kmp_sched_lower_ext + 220 kmp_sched_upper_std - kmp_sched_lower - 2] = { 221 kmp_sch_static_chunked, // ==> kmp_sched_static = 1 222 kmp_sch_dynamic_chunked, // ==> kmp_sched_dynamic = 2 223 kmp_sch_guided_chunked, // ==> kmp_sched_guided = 3 224 kmp_sch_auto, // ==> kmp_sched_auto = 4 225 kmp_sch_trapezoidal // ==> kmp_sched_trapezoidal = 101 226 // will likely not be used, introduced here just to debug the code 227 // of public intel extension schedules 228 }; 229 230 #if KMP_OS_LINUX 231 enum clock_function_type __kmp_clock_function; 232 int __kmp_clock_function_param; 233 #endif /* KMP_OS_LINUX */ 234 235 #if KMP_MIC_SUPPORTED 236 enum mic_type __kmp_mic_type = non_mic; 237 #endif 238 239 #if KMP_AFFINITY_SUPPORTED 240 241 KMPAffinity *__kmp_affinity_dispatch = NULL; 242 243 #if KMP_USE_HWLOC 244 int __kmp_hwloc_error = FALSE; 245 hwloc_topology_t __kmp_hwloc_topology = NULL; 246 #endif 247 248 #if KMP_OS_WINDOWS 249 #if KMP_GROUP_AFFINITY 250 int __kmp_num_proc_groups = 1; 251 #endif /* KMP_GROUP_AFFINITY */ 252 kmp_GetActiveProcessorCount_t __kmp_GetActiveProcessorCount = NULL; 253 kmp_GetActiveProcessorGroupCount_t __kmp_GetActiveProcessorGroupCount = NULL; 254 kmp_GetThreadGroupAffinity_t __kmp_GetThreadGroupAffinity = NULL; 255 kmp_SetThreadGroupAffinity_t __kmp_SetThreadGroupAffinity = NULL; 256 #endif /* KMP_OS_WINDOWS */ 257 258 size_t __kmp_affin_mask_size = 0; 259 enum affinity_type __kmp_affinity_type = affinity_default; 260 enum affinity_gran __kmp_affinity_gran = affinity_gran_default; 261 int __kmp_affinity_gran_levels = -1; 262 int __kmp_affinity_dups = TRUE; 263 enum affinity_top_method __kmp_affinity_top_method = 264 affinity_top_method_default; 265 int __kmp_affinity_compact = 0; 266 int __kmp_affinity_offset = 0; 267 int __kmp_affinity_verbose = FALSE; 268 int __kmp_affinity_warnings = TRUE; 269 int __kmp_affinity_respect_mask = affinity_respect_mask_default; 270 char *__kmp_affinity_proclist = NULL; 271 kmp_affin_mask_t *__kmp_affinity_masks = NULL; 272 unsigned __kmp_affinity_num_masks = 0; 273 274 char const *__kmp_cpuinfo_file = NULL; 275 276 #endif /* KMP_AFFINITY_SUPPORTED */ 277 278 #if OMP_40_ENABLED 279 kmp_nested_proc_bind_t __kmp_nested_proc_bind = {NULL, 0, 0}; 280 int __kmp_affinity_num_places = 0; 281 #endif 282 283 kmp_hws_item_t __kmp_hws_socket = {0, 0}; 284 kmp_hws_item_t __kmp_hws_node = {0, 0}; 285 kmp_hws_item_t __kmp_hws_tile = {0, 0}; 286 kmp_hws_item_t __kmp_hws_core = {0, 0}; 287 kmp_hws_item_t __kmp_hws_proc = {0, 0}; 288 int __kmp_hws_requested = 0; 289 int __kmp_hws_abs_flag = 0; // absolute or per-item number requested 290 291 #if OMP_40_ENABLED 292 kmp_int32 __kmp_default_device = 0; 293 #endif 294 295 kmp_tasking_mode_t __kmp_tasking_mode = tskm_task_teams; 296 #if OMP_45_ENABLED 297 kmp_int32 __kmp_max_task_priority = 0; 298 kmp_uint64 __kmp_taskloop_min_tasks = 0; 299 #endif 300 301 #if OMP_50_ENABLED && OMPT_SUPPORT 302 char const *__kmp_tool_libraries = NULL; 303 #endif 304 305 /* This check ensures that the compiler is passing the correct data type for the 306 flags formal parameter of the function kmpc_omp_task_alloc(). If the type is 307 not a 4-byte type, then give an error message about a non-positive length 308 array pointing here. If that happens, the kmp_tasking_flags_t structure must 309 be redefined to have exactly 32 bits. */ 310 KMP_BUILD_ASSERT(sizeof(kmp_tasking_flags_t) == 4); 311 312 kmp_int32 __kmp_task_stealing_constraint = 313 1; /* Constrain task stealing by default */ 314 315 #ifdef DEBUG_SUSPEND 316 int __kmp_suspend_count = 0; 317 #endif 318 319 int __kmp_settings = FALSE; 320 int __kmp_duplicate_library_ok = 0; 321 #if USE_ITT_BUILD 322 int __kmp_forkjoin_frames = 1; 323 int __kmp_forkjoin_frames_mode = 3; 324 #endif 325 PACKED_REDUCTION_METHOD_T __kmp_force_reduction_method = 326 reduction_method_not_defined; 327 int __kmp_determ_red = FALSE; 328 329 #ifdef KMP_DEBUG 330 int kmp_a_debug = 0; 331 int kmp_b_debug = 0; 332 int kmp_c_debug = 0; 333 int kmp_d_debug = 0; 334 int kmp_e_debug = 0; 335 int kmp_f_debug = 0; 336 int kmp_diag = 0; 337 #endif 338 339 /* For debug information logging using rotating buffer */ 340 int __kmp_debug_buf = 341 FALSE; /* TRUE means use buffer, FALSE means print to stderr */ 342 int __kmp_debug_buf_lines = 343 KMP_DEBUG_BUF_LINES_INIT; /* Lines of debug stored in buffer */ 344 int __kmp_debug_buf_chars = 345 KMP_DEBUG_BUF_CHARS_INIT; /* Characters allowed per line in buffer */ 346 int __kmp_debug_buf_atomic = 347 FALSE; /* TRUE means use atomic update of buffer entry pointer */ 348 349 char *__kmp_debug_buffer = NULL; /* Debug buffer itself */ 350 int __kmp_debug_count = 351 0; /* Counter for number of lines printed in buffer so far */ 352 int __kmp_debug_buf_warn_chars = 353 0; /* Keep track of char increase recommended in warnings */ 354 /* end rotating debug buffer */ 355 356 #ifdef KMP_DEBUG 357 int __kmp_par_range; /* +1 => only go par for constructs in range */ 358 /* -1 => only go par for constructs outside range */ 359 char __kmp_par_range_routine[KMP_PAR_RANGE_ROUTINE_LEN] = {'\0'}; 360 char __kmp_par_range_filename[KMP_PAR_RANGE_FILENAME_LEN] = {'\0'}; 361 int __kmp_par_range_lb = 0; 362 int __kmp_par_range_ub = INT_MAX; 363 #endif /* KMP_DEBUG */ 364 365 /* For printing out dynamic storage map for threads and teams */ 366 int __kmp_storage_map = 367 FALSE; /* True means print storage map for threads and teams */ 368 int __kmp_storage_map_verbose = 369 FALSE; /* True means storage map includes placement info */ 370 int __kmp_storage_map_verbose_specified = FALSE; 371 /* Initialize the library data structures when we fork a child process, defaults 372 * to TRUE */ 373 int __kmp_need_register_atfork = 374 TRUE; /* At initialization, call pthread_atfork to install fork handler */ 375 int __kmp_need_register_atfork_specified = TRUE; 376 377 int __kmp_env_stksize = FALSE; /* KMP_STACKSIZE specified? */ 378 int __kmp_env_blocktime = FALSE; /* KMP_BLOCKTIME specified? */ 379 int __kmp_env_checks = FALSE; /* KMP_CHECKS specified? */ 380 int __kmp_env_consistency_check = FALSE; /* KMP_CONSISTENCY_CHECK specified? */ 381 382 kmp_uint32 __kmp_yield_init = KMP_INIT_WAIT; 383 kmp_uint32 __kmp_yield_next = KMP_NEXT_WAIT; 384 385 #if KMP_USE_MONITOR 386 kmp_uint32 __kmp_yielding_on = 1; 387 #endif 388 #if KMP_OS_CNK 389 kmp_uint32 __kmp_yield_cycle = 0; 390 #else 391 kmp_uint32 __kmp_yield_cycle = 1; /* Yield-cycle is on by default */ 392 #endif 393 kmp_int32 __kmp_yield_on_count = 394 10; /* By default, yielding is on for 10 monitor periods. */ 395 kmp_int32 __kmp_yield_off_count = 396 1; /* By default, yielding is off for 1 monitor periods. */ 397 398 /* ------------------------------------------------------ */ 399 /* STATE mostly syncronized with global lock */ 400 /* data written to rarely by masters, read often by workers */ 401 /* TODO: None of this global padding stuff works consistently because the order 402 of declaration is not necessarily correlated to storage order. To fix this, 403 all the important globals must be put in a big structure instead. */ 404 KMP_ALIGN_CACHE 405 kmp_info_t **__kmp_threads = NULL; 406 kmp_root_t **__kmp_root = NULL; 407 408 /* data read/written to often by masters */ 409 KMP_ALIGN_CACHE 410 volatile int __kmp_nth = 0; 411 volatile int __kmp_all_nth = 0; 412 int __kmp_thread_pool_nth = 0; 413 volatile kmp_info_t *__kmp_thread_pool = NULL; 414 volatile kmp_team_t *__kmp_team_pool = NULL; 415 416 KMP_ALIGN_CACHE 417 volatile int __kmp_thread_pool_active_nth = 0; 418 419 /* ------------------------------------------------- 420 * GLOBAL/ROOT STATE */ 421 KMP_ALIGN_CACHE 422 kmp_global_t __kmp_global = {{0}}; 423 424 /* ----------------------------------------------- */ 425 /* GLOBAL SYNCHRONIZATION LOCKS */ 426 /* TODO verify the need for these locks and if they need to be global */ 427 428 #if KMP_USE_INTERNODE_ALIGNMENT 429 /* Multinode systems have larger cache line granularity which can cause 430 * false sharing if the alignment is not large enough for these locks */ 431 KMP_ALIGN_CACHE_INTERNODE 432 433 kmp_bootstrap_lock_t __kmp_initz_lock = KMP_BOOTSTRAP_LOCK_INITIALIZER( 434 __kmp_initz_lock); /* Control initializations */ 435 KMP_ALIGN_CACHE_INTERNODE 436 kmp_bootstrap_lock_t __kmp_forkjoin_lock; /* control fork/join access */ 437 KMP_ALIGN_CACHE_INTERNODE 438 kmp_bootstrap_lock_t __kmp_exit_lock; /* exit() is not always thread-safe */ 439 #if KMP_USE_MONITOR 440 KMP_ALIGN_CACHE_INTERNODE 441 kmp_bootstrap_lock_t __kmp_monitor_lock; /* control monitor thread creation */ 442 #endif 443 /* used for the hack to allow threadprivate cache and __kmp_threads expansion 444 to co-exist */ 445 KMP_ALIGN_CACHE_INTERNODE 446 kmp_bootstrap_lock_t __kmp_tp_cached_lock; 447 448 KMP_ALIGN_CACHE_INTERNODE 449 kmp_lock_t __kmp_global_lock; /* Control OS/global access */ 450 KMP_ALIGN_CACHE_INTERNODE 451 kmp_queuing_lock_t __kmp_dispatch_lock; /* Control dispatch access */ 452 KMP_ALIGN_CACHE_INTERNODE 453 kmp_lock_t __kmp_debug_lock; /* Control I/O access for KMP_DEBUG */ 454 #else 455 KMP_ALIGN_CACHE 456 457 kmp_bootstrap_lock_t __kmp_initz_lock = KMP_BOOTSTRAP_LOCK_INITIALIZER( 458 __kmp_initz_lock); /* Control initializations */ 459 kmp_bootstrap_lock_t __kmp_forkjoin_lock; /* control fork/join access */ 460 kmp_bootstrap_lock_t __kmp_exit_lock; /* exit() is not always thread-safe */ 461 #if KMP_USE_MONITOR 462 kmp_bootstrap_lock_t __kmp_monitor_lock; /* control monitor thread creation */ 463 #endif 464 /* used for the hack to allow threadprivate cache and __kmp_threads expansion 465 to co-exist */ 466 kmp_bootstrap_lock_t __kmp_tp_cached_lock; 467 468 KMP_ALIGN(128) 469 kmp_lock_t __kmp_global_lock; /* Control OS/global access */ 470 KMP_ALIGN(128) 471 kmp_queuing_lock_t __kmp_dispatch_lock; /* Control dispatch access */ 472 KMP_ALIGN(128) 473 kmp_lock_t __kmp_debug_lock; /* Control I/O access for KMP_DEBUG */ 474 #endif 475 476 /* ----------------------------------------------- */ 477 478 #if KMP_HANDLE_SIGNALS 479 /* Signal handling is disabled by default, because it confuses users: In case of 480 sigsegv (or other trouble) in user code signal handler catches the signal, 481 which then "appears" in the monitor thread (when the monitor executes raise() 482 function). Users see signal in the monitor thread and blame OpenMP RTL. 483 484 Grant said signal handling required on some older OSes (Irix?) supported by 485 KAI, because bad applications hung but not aborted. Currently it is not a 486 problem for Linux* OS, OS X* and Windows* OS. 487 488 Grant: Found new hangs for EL4, EL5, and a Fedora Core machine. So I'm 489 putting the default back for now to see if that fixes hangs on those 490 machines. 491 492 2010-04013 Lev: It was a bug in Fortran RTL. Fortran RTL prints a kind of 493 stack backtrace when program is aborting, but the code is not signal-safe. 494 When multiple signals raised at the same time (which occurs in dynamic 495 negative tests because all the worker threads detects the same error), 496 Fortran RTL may hang. The bug finally fixed in Fortran RTL library provided 497 by Steve R., and will be available soon. */ 498 int __kmp_handle_signals = FALSE; 499 #endif 500 501 #ifdef DEBUG_SUSPEND 502 int get_suspend_count_(void) { 503 int count = __kmp_suspend_count; 504 __kmp_suspend_count = 0; 505 return count; 506 } 507 void set_suspend_count_(int *value) { __kmp_suspend_count = *value; } 508 #endif 509 510 // Symbols for MS mutual detection. 511 int _You_must_link_with_exactly_one_OpenMP_library = 1; 512 int _You_must_link_with_Intel_OpenMP_library = 1; 513 #if KMP_OS_WINDOWS && (KMP_VERSION_MAJOR > 4) 514 int _You_must_link_with_Microsoft_OpenMP_library = 1; 515 #endif 516 517 // end of file // 518