1 /*! \file */ 2 /* 3 * kmp.h -- KPTS runtime header file. 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 #ifndef KMP_H 16 #define KMP_H 17 18 #include "kmp_config.h" 19 20 /* #define BUILD_PARALLEL_ORDERED 1 */ 21 22 /* This fix replaces gettimeofday with clock_gettime for better scalability on 23 the Altix. Requires user code to be linked with -lrt. */ 24 //#define FIX_SGI_CLOCK 25 26 /* Defines for OpenMP 3.0 tasking and auto scheduling */ 27 28 #ifndef KMP_STATIC_STEAL_ENABLED 29 #define KMP_STATIC_STEAL_ENABLED 1 30 #endif 31 32 #define TASK_CURRENT_NOT_QUEUED 0 33 #define TASK_CURRENT_QUEUED 1 34 35 #ifdef BUILD_TIED_TASK_STACK 36 #define TASK_STACK_EMPTY 0 // entries when the stack is empty 37 #define TASK_STACK_BLOCK_BITS 5 // Used in TASK_STACK_SIZE and TASK_STACK_MASK 38 // Number of entries in each task stack array 39 #define TASK_STACK_BLOCK_SIZE (1 << TASK_STACK_BLOCK_BITS) 40 // Mask for determining index into stack block 41 #define TASK_STACK_INDEX_MASK (TASK_STACK_BLOCK_SIZE - 1) 42 #endif // BUILD_TIED_TASK_STACK 43 44 #define TASK_NOT_PUSHED 1 45 #define TASK_SUCCESSFULLY_PUSHED 0 46 #define TASK_TIED 1 47 #define TASK_UNTIED 0 48 #define TASK_EXPLICIT 1 49 #define TASK_IMPLICIT 0 50 #define TASK_PROXY 1 51 #define TASK_FULL 0 52 53 #define KMP_CANCEL_THREADS 54 #define KMP_THREAD_ATTR 55 56 // Android does not have pthread_cancel. Undefine KMP_CANCEL_THREADS if being 57 // built on Android 58 #if defined(__ANDROID__) 59 #undef KMP_CANCEL_THREADS 60 #endif 61 62 #include <signal.h> 63 #include <stdarg.h> 64 #include <stddef.h> 65 #include <stdio.h> 66 #include <stdlib.h> 67 #include <string.h> 68 /* include <ctype.h> don't use; problems with /MD on Windows* OS NT due to bad 69 Microsoft library. Some macros provided below to replace these functions */ 70 #ifndef __ABSOFT_WIN 71 #include <sys/types.h> 72 #endif 73 #include <limits.h> 74 #include <time.h> 75 76 #include <errno.h> 77 78 #include "kmp_os.h" 79 80 #include "kmp_safe_c_api.h" 81 82 #if KMP_STATS_ENABLED 83 class kmp_stats_list; 84 #endif 85 86 #if KMP_USE_HIER_SCHED 87 // Only include hierarchical scheduling if affinity is supported 88 #undef KMP_USE_HIER_SCHED 89 #define KMP_USE_HIER_SCHED KMP_AFFINITY_SUPPORTED 90 #endif 91 92 #if KMP_USE_HWLOC && KMP_AFFINITY_SUPPORTED 93 #include "hwloc.h" 94 #ifndef HWLOC_OBJ_NUMANODE 95 #define HWLOC_OBJ_NUMANODE HWLOC_OBJ_NODE 96 #endif 97 #ifndef HWLOC_OBJ_PACKAGE 98 #define HWLOC_OBJ_PACKAGE HWLOC_OBJ_SOCKET 99 #endif 100 #endif 101 102 #if KMP_ARCH_X86 || KMP_ARCH_X86_64 103 #include <xmmintrin.h> 104 #endif 105 106 #include "kmp_debug.h" 107 #include "kmp_lock.h" 108 #include "kmp_version.h" 109 #if USE_DEBUGGER 110 #include "kmp_debugger.h" 111 #endif 112 #include "kmp_i18n.h" 113 114 #define KMP_HANDLE_SIGNALS (KMP_OS_UNIX || KMP_OS_WINDOWS) 115 116 #include "kmp_wrapper_malloc.h" 117 #if KMP_OS_UNIX 118 #include <unistd.h> 119 #if !defined NSIG && defined _NSIG 120 #define NSIG _NSIG 121 #endif 122 #endif 123 124 #if KMP_OS_LINUX 125 #pragma weak clock_gettime 126 #endif 127 128 #if OMPT_SUPPORT 129 #include "ompt-internal.h" 130 #endif 131 132 #if OMP_50_ENABLED 133 // Affinity format function 134 #include "kmp_str.h" 135 #endif 136 137 // 0 - no fast memory allocation, alignment: 8-byte on x86, 16-byte on x64. 138 // 3 - fast allocation using sync, non-sync free lists of any size, non-self 139 // free lists of limited size. 140 #ifndef USE_FAST_MEMORY 141 #define USE_FAST_MEMORY 3 142 #endif 143 144 #ifndef KMP_NESTED_HOT_TEAMS 145 #define KMP_NESTED_HOT_TEAMS 0 146 #define USE_NESTED_HOT_ARG(x) 147 #else 148 #if KMP_NESTED_HOT_TEAMS 149 #if OMP_40_ENABLED 150 #define USE_NESTED_HOT_ARG(x) , x 151 #else 152 // Nested hot teams feature depends on omp 4.0, disable it for earlier versions 153 #undef KMP_NESTED_HOT_TEAMS 154 #define KMP_NESTED_HOT_TEAMS 0 155 #define USE_NESTED_HOT_ARG(x) 156 #endif 157 #else 158 #define USE_NESTED_HOT_ARG(x) 159 #endif 160 #endif 161 162 // Assume using BGET compare_exchange instruction instead of lock by default. 163 #ifndef USE_CMP_XCHG_FOR_BGET 164 #define USE_CMP_XCHG_FOR_BGET 1 165 #endif 166 167 // Test to see if queuing lock is better than bootstrap lock for bget 168 // #ifndef USE_QUEUING_LOCK_FOR_BGET 169 // #define USE_QUEUING_LOCK_FOR_BGET 170 // #endif 171 172 #define KMP_NSEC_PER_SEC 1000000000L 173 #define KMP_USEC_PER_SEC 1000000L 174 175 /*! 176 @ingroup BASIC_TYPES 177 @{ 178 */ 179 180 /*! 181 Values for bit flags used in the ident_t to describe the fields. 182 */ 183 enum { 184 /*! Use trampoline for internal microtasks */ 185 KMP_IDENT_IMB = 0x01, 186 /*! Use c-style ident structure */ 187 KMP_IDENT_KMPC = 0x02, 188 /* 0x04 is no longer used */ 189 /*! Entry point generated by auto-parallelization */ 190 KMP_IDENT_AUTOPAR = 0x08, 191 /*! Compiler generates atomic reduction option for kmpc_reduce* */ 192 KMP_IDENT_ATOMIC_REDUCE = 0x10, 193 /*! To mark a 'barrier' directive in user code */ 194 KMP_IDENT_BARRIER_EXPL = 0x20, 195 /*! To Mark implicit barriers. */ 196 KMP_IDENT_BARRIER_IMPL = 0x0040, 197 KMP_IDENT_BARRIER_IMPL_MASK = 0x01C0, 198 KMP_IDENT_BARRIER_IMPL_FOR = 0x0040, 199 KMP_IDENT_BARRIER_IMPL_SECTIONS = 0x00C0, 200 201 KMP_IDENT_BARRIER_IMPL_SINGLE = 0x0140, 202 KMP_IDENT_BARRIER_IMPL_WORKSHARE = 0x01C0, 203 204 /*! To mark a static loop in OMPT callbacks */ 205 KMP_IDENT_WORK_LOOP = 0x200, 206 /*! To mark a sections directive in OMPT callbacks */ 207 KMP_IDENT_WORK_SECTIONS = 0x400, 208 /*! To mark a distirbute construct in OMPT callbacks */ 209 KMP_IDENT_WORK_DISTRIBUTE = 0x800, 210 /*! Atomic hint; bottom four bits as omp_sync_hint_t. Top four reserved and 211 not currently used. If one day we need more bits, then we can use 212 an invalid combination of hints to mean that another, larger field 213 should be used in a different flag. */ 214 KMP_IDENT_ATOMIC_HINT_MASK = 0xFF0000, 215 KMP_IDENT_ATOMIC_HINT_UNCONTENDED = 0x010000, 216 KMP_IDENT_ATOMIC_HINT_CONTENDED = 0x020000, 217 KMP_IDENT_ATOMIC_HINT_NONSPECULATIVE = 0x040000, 218 KMP_IDENT_ATOMIC_HINT_SPECULATIVE = 0x080000, 219 }; 220 221 /*! 222 * The ident structure that describes a source location. 223 */ 224 typedef struct ident { 225 kmp_int32 reserved_1; /**< might be used in Fortran; see above */ 226 kmp_int32 flags; /**< also f.flags; KMP_IDENT_xxx flags; KMP_IDENT_KMPC 227 identifies this union member */ 228 kmp_int32 reserved_2; /**< not really used in Fortran any more; see above */ 229 #if USE_ITT_BUILD 230 /* but currently used for storing region-specific ITT */ 231 /* contextual information. */ 232 #endif /* USE_ITT_BUILD */ 233 kmp_int32 reserved_3; /**< source[4] in Fortran, do not use for C++ */ 234 char const *psource; /**< String describing the source location. 235 The string is composed of semi-colon separated fields 236 which describe the source file, the function and a pair 237 of line numbers that delimit the construct. */ 238 } ident_t; 239 /*! 240 @} 241 */ 242 243 // Some forward declarations. 244 typedef union kmp_team kmp_team_t; 245 typedef struct kmp_taskdata kmp_taskdata_t; 246 typedef union kmp_task_team kmp_task_team_t; 247 typedef union kmp_team kmp_team_p; 248 typedef union kmp_info kmp_info_p; 249 typedef union kmp_root kmp_root_p; 250 251 #ifdef __cplusplus 252 extern "C" { 253 #endif 254 255 /* ------------------------------------------------------------------------ */ 256 257 /* Pack two 32-bit signed integers into a 64-bit signed integer */ 258 /* ToDo: Fix word ordering for big-endian machines. */ 259 #define KMP_PACK_64(HIGH_32, LOW_32) \ 260 ((kmp_int64)((((kmp_uint64)(HIGH_32)) << 32) | (kmp_uint64)(LOW_32))) 261 262 // Generic string manipulation macros. Assume that _x is of type char * 263 #define SKIP_WS(_x) \ 264 { \ 265 while (*(_x) == ' ' || *(_x) == '\t') \ 266 (_x)++; \ 267 } 268 #define SKIP_DIGITS(_x) \ 269 { \ 270 while (*(_x) >= '0' && *(_x) <= '9') \ 271 (_x)++; \ 272 } 273 #define SKIP_TOKEN(_x) \ 274 { \ 275 while ((*(_x) >= '0' && *(_x) <= '9') || (*(_x) >= 'a' && *(_x) <= 'z') || \ 276 (*(_x) >= 'A' && *(_x) <= 'Z') || *(_x) == '_') \ 277 (_x)++; \ 278 } 279 #define SKIP_TO(_x, _c) \ 280 { \ 281 while (*(_x) != '\0' && *(_x) != (_c)) \ 282 (_x)++; \ 283 } 284 285 /* ------------------------------------------------------------------------ */ 286 287 #define KMP_MAX(x, y) ((x) > (y) ? (x) : (y)) 288 #define KMP_MIN(x, y) ((x) < (y) ? (x) : (y)) 289 290 /* ------------------------------------------------------------------------ */ 291 /* Enumeration types */ 292 293 enum kmp_state_timer { 294 ts_stop, 295 ts_start, 296 ts_pause, 297 298 ts_last_state 299 }; 300 301 enum dynamic_mode { 302 dynamic_default, 303 #ifdef USE_LOAD_BALANCE 304 dynamic_load_balance, 305 #endif /* USE_LOAD_BALANCE */ 306 dynamic_random, 307 dynamic_thread_limit, 308 dynamic_max 309 }; 310 311 /* external schedule constants, duplicate enum omp_sched in omp.h in order to 312 * not include it here */ 313 #ifndef KMP_SCHED_TYPE_DEFINED 314 #define KMP_SCHED_TYPE_DEFINED 315 typedef enum kmp_sched { 316 kmp_sched_lower = 0, // lower and upper bounds are for routine parameter check 317 // Note: need to adjust __kmp_sch_map global array in case enum is changed 318 kmp_sched_static = 1, // mapped to kmp_sch_static_chunked (33) 319 kmp_sched_dynamic = 2, // mapped to kmp_sch_dynamic_chunked (35) 320 kmp_sched_guided = 3, // mapped to kmp_sch_guided_chunked (36) 321 kmp_sched_auto = 4, // mapped to kmp_sch_auto (38) 322 kmp_sched_upper_std = 5, // upper bound for standard schedules 323 kmp_sched_lower_ext = 100, // lower bound of Intel extension schedules 324 kmp_sched_trapezoidal = 101, // mapped to kmp_sch_trapezoidal (39) 325 #if KMP_STATIC_STEAL_ENABLED 326 kmp_sched_static_steal = 102, // mapped to kmp_sch_static_steal (44) 327 #endif 328 kmp_sched_upper, 329 kmp_sched_default = kmp_sched_static // default scheduling 330 } kmp_sched_t; 331 #endif 332 333 /*! 334 @ingroup WORK_SHARING 335 * Describes the loop schedule to be used for a parallel for loop. 336 */ 337 enum sched_type : kmp_int32 { 338 kmp_sch_lower = 32, /**< lower bound for unordered values */ 339 kmp_sch_static_chunked = 33, 340 kmp_sch_static = 34, /**< static unspecialized */ 341 kmp_sch_dynamic_chunked = 35, 342 kmp_sch_guided_chunked = 36, /**< guided unspecialized */ 343 kmp_sch_runtime = 37, 344 kmp_sch_auto = 38, /**< auto */ 345 kmp_sch_trapezoidal = 39, 346 347 /* accessible only through KMP_SCHEDULE environment variable */ 348 kmp_sch_static_greedy = 40, 349 kmp_sch_static_balanced = 41, 350 /* accessible only through KMP_SCHEDULE environment variable */ 351 kmp_sch_guided_iterative_chunked = 42, 352 kmp_sch_guided_analytical_chunked = 43, 353 /* accessible only through KMP_SCHEDULE environment variable */ 354 kmp_sch_static_steal = 44, 355 356 #if OMP_45_ENABLED 357 /* static with chunk adjustment (e.g., simd) */ 358 kmp_sch_static_balanced_chunked = 45, 359 kmp_sch_guided_simd = 46, /**< guided with chunk adjustment */ 360 kmp_sch_runtime_simd = 47, /**< runtime with chunk adjustment */ 361 #endif 362 363 /* accessible only through KMP_SCHEDULE environment variable */ 364 kmp_sch_upper, /**< upper bound for unordered values */ 365 366 kmp_ord_lower = 64, /**< lower bound for ordered values, must be power of 2 */ 367 kmp_ord_static_chunked = 65, 368 kmp_ord_static = 66, /**< ordered static unspecialized */ 369 kmp_ord_dynamic_chunked = 67, 370 kmp_ord_guided_chunked = 68, 371 kmp_ord_runtime = 69, 372 kmp_ord_auto = 70, /**< ordered auto */ 373 kmp_ord_trapezoidal = 71, 374 kmp_ord_upper, /**< upper bound for ordered values */ 375 376 #if OMP_40_ENABLED 377 /* Schedules for Distribute construct */ 378 kmp_distribute_static_chunked = 91, /**< distribute static chunked */ 379 kmp_distribute_static = 92, /**< distribute static unspecialized */ 380 #endif 381 382 /* For the "nomerge" versions, kmp_dispatch_next*() will always return a 383 single iteration/chunk, even if the loop is serialized. For the schedule 384 types listed above, the entire iteration vector is returned if the loop is 385 serialized. This doesn't work for gcc/gcomp sections. */ 386 kmp_nm_lower = 160, /**< lower bound for nomerge values */ 387 388 kmp_nm_static_chunked = 389 (kmp_sch_static_chunked - kmp_sch_lower + kmp_nm_lower), 390 kmp_nm_static = 162, /**< static unspecialized */ 391 kmp_nm_dynamic_chunked = 163, 392 kmp_nm_guided_chunked = 164, /**< guided unspecialized */ 393 kmp_nm_runtime = 165, 394 kmp_nm_auto = 166, /**< auto */ 395 kmp_nm_trapezoidal = 167, 396 397 /* accessible only through KMP_SCHEDULE environment variable */ 398 kmp_nm_static_greedy = 168, 399 kmp_nm_static_balanced = 169, 400 /* accessible only through KMP_SCHEDULE environment variable */ 401 kmp_nm_guided_iterative_chunked = 170, 402 kmp_nm_guided_analytical_chunked = 171, 403 kmp_nm_static_steal = 404 172, /* accessible only through OMP_SCHEDULE environment variable */ 405 406 kmp_nm_ord_static_chunked = 193, 407 kmp_nm_ord_static = 194, /**< ordered static unspecialized */ 408 kmp_nm_ord_dynamic_chunked = 195, 409 kmp_nm_ord_guided_chunked = 196, 410 kmp_nm_ord_runtime = 197, 411 kmp_nm_ord_auto = 198, /**< auto */ 412 kmp_nm_ord_trapezoidal = 199, 413 kmp_nm_upper, /**< upper bound for nomerge values */ 414 415 #if OMP_45_ENABLED 416 /* Support for OpenMP 4.5 monotonic and nonmonotonic schedule modifiers. Since 417 we need to distinguish the three possible cases (no modifier, monotonic 418 modifier, nonmonotonic modifier), we need separate bits for each modifier. 419 The absence of monotonic does not imply nonmonotonic, especially since 4.5 420 says that the behaviour of the "no modifier" case is implementation defined 421 in 4.5, but will become "nonmonotonic" in 5.0. 422 423 Since we're passing a full 32 bit value, we can use a couple of high bits 424 for these flags; out of paranoia we avoid the sign bit. 425 426 These modifiers can be or-ed into non-static schedules by the compiler to 427 pass the additional information. They will be stripped early in the 428 processing in __kmp_dispatch_init when setting up schedules, so most of the 429 code won't ever see schedules with these bits set. */ 430 kmp_sch_modifier_monotonic = 431 (1 << 29), /**< Set if the monotonic schedule modifier was present */ 432 kmp_sch_modifier_nonmonotonic = 433 (1 << 30), /**< Set if the nonmonotonic schedule modifier was present */ 434 435 #define SCHEDULE_WITHOUT_MODIFIERS(s) \ 436 (enum sched_type)( \ 437 (s) & ~(kmp_sch_modifier_nonmonotonic | kmp_sch_modifier_monotonic)) 438 #define SCHEDULE_HAS_MONOTONIC(s) (((s)&kmp_sch_modifier_monotonic) != 0) 439 #define SCHEDULE_HAS_NONMONOTONIC(s) (((s)&kmp_sch_modifier_nonmonotonic) != 0) 440 #define SCHEDULE_HAS_NO_MODIFIERS(s) \ 441 (((s) & (kmp_sch_modifier_nonmonotonic | kmp_sch_modifier_monotonic)) == 0) 442 #else 443 /* By doing this we hope to avoid multiple tests on OMP_45_ENABLED. Compilers 444 can now eliminate tests on compile time constants and dead code that results 445 from them, so we can leave code guarded by such an if in place. */ 446 #define SCHEDULE_WITHOUT_MODIFIERS(s) (s) 447 #define SCHEDULE_HAS_MONOTONIC(s) false 448 #define SCHEDULE_HAS_NONMONOTONIC(s) false 449 #define SCHEDULE_HAS_NO_MODIFIERS(s) true 450 #endif 451 452 kmp_sch_default = kmp_sch_static /**< default scheduling algorithm */ 453 }; 454 455 /* Type to keep runtime schedule set via OMP_SCHEDULE or omp_set_schedule() */ 456 typedef union kmp_r_sched { 457 struct { 458 enum sched_type r_sched_type; 459 int chunk; 460 }; 461 kmp_int64 sched; 462 } kmp_r_sched_t; 463 464 extern enum sched_type __kmp_sch_map[]; // map OMP 3.0 schedule types with our 465 // internal schedule types 466 467 enum library_type { 468 library_none, 469 library_serial, 470 library_turnaround, 471 library_throughput 472 }; 473 474 #if KMP_OS_LINUX 475 enum clock_function_type { 476 clock_function_gettimeofday, 477 clock_function_clock_gettime 478 }; 479 #endif /* KMP_OS_LINUX */ 480 481 #if KMP_MIC_SUPPORTED 482 enum mic_type { non_mic, mic1, mic2, mic3, dummy }; 483 #endif 484 485 /* -- fast reduction stuff ------------------------------------------------ */ 486 487 #undef KMP_FAST_REDUCTION_BARRIER 488 #define KMP_FAST_REDUCTION_BARRIER 1 489 490 #undef KMP_FAST_REDUCTION_CORE_DUO 491 #if KMP_ARCH_X86 || KMP_ARCH_X86_64 492 #define KMP_FAST_REDUCTION_CORE_DUO 1 493 #endif 494 495 enum _reduction_method { 496 reduction_method_not_defined = 0, 497 critical_reduce_block = (1 << 8), 498 atomic_reduce_block = (2 << 8), 499 tree_reduce_block = (3 << 8), 500 empty_reduce_block = (4 << 8) 501 }; 502 503 // Description of the packed_reduction_method variable: 504 // The packed_reduction_method variable consists of two enum types variables 505 // that are packed together into 0-th byte and 1-st byte: 506 // 0: (packed_reduction_method & 0x000000FF) is a 'enum barrier_type' value of 507 // barrier that will be used in fast reduction: bs_plain_barrier or 508 // bs_reduction_barrier 509 // 1: (packed_reduction_method & 0x0000FF00) is a reduction method that will 510 // be used in fast reduction; 511 // Reduction method is of 'enum _reduction_method' type and it's defined the way 512 // so that the bits of 0-th byte are empty, so no need to execute a shift 513 // instruction while packing/unpacking 514 515 #if KMP_FAST_REDUCTION_BARRIER 516 #define PACK_REDUCTION_METHOD_AND_BARRIER(reduction_method, barrier_type) \ 517 ((reduction_method) | (barrier_type)) 518 519 #define UNPACK_REDUCTION_METHOD(packed_reduction_method) \ 520 ((enum _reduction_method)((packed_reduction_method) & (0x0000FF00))) 521 522 #define UNPACK_REDUCTION_BARRIER(packed_reduction_method) \ 523 ((enum barrier_type)((packed_reduction_method) & (0x000000FF))) 524 #else 525 #define PACK_REDUCTION_METHOD_AND_BARRIER(reduction_method, barrier_type) \ 526 (reduction_method) 527 528 #define UNPACK_REDUCTION_METHOD(packed_reduction_method) \ 529 (packed_reduction_method) 530 531 #define UNPACK_REDUCTION_BARRIER(packed_reduction_method) (bs_plain_barrier) 532 #endif 533 534 #define TEST_REDUCTION_METHOD(packed_reduction_method, which_reduction_block) \ 535 ((UNPACK_REDUCTION_METHOD(packed_reduction_method)) == \ 536 (which_reduction_block)) 537 538 #if KMP_FAST_REDUCTION_BARRIER 539 #define TREE_REDUCE_BLOCK_WITH_REDUCTION_BARRIER \ 540 (PACK_REDUCTION_METHOD_AND_BARRIER(tree_reduce_block, bs_reduction_barrier)) 541 542 #define TREE_REDUCE_BLOCK_WITH_PLAIN_BARRIER \ 543 (PACK_REDUCTION_METHOD_AND_BARRIER(tree_reduce_block, bs_plain_barrier)) 544 #endif 545 546 typedef int PACKED_REDUCTION_METHOD_T; 547 548 /* -- end of fast reduction stuff ----------------------------------------- */ 549 550 #if KMP_OS_WINDOWS 551 #define USE_CBLKDATA 552 #if KMP_MSVC_COMPAT 553 #pragma warning(push) 554 #pragma warning(disable : 271 310) 555 #endif 556 #include <windows.h> 557 #if KMP_MSVC_COMPAT 558 #pragma warning(pop) 559 #endif 560 #endif 561 562 #if KMP_OS_UNIX 563 #include <dlfcn.h> 564 #include <pthread.h> 565 #endif 566 567 /* Only Linux* OS and Windows* OS support thread affinity. */ 568 #if KMP_AFFINITY_SUPPORTED 569 570 // GROUP_AFFINITY is already defined for _MSC_VER>=1600 (VS2010 and later). 571 #if KMP_OS_WINDOWS 572 #if _MSC_VER < 1600 && KMP_MSVC_COMPAT 573 typedef struct GROUP_AFFINITY { 574 KAFFINITY Mask; 575 WORD Group; 576 WORD Reserved[3]; 577 } GROUP_AFFINITY; 578 #endif /* _MSC_VER < 1600 */ 579 #if KMP_GROUP_AFFINITY 580 extern int __kmp_num_proc_groups; 581 #else 582 static const int __kmp_num_proc_groups = 1; 583 #endif /* KMP_GROUP_AFFINITY */ 584 typedef DWORD (*kmp_GetActiveProcessorCount_t)(WORD); 585 extern kmp_GetActiveProcessorCount_t __kmp_GetActiveProcessorCount; 586 587 typedef WORD (*kmp_GetActiveProcessorGroupCount_t)(void); 588 extern kmp_GetActiveProcessorGroupCount_t __kmp_GetActiveProcessorGroupCount; 589 590 typedef BOOL (*kmp_GetThreadGroupAffinity_t)(HANDLE, GROUP_AFFINITY *); 591 extern kmp_GetThreadGroupAffinity_t __kmp_GetThreadGroupAffinity; 592 593 typedef BOOL (*kmp_SetThreadGroupAffinity_t)(HANDLE, const GROUP_AFFINITY *, 594 GROUP_AFFINITY *); 595 extern kmp_SetThreadGroupAffinity_t __kmp_SetThreadGroupAffinity; 596 #endif /* KMP_OS_WINDOWS */ 597 598 #if KMP_USE_HWLOC 599 extern hwloc_topology_t __kmp_hwloc_topology; 600 extern int __kmp_hwloc_error; 601 extern int __kmp_numa_detected; 602 extern int __kmp_tile_depth; 603 #endif 604 605 extern size_t __kmp_affin_mask_size; 606 #define KMP_AFFINITY_CAPABLE() (__kmp_affin_mask_size > 0) 607 #define KMP_AFFINITY_DISABLE() (__kmp_affin_mask_size = 0) 608 #define KMP_AFFINITY_ENABLE(mask_size) (__kmp_affin_mask_size = mask_size) 609 #define KMP_CPU_SET_ITERATE(i, mask) \ 610 for (i = (mask)->begin(); (int)i != (mask)->end(); i = (mask)->next(i)) 611 #define KMP_CPU_SET(i, mask) (mask)->set(i) 612 #define KMP_CPU_ISSET(i, mask) (mask)->is_set(i) 613 #define KMP_CPU_CLR(i, mask) (mask)->clear(i) 614 #define KMP_CPU_ZERO(mask) (mask)->zero() 615 #define KMP_CPU_COPY(dest, src) (dest)->copy(src) 616 #define KMP_CPU_AND(dest, src) (dest)->bitwise_and(src) 617 #define KMP_CPU_COMPLEMENT(max_bit_number, mask) (mask)->bitwise_not() 618 #define KMP_CPU_UNION(dest, src) (dest)->bitwise_or(src) 619 #define KMP_CPU_ALLOC(ptr) (ptr = __kmp_affinity_dispatch->allocate_mask()) 620 #define KMP_CPU_FREE(ptr) __kmp_affinity_dispatch->deallocate_mask(ptr) 621 #define KMP_CPU_ALLOC_ON_STACK(ptr) KMP_CPU_ALLOC(ptr) 622 #define KMP_CPU_FREE_FROM_STACK(ptr) KMP_CPU_FREE(ptr) 623 #define KMP_CPU_INTERNAL_ALLOC(ptr) KMP_CPU_ALLOC(ptr) 624 #define KMP_CPU_INTERNAL_FREE(ptr) KMP_CPU_FREE(ptr) 625 #define KMP_CPU_INDEX(arr, i) __kmp_affinity_dispatch->index_mask_array(arr, i) 626 #define KMP_CPU_ALLOC_ARRAY(arr, n) \ 627 (arr = __kmp_affinity_dispatch->allocate_mask_array(n)) 628 #define KMP_CPU_FREE_ARRAY(arr, n) \ 629 __kmp_affinity_dispatch->deallocate_mask_array(arr) 630 #define KMP_CPU_INTERNAL_ALLOC_ARRAY(arr, n) KMP_CPU_ALLOC_ARRAY(arr, n) 631 #define KMP_CPU_INTERNAL_FREE_ARRAY(arr, n) KMP_CPU_FREE_ARRAY(arr, n) 632 #define __kmp_get_system_affinity(mask, abort_bool) \ 633 (mask)->get_system_affinity(abort_bool) 634 #define __kmp_set_system_affinity(mask, abort_bool) \ 635 (mask)->set_system_affinity(abort_bool) 636 #define __kmp_get_proc_group(mask) (mask)->get_proc_group() 637 638 class KMPAffinity { 639 public: 640 class Mask { 641 public: 642 void *operator new(size_t n); 643 void operator delete(void *p); 644 void *operator new[](size_t n); 645 void operator delete[](void *p); 646 virtual ~Mask() {} 647 // Set bit i to 1 648 virtual void set(int i) {} 649 // Return bit i 650 virtual bool is_set(int i) const { return false; } 651 // Set bit i to 0 652 virtual void clear(int i) {} 653 // Zero out entire mask 654 virtual void zero() {} 655 // Copy src into this mask 656 virtual void copy(const Mask *src) {} 657 // this &= rhs 658 virtual void bitwise_and(const Mask *rhs) {} 659 // this |= rhs 660 virtual void bitwise_or(const Mask *rhs) {} 661 // this = ~this 662 virtual void bitwise_not() {} 663 // API for iterating over an affinity mask 664 // for (int i = mask->begin(); i != mask->end(); i = mask->next(i)) 665 virtual int begin() const { return 0; } 666 virtual int end() const { return 0; } 667 virtual int next(int previous) const { return 0; } 668 // Set the system's affinity to this affinity mask's value 669 virtual int set_system_affinity(bool abort_on_error) const { return -1; } 670 // Set this affinity mask to the current system affinity 671 virtual int get_system_affinity(bool abort_on_error) { return -1; } 672 // Only 1 DWORD in the mask should have any procs set. 673 // Return the appropriate index, or -1 for an invalid mask. 674 virtual int get_proc_group() const { return -1; } 675 }; 676 void *operator new(size_t n); 677 void operator delete(void *p); 678 // Need virtual destructor 679 virtual ~KMPAffinity() = default; 680 // Determine if affinity is capable 681 virtual void determine_capable(const char *env_var) {} 682 // Bind the current thread to os proc 683 virtual void bind_thread(int proc) {} 684 // Factory functions to allocate/deallocate a mask 685 virtual Mask *allocate_mask() { return nullptr; } 686 virtual void deallocate_mask(Mask *m) {} 687 virtual Mask *allocate_mask_array(int num) { return nullptr; } 688 virtual void deallocate_mask_array(Mask *m) {} 689 virtual Mask *index_mask_array(Mask *m, int index) { return nullptr; } 690 static void pick_api(); 691 static void destroy_api(); 692 enum api_type { 693 NATIVE_OS 694 #if KMP_USE_HWLOC 695 , 696 HWLOC 697 #endif 698 }; 699 virtual api_type get_api_type() const { 700 KMP_ASSERT(0); 701 return NATIVE_OS; 702 } 703 704 private: 705 static bool picked_api; 706 }; 707 708 typedef KMPAffinity::Mask kmp_affin_mask_t; 709 extern KMPAffinity *__kmp_affinity_dispatch; 710 711 // Declare local char buffers with this size for printing debug and info 712 // messages, using __kmp_affinity_print_mask(). 713 #define KMP_AFFIN_MASK_PRINT_LEN 1024 714 715 enum affinity_type { 716 affinity_none = 0, 717 affinity_physical, 718 affinity_logical, 719 affinity_compact, 720 affinity_scatter, 721 affinity_explicit, 722 affinity_balanced, 723 affinity_disabled, // not used outsize the env var parser 724 affinity_default 725 }; 726 727 enum affinity_gran { 728 affinity_gran_fine = 0, 729 affinity_gran_thread, 730 affinity_gran_core, 731 affinity_gran_tile, 732 affinity_gran_numa, 733 affinity_gran_package, 734 affinity_gran_node, 735 #if KMP_GROUP_AFFINITY 736 // The "group" granularity isn't necesssarily coarser than all of the 737 // other levels, but we put it last in the enum. 738 affinity_gran_group, 739 #endif /* KMP_GROUP_AFFINITY */ 740 affinity_gran_default 741 }; 742 743 enum affinity_top_method { 744 affinity_top_method_all = 0, // try all (supported) methods, in order 745 #if KMP_ARCH_X86 || KMP_ARCH_X86_64 746 affinity_top_method_apicid, 747 affinity_top_method_x2apicid, 748 #endif /* KMP_ARCH_X86 || KMP_ARCH_X86_64 */ 749 affinity_top_method_cpuinfo, // KMP_CPUINFO_FILE is usable on Windows* OS, too 750 #if KMP_GROUP_AFFINITY 751 affinity_top_method_group, 752 #endif /* KMP_GROUP_AFFINITY */ 753 affinity_top_method_flat, 754 #if KMP_USE_HWLOC 755 affinity_top_method_hwloc, 756 #endif 757 affinity_top_method_default 758 }; 759 760 #define affinity_respect_mask_default (-1) 761 762 extern enum affinity_type __kmp_affinity_type; /* Affinity type */ 763 extern enum affinity_gran __kmp_affinity_gran; /* Affinity granularity */ 764 extern int __kmp_affinity_gran_levels; /* corresponding int value */ 765 extern int __kmp_affinity_dups; /* Affinity duplicate masks */ 766 extern enum affinity_top_method __kmp_affinity_top_method; 767 extern int __kmp_affinity_compact; /* Affinity 'compact' value */ 768 extern int __kmp_affinity_offset; /* Affinity offset value */ 769 extern int __kmp_affinity_verbose; /* Was verbose specified for KMP_AFFINITY? */ 770 extern int __kmp_affinity_warnings; /* KMP_AFFINITY warnings enabled ? */ 771 extern int __kmp_affinity_respect_mask; // Respect process' init affinity mask? 772 extern char *__kmp_affinity_proclist; /* proc ID list */ 773 extern kmp_affin_mask_t *__kmp_affinity_masks; 774 extern unsigned __kmp_affinity_num_masks; 775 extern void __kmp_affinity_bind_thread(int which); 776 777 extern kmp_affin_mask_t *__kmp_affin_fullMask; 778 extern char *__kmp_cpuinfo_file; 779 780 #endif /* KMP_AFFINITY_SUPPORTED */ 781 782 #if OMP_40_ENABLED 783 784 // This needs to be kept in sync with the values in omp.h !!! 785 typedef enum kmp_proc_bind_t { 786 proc_bind_false = 0, 787 proc_bind_true, 788 proc_bind_master, 789 proc_bind_close, 790 proc_bind_spread, 791 proc_bind_intel, // use KMP_AFFINITY interface 792 proc_bind_default 793 } kmp_proc_bind_t; 794 795 typedef struct kmp_nested_proc_bind_t { 796 kmp_proc_bind_t *bind_types; 797 int size; 798 int used; 799 } kmp_nested_proc_bind_t; 800 801 extern kmp_nested_proc_bind_t __kmp_nested_proc_bind; 802 803 #endif /* OMP_40_ENABLED */ 804 805 #if OMP_50_ENABLED 806 extern int __kmp_display_affinity; 807 extern char *__kmp_affinity_format; 808 static const size_t KMP_AFFINITY_FORMAT_SIZE = 512; 809 #endif // OMP_50_ENABLED 810 811 #if KMP_AFFINITY_SUPPORTED 812 #define KMP_PLACE_ALL (-1) 813 #define KMP_PLACE_UNDEFINED (-2) 814 // Is KMP_AFFINITY is being used instead of OMP_PROC_BIND/OMP_PLACES? 815 #define KMP_AFFINITY_NON_PROC_BIND \ 816 ((__kmp_nested_proc_bind.bind_types[0] == proc_bind_false || \ 817 __kmp_nested_proc_bind.bind_types[0] == proc_bind_intel) && \ 818 (__kmp_affinity_num_masks > 0 || __kmp_affinity_type == affinity_balanced)) 819 #endif /* KMP_AFFINITY_SUPPORTED */ 820 821 extern int __kmp_affinity_num_places; 822 823 #if OMP_40_ENABLED 824 typedef enum kmp_cancel_kind_t { 825 cancel_noreq = 0, 826 cancel_parallel = 1, 827 cancel_loop = 2, 828 cancel_sections = 3, 829 cancel_taskgroup = 4 830 } kmp_cancel_kind_t; 831 #endif // OMP_40_ENABLED 832 833 // KMP_HW_SUBSET support: 834 typedef struct kmp_hws_item { 835 int num; 836 int offset; 837 } kmp_hws_item_t; 838 839 extern kmp_hws_item_t __kmp_hws_socket; 840 extern kmp_hws_item_t __kmp_hws_node; 841 extern kmp_hws_item_t __kmp_hws_tile; 842 extern kmp_hws_item_t __kmp_hws_core; 843 extern kmp_hws_item_t __kmp_hws_proc; 844 extern int __kmp_hws_requested; 845 extern int __kmp_hws_abs_flag; // absolute or per-item number requested 846 847 /* ------------------------------------------------------------------------ */ 848 849 #define KMP_PAD(type, sz) \ 850 (sizeof(type) + (sz - ((sizeof(type) - 1) % (sz)) - 1)) 851 852 // We need to avoid using -1 as a GTID as +1 is added to the gtid 853 // when storing it in a lock, and the value 0 is reserved. 854 #define KMP_GTID_DNE (-2) /* Does not exist */ 855 #define KMP_GTID_SHUTDOWN (-3) /* Library is shutting down */ 856 #define KMP_GTID_MONITOR (-4) /* Monitor thread ID */ 857 #define KMP_GTID_UNKNOWN (-5) /* Is not known */ 858 #define KMP_GTID_MIN (-6) /* Minimal gtid for low bound check in DEBUG */ 859 860 #if OMP_50_ENABLED 861 /* OpenMP 5.0 Memory Management support */ 862 extern int __kmp_memkind_available; 863 extern int __kmp_hbw_mem_available; 864 typedef void *omp_allocator_t; 865 extern const omp_allocator_t *OMP_NULL_ALLOCATOR; 866 extern const omp_allocator_t *omp_default_mem_alloc; 867 extern const omp_allocator_t *omp_large_cap_mem_alloc; 868 extern const omp_allocator_t *omp_const_mem_alloc; 869 extern const omp_allocator_t *omp_high_bw_mem_alloc; 870 extern const omp_allocator_t *omp_low_lat_mem_alloc; 871 extern const omp_allocator_t *omp_cgroup_mem_alloc; 872 extern const omp_allocator_t *omp_pteam_mem_alloc; 873 extern const omp_allocator_t *omp_thread_mem_alloc; 874 extern const omp_allocator_t *__kmp_def_allocator; 875 876 extern void __kmpc_set_default_allocator(int gtid, const omp_allocator_t *al); 877 extern const omp_allocator_t *__kmpc_get_default_allocator(int gtid); 878 extern void *__kmpc_alloc(int gtid, size_t sz, const omp_allocator_t *al); 879 extern void __kmpc_free(int gtid, void *ptr, const omp_allocator_t *al); 880 881 extern void __kmp_init_memkind(); 882 extern void __kmp_fini_memkind(); 883 #endif // OMP_50_ENABLED 884 885 /* ------------------------------------------------------------------------ */ 886 887 #define KMP_UINT64_MAX \ 888 (~((kmp_uint64)1 << ((sizeof(kmp_uint64) * (1 << 3)) - 1))) 889 890 #define KMP_MIN_NTH 1 891 892 #ifndef KMP_MAX_NTH 893 #if defined(PTHREAD_THREADS_MAX) && PTHREAD_THREADS_MAX < INT_MAX 894 #define KMP_MAX_NTH PTHREAD_THREADS_MAX 895 #else 896 #define KMP_MAX_NTH INT_MAX 897 #endif 898 #endif /* KMP_MAX_NTH */ 899 900 #ifdef PTHREAD_STACK_MIN 901 #define KMP_MIN_STKSIZE PTHREAD_STACK_MIN 902 #else 903 #define KMP_MIN_STKSIZE ((size_t)(32 * 1024)) 904 #endif 905 906 #define KMP_MAX_STKSIZE (~((size_t)1 << ((sizeof(size_t) * (1 << 3)) - 1))) 907 908 #if KMP_ARCH_X86 909 #define KMP_DEFAULT_STKSIZE ((size_t)(2 * 1024 * 1024)) 910 #elif KMP_ARCH_X86_64 911 #define KMP_DEFAULT_STKSIZE ((size_t)(4 * 1024 * 1024)) 912 #define KMP_BACKUP_STKSIZE ((size_t)(2 * 1024 * 1024)) 913 #else 914 #define KMP_DEFAULT_STKSIZE ((size_t)(1024 * 1024)) 915 #endif 916 917 #define KMP_DEFAULT_MALLOC_POOL_INCR ((size_t)(1024 * 1024)) 918 #define KMP_MIN_MALLOC_POOL_INCR ((size_t)(4 * 1024)) 919 #define KMP_MAX_MALLOC_POOL_INCR \ 920 (~((size_t)1 << ((sizeof(size_t) * (1 << 3)) - 1))) 921 922 #define KMP_MIN_STKOFFSET (0) 923 #define KMP_MAX_STKOFFSET KMP_MAX_STKSIZE 924 #if KMP_OS_DARWIN 925 #define KMP_DEFAULT_STKOFFSET KMP_MIN_STKOFFSET 926 #else 927 #define KMP_DEFAULT_STKOFFSET CACHE_LINE 928 #endif 929 930 #define KMP_MIN_STKPADDING (0) 931 #define KMP_MAX_STKPADDING (2 * 1024 * 1024) 932 933 #define KMP_BLOCKTIME_MULTIPLIER \ 934 (1000) /* number of blocktime units per second */ 935 #define KMP_MIN_BLOCKTIME (0) 936 #define KMP_MAX_BLOCKTIME \ 937 (INT_MAX) /* Must be this for "infinite" setting the work */ 938 #define KMP_DEFAULT_BLOCKTIME (200) /* __kmp_blocktime is in milliseconds */ 939 940 #if KMP_USE_MONITOR 941 #define KMP_DEFAULT_MONITOR_STKSIZE ((size_t)(64 * 1024)) 942 #define KMP_MIN_MONITOR_WAKEUPS (1) // min times monitor wakes up per second 943 #define KMP_MAX_MONITOR_WAKEUPS (1000) // max times monitor can wake up per sec 944 945 /* Calculate new number of monitor wakeups for a specific block time based on 946 previous monitor_wakeups. Only allow increasing number of wakeups */ 947 #define KMP_WAKEUPS_FROM_BLOCKTIME(blocktime, monitor_wakeups) \ 948 (((blocktime) == KMP_MAX_BLOCKTIME) \ 949 ? (monitor_wakeups) \ 950 : ((blocktime) == KMP_MIN_BLOCKTIME) \ 951 ? KMP_MAX_MONITOR_WAKEUPS \ 952 : ((monitor_wakeups) > (KMP_BLOCKTIME_MULTIPLIER / (blocktime))) \ 953 ? (monitor_wakeups) \ 954 : (KMP_BLOCKTIME_MULTIPLIER) / (blocktime)) 955 956 /* Calculate number of intervals for a specific block time based on 957 monitor_wakeups */ 958 #define KMP_INTERVALS_FROM_BLOCKTIME(blocktime, monitor_wakeups) \ 959 (((blocktime) + (KMP_BLOCKTIME_MULTIPLIER / (monitor_wakeups)) - 1) / \ 960 (KMP_BLOCKTIME_MULTIPLIER / (monitor_wakeups))) 961 #else 962 #define KMP_BLOCKTIME(team, tid) \ 963 (get__bt_set(team, tid) ? get__blocktime(team, tid) : __kmp_dflt_blocktime) 964 #if KMP_OS_UNIX && (KMP_ARCH_X86 || KMP_ARCH_X86_64) 965 // HW TSC is used to reduce overhead (clock tick instead of nanosecond). 966 extern kmp_uint64 __kmp_ticks_per_msec; 967 #if KMP_COMPILER_ICC 968 #define KMP_NOW() ((kmp_uint64)_rdtsc()) 969 #else 970 #define KMP_NOW() __kmp_hardware_timestamp() 971 #endif 972 #define KMP_NOW_MSEC() (KMP_NOW() / __kmp_ticks_per_msec) 973 #define KMP_BLOCKTIME_INTERVAL(team, tid) \ 974 (KMP_BLOCKTIME(team, tid) * __kmp_ticks_per_msec) 975 #define KMP_BLOCKING(goal, count) ((goal) > KMP_NOW()) 976 #else 977 // System time is retrieved sporadically while blocking. 978 extern kmp_uint64 __kmp_now_nsec(); 979 #define KMP_NOW() __kmp_now_nsec() 980 #define KMP_NOW_MSEC() (KMP_NOW() / KMP_USEC_PER_SEC) 981 #define KMP_BLOCKTIME_INTERVAL(team, tid) \ 982 (KMP_BLOCKTIME(team, tid) * KMP_USEC_PER_SEC) 983 #define KMP_BLOCKING(goal, count) ((count) % 1000 != 0 || (goal) > KMP_NOW()) 984 #endif 985 #define KMP_YIELD_NOW() \ 986 (KMP_NOW_MSEC() / KMP_MAX(__kmp_dflt_blocktime, 1) % \ 987 (__kmp_yield_on_count + __kmp_yield_off_count) < \ 988 (kmp_uint32)__kmp_yield_on_count) 989 #endif // KMP_USE_MONITOR 990 991 #define KMP_MIN_STATSCOLS 40 992 #define KMP_MAX_STATSCOLS 4096 993 #define KMP_DEFAULT_STATSCOLS 80 994 995 #define KMP_MIN_INTERVAL 0 996 #define KMP_MAX_INTERVAL (INT_MAX - 1) 997 #define KMP_DEFAULT_INTERVAL 0 998 999 #define KMP_MIN_CHUNK 1 1000 #define KMP_MAX_CHUNK (INT_MAX - 1) 1001 #define KMP_DEFAULT_CHUNK 1 1002 1003 #define KMP_MIN_INIT_WAIT 1 1004 #define KMP_MAX_INIT_WAIT (INT_MAX / 2) 1005 #define KMP_DEFAULT_INIT_WAIT 2048U 1006 1007 #define KMP_MIN_NEXT_WAIT 1 1008 #define KMP_MAX_NEXT_WAIT (INT_MAX / 2) 1009 #define KMP_DEFAULT_NEXT_WAIT 1024U 1010 1011 #define KMP_DFLT_DISP_NUM_BUFF 7 1012 #define KMP_MAX_ORDERED 8 1013 1014 #define KMP_MAX_FIELDS 32 1015 1016 #define KMP_MAX_BRANCH_BITS 31 1017 1018 #define KMP_MAX_ACTIVE_LEVELS_LIMIT INT_MAX 1019 1020 #define KMP_MAX_DEFAULT_DEVICE_LIMIT INT_MAX 1021 1022 #define KMP_MAX_TASK_PRIORITY_LIMIT INT_MAX 1023 1024 /* Minimum number of threads before switch to TLS gtid (experimentally 1025 determined) */ 1026 /* josh TODO: what about OS X* tuning? */ 1027 #if KMP_ARCH_X86 || KMP_ARCH_X86_64 1028 #define KMP_TLS_GTID_MIN 5 1029 #else 1030 #define KMP_TLS_GTID_MIN INT_MAX 1031 #endif 1032 1033 #define KMP_MASTER_TID(tid) ((tid) == 0) 1034 #define KMP_WORKER_TID(tid) ((tid) != 0) 1035 1036 #define KMP_MASTER_GTID(gtid) (__kmp_tid_from_gtid((gtid)) == 0) 1037 #define KMP_WORKER_GTID(gtid) (__kmp_tid_from_gtid((gtid)) != 0) 1038 #define KMP_INITIAL_GTID(gtid) ((gtid) == 0) 1039 1040 #ifndef TRUE 1041 #define FALSE 0 1042 #define TRUE (!FALSE) 1043 #endif 1044 1045 /* NOTE: all of the following constants must be even */ 1046 1047 #if KMP_OS_WINDOWS 1048 #define KMP_INIT_WAIT 64U /* initial number of spin-tests */ 1049 #define KMP_NEXT_WAIT 32U /* susequent number of spin-tests */ 1050 #elif KMP_OS_CNK 1051 #define KMP_INIT_WAIT 16U /* initial number of spin-tests */ 1052 #define KMP_NEXT_WAIT 8U /* susequent number of spin-tests */ 1053 #elif KMP_OS_LINUX 1054 #define KMP_INIT_WAIT 1024U /* initial number of spin-tests */ 1055 #define KMP_NEXT_WAIT 512U /* susequent number of spin-tests */ 1056 #elif KMP_OS_DARWIN 1057 /* TODO: tune for KMP_OS_DARWIN */ 1058 #define KMP_INIT_WAIT 1024U /* initial number of spin-tests */ 1059 #define KMP_NEXT_WAIT 512U /* susequent number of spin-tests */ 1060 #elif KMP_OS_DRAGONFLY 1061 /* TODO: tune for KMP_OS_DRAGONFLY */ 1062 #define KMP_INIT_WAIT 1024U /* initial number of spin-tests */ 1063 #define KMP_NEXT_WAIT 512U /* susequent number of spin-tests */ 1064 #elif KMP_OS_FREEBSD 1065 /* TODO: tune for KMP_OS_FREEBSD */ 1066 #define KMP_INIT_WAIT 1024U /* initial number of spin-tests */ 1067 #define KMP_NEXT_WAIT 512U /* susequent number of spin-tests */ 1068 #elif KMP_OS_NETBSD 1069 /* TODO: tune for KMP_OS_NETBSD */ 1070 #define KMP_INIT_WAIT 1024U /* initial number of spin-tests */ 1071 #define KMP_NEXT_WAIT 512U /* susequent number of spin-tests */ 1072 #elif KMP_OS_HURD 1073 /* TODO: tune for KMP_OS_HURD */ 1074 #define KMP_INIT_WAIT 1024U /* initial number of spin-tests */ 1075 #define KMP_NEXT_WAIT 512U /* susequent number of spin-tests */ 1076 #elif KMP_OS_OPENBSD 1077 /* TODO: tune for KMP_OS_OPENBSD */ 1078 #define KMP_INIT_WAIT 1024U /* initial number of spin-tests */ 1079 #define KMP_NEXT_WAIT 512U /* susequent number of spin-tests */ 1080 #endif 1081 1082 #if KMP_ARCH_X86 || KMP_ARCH_X86_64 1083 typedef struct kmp_cpuid { 1084 kmp_uint32 eax; 1085 kmp_uint32 ebx; 1086 kmp_uint32 ecx; 1087 kmp_uint32 edx; 1088 } kmp_cpuid_t; 1089 extern void __kmp_x86_cpuid(int mode, int mode2, struct kmp_cpuid *p); 1090 #if KMP_ARCH_X86 1091 extern void __kmp_x86_pause(void); 1092 #elif KMP_MIC 1093 // Performance testing on KNC (C0QS-7120 P/A/X/D, 61-core, 16 GB Memory) showed 1094 // regression after removal of extra PAUSE from KMP_YIELD_SPIN(). Changing 1095 // the delay from 100 to 300 showed even better performance than double PAUSE 1096 // on Spec OMP2001 and LCPC tasking tests, no regressions on EPCC. 1097 static inline void __kmp_x86_pause(void) { _mm_delay_32(300); } 1098 #else 1099 static inline void __kmp_x86_pause(void) { _mm_pause(); } 1100 #endif 1101 #define KMP_CPU_PAUSE() __kmp_x86_pause() 1102 #elif KMP_ARCH_PPC64 1103 #define KMP_PPC64_PRI_LOW() __asm__ volatile("or 1, 1, 1") 1104 #define KMP_PPC64_PRI_MED() __asm__ volatile("or 2, 2, 2") 1105 #define KMP_PPC64_PRI_LOC_MB() __asm__ volatile("" : : : "memory") 1106 #define KMP_CPU_PAUSE() \ 1107 do { \ 1108 KMP_PPC64_PRI_LOW(); \ 1109 KMP_PPC64_PRI_MED(); \ 1110 KMP_PPC64_PRI_LOC_MB(); \ 1111 } while (0) 1112 #else 1113 #define KMP_CPU_PAUSE() /* nothing to do */ 1114 #endif 1115 1116 #define KMP_INIT_YIELD(count) \ 1117 { (count) = __kmp_yield_init; } 1118 1119 #define KMP_YIELD(cond) \ 1120 { \ 1121 KMP_CPU_PAUSE(); \ 1122 __kmp_yield((cond)); \ 1123 } 1124 1125 // Note the decrement of 2 in the following Macros. With KMP_LIBRARY=turnaround, 1126 // there should be no yielding since initial value from KMP_INIT_YIELD() is odd. 1127 1128 #define KMP_YIELD_WHEN(cond, count) \ 1129 { \ 1130 KMP_CPU_PAUSE(); \ 1131 (count) -= 2; \ 1132 if (!(count)) { \ 1133 __kmp_yield(cond); \ 1134 (count) = __kmp_yield_next; \ 1135 } \ 1136 } 1137 #define KMP_YIELD_SPIN(count) \ 1138 { \ 1139 KMP_CPU_PAUSE(); \ 1140 (count) -= 2; \ 1141 if (!(count)) { \ 1142 __kmp_yield(1); \ 1143 (count) = __kmp_yield_next; \ 1144 } \ 1145 } 1146 1147 /* ------------------------------------------------------------------------ */ 1148 /* Support datatypes for the orphaned construct nesting checks. */ 1149 /* ------------------------------------------------------------------------ */ 1150 1151 enum cons_type { 1152 ct_none, 1153 ct_parallel, 1154 ct_pdo, 1155 ct_pdo_ordered, 1156 ct_psections, 1157 ct_psingle, 1158 1159 /* the following must be left in order and not split up */ 1160 ct_taskq, 1161 ct_task, // really task inside non-ordered taskq, considered worksharing type 1162 ct_task_ordered, /* really task inside ordered taskq, considered a worksharing 1163 type */ 1164 /* the preceding must be left in order and not split up */ 1165 1166 ct_critical, 1167 ct_ordered_in_parallel, 1168 ct_ordered_in_pdo, 1169 ct_ordered_in_taskq, 1170 ct_master, 1171 ct_reduce, 1172 ct_barrier 1173 }; 1174 1175 /* test to see if we are in a taskq construct */ 1176 #define IS_CONS_TYPE_TASKQ(ct) \ 1177 (((int)(ct)) >= ((int)ct_taskq) && ((int)(ct)) <= ((int)ct_task_ordered)) 1178 #define IS_CONS_TYPE_ORDERED(ct) \ 1179 ((ct) == ct_pdo_ordered || (ct) == ct_task_ordered) 1180 1181 struct cons_data { 1182 ident_t const *ident; 1183 enum cons_type type; 1184 int prev; 1185 kmp_user_lock_p 1186 name; /* address exclusively for critical section name comparison */ 1187 }; 1188 1189 struct cons_header { 1190 int p_top, w_top, s_top; 1191 int stack_size, stack_top; 1192 struct cons_data *stack_data; 1193 }; 1194 1195 struct kmp_region_info { 1196 char *text; 1197 int offset[KMP_MAX_FIELDS]; 1198 int length[KMP_MAX_FIELDS]; 1199 }; 1200 1201 /* ---------------------------------------------------------------------- */ 1202 /* ---------------------------------------------------------------------- */ 1203 1204 #if KMP_OS_WINDOWS 1205 typedef HANDLE kmp_thread_t; 1206 typedef DWORD kmp_key_t; 1207 #endif /* KMP_OS_WINDOWS */ 1208 1209 #if KMP_OS_UNIX 1210 typedef pthread_t kmp_thread_t; 1211 typedef pthread_key_t kmp_key_t; 1212 #endif 1213 1214 extern kmp_key_t __kmp_gtid_threadprivate_key; 1215 1216 typedef struct kmp_sys_info { 1217 long maxrss; /* the maximum resident set size utilized (in kilobytes) */ 1218 long minflt; /* the number of page faults serviced without any I/O */ 1219 long majflt; /* the number of page faults serviced that required I/O */ 1220 long nswap; /* the number of times a process was "swapped" out of memory */ 1221 long inblock; /* the number of times the file system had to perform input */ 1222 long oublock; /* the number of times the file system had to perform output */ 1223 long nvcsw; /* the number of times a context switch was voluntarily */ 1224 long nivcsw; /* the number of times a context switch was forced */ 1225 } kmp_sys_info_t; 1226 1227 #if KMP_ARCH_X86 || KMP_ARCH_X86_64 1228 typedef struct kmp_cpuinfo { 1229 int initialized; // If 0, other fields are not initialized. 1230 int signature; // CPUID(1).EAX 1231 int family; // CPUID(1).EAX[27:20]+CPUID(1).EAX[11:8] (Extended Family+Family) 1232 int model; // ( CPUID(1).EAX[19:16] << 4 ) + CPUID(1).EAX[7:4] ( ( Extended 1233 // Model << 4 ) + Model) 1234 int stepping; // CPUID(1).EAX[3:0] ( Stepping ) 1235 int sse2; // 0 if SSE2 instructions are not supported, 1 otherwise. 1236 int rtm; // 0 if RTM instructions are not supported, 1 otherwise. 1237 int cpu_stackoffset; 1238 int apic_id; 1239 int physical_id; 1240 int logical_id; 1241 kmp_uint64 frequency; // Nominal CPU frequency in Hz. 1242 char name[3 * sizeof(kmp_cpuid_t)]; // CPUID(0x80000002,0x80000003,0x80000004) 1243 } kmp_cpuinfo_t; 1244 #endif 1245 1246 #if USE_ITT_BUILD 1247 // We cannot include "kmp_itt.h" due to circular dependency. Declare the only 1248 // required type here. Later we will check the type meets requirements. 1249 typedef int kmp_itt_mark_t; 1250 #define KMP_ITT_DEBUG 0 1251 #endif /* USE_ITT_BUILD */ 1252 1253 /* Taskq data structures */ 1254 1255 #define HIGH_WATER_MARK(nslots) (((nslots)*3) / 4) 1256 // num thunks that each thread can simultaneously execute from a task queue 1257 #define __KMP_TASKQ_THUNKS_PER_TH 1 1258 1259 /* flags for taskq_global_flags, kmp_task_queue_t tq_flags, kmpc_thunk_t 1260 th_flags */ 1261 1262 #define TQF_IS_ORDERED 0x0001 // __kmpc_taskq interface, taskq ordered 1263 // __kmpc_taskq interface, taskq with lastprivate list 1264 #define TQF_IS_LASTPRIVATE 0x0002 1265 #define TQF_IS_NOWAIT 0x0004 // __kmpc_taskq interface, end taskq nowait 1266 // __kmpc_taskq interface, use heuristics to decide task queue size 1267 #define TQF_HEURISTICS 0x0008 1268 1269 // __kmpc_taskq interface, reserved for future use 1270 #define TQF_INTERFACE_RESERVED1 0x0010 1271 // __kmpc_taskq interface, reserved for future use 1272 #define TQF_INTERFACE_RESERVED2 0x0020 1273 // __kmpc_taskq interface, reserved for future use 1274 #define TQF_INTERFACE_RESERVED3 0x0040 1275 // __kmpc_taskq interface, reserved for future use 1276 #define TQF_INTERFACE_RESERVED4 0x0080 1277 1278 #define TQF_INTERFACE_FLAGS 0x00ff // all the __kmpc_taskq interface flags 1279 // internal/read by instrumentation; only used with TQF_IS_LASTPRIVATE 1280 #define TQF_IS_LAST_TASK 0x0100 1281 // internal use only; this thunk->th_task is the taskq_task 1282 #define TQF_TASKQ_TASK 0x0200 1283 // internal use only; must release worker threads once ANY queued task 1284 // exists (global) 1285 #define TQF_RELEASE_WORKERS 0x0400 1286 // internal use only; notify workers that master has finished enqueuing tasks 1287 #define TQF_ALL_TASKS_QUEUED 0x0800 1288 // internal use only: this queue encountered in parallel context: not serialized 1289 #define TQF_PARALLEL_CONTEXT 0x1000 1290 // internal use only; this queue is on the freelist and not in use 1291 #define TQF_DEALLOCATED 0x2000 1292 1293 #define TQF_INTERNAL_FLAGS 0x3f00 // all the internal use only flags 1294 1295 typedef struct KMP_ALIGN_CACHE kmpc_aligned_int32_t { 1296 kmp_int32 ai_data; 1297 } kmpc_aligned_int32_t; 1298 1299 typedef struct KMP_ALIGN_CACHE kmpc_aligned_queue_slot_t { 1300 struct kmpc_thunk_t *qs_thunk; 1301 } kmpc_aligned_queue_slot_t; 1302 1303 typedef struct kmpc_task_queue_t { 1304 /* task queue linkage fields for n-ary tree of queues (locked with global 1305 taskq_tree_lck) */ 1306 kmp_lock_t tq_link_lck; /* lock for child link, child next/prev links and 1307 child ref counts */ 1308 union { 1309 struct kmpc_task_queue_t *tq_parent; // pointer to parent taskq, not locked 1310 // for taskq internal freelists, locked with global taskq_freelist_lck 1311 struct kmpc_task_queue_t *tq_next_free; 1312 } tq; 1313 // pointer to linked-list of children, locked by tq's tq_link_lck 1314 volatile struct kmpc_task_queue_t *tq_first_child; 1315 // next child in linked-list, locked by parent tq's tq_link_lck 1316 struct kmpc_task_queue_t *tq_next_child; 1317 // previous child in linked-list, locked by parent tq's tq_link_lck 1318 struct kmpc_task_queue_t *tq_prev_child; 1319 // reference count of threads with access to this task queue 1320 volatile kmp_int32 tq_ref_count; 1321 /* (other than the thread executing the kmpc_end_taskq call) */ 1322 /* locked by parent tq's tq_link_lck */ 1323 1324 /* shared data for task queue */ 1325 /* per-thread array of pointers to shared variable structures */ 1326 struct kmpc_aligned_shared_vars_t *tq_shareds; 1327 /* only one array element exists for all but outermost taskq */ 1328 1329 /* bookkeeping for ordered task queue */ 1330 kmp_uint32 tq_tasknum_queuing; // ordered task # assigned while queuing tasks 1331 // ordered number of next task to be served (executed) 1332 volatile kmp_uint32 tq_tasknum_serving; 1333 1334 /* thunk storage management for task queue */ 1335 kmp_lock_t tq_free_thunks_lck; /* lock for thunk freelist manipulation */ 1336 // thunk freelist, chained via th.th_next_free 1337 struct kmpc_thunk_t *tq_free_thunks; 1338 // space allocated for thunks for this task queue 1339 struct kmpc_thunk_t *tq_thunk_space; 1340 1341 /* data fields for queue itself */ 1342 kmp_lock_t tq_queue_lck; /* lock for [de]enqueue operations: tq_queue, 1343 tq_head, tq_tail, tq_nfull */ 1344 /* array of queue slots to hold thunks for tasks */ 1345 kmpc_aligned_queue_slot_t *tq_queue; 1346 volatile struct kmpc_thunk_t *tq_taskq_slot; /* special slot for taskq task 1347 thunk, occupied if not NULL */ 1348 kmp_int32 tq_nslots; /* # of tq_thunk_space thunks alloc'd (not incl. 1349 tq_taskq_slot space) */ 1350 kmp_int32 tq_head; // enqueue puts item here (index into tq_queue array) 1351 kmp_int32 tq_tail; // dequeue takes item from here (index into tq_queue array) 1352 volatile kmp_int32 tq_nfull; // # of occupied entries in task queue right now 1353 kmp_int32 tq_hiwat; /* high-water mark for tq_nfull and queue scheduling */ 1354 volatile kmp_int32 tq_flags; /* TQF_xxx */ 1355 1356 /* bookkeeping for outstanding thunks */ 1357 1358 /* per-thread array for # of regular thunks currently being executed */ 1359 struct kmpc_aligned_int32_t *tq_th_thunks; 1360 kmp_int32 tq_nproc; /* number of thunks in the th_thunks array */ 1361 1362 /* statistics library bookkeeping */ 1363 ident_t *tq_loc; /* source location information for taskq directive */ 1364 } kmpc_task_queue_t; 1365 1366 typedef void (*kmpc_task_t)(kmp_int32 global_tid, struct kmpc_thunk_t *thunk); 1367 1368 /* sizeof_shareds passed as arg to __kmpc_taskq call */ 1369 typedef struct kmpc_shared_vars_t { /* aligned during dynamic allocation */ 1370 kmpc_task_queue_t *sv_queue; /* (pointers to) shared vars */ 1371 } kmpc_shared_vars_t; 1372 1373 typedef struct KMP_ALIGN_CACHE kmpc_aligned_shared_vars_t { 1374 volatile struct kmpc_shared_vars_t *ai_data; 1375 } kmpc_aligned_shared_vars_t; 1376 1377 /* sizeof_thunk passed as arg to kmpc_taskq call */ 1378 typedef struct kmpc_thunk_t { /* aligned during dynamic allocation */ 1379 union { /* field used for internal freelists too */ 1380 kmpc_shared_vars_t *th_shareds; 1381 struct kmpc_thunk_t *th_next_free; /* freelist of individual thunks within 1382 queue, head at tq_free_thunks */ 1383 } th; 1384 kmpc_task_t th_task; /* taskq_task if flags & TQF_TASKQ_TASK */ 1385 struct kmpc_thunk_t *th_encl_thunk; /* pointer to dynamically enclosing thunk 1386 on this thread's call stack */ 1387 // TQF_xxx(tq_flags interface plus possible internal flags) 1388 kmp_int32 th_flags; 1389 1390 kmp_int32 th_status; 1391 kmp_uint32 th_tasknum; /* task number assigned in order of queuing, used for 1392 ordered sections */ 1393 /* private vars */ 1394 } kmpc_thunk_t; 1395 1396 typedef struct KMP_ALIGN_CACHE kmp_taskq { 1397 int tq_curr_thunk_capacity; 1398 1399 kmpc_task_queue_t *tq_root; 1400 kmp_int32 tq_global_flags; 1401 1402 kmp_lock_t tq_freelist_lck; 1403 kmpc_task_queue_t *tq_freelist; 1404 1405 kmpc_thunk_t **tq_curr_thunk; 1406 } kmp_taskq_t; 1407 1408 /* END Taskq data structures */ 1409 1410 typedef kmp_int32 kmp_critical_name[8]; 1411 1412 /*! 1413 @ingroup PARALLEL 1414 The type for a microtask which gets passed to @ref __kmpc_fork_call(). 1415 The arguments to the outlined function are 1416 @param global_tid the global thread identity of the thread executing the 1417 function. 1418 @param bound_tid the local identitiy of the thread executing the function 1419 @param ... pointers to shared variables accessed by the function. 1420 */ 1421 typedef void (*kmpc_micro)(kmp_int32 *global_tid, kmp_int32 *bound_tid, ...); 1422 typedef void (*kmpc_micro_bound)(kmp_int32 *bound_tid, kmp_int32 *bound_nth, 1423 ...); 1424 1425 /*! 1426 @ingroup THREADPRIVATE 1427 @{ 1428 */ 1429 /* --------------------------------------------------------------------------- 1430 */ 1431 /* Threadprivate initialization/finalization function declarations */ 1432 1433 /* for non-array objects: __kmpc_threadprivate_register() */ 1434 1435 /*! 1436 Pointer to the constructor function. 1437 The first argument is the <tt>this</tt> pointer 1438 */ 1439 typedef void *(*kmpc_ctor)(void *); 1440 1441 /*! 1442 Pointer to the destructor function. 1443 The first argument is the <tt>this</tt> pointer 1444 */ 1445 typedef void (*kmpc_dtor)( 1446 void * /*, size_t */); /* 2nd arg: magic number for KCC unused by Intel 1447 compiler */ 1448 /*! 1449 Pointer to an alternate constructor. 1450 The first argument is the <tt>this</tt> pointer. 1451 */ 1452 typedef void *(*kmpc_cctor)(void *, void *); 1453 1454 /* for array objects: __kmpc_threadprivate_register_vec() */ 1455 /* First arg: "this" pointer */ 1456 /* Last arg: number of array elements */ 1457 /*! 1458 Array constructor. 1459 First argument is the <tt>this</tt> pointer 1460 Second argument the number of array elements. 1461 */ 1462 typedef void *(*kmpc_ctor_vec)(void *, size_t); 1463 /*! 1464 Pointer to the array destructor function. 1465 The first argument is the <tt>this</tt> pointer 1466 Second argument the number of array elements. 1467 */ 1468 typedef void (*kmpc_dtor_vec)(void *, size_t); 1469 /*! 1470 Array constructor. 1471 First argument is the <tt>this</tt> pointer 1472 Third argument the number of array elements. 1473 */ 1474 typedef void *(*kmpc_cctor_vec)(void *, void *, 1475 size_t); /* function unused by compiler */ 1476 1477 /*! 1478 @} 1479 */ 1480 1481 /* keeps tracked of threadprivate cache allocations for cleanup later */ 1482 typedef struct kmp_cached_addr { 1483 void **addr; /* address of allocated cache */ 1484 void ***compiler_cache; /* pointer to compiler's cache */ 1485 void *data; /* pointer to global data */ 1486 struct kmp_cached_addr *next; /* pointer to next cached address */ 1487 } kmp_cached_addr_t; 1488 1489 struct private_data { 1490 struct private_data *next; /* The next descriptor in the list */ 1491 void *data; /* The data buffer for this descriptor */ 1492 int more; /* The repeat count for this descriptor */ 1493 size_t size; /* The data size for this descriptor */ 1494 }; 1495 1496 struct private_common { 1497 struct private_common *next; 1498 struct private_common *link; 1499 void *gbl_addr; 1500 void *par_addr; /* par_addr == gbl_addr for MASTER thread */ 1501 size_t cmn_size; 1502 }; 1503 1504 struct shared_common { 1505 struct shared_common *next; 1506 struct private_data *pod_init; 1507 void *obj_init; 1508 void *gbl_addr; 1509 union { 1510 kmpc_ctor ctor; 1511 kmpc_ctor_vec ctorv; 1512 } ct; 1513 union { 1514 kmpc_cctor cctor; 1515 kmpc_cctor_vec cctorv; 1516 } cct; 1517 union { 1518 kmpc_dtor dtor; 1519 kmpc_dtor_vec dtorv; 1520 } dt; 1521 size_t vec_len; 1522 int is_vec; 1523 size_t cmn_size; 1524 }; 1525 1526 #define KMP_HASH_TABLE_LOG2 9 /* log2 of the hash table size */ 1527 #define KMP_HASH_TABLE_SIZE \ 1528 (1 << KMP_HASH_TABLE_LOG2) /* size of the hash table */ 1529 #define KMP_HASH_SHIFT 3 /* throw away this many low bits from the address */ 1530 #define KMP_HASH(x) \ 1531 ((((kmp_uintptr_t)x) >> KMP_HASH_SHIFT) & (KMP_HASH_TABLE_SIZE - 1)) 1532 1533 struct common_table { 1534 struct private_common *data[KMP_HASH_TABLE_SIZE]; 1535 }; 1536 1537 struct shared_table { 1538 struct shared_common *data[KMP_HASH_TABLE_SIZE]; 1539 }; 1540 1541 /* ------------------------------------------------------------------------ */ 1542 1543 #if KMP_USE_HIER_SCHED 1544 // Shared barrier data that exists inside a single unit of the scheduling 1545 // hierarchy 1546 typedef struct kmp_hier_private_bdata_t { 1547 kmp_int32 num_active; 1548 kmp_uint64 index; 1549 kmp_uint64 wait_val[2]; 1550 } kmp_hier_private_bdata_t; 1551 #endif 1552 1553 typedef struct kmp_sched_flags { 1554 unsigned ordered : 1; 1555 unsigned nomerge : 1; 1556 unsigned contains_last : 1; 1557 #if KMP_USE_HIER_SCHED 1558 unsigned use_hier : 1; 1559 unsigned unused : 28; 1560 #else 1561 unsigned unused : 29; 1562 #endif 1563 } kmp_sched_flags_t; 1564 1565 KMP_BUILD_ASSERT(sizeof(kmp_sched_flags_t) == 4); 1566 1567 #if KMP_STATIC_STEAL_ENABLED 1568 typedef struct KMP_ALIGN_CACHE dispatch_private_info32 { 1569 kmp_int32 count; 1570 kmp_int32 ub; 1571 /* Adding KMP_ALIGN_CACHE here doesn't help / can hurt performance */ 1572 kmp_int32 lb; 1573 kmp_int32 st; 1574 kmp_int32 tc; 1575 kmp_int32 static_steal_counter; /* for static_steal only; maybe better to put 1576 after ub */ 1577 1578 // KMP_ALIGN( 16 ) ensures ( if the KMP_ALIGN macro is turned on ) 1579 // a) parm3 is properly aligned and 1580 // b) all parm1-4 are in the same cache line. 1581 // Because of parm1-4 are used together, performance seems to be better 1582 // if they are in the same line (not measured though). 1583 1584 struct KMP_ALIGN(32) { // AC: changed 16 to 32 in order to simplify template 1585 kmp_int32 parm1; // structures in kmp_dispatch.cpp. This should 1586 kmp_int32 parm2; // make no real change at least while padding is off. 1587 kmp_int32 parm3; 1588 kmp_int32 parm4; 1589 }; 1590 1591 kmp_uint32 ordered_lower; 1592 kmp_uint32 ordered_upper; 1593 #if KMP_OS_WINDOWS 1594 // This var can be placed in the hole between 'tc' and 'parm1', instead of 1595 // 'static_steal_counter'. It would be nice to measure execution times. 1596 // Conditional if/endif can be removed at all. 1597 kmp_int32 last_upper; 1598 #endif /* KMP_OS_WINDOWS */ 1599 } dispatch_private_info32_t; 1600 1601 typedef struct KMP_ALIGN_CACHE dispatch_private_info64 { 1602 kmp_int64 count; // current chunk number for static & static-steal scheduling 1603 kmp_int64 ub; /* upper-bound */ 1604 /* Adding KMP_ALIGN_CACHE here doesn't help / can hurt performance */ 1605 kmp_int64 lb; /* lower-bound */ 1606 kmp_int64 st; /* stride */ 1607 kmp_int64 tc; /* trip count (number of iterations) */ 1608 kmp_int64 static_steal_counter; /* for static_steal only; maybe better to put 1609 after ub */ 1610 1611 /* parm[1-4] are used in different ways by different scheduling algorithms */ 1612 1613 // KMP_ALIGN( 32 ) ensures ( if the KMP_ALIGN macro is turned on ) 1614 // a) parm3 is properly aligned and 1615 // b) all parm1-4 are in the same cache line. 1616 // Because of parm1-4 are used together, performance seems to be better 1617 // if they are in the same line (not measured though). 1618 1619 struct KMP_ALIGN(32) { 1620 kmp_int64 parm1; 1621 kmp_int64 parm2; 1622 kmp_int64 parm3; 1623 kmp_int64 parm4; 1624 }; 1625 1626 kmp_uint64 ordered_lower; 1627 kmp_uint64 ordered_upper; 1628 #if KMP_OS_WINDOWS 1629 // This var can be placed in the hole between 'tc' and 'parm1', instead of 1630 // 'static_steal_counter'. It would be nice to measure execution times. 1631 // Conditional if/endif can be removed at all. 1632 kmp_int64 last_upper; 1633 #endif /* KMP_OS_WINDOWS */ 1634 } dispatch_private_info64_t; 1635 #else /* KMP_STATIC_STEAL_ENABLED */ 1636 typedef struct KMP_ALIGN_CACHE dispatch_private_info32 { 1637 kmp_int32 lb; 1638 kmp_int32 ub; 1639 kmp_int32 st; 1640 kmp_int32 tc; 1641 1642 kmp_int32 parm1; 1643 kmp_int32 parm2; 1644 kmp_int32 parm3; 1645 kmp_int32 parm4; 1646 1647 kmp_int32 count; 1648 1649 kmp_uint32 ordered_lower; 1650 kmp_uint32 ordered_upper; 1651 #if KMP_OS_WINDOWS 1652 kmp_int32 last_upper; 1653 #endif /* KMP_OS_WINDOWS */ 1654 } dispatch_private_info32_t; 1655 1656 typedef struct KMP_ALIGN_CACHE dispatch_private_info64 { 1657 kmp_int64 lb; /* lower-bound */ 1658 kmp_int64 ub; /* upper-bound */ 1659 kmp_int64 st; /* stride */ 1660 kmp_int64 tc; /* trip count (number of iterations) */ 1661 1662 /* parm[1-4] are used in different ways by different scheduling algorithms */ 1663 kmp_int64 parm1; 1664 kmp_int64 parm2; 1665 kmp_int64 parm3; 1666 kmp_int64 parm4; 1667 1668 kmp_int64 count; /* current chunk number for static scheduling */ 1669 1670 kmp_uint64 ordered_lower; 1671 kmp_uint64 ordered_upper; 1672 #if KMP_OS_WINDOWS 1673 kmp_int64 last_upper; 1674 #endif /* KMP_OS_WINDOWS */ 1675 } dispatch_private_info64_t; 1676 #endif /* KMP_STATIC_STEAL_ENABLED */ 1677 1678 typedef struct KMP_ALIGN_CACHE dispatch_private_info { 1679 union private_info { 1680 dispatch_private_info32_t p32; 1681 dispatch_private_info64_t p64; 1682 } u; 1683 enum sched_type schedule; /* scheduling algorithm */ 1684 kmp_sched_flags_t flags; /* flags (e.g., ordered, nomerge, etc.) */ 1685 kmp_int32 ordered_bumped; 1686 // To retain the structure size after making ordered_iteration scalar 1687 kmp_int32 ordered_dummy[KMP_MAX_ORDERED - 3]; 1688 // Stack of buffers for nest of serial regions 1689 struct dispatch_private_info *next; 1690 kmp_int32 type_size; /* the size of types in private_info */ 1691 #if KMP_USE_HIER_SCHED 1692 kmp_int32 hier_id; 1693 void *parent; /* hierarchical scheduling parent pointer */ 1694 #endif 1695 enum cons_type pushed_ws; 1696 } dispatch_private_info_t; 1697 1698 typedef struct dispatch_shared_info32 { 1699 /* chunk index under dynamic, number of idle threads under static-steal; 1700 iteration index otherwise */ 1701 volatile kmp_uint32 iteration; 1702 volatile kmp_uint32 num_done; 1703 volatile kmp_uint32 ordered_iteration; 1704 // Dummy to retain the structure size after making ordered_iteration scalar 1705 kmp_int32 ordered_dummy[KMP_MAX_ORDERED - 1]; 1706 } dispatch_shared_info32_t; 1707 1708 typedef struct dispatch_shared_info64 { 1709 /* chunk index under dynamic, number of idle threads under static-steal; 1710 iteration index otherwise */ 1711 volatile kmp_uint64 iteration; 1712 volatile kmp_uint64 num_done; 1713 volatile kmp_uint64 ordered_iteration; 1714 // Dummy to retain the structure size after making ordered_iteration scalar 1715 kmp_int64 ordered_dummy[KMP_MAX_ORDERED - 3]; 1716 } dispatch_shared_info64_t; 1717 1718 typedef struct dispatch_shared_info { 1719 union shared_info { 1720 dispatch_shared_info32_t s32; 1721 dispatch_shared_info64_t s64; 1722 } u; 1723 volatile kmp_uint32 buffer_index; 1724 #if OMP_45_ENABLED 1725 volatile kmp_int32 doacross_buf_idx; // teamwise index 1726 volatile kmp_uint32 *doacross_flags; // shared array of iteration flags (0/1) 1727 kmp_int32 doacross_num_done; // count finished threads 1728 #endif 1729 #if KMP_USE_HIER_SCHED 1730 void *hier; 1731 #endif 1732 #if KMP_USE_HWLOC 1733 // When linking with libhwloc, the ORDERED EPCC test slows down on big 1734 // machines (> 48 cores). Performance analysis showed that a cache thrash 1735 // was occurring and this padding helps alleviate the problem. 1736 char padding[64]; 1737 #endif 1738 } dispatch_shared_info_t; 1739 1740 typedef struct kmp_disp { 1741 /* Vector for ORDERED SECTION */ 1742 void (*th_deo_fcn)(int *gtid, int *cid, ident_t *); 1743 /* Vector for END ORDERED SECTION */ 1744 void (*th_dxo_fcn)(int *gtid, int *cid, ident_t *); 1745 1746 dispatch_shared_info_t *th_dispatch_sh_current; 1747 dispatch_private_info_t *th_dispatch_pr_current; 1748 1749 dispatch_private_info_t *th_disp_buffer; 1750 kmp_int32 th_disp_index; 1751 #if OMP_45_ENABLED 1752 kmp_int32 th_doacross_buf_idx; // thread's doacross buffer index 1753 volatile kmp_uint32 *th_doacross_flags; // pointer to shared array of flags 1754 union { // we can use union here because doacross cannot be used in 1755 // nonmonotonic loops 1756 kmp_int64 *th_doacross_info; // info on loop bounds 1757 kmp_lock_t *th_steal_lock; // lock used for chunk stealing (8-byte variable) 1758 }; 1759 #else 1760 #if KMP_STATIC_STEAL_ENABLED 1761 kmp_lock_t *th_steal_lock; // lock used for chunk stealing (8-byte variable) 1762 void *dummy_padding[1]; // make it 64 bytes on Intel(R) 64 1763 #else 1764 void *dummy_padding[2]; // make it 64 bytes on Intel(R) 64 1765 #endif 1766 #endif 1767 #if KMP_USE_INTERNODE_ALIGNMENT 1768 char more_padding[INTERNODE_CACHE_LINE]; 1769 #endif 1770 } kmp_disp_t; 1771 1772 /* ------------------------------------------------------------------------ */ 1773 /* Barrier stuff */ 1774 1775 /* constants for barrier state update */ 1776 #define KMP_INIT_BARRIER_STATE 0 /* should probably start from zero */ 1777 #define KMP_BARRIER_SLEEP_BIT 0 /* bit used for suspend/sleep part of state */ 1778 #define KMP_BARRIER_UNUSED_BIT 1 // bit that must never be set for valid state 1779 #define KMP_BARRIER_BUMP_BIT 2 /* lsb used for bump of go/arrived state */ 1780 1781 #define KMP_BARRIER_SLEEP_STATE (1 << KMP_BARRIER_SLEEP_BIT) 1782 #define KMP_BARRIER_UNUSED_STATE (1 << KMP_BARRIER_UNUSED_BIT) 1783 #define KMP_BARRIER_STATE_BUMP (1 << KMP_BARRIER_BUMP_BIT) 1784 1785 #if (KMP_BARRIER_SLEEP_BIT >= KMP_BARRIER_BUMP_BIT) 1786 #error "Barrier sleep bit must be smaller than barrier bump bit" 1787 #endif 1788 #if (KMP_BARRIER_UNUSED_BIT >= KMP_BARRIER_BUMP_BIT) 1789 #error "Barrier unused bit must be smaller than barrier bump bit" 1790 #endif 1791 1792 // Constants for release barrier wait state: currently, hierarchical only 1793 #define KMP_BARRIER_NOT_WAITING 0 // Normal state; worker not in wait_sleep 1794 #define KMP_BARRIER_OWN_FLAG \ 1795 1 // Normal state; worker waiting on own b_go flag in release 1796 #define KMP_BARRIER_PARENT_FLAG \ 1797 2 // Special state; worker waiting on parent's b_go flag in release 1798 #define KMP_BARRIER_SWITCH_TO_OWN_FLAG \ 1799 3 // Special state; tells worker to shift from parent to own b_go 1800 #define KMP_BARRIER_SWITCHING \ 1801 4 // Special state; worker resets appropriate flag on wake-up 1802 1803 #define KMP_NOT_SAFE_TO_REAP \ 1804 0 // Thread th_reap_state: not safe to reap (tasking) 1805 #define KMP_SAFE_TO_REAP 1 // Thread th_reap_state: safe to reap (not tasking) 1806 1807 enum barrier_type { 1808 bs_plain_barrier = 0, /* 0, All non-fork/join barriers (except reduction 1809 barriers if enabled) */ 1810 bs_forkjoin_barrier, /* 1, All fork/join (parallel region) barriers */ 1811 #if KMP_FAST_REDUCTION_BARRIER 1812 bs_reduction_barrier, /* 2, All barriers that are used in reduction */ 1813 #endif // KMP_FAST_REDUCTION_BARRIER 1814 bs_last_barrier /* Just a placeholder to mark the end */ 1815 }; 1816 1817 // to work with reduction barriers just like with plain barriers 1818 #if !KMP_FAST_REDUCTION_BARRIER 1819 #define bs_reduction_barrier bs_plain_barrier 1820 #endif // KMP_FAST_REDUCTION_BARRIER 1821 1822 typedef enum kmp_bar_pat { /* Barrier communication patterns */ 1823 bp_linear_bar = 1824 0, /* Single level (degenerate) tree */ 1825 bp_tree_bar = 1826 1, /* Balanced tree with branching factor 2^n */ 1827 bp_hyper_bar = 1828 2, /* Hypercube-embedded tree with min branching 1829 factor 2^n */ 1830 bp_hierarchical_bar = 3, /* Machine hierarchy tree */ 1831 bp_last_bar /* Placeholder to mark the end */ 1832 } kmp_bar_pat_e; 1833 1834 #define KMP_BARRIER_ICV_PUSH 1 1835 1836 /* Record for holding the values of the internal controls stack records */ 1837 typedef struct kmp_internal_control { 1838 int serial_nesting_level; /* corresponds to the value of the 1839 th_team_serialized field */ 1840 kmp_int8 nested; /* internal control for nested parallelism (per thread) */ 1841 kmp_int8 dynamic; /* internal control for dynamic adjustment of threads (per 1842 thread) */ 1843 kmp_int8 1844 bt_set; /* internal control for whether blocktime is explicitly set */ 1845 int blocktime; /* internal control for blocktime */ 1846 #if KMP_USE_MONITOR 1847 int bt_intervals; /* internal control for blocktime intervals */ 1848 #endif 1849 int nproc; /* internal control for #threads for next parallel region (per 1850 thread) */ 1851 int max_active_levels; /* internal control for max_active_levels */ 1852 kmp_r_sched_t 1853 sched; /* internal control for runtime schedule {sched,chunk} pair */ 1854 #if OMP_40_ENABLED 1855 kmp_proc_bind_t proc_bind; /* internal control for affinity */ 1856 kmp_int32 default_device; /* internal control for default device */ 1857 #endif // OMP_40_ENABLED 1858 struct kmp_internal_control *next; 1859 } kmp_internal_control_t; 1860 1861 static inline void copy_icvs(kmp_internal_control_t *dst, 1862 kmp_internal_control_t *src) { 1863 *dst = *src; 1864 } 1865 1866 /* Thread barrier needs volatile barrier fields */ 1867 typedef struct KMP_ALIGN_CACHE kmp_bstate { 1868 // th_fixed_icvs is aligned by virtue of kmp_bstate being aligned (and all 1869 // uses of it). It is not explicitly aligned below, because we *don't* want 1870 // it to be padded -- instead, we fit b_go into the same cache line with 1871 // th_fixed_icvs, enabling NGO cache lines stores in the hierarchical barrier. 1872 kmp_internal_control_t th_fixed_icvs; // Initial ICVs for the thread 1873 // Tuck b_go into end of th_fixed_icvs cache line, so it can be stored with 1874 // same NGO store 1875 volatile kmp_uint64 b_go; // STATE => task should proceed (hierarchical) 1876 KMP_ALIGN_CACHE volatile kmp_uint64 1877 b_arrived; // STATE => task reached synch point. 1878 kmp_uint32 *skip_per_level; 1879 kmp_uint32 my_level; 1880 kmp_int32 parent_tid; 1881 kmp_int32 old_tid; 1882 kmp_uint32 depth; 1883 struct kmp_bstate *parent_bar; 1884 kmp_team_t *team; 1885 kmp_uint64 leaf_state; 1886 kmp_uint32 nproc; 1887 kmp_uint8 base_leaf_kids; 1888 kmp_uint8 leaf_kids; 1889 kmp_uint8 offset; 1890 kmp_uint8 wait_flag; 1891 kmp_uint8 use_oncore_barrier; 1892 #if USE_DEBUGGER 1893 // The following field is intended for the debugger solely. Only the worker 1894 // thread itself accesses this field: the worker increases it by 1 when it 1895 // arrives to a barrier. 1896 KMP_ALIGN_CACHE kmp_uint b_worker_arrived; 1897 #endif /* USE_DEBUGGER */ 1898 } kmp_bstate_t; 1899 1900 union KMP_ALIGN_CACHE kmp_barrier_union { 1901 double b_align; /* use worst case alignment */ 1902 char b_pad[KMP_PAD(kmp_bstate_t, CACHE_LINE)]; 1903 kmp_bstate_t bb; 1904 }; 1905 1906 typedef union kmp_barrier_union kmp_balign_t; 1907 1908 /* Team barrier needs only non-volatile arrived counter */ 1909 union KMP_ALIGN_CACHE kmp_barrier_team_union { 1910 double b_align; /* use worst case alignment */ 1911 char b_pad[CACHE_LINE]; 1912 struct { 1913 kmp_uint64 b_arrived; /* STATE => task reached synch point. */ 1914 #if USE_DEBUGGER 1915 // The following two fields are indended for the debugger solely. Only 1916 // master of the team accesses these fields: the first one is increased by 1917 // 1 when master arrives to a barrier, the second one is increased by one 1918 // when all the threads arrived. 1919 kmp_uint b_master_arrived; 1920 kmp_uint b_team_arrived; 1921 #endif 1922 }; 1923 }; 1924 1925 typedef union kmp_barrier_team_union kmp_balign_team_t; 1926 1927 /* Padding for Linux* OS pthreads condition variables and mutexes used to signal 1928 threads when a condition changes. This is to workaround an NPTL bug where 1929 padding was added to pthread_cond_t which caused the initialization routine 1930 to write outside of the structure if compiled on pre-NPTL threads. */ 1931 #if KMP_OS_WINDOWS 1932 typedef struct kmp_win32_mutex { 1933 /* The Lock */ 1934 CRITICAL_SECTION cs; 1935 } kmp_win32_mutex_t; 1936 1937 typedef struct kmp_win32_cond { 1938 /* Count of the number of waiters. */ 1939 int waiters_count_; 1940 1941 /* Serialize access to <waiters_count_> */ 1942 kmp_win32_mutex_t waiters_count_lock_; 1943 1944 /* Number of threads to release via a <cond_broadcast> or a <cond_signal> */ 1945 int release_count_; 1946 1947 /* Keeps track of the current "generation" so that we don't allow */ 1948 /* one thread to steal all the "releases" from the broadcast. */ 1949 int wait_generation_count_; 1950 1951 /* A manual-reset event that's used to block and release waiting threads. */ 1952 HANDLE event_; 1953 } kmp_win32_cond_t; 1954 #endif 1955 1956 #if KMP_OS_UNIX 1957 1958 union KMP_ALIGN_CACHE kmp_cond_union { 1959 double c_align; 1960 char c_pad[CACHE_LINE]; 1961 pthread_cond_t c_cond; 1962 }; 1963 1964 typedef union kmp_cond_union kmp_cond_align_t; 1965 1966 union KMP_ALIGN_CACHE kmp_mutex_union { 1967 double m_align; 1968 char m_pad[CACHE_LINE]; 1969 pthread_mutex_t m_mutex; 1970 }; 1971 1972 typedef union kmp_mutex_union kmp_mutex_align_t; 1973 1974 #endif /* KMP_OS_UNIX */ 1975 1976 typedef struct kmp_desc_base { 1977 void *ds_stackbase; 1978 size_t ds_stacksize; 1979 int ds_stackgrow; 1980 kmp_thread_t ds_thread; 1981 volatile int ds_tid; 1982 int ds_gtid; 1983 #if KMP_OS_WINDOWS 1984 volatile int ds_alive; 1985 DWORD ds_thread_id; 1986 /* ds_thread keeps thread handle on Windows* OS. It is enough for RTL purposes. 1987 However, debugger support (libomp_db) cannot work with handles, because they 1988 uncomparable. For example, debugger requests info about thread with handle h. 1989 h is valid within debugger process, and meaningless within debugee process. 1990 Even if h is duped by call to DuplicateHandle(), so the result h' is valid 1991 within debugee process, but it is a *new* handle which does *not* equal to 1992 any other handle in debugee... The only way to compare handles is convert 1993 them to system-wide ids. GetThreadId() function is available only in 1994 Longhorn and Server 2003. :-( In contrast, GetCurrentThreadId() is available 1995 on all Windows* OS flavours (including Windows* 95). Thus, we have to get 1996 thread id by call to GetCurrentThreadId() from within the thread and save it 1997 to let libomp_db identify threads. */ 1998 #endif /* KMP_OS_WINDOWS */ 1999 } kmp_desc_base_t; 2000 2001 typedef union KMP_ALIGN_CACHE kmp_desc { 2002 double ds_align; /* use worst case alignment */ 2003 char ds_pad[KMP_PAD(kmp_desc_base_t, CACHE_LINE)]; 2004 kmp_desc_base_t ds; 2005 } kmp_desc_t; 2006 2007 typedef struct kmp_local { 2008 volatile int this_construct; /* count of single's encountered by thread */ 2009 void *reduce_data; 2010 #if KMP_USE_BGET 2011 void *bget_data; 2012 void *bget_list; 2013 #if !USE_CMP_XCHG_FOR_BGET 2014 #ifdef USE_QUEUING_LOCK_FOR_BGET 2015 kmp_lock_t bget_lock; /* Lock for accessing bget free list */ 2016 #else 2017 kmp_bootstrap_lock_t bget_lock; // Lock for accessing bget free list. Must be 2018 // bootstrap lock so we can use it at library 2019 // shutdown. 2020 #endif /* USE_LOCK_FOR_BGET */ 2021 #endif /* ! USE_CMP_XCHG_FOR_BGET */ 2022 #endif /* KMP_USE_BGET */ 2023 2024 PACKED_REDUCTION_METHOD_T 2025 packed_reduction_method; /* stored by __kmpc_reduce*(), used by 2026 __kmpc_end_reduce*() */ 2027 2028 } kmp_local_t; 2029 2030 #define KMP_CHECK_UPDATE(a, b) \ 2031 if ((a) != (b)) \ 2032 (a) = (b) 2033 #define KMP_CHECK_UPDATE_SYNC(a, b) \ 2034 if ((a) != (b)) \ 2035 TCW_SYNC_PTR((a), (b)) 2036 2037 #define get__blocktime(xteam, xtid) \ 2038 ((xteam)->t.t_threads[(xtid)]->th.th_current_task->td_icvs.blocktime) 2039 #define get__bt_set(xteam, xtid) \ 2040 ((xteam)->t.t_threads[(xtid)]->th.th_current_task->td_icvs.bt_set) 2041 #if KMP_USE_MONITOR 2042 #define get__bt_intervals(xteam, xtid) \ 2043 ((xteam)->t.t_threads[(xtid)]->th.th_current_task->td_icvs.bt_intervals) 2044 #endif 2045 2046 #define get__nested_2(xteam, xtid) \ 2047 ((xteam)->t.t_threads[(xtid)]->th.th_current_task->td_icvs.nested) 2048 #define get__dynamic_2(xteam, xtid) \ 2049 ((xteam)->t.t_threads[(xtid)]->th.th_current_task->td_icvs.dynamic) 2050 #define get__nproc_2(xteam, xtid) \ 2051 ((xteam)->t.t_threads[(xtid)]->th.th_current_task->td_icvs.nproc) 2052 #define get__sched_2(xteam, xtid) \ 2053 ((xteam)->t.t_threads[(xtid)]->th.th_current_task->td_icvs.sched) 2054 2055 #define set__blocktime_team(xteam, xtid, xval) \ 2056 (((xteam)->t.t_threads[(xtid)]->th.th_current_task->td_icvs.blocktime) = \ 2057 (xval)) 2058 2059 #if KMP_USE_MONITOR 2060 #define set__bt_intervals_team(xteam, xtid, xval) \ 2061 (((xteam)->t.t_threads[(xtid)]->th.th_current_task->td_icvs.bt_intervals) = \ 2062 (xval)) 2063 #endif 2064 2065 #define set__bt_set_team(xteam, xtid, xval) \ 2066 (((xteam)->t.t_threads[(xtid)]->th.th_current_task->td_icvs.bt_set) = (xval)) 2067 2068 #define set__nested(xthread, xval) \ 2069 (((xthread)->th.th_current_task->td_icvs.nested) = (xval)) 2070 #define get__nested(xthread) \ 2071 (((xthread)->th.th_current_task->td_icvs.nested) ? (FTN_TRUE) : (FTN_FALSE)) 2072 2073 #define set__dynamic(xthread, xval) \ 2074 (((xthread)->th.th_current_task->td_icvs.dynamic) = (xval)) 2075 #define get__dynamic(xthread) \ 2076 (((xthread)->th.th_current_task->td_icvs.dynamic) ? (FTN_TRUE) : (FTN_FALSE)) 2077 2078 #define set__nproc(xthread, xval) \ 2079 (((xthread)->th.th_current_task->td_icvs.nproc) = (xval)) 2080 2081 #define set__max_active_levels(xthread, xval) \ 2082 (((xthread)->th.th_current_task->td_icvs.max_active_levels) = (xval)) 2083 2084 #define set__sched(xthread, xval) \ 2085 (((xthread)->th.th_current_task->td_icvs.sched) = (xval)) 2086 2087 #if OMP_40_ENABLED 2088 2089 #define set__proc_bind(xthread, xval) \ 2090 (((xthread)->th.th_current_task->td_icvs.proc_bind) = (xval)) 2091 #define get__proc_bind(xthread) \ 2092 ((xthread)->th.th_current_task->td_icvs.proc_bind) 2093 2094 #endif /* OMP_40_ENABLED */ 2095 2096 // OpenMP tasking data structures 2097 2098 typedef enum kmp_tasking_mode { 2099 tskm_immediate_exec = 0, 2100 tskm_extra_barrier = 1, 2101 tskm_task_teams = 2, 2102 tskm_max = 2 2103 } kmp_tasking_mode_t; 2104 2105 extern kmp_tasking_mode_t 2106 __kmp_tasking_mode; /* determines how/when to execute tasks */ 2107 extern int __kmp_task_stealing_constraint; 2108 #if OMP_40_ENABLED 2109 extern kmp_int32 __kmp_default_device; // Set via OMP_DEFAULT_DEVICE if 2110 // specified, defaults to 0 otherwise 2111 #endif 2112 #if OMP_45_ENABLED 2113 // Set via OMP_MAX_TASK_PRIORITY if specified, defaults to 0 otherwise 2114 extern kmp_int32 __kmp_max_task_priority; 2115 // Set via KMP_TASKLOOP_MIN_TASKS if specified, defaults to 0 otherwise 2116 extern kmp_uint64 __kmp_taskloop_min_tasks; 2117 #endif 2118 2119 /* NOTE: kmp_taskdata_t and kmp_task_t structures allocated in single block with 2120 taskdata first */ 2121 #define KMP_TASK_TO_TASKDATA(task) (((kmp_taskdata_t *)task) - 1) 2122 #define KMP_TASKDATA_TO_TASK(taskdata) (kmp_task_t *)(taskdata + 1) 2123 2124 // The tt_found_tasks flag is a signal to all threads in the team that tasks 2125 // were spawned and queued since the previous barrier release. 2126 #define KMP_TASKING_ENABLED(task_team) \ 2127 (TCR_SYNC_4((task_team)->tt.tt_found_tasks) == TRUE) 2128 /*! 2129 @ingroup BASIC_TYPES 2130 @{ 2131 */ 2132 2133 /*! 2134 */ 2135 typedef kmp_int32 (*kmp_routine_entry_t)(kmp_int32, void *); 2136 2137 #if OMP_40_ENABLED || OMP_45_ENABLED 2138 typedef union kmp_cmplrdata { 2139 #if OMP_45_ENABLED 2140 kmp_int32 priority; /**< priority specified by user for the task */ 2141 #endif // OMP_45_ENABLED 2142 #if OMP_40_ENABLED 2143 kmp_routine_entry_t 2144 destructors; /* pointer to function to invoke deconstructors of 2145 firstprivate C++ objects */ 2146 #endif // OMP_40_ENABLED 2147 /* future data */ 2148 } kmp_cmplrdata_t; 2149 #endif 2150 2151 /* sizeof_kmp_task_t passed as arg to kmpc_omp_task call */ 2152 /*! 2153 */ 2154 typedef struct kmp_task { /* GEH: Shouldn't this be aligned somehow? */ 2155 void *shareds; /**< pointer to block of pointers to shared vars */ 2156 kmp_routine_entry_t 2157 routine; /**< pointer to routine to call for executing task */ 2158 kmp_int32 part_id; /**< part id for the task */ 2159 #if OMP_40_ENABLED || OMP_45_ENABLED 2160 kmp_cmplrdata_t 2161 data1; /* Two known optional additions: destructors and priority */ 2162 kmp_cmplrdata_t data2; /* Process destructors first, priority second */ 2163 /* future data */ 2164 #endif 2165 /* private vars */ 2166 } kmp_task_t; 2167 2168 /*! 2169 @} 2170 */ 2171 2172 #if OMP_40_ENABLED 2173 typedef struct kmp_taskgroup { 2174 std::atomic<kmp_int32> count; // number of allocated and incomplete tasks 2175 std::atomic<kmp_int32> 2176 cancel_request; // request for cancellation of this taskgroup 2177 struct kmp_taskgroup *parent; // parent taskgroup 2178 #if OMP_50_ENABLED 2179 // Block of data to perform task reduction 2180 void *reduce_data; // reduction related info 2181 kmp_int32 reduce_num_data; // number of data items to reduce 2182 #endif 2183 } kmp_taskgroup_t; 2184 2185 // forward declarations 2186 typedef union kmp_depnode kmp_depnode_t; 2187 typedef struct kmp_depnode_list kmp_depnode_list_t; 2188 typedef struct kmp_dephash_entry kmp_dephash_entry_t; 2189 2190 // Compiler sends us this info: 2191 typedef struct kmp_depend_info { 2192 kmp_intptr_t base_addr; 2193 size_t len; 2194 struct { 2195 bool in : 1; 2196 bool out : 1; 2197 bool mtx : 1; 2198 } flags; 2199 } kmp_depend_info_t; 2200 2201 // Internal structures to work with task dependencies: 2202 struct kmp_depnode_list { 2203 kmp_depnode_t *node; 2204 kmp_depnode_list_t *next; 2205 }; 2206 2207 // Max number of mutexinoutset dependencies per node 2208 #define MAX_MTX_DEPS 4 2209 2210 typedef struct kmp_base_depnode { 2211 kmp_depnode_list_t *successors; /* used under lock */ 2212 kmp_task_t *task; /* non-NULL if depnode is active, used under lock */ 2213 kmp_lock_t *mtx_locks[MAX_MTX_DEPS]; /* lock mutexinoutset dependent tasks */ 2214 kmp_int32 mtx_num_locks; /* number of locks in mtx_locks array */ 2215 kmp_lock_t lock; /* guards shared fields: task, successors */ 2216 #if KMP_SUPPORT_GRAPH_OUTPUT 2217 kmp_uint32 id; 2218 #endif 2219 std::atomic<kmp_int32> npredecessors; 2220 std::atomic<kmp_int32> nrefs; 2221 } kmp_base_depnode_t; 2222 2223 union KMP_ALIGN_CACHE kmp_depnode { 2224 double dn_align; /* use worst case alignment */ 2225 char dn_pad[KMP_PAD(kmp_base_depnode_t, CACHE_LINE)]; 2226 kmp_base_depnode_t dn; 2227 }; 2228 2229 struct kmp_dephash_entry { 2230 kmp_intptr_t addr; 2231 kmp_depnode_t *last_out; 2232 kmp_depnode_list_t *last_ins; 2233 kmp_depnode_list_t *last_mtxs; 2234 kmp_int32 last_flag; 2235 kmp_lock_t *mtx_lock; /* is referenced by depnodes w/mutexinoutset dep */ 2236 kmp_dephash_entry_t *next_in_bucket; 2237 }; 2238 2239 typedef struct kmp_dephash { 2240 kmp_dephash_entry_t **buckets; 2241 size_t size; 2242 #ifdef KMP_DEBUG 2243 kmp_uint32 nelements; 2244 kmp_uint32 nconflicts; 2245 #endif 2246 } kmp_dephash_t; 2247 2248 #if OMP_50_ENABLED 2249 typedef struct kmp_task_affinity_info { 2250 kmp_intptr_t base_addr; 2251 size_t len; 2252 struct { 2253 bool flag1 : 1; 2254 bool flag2 : 1; 2255 kmp_int32 reserved : 30; 2256 } flags; 2257 } kmp_task_affinity_info_t; 2258 #endif 2259 2260 #endif 2261 2262 #ifdef BUILD_TIED_TASK_STACK 2263 2264 /* Tied Task stack definitions */ 2265 typedef struct kmp_stack_block { 2266 kmp_taskdata_t *sb_block[TASK_STACK_BLOCK_SIZE]; 2267 struct kmp_stack_block *sb_next; 2268 struct kmp_stack_block *sb_prev; 2269 } kmp_stack_block_t; 2270 2271 typedef struct kmp_task_stack { 2272 kmp_stack_block_t ts_first_block; // first block of stack entries 2273 kmp_taskdata_t **ts_top; // pointer to the top of stack 2274 kmp_int32 ts_entries; // number of entries on the stack 2275 } kmp_task_stack_t; 2276 2277 #endif // BUILD_TIED_TASK_STACK 2278 2279 typedef struct kmp_tasking_flags { /* Total struct must be exactly 32 bits */ 2280 /* Compiler flags */ /* Total compiler flags must be 16 bits */ 2281 unsigned tiedness : 1; /* task is either tied (1) or untied (0) */ 2282 unsigned final : 1; /* task is final(1) so execute immediately */ 2283 unsigned merged_if0 : 1; /* no __kmpc_task_{begin/complete}_if0 calls in if0 2284 code path */ 2285 #if OMP_40_ENABLED 2286 unsigned destructors_thunk : 1; /* set if the compiler creates a thunk to 2287 invoke destructors from the runtime */ 2288 #if OMP_45_ENABLED 2289 unsigned proxy : 1; /* task is a proxy task (it will be executed outside the 2290 context of the RTL) */ 2291 unsigned priority_specified : 1; /* set if the compiler provides priority 2292 setting for the task */ 2293 unsigned reserved : 10; /* reserved for compiler use */ 2294 #else 2295 unsigned reserved : 12; /* reserved for compiler use */ 2296 #endif 2297 #else // OMP_40_ENABLED 2298 unsigned reserved : 13; /* reserved for compiler use */ 2299 #endif // OMP_40_ENABLED 2300 2301 /* Library flags */ /* Total library flags must be 16 bits */ 2302 unsigned tasktype : 1; /* task is either explicit(1) or implicit (0) */ 2303 unsigned task_serial : 1; // task is executed immediately (1) or deferred (0) 2304 unsigned tasking_ser : 1; // all tasks in team are either executed immediately 2305 // (1) or may be deferred (0) 2306 unsigned team_serial : 1; // entire team is serial (1) [1 thread] or parallel 2307 // (0) [>= 2 threads] 2308 /* If either team_serial or tasking_ser is set, task team may be NULL */ 2309 /* Task State Flags: */ 2310 unsigned started : 1; /* 1==started, 0==not started */ 2311 unsigned executing : 1; /* 1==executing, 0==not executing */ 2312 unsigned complete : 1; /* 1==complete, 0==not complete */ 2313 unsigned freed : 1; /* 1==freed, 0==allocateed */ 2314 unsigned native : 1; /* 1==gcc-compiled task, 0==intel */ 2315 unsigned reserved31 : 7; /* reserved for library use */ 2316 2317 } kmp_tasking_flags_t; 2318 2319 struct kmp_taskdata { /* aligned during dynamic allocation */ 2320 kmp_int32 td_task_id; /* id, assigned by debugger */ 2321 kmp_tasking_flags_t td_flags; /* task flags */ 2322 kmp_team_t *td_team; /* team for this task */ 2323 kmp_info_p *td_alloc_thread; /* thread that allocated data structures */ 2324 /* Currently not used except for perhaps IDB */ 2325 kmp_taskdata_t *td_parent; /* parent task */ 2326 kmp_int32 td_level; /* task nesting level */ 2327 std::atomic<kmp_int32> td_untied_count; // untied task active parts counter 2328 ident_t *td_ident; /* task identifier */ 2329 // Taskwait data. 2330 ident_t *td_taskwait_ident; 2331 kmp_uint32 td_taskwait_counter; 2332 kmp_int32 td_taskwait_thread; /* gtid + 1 of thread encountered taskwait */ 2333 KMP_ALIGN_CACHE kmp_internal_control_t 2334 td_icvs; /* Internal control variables for the task */ 2335 KMP_ALIGN_CACHE std::atomic<kmp_int32> 2336 td_allocated_child_tasks; /* Child tasks (+ current task) not yet 2337 deallocated */ 2338 std::atomic<kmp_int32> 2339 td_incomplete_child_tasks; /* Child tasks not yet complete */ 2340 #if OMP_40_ENABLED 2341 kmp_taskgroup_t 2342 *td_taskgroup; // Each task keeps pointer to its current taskgroup 2343 kmp_dephash_t 2344 *td_dephash; // Dependencies for children tasks are tracked from here 2345 kmp_depnode_t 2346 *td_depnode; // Pointer to graph node if this task has dependencies 2347 #endif // OMP_40_ENABLED 2348 #if OMP_45_ENABLED 2349 kmp_task_team_t *td_task_team; 2350 kmp_int32 td_size_alloc; // The size of task structure, including shareds etc. 2351 #if defined(KMP_GOMP_COMPAT) 2352 // 4 or 8 byte integers for the loop bounds in GOMP_taskloop 2353 kmp_int32 td_size_loop_bounds; 2354 #endif 2355 #endif // OMP_45_ENABLED 2356 kmp_taskdata_t *td_last_tied; // keep tied task for task scheduling constraint 2357 #if defined(KMP_GOMP_COMPAT) && OMP_45_ENABLED 2358 // GOMP sends in a copy function for copy constructors 2359 void (*td_copy_func)(void *, void *); 2360 #endif 2361 #if OMPT_SUPPORT 2362 ompt_task_info_t ompt_task_info; 2363 #endif 2364 }; // struct kmp_taskdata 2365 2366 // Make sure padding above worked 2367 KMP_BUILD_ASSERT(sizeof(kmp_taskdata_t) % sizeof(void *) == 0); 2368 2369 // Data for task team but per thread 2370 typedef struct kmp_base_thread_data { 2371 kmp_info_p *td_thr; // Pointer back to thread info 2372 // Used only in __kmp_execute_tasks_template, maybe not avail until task is 2373 // queued? 2374 kmp_bootstrap_lock_t td_deque_lock; // Lock for accessing deque 2375 kmp_taskdata_t * 2376 *td_deque; // Deque of tasks encountered by td_thr, dynamically allocated 2377 kmp_int32 td_deque_size; // Size of deck 2378 kmp_uint32 td_deque_head; // Head of deque (will wrap) 2379 kmp_uint32 td_deque_tail; // Tail of deque (will wrap) 2380 kmp_int32 td_deque_ntasks; // Number of tasks in deque 2381 // GEH: shouldn't this be volatile since used in while-spin? 2382 kmp_int32 td_deque_last_stolen; // Thread number of last successful steal 2383 #ifdef BUILD_TIED_TASK_STACK 2384 kmp_task_stack_t td_susp_tied_tasks; // Stack of suspended tied tasks for task 2385 // scheduling constraint 2386 #endif // BUILD_TIED_TASK_STACK 2387 } kmp_base_thread_data_t; 2388 2389 #define TASK_DEQUE_BITS 8 // Used solely to define INITIAL_TASK_DEQUE_SIZE 2390 #define INITIAL_TASK_DEQUE_SIZE (1 << TASK_DEQUE_BITS) 2391 2392 #define TASK_DEQUE_SIZE(td) ((td).td_deque_size) 2393 #define TASK_DEQUE_MASK(td) ((td).td_deque_size - 1) 2394 2395 typedef union KMP_ALIGN_CACHE kmp_thread_data { 2396 kmp_base_thread_data_t td; 2397 double td_align; /* use worst case alignment */ 2398 char td_pad[KMP_PAD(kmp_base_thread_data_t, CACHE_LINE)]; 2399 } kmp_thread_data_t; 2400 2401 // Data for task teams which are used when tasking is enabled for the team 2402 typedef struct kmp_base_task_team { 2403 kmp_bootstrap_lock_t 2404 tt_threads_lock; /* Lock used to allocate per-thread part of task team */ 2405 /* must be bootstrap lock since used at library shutdown*/ 2406 kmp_task_team_t *tt_next; /* For linking the task team free list */ 2407 kmp_thread_data_t 2408 *tt_threads_data; /* Array of per-thread structures for task team */ 2409 /* Data survives task team deallocation */ 2410 kmp_int32 tt_found_tasks; /* Have we found tasks and queued them while 2411 executing this team? */ 2412 /* TRUE means tt_threads_data is set up and initialized */ 2413 kmp_int32 tt_nproc; /* #threads in team */ 2414 kmp_int32 2415 tt_max_threads; /* number of entries allocated for threads_data array */ 2416 #if OMP_45_ENABLED 2417 kmp_int32 2418 tt_found_proxy_tasks; /* Have we found proxy tasks since last barrier */ 2419 #endif 2420 kmp_int32 tt_untied_task_encountered; 2421 2422 KMP_ALIGN_CACHE 2423 std::atomic<kmp_int32> tt_unfinished_threads; /* #threads still active */ 2424 2425 KMP_ALIGN_CACHE 2426 volatile kmp_uint32 2427 tt_active; /* is the team still actively executing tasks */ 2428 } kmp_base_task_team_t; 2429 2430 union KMP_ALIGN_CACHE kmp_task_team { 2431 kmp_base_task_team_t tt; 2432 double tt_align; /* use worst case alignment */ 2433 char tt_pad[KMP_PAD(kmp_base_task_team_t, CACHE_LINE)]; 2434 }; 2435 2436 #if (USE_FAST_MEMORY == 3) || (USE_FAST_MEMORY == 5) 2437 // Free lists keep same-size free memory slots for fast memory allocation 2438 // routines 2439 typedef struct kmp_free_list { 2440 void *th_free_list_self; // Self-allocated tasks free list 2441 void *th_free_list_sync; // Self-allocated tasks stolen/returned by other 2442 // threads 2443 void *th_free_list_other; // Non-self free list (to be returned to owner's 2444 // sync list) 2445 } kmp_free_list_t; 2446 #endif 2447 #if KMP_NESTED_HOT_TEAMS 2448 // Hot teams array keeps hot teams and their sizes for given thread. Hot teams 2449 // are not put in teams pool, and they don't put threads in threads pool. 2450 typedef struct kmp_hot_team_ptr { 2451 kmp_team_p *hot_team; // pointer to hot_team of given nesting level 2452 kmp_int32 hot_team_nth; // number of threads allocated for the hot_team 2453 } kmp_hot_team_ptr_t; 2454 #endif 2455 #if OMP_40_ENABLED 2456 typedef struct kmp_teams_size { 2457 kmp_int32 nteams; // number of teams in a league 2458 kmp_int32 nth; // number of threads in each team of the league 2459 } kmp_teams_size_t; 2460 #endif 2461 2462 // OpenMP thread data structures 2463 2464 typedef struct KMP_ALIGN_CACHE kmp_base_info { 2465 /* Start with the readonly data which is cache aligned and padded. This is 2466 written before the thread starts working by the master. Uber masters may 2467 update themselves later. Usage does not consider serialized regions. */ 2468 kmp_desc_t th_info; 2469 kmp_team_p *th_team; /* team we belong to */ 2470 kmp_root_p *th_root; /* pointer to root of task hierarchy */ 2471 kmp_info_p *th_next_pool; /* next available thread in the pool */ 2472 kmp_disp_t *th_dispatch; /* thread's dispatch data */ 2473 int th_in_pool; /* in thread pool (32 bits for TCR/TCW) */ 2474 2475 /* The following are cached from the team info structure */ 2476 /* TODO use these in more places as determined to be needed via profiling */ 2477 int th_team_nproc; /* number of threads in a team */ 2478 kmp_info_p *th_team_master; /* the team's master thread */ 2479 int th_team_serialized; /* team is serialized */ 2480 #if OMP_40_ENABLED 2481 microtask_t th_teams_microtask; /* save entry address for teams construct */ 2482 int th_teams_level; /* save initial level of teams construct */ 2483 /* it is 0 on device but may be any on host */ 2484 #endif 2485 2486 /* The blocktime info is copied from the team struct to the thread sruct */ 2487 /* at the start of a barrier, and the values stored in the team are used */ 2488 /* at points in the code where the team struct is no longer guaranteed */ 2489 /* to exist (from the POV of worker threads). */ 2490 #if KMP_USE_MONITOR 2491 int th_team_bt_intervals; 2492 int th_team_bt_set; 2493 #else 2494 kmp_uint64 th_team_bt_intervals; 2495 #endif 2496 2497 #if KMP_AFFINITY_SUPPORTED 2498 kmp_affin_mask_t *th_affin_mask; /* thread's current affinity mask */ 2499 #endif 2500 #if OMP_50_ENABLED 2501 void *const *th_def_allocator; /* per implicit task default allocator */ 2502 #endif 2503 /* The data set by the master at reinit, then R/W by the worker */ 2504 KMP_ALIGN_CACHE int 2505 th_set_nproc; /* if > 0, then only use this request for the next fork */ 2506 #if KMP_NESTED_HOT_TEAMS 2507 kmp_hot_team_ptr_t *th_hot_teams; /* array of hot teams */ 2508 #endif 2509 #if OMP_40_ENABLED 2510 kmp_proc_bind_t 2511 th_set_proc_bind; /* if != proc_bind_default, use request for next fork */ 2512 kmp_teams_size_t 2513 th_teams_size; /* number of teams/threads in teams construct */ 2514 #if KMP_AFFINITY_SUPPORTED 2515 int th_current_place; /* place currently bound to */ 2516 int th_new_place; /* place to bind to in par reg */ 2517 int th_first_place; /* first place in partition */ 2518 int th_last_place; /* last place in partition */ 2519 #endif 2520 #endif 2521 #if OMP_50_ENABLED 2522 int th_prev_level; /* previous level for affinity format */ 2523 int th_prev_num_threads; /* previous num_threads for affinity format */ 2524 #endif 2525 #if USE_ITT_BUILD 2526 kmp_uint64 th_bar_arrive_time; /* arrival to barrier timestamp */ 2527 kmp_uint64 th_bar_min_time; /* minimum arrival time at the barrier */ 2528 kmp_uint64 th_frame_time; /* frame timestamp */ 2529 #endif /* USE_ITT_BUILD */ 2530 kmp_local_t th_local; 2531 struct private_common *th_pri_head; 2532 2533 /* Now the data only used by the worker (after initial allocation) */ 2534 /* TODO the first serial team should actually be stored in the info_t 2535 structure. this will help reduce initial allocation overhead */ 2536 KMP_ALIGN_CACHE kmp_team_p 2537 *th_serial_team; /*serialized team held in reserve*/ 2538 2539 #if OMPT_SUPPORT 2540 ompt_thread_info_t ompt_thread_info; 2541 #endif 2542 2543 /* The following are also read by the master during reinit */ 2544 struct common_table *th_pri_common; 2545 2546 volatile kmp_uint32 th_spin_here; /* thread-local location for spinning */ 2547 /* while awaiting queuing lock acquire */ 2548 2549 volatile void *th_sleep_loc; // this points at a kmp_flag<T> 2550 2551 ident_t *th_ident; 2552 unsigned th_x; // Random number generator data 2553 unsigned th_a; // Random number generator data 2554 2555 /* Tasking-related data for the thread */ 2556 kmp_task_team_t *th_task_team; // Task team struct 2557 kmp_taskdata_t *th_current_task; // Innermost Task being executed 2558 kmp_uint8 th_task_state; // alternating 0/1 for task team identification 2559 kmp_uint8 *th_task_state_memo_stack; // Stack holding memos of th_task_state 2560 // at nested levels 2561 kmp_uint32 th_task_state_top; // Top element of th_task_state_memo_stack 2562 kmp_uint32 th_task_state_stack_sz; // Size of th_task_state_memo_stack 2563 kmp_uint32 th_reap_state; // Non-zero indicates thread is not 2564 // tasking, thus safe to reap 2565 2566 /* More stuff for keeping track of active/sleeping threads (this part is 2567 written by the worker thread) */ 2568 kmp_uint8 th_active_in_pool; // included in count of #active threads in pool 2569 int th_active; // ! sleeping; 32 bits for TCR/TCW 2570 struct cons_header *th_cons; // used for consistency check 2571 #if KMP_USE_HIER_SCHED 2572 // used for hierarchical scheduling 2573 kmp_hier_private_bdata_t *th_hier_bar_data; 2574 #endif 2575 2576 /* Add the syncronizing data which is cache aligned and padded. */ 2577 KMP_ALIGN_CACHE kmp_balign_t th_bar[bs_last_barrier]; 2578 2579 KMP_ALIGN_CACHE volatile kmp_int32 2580 th_next_waiting; /* gtid+1 of next thread on lock wait queue, 0 if none */ 2581 2582 #if (USE_FAST_MEMORY == 3) || (USE_FAST_MEMORY == 5) 2583 #define NUM_LISTS 4 2584 kmp_free_list_t th_free_lists[NUM_LISTS]; // Free lists for fast memory 2585 // allocation routines 2586 #endif 2587 2588 #if KMP_OS_WINDOWS 2589 kmp_win32_cond_t th_suspend_cv; 2590 kmp_win32_mutex_t th_suspend_mx; 2591 int th_suspend_init; 2592 #endif 2593 #if KMP_OS_UNIX 2594 kmp_cond_align_t th_suspend_cv; 2595 kmp_mutex_align_t th_suspend_mx; 2596 int th_suspend_init_count; 2597 #endif 2598 2599 #if USE_ITT_BUILD 2600 kmp_itt_mark_t th_itt_mark_single; 2601 // alignment ??? 2602 #endif /* USE_ITT_BUILD */ 2603 #if KMP_STATS_ENABLED 2604 kmp_stats_list *th_stats; 2605 #endif 2606 #if KMP_OS_UNIX 2607 std::atomic<bool> th_blocking; 2608 #endif 2609 } kmp_base_info_t; 2610 2611 typedef union KMP_ALIGN_CACHE kmp_info { 2612 double th_align; /* use worst case alignment */ 2613 char th_pad[KMP_PAD(kmp_base_info_t, CACHE_LINE)]; 2614 kmp_base_info_t th; 2615 } kmp_info_t; 2616 2617 // OpenMP thread team data structures 2618 2619 typedef struct kmp_base_data { volatile kmp_uint32 t_value; } kmp_base_data_t; 2620 2621 typedef union KMP_ALIGN_CACHE kmp_sleep_team { 2622 double dt_align; /* use worst case alignment */ 2623 char dt_pad[KMP_PAD(kmp_base_data_t, CACHE_LINE)]; 2624 kmp_base_data_t dt; 2625 } kmp_sleep_team_t; 2626 2627 typedef union KMP_ALIGN_CACHE kmp_ordered_team { 2628 double dt_align; /* use worst case alignment */ 2629 char dt_pad[KMP_PAD(kmp_base_data_t, CACHE_LINE)]; 2630 kmp_base_data_t dt; 2631 } kmp_ordered_team_t; 2632 2633 typedef int (*launch_t)(int gtid); 2634 2635 /* Minimum number of ARGV entries to malloc if necessary */ 2636 #define KMP_MIN_MALLOC_ARGV_ENTRIES 100 2637 2638 // Set up how many argv pointers will fit in cache lines containing 2639 // t_inline_argv. Historically, we have supported at least 96 bytes. Using a 2640 // larger value for more space between the master write/worker read section and 2641 // read/write by all section seems to buy more performance on EPCC PARALLEL. 2642 #if KMP_ARCH_X86 || KMP_ARCH_X86_64 2643 #define KMP_INLINE_ARGV_BYTES \ 2644 (4 * CACHE_LINE - \ 2645 ((3 * KMP_PTR_SKIP + 2 * sizeof(int) + 2 * sizeof(kmp_int8) + \ 2646 sizeof(kmp_int16) + sizeof(kmp_uint32)) % \ 2647 CACHE_LINE)) 2648 #else 2649 #define KMP_INLINE_ARGV_BYTES \ 2650 (2 * CACHE_LINE - ((3 * KMP_PTR_SKIP + 2 * sizeof(int)) % CACHE_LINE)) 2651 #endif 2652 #define KMP_INLINE_ARGV_ENTRIES (int)(KMP_INLINE_ARGV_BYTES / KMP_PTR_SKIP) 2653 2654 typedef struct KMP_ALIGN_CACHE kmp_base_team { 2655 // Synchronization Data 2656 // --------------------------------------------------------------------------- 2657 KMP_ALIGN_CACHE kmp_ordered_team_t t_ordered; 2658 kmp_balign_team_t t_bar[bs_last_barrier]; 2659 std::atomic<int> t_construct; // count of single directive encountered by team 2660 char pad[sizeof(kmp_lock_t)]; // padding to maintain performance on big iron 2661 2662 // Master only 2663 // --------------------------------------------------------------------------- 2664 KMP_ALIGN_CACHE int t_master_tid; // tid of master in parent team 2665 int t_master_this_cons; // "this_construct" single counter of master in parent 2666 // team 2667 ident_t *t_ident; // if volatile, have to change too much other crud to 2668 // volatile too 2669 kmp_team_p *t_parent; // parent team 2670 kmp_team_p *t_next_pool; // next free team in the team pool 2671 kmp_disp_t *t_dispatch; // thread's dispatch data 2672 kmp_task_team_t *t_task_team[2]; // Task team struct; switch between 2 2673 #if OMP_40_ENABLED 2674 kmp_proc_bind_t t_proc_bind; // bind type for par region 2675 #endif // OMP_40_ENABLED 2676 #if USE_ITT_BUILD 2677 kmp_uint64 t_region_time; // region begin timestamp 2678 #endif /* USE_ITT_BUILD */ 2679 2680 // Master write, workers read 2681 // -------------------------------------------------------------------------- 2682 KMP_ALIGN_CACHE void **t_argv; 2683 int t_argc; 2684 int t_nproc; // number of threads in team 2685 microtask_t t_pkfn; 2686 launch_t t_invoke; // procedure to launch the microtask 2687 2688 #if OMPT_SUPPORT 2689 ompt_team_info_t ompt_team_info; 2690 ompt_lw_taskteam_t *ompt_serialized_team_info; 2691 #endif 2692 2693 #if KMP_ARCH_X86 || KMP_ARCH_X86_64 2694 kmp_int8 t_fp_control_saved; 2695 kmp_int8 t_pad2b; 2696 kmp_int16 t_x87_fpu_control_word; // FP control regs 2697 kmp_uint32 t_mxcsr; 2698 #endif /* KMP_ARCH_X86 || KMP_ARCH_X86_64 */ 2699 2700 void *t_inline_argv[KMP_INLINE_ARGV_ENTRIES]; 2701 2702 KMP_ALIGN_CACHE kmp_info_t **t_threads; 2703 kmp_taskdata_t 2704 *t_implicit_task_taskdata; // Taskdata for the thread's implicit task 2705 int t_level; // nested parallel level 2706 2707 KMP_ALIGN_CACHE int t_max_argc; 2708 int t_max_nproc; // max threads this team can handle (dynamicly expandable) 2709 int t_serialized; // levels deep of serialized teams 2710 dispatch_shared_info_t *t_disp_buffer; // buffers for dispatch system 2711 int t_id; // team's id, assigned by debugger. 2712 int t_active_level; // nested active parallel level 2713 kmp_r_sched_t t_sched; // run-time schedule for the team 2714 #if OMP_40_ENABLED && KMP_AFFINITY_SUPPORTED 2715 int t_first_place; // first & last place in parent thread's partition. 2716 int t_last_place; // Restore these values to master after par region. 2717 #endif // OMP_40_ENABLED && KMP_AFFINITY_SUPPORTED 2718 #if OMP_50_ENABLED 2719 int t_display_affinity; 2720 #endif 2721 int t_size_changed; // team size was changed?: 0: no, 1: yes, -1: changed via 2722 // omp_set_num_threads() call 2723 #if OMP_50_ENABLED 2724 void *const *t_def_allocator; /* per implicit task default allocator */ 2725 #endif 2726 2727 // Read/write by workers as well 2728 #if (KMP_ARCH_X86 || KMP_ARCH_X86_64) 2729 // Using CACHE_LINE=64 reduces memory footprint, but causes a big perf 2730 // regression of epcc 'parallel' and 'barrier' on fxe256lin01. This extra 2731 // padding serves to fix the performance of epcc 'parallel' and 'barrier' when 2732 // CACHE_LINE=64. TODO: investigate more and get rid if this padding. 2733 char dummy_padding[1024]; 2734 #endif 2735 // Internal control stack for additional nested teams. 2736 KMP_ALIGN_CACHE kmp_internal_control_t *t_control_stack_top; 2737 // for SERIALIZED teams nested 2 or more levels deep 2738 #if OMP_40_ENABLED 2739 // typed flag to store request state of cancellation 2740 std::atomic<kmp_int32> t_cancel_request; 2741 #endif 2742 int t_master_active; // save on fork, restore on join 2743 kmp_taskq_t t_taskq; // this team's task queue 2744 void *t_copypriv_data; // team specific pointer to copyprivate data array 2745 #if KMP_OS_WINDOWS 2746 std::atomic<kmp_uint32> t_copyin_counter; 2747 #endif 2748 #if USE_ITT_BUILD 2749 void *t_stack_id; // team specific stack stitching id (for ittnotify) 2750 #endif /* USE_ITT_BUILD */ 2751 } kmp_base_team_t; 2752 2753 union KMP_ALIGN_CACHE kmp_team { 2754 kmp_base_team_t t; 2755 double t_align; /* use worst case alignment */ 2756 char t_pad[KMP_PAD(kmp_base_team_t, CACHE_LINE)]; 2757 }; 2758 2759 typedef union KMP_ALIGN_CACHE kmp_time_global { 2760 double dt_align; /* use worst case alignment */ 2761 char dt_pad[KMP_PAD(kmp_base_data_t, CACHE_LINE)]; 2762 kmp_base_data_t dt; 2763 } kmp_time_global_t; 2764 2765 typedef struct kmp_base_global { 2766 /* cache-aligned */ 2767 kmp_time_global_t g_time; 2768 2769 /* non cache-aligned */ 2770 volatile int g_abort; 2771 volatile int g_done; 2772 2773 int g_dynamic; 2774 enum dynamic_mode g_dynamic_mode; 2775 } kmp_base_global_t; 2776 2777 typedef union KMP_ALIGN_CACHE kmp_global { 2778 kmp_base_global_t g; 2779 double g_align; /* use worst case alignment */ 2780 char g_pad[KMP_PAD(kmp_base_global_t, CACHE_LINE)]; 2781 } kmp_global_t; 2782 2783 typedef struct kmp_base_root { 2784 // TODO: GEH - combine r_active with r_in_parallel then r_active == 2785 // (r_in_parallel>= 0) 2786 // TODO: GEH - then replace r_active with t_active_levels if we can to reduce 2787 // the synch overhead or keeping r_active 2788 volatile int r_active; /* TRUE if some region in a nest has > 1 thread */ 2789 // GEH: This is misnamed, should be r_in_parallel 2790 volatile int r_nested; // TODO: GEH - This is unused, just remove it entirely. 2791 // keeps a count of active parallel regions per root 2792 std::atomic<int> r_in_parallel; 2793 // GEH: This is misnamed, should be r_active_levels 2794 kmp_team_t *r_root_team; 2795 kmp_team_t *r_hot_team; 2796 kmp_info_t *r_uber_thread; 2797 kmp_lock_t r_begin_lock; 2798 volatile int r_begin; 2799 int r_blocktime; /* blocktime for this root and descendants */ 2800 int r_cg_nthreads; // count of active threads in a contention group 2801 } kmp_base_root_t; 2802 2803 typedef union KMP_ALIGN_CACHE kmp_root { 2804 kmp_base_root_t r; 2805 double r_align; /* use worst case alignment */ 2806 char r_pad[KMP_PAD(kmp_base_root_t, CACHE_LINE)]; 2807 } kmp_root_t; 2808 2809 struct fortran_inx_info { 2810 kmp_int32 data; 2811 }; 2812 2813 /* ------------------------------------------------------------------------ */ 2814 2815 extern int __kmp_settings; 2816 extern int __kmp_duplicate_library_ok; 2817 #if USE_ITT_BUILD 2818 extern int __kmp_forkjoin_frames; 2819 extern int __kmp_forkjoin_frames_mode; 2820 #endif 2821 extern PACKED_REDUCTION_METHOD_T __kmp_force_reduction_method; 2822 extern int __kmp_determ_red; 2823 2824 #ifdef KMP_DEBUG 2825 extern int kmp_a_debug; 2826 extern int kmp_b_debug; 2827 extern int kmp_c_debug; 2828 extern int kmp_d_debug; 2829 extern int kmp_e_debug; 2830 extern int kmp_f_debug; 2831 #endif /* KMP_DEBUG */ 2832 2833 /* For debug information logging using rotating buffer */ 2834 #define KMP_DEBUG_BUF_LINES_INIT 512 2835 #define KMP_DEBUG_BUF_LINES_MIN 1 2836 2837 #define KMP_DEBUG_BUF_CHARS_INIT 128 2838 #define KMP_DEBUG_BUF_CHARS_MIN 2 2839 2840 extern int 2841 __kmp_debug_buf; /* TRUE means use buffer, FALSE means print to stderr */ 2842 extern int __kmp_debug_buf_lines; /* How many lines of debug stored in buffer */ 2843 extern int 2844 __kmp_debug_buf_chars; /* How many characters allowed per line in buffer */ 2845 extern int __kmp_debug_buf_atomic; /* TRUE means use atomic update of buffer 2846 entry pointer */ 2847 2848 extern char *__kmp_debug_buffer; /* Debug buffer itself */ 2849 extern std::atomic<int> __kmp_debug_count; /* Counter for number of lines 2850 printed in buffer so far */ 2851 extern int __kmp_debug_buf_warn_chars; /* Keep track of char increase 2852 recommended in warnings */ 2853 /* end rotating debug buffer */ 2854 2855 #ifdef KMP_DEBUG 2856 extern int __kmp_par_range; /* +1 => only go par for constructs in range */ 2857 2858 #define KMP_PAR_RANGE_ROUTINE_LEN 1024 2859 extern char __kmp_par_range_routine[KMP_PAR_RANGE_ROUTINE_LEN]; 2860 #define KMP_PAR_RANGE_FILENAME_LEN 1024 2861 extern char __kmp_par_range_filename[KMP_PAR_RANGE_FILENAME_LEN]; 2862 extern int __kmp_par_range_lb; 2863 extern int __kmp_par_range_ub; 2864 #endif 2865 2866 /* For printing out dynamic storage map for threads and teams */ 2867 extern int 2868 __kmp_storage_map; /* True means print storage map for threads and teams */ 2869 extern int __kmp_storage_map_verbose; /* True means storage map includes 2870 placement info */ 2871 extern int __kmp_storage_map_verbose_specified; 2872 2873 #if KMP_ARCH_X86 || KMP_ARCH_X86_64 2874 extern kmp_cpuinfo_t __kmp_cpuinfo; 2875 #endif 2876 2877 extern volatile int __kmp_init_serial; 2878 extern volatile int __kmp_init_gtid; 2879 extern volatile int __kmp_init_common; 2880 extern volatile int __kmp_init_middle; 2881 extern volatile int __kmp_init_parallel; 2882 #if KMP_USE_MONITOR 2883 extern volatile int __kmp_init_monitor; 2884 #endif 2885 extern volatile int __kmp_init_user_locks; 2886 extern int __kmp_init_counter; 2887 extern int __kmp_root_counter; 2888 extern int __kmp_version; 2889 2890 /* list of address of allocated caches for commons */ 2891 extern kmp_cached_addr_t *__kmp_threadpriv_cache_list; 2892 2893 /* Barrier algorithm types and options */ 2894 extern kmp_uint32 __kmp_barrier_gather_bb_dflt; 2895 extern kmp_uint32 __kmp_barrier_release_bb_dflt; 2896 extern kmp_bar_pat_e __kmp_barrier_gather_pat_dflt; 2897 extern kmp_bar_pat_e __kmp_barrier_release_pat_dflt; 2898 extern kmp_uint32 __kmp_barrier_gather_branch_bits[bs_last_barrier]; 2899 extern kmp_uint32 __kmp_barrier_release_branch_bits[bs_last_barrier]; 2900 extern kmp_bar_pat_e __kmp_barrier_gather_pattern[bs_last_barrier]; 2901 extern kmp_bar_pat_e __kmp_barrier_release_pattern[bs_last_barrier]; 2902 extern char const *__kmp_barrier_branch_bit_env_name[bs_last_barrier]; 2903 extern char const *__kmp_barrier_pattern_env_name[bs_last_barrier]; 2904 extern char const *__kmp_barrier_type_name[bs_last_barrier]; 2905 extern char const *__kmp_barrier_pattern_name[bp_last_bar]; 2906 2907 /* Global Locks */ 2908 extern kmp_bootstrap_lock_t __kmp_initz_lock; /* control initialization */ 2909 extern kmp_bootstrap_lock_t __kmp_forkjoin_lock; /* control fork/join access */ 2910 extern kmp_bootstrap_lock_t __kmp_task_team_lock; 2911 extern kmp_bootstrap_lock_t 2912 __kmp_exit_lock; /* exit() is not always thread-safe */ 2913 #if KMP_USE_MONITOR 2914 extern kmp_bootstrap_lock_t 2915 __kmp_monitor_lock; /* control monitor thread creation */ 2916 #endif 2917 extern kmp_bootstrap_lock_t 2918 __kmp_tp_cached_lock; /* used for the hack to allow threadprivate cache and 2919 __kmp_threads expansion to co-exist */ 2920 2921 extern kmp_lock_t __kmp_global_lock; /* control OS/global access */ 2922 extern kmp_queuing_lock_t __kmp_dispatch_lock; /* control dispatch access */ 2923 extern kmp_lock_t __kmp_debug_lock; /* control I/O access for KMP_DEBUG */ 2924 2925 /* used for yielding spin-waits */ 2926 extern unsigned int __kmp_init_wait; /* initial number of spin-tests */ 2927 extern unsigned int __kmp_next_wait; /* susequent number of spin-tests */ 2928 2929 extern enum library_type __kmp_library; 2930 2931 extern enum sched_type __kmp_sched; /* default runtime scheduling */ 2932 extern enum sched_type __kmp_static; /* default static scheduling method */ 2933 extern enum sched_type __kmp_guided; /* default guided scheduling method */ 2934 extern enum sched_type __kmp_auto; /* default auto scheduling method */ 2935 extern int __kmp_chunk; /* default runtime chunk size */ 2936 2937 extern size_t __kmp_stksize; /* stack size per thread */ 2938 #if KMP_USE_MONITOR 2939 extern size_t __kmp_monitor_stksize; /* stack size for monitor thread */ 2940 #endif 2941 extern size_t __kmp_stkoffset; /* stack offset per thread */ 2942 extern int __kmp_stkpadding; /* Should we pad root thread(s) stack */ 2943 2944 extern size_t 2945 __kmp_malloc_pool_incr; /* incremental size of pool for kmp_malloc() */ 2946 extern int __kmp_env_stksize; /* was KMP_STACKSIZE specified? */ 2947 extern int __kmp_env_blocktime; /* was KMP_BLOCKTIME specified? */ 2948 extern int __kmp_env_checks; /* was KMP_CHECKS specified? */ 2949 extern int __kmp_env_consistency_check; // was KMP_CONSISTENCY_CHECK specified? 2950 extern int __kmp_generate_warnings; /* should we issue warnings? */ 2951 extern int __kmp_reserve_warn; /* have we issued reserve_threads warning? */ 2952 2953 #ifdef DEBUG_SUSPEND 2954 extern int __kmp_suspend_count; /* count inside __kmp_suspend_template() */ 2955 #endif 2956 2957 extern kmp_uint32 __kmp_yield_init; 2958 extern kmp_uint32 __kmp_yield_next; 2959 2960 #if KMP_USE_MONITOR 2961 extern kmp_uint32 __kmp_yielding_on; 2962 #endif 2963 extern kmp_uint32 __kmp_yield_cycle; 2964 extern kmp_int32 __kmp_yield_on_count; 2965 extern kmp_int32 __kmp_yield_off_count; 2966 2967 /* ------------------------------------------------------------------------- */ 2968 extern int __kmp_allThreadsSpecified; 2969 2970 extern size_t __kmp_align_alloc; 2971 /* following data protected by initialization routines */ 2972 extern int __kmp_xproc; /* number of processors in the system */ 2973 extern int __kmp_avail_proc; /* number of processors available to the process */ 2974 extern size_t __kmp_sys_min_stksize; /* system-defined minimum stack size */ 2975 extern int __kmp_sys_max_nth; /* system-imposed maximum number of threads */ 2976 // maximum total number of concurrently-existing threads on device 2977 extern int __kmp_max_nth; 2978 // maximum total number of concurrently-existing threads in a contention group 2979 extern int __kmp_cg_max_nth; 2980 extern int __kmp_teams_max_nth; // max threads used in a teams construct 2981 extern int __kmp_threads_capacity; /* capacity of the arrays __kmp_threads and 2982 __kmp_root */ 2983 extern int __kmp_dflt_team_nth; /* default number of threads in a parallel 2984 region a la OMP_NUM_THREADS */ 2985 extern int __kmp_dflt_team_nth_ub; /* upper bound on "" determined at serial 2986 initialization */ 2987 extern int __kmp_tp_capacity; /* capacity of __kmp_threads if threadprivate is 2988 used (fixed) */ 2989 extern int __kmp_tp_cached; /* whether threadprivate cache has been created 2990 (__kmpc_threadprivate_cached()) */ 2991 extern int __kmp_dflt_nested; /* nested parallelism enabled by default a la 2992 OMP_NESTED */ 2993 extern int __kmp_dflt_blocktime; /* number of milliseconds to wait before 2994 blocking (env setting) */ 2995 #if KMP_USE_MONITOR 2996 extern int 2997 __kmp_monitor_wakeups; /* number of times monitor wakes up per second */ 2998 extern int __kmp_bt_intervals; /* number of monitor timestamp intervals before 2999 blocking */ 3000 #endif 3001 #ifdef KMP_ADJUST_BLOCKTIME 3002 extern int __kmp_zero_bt; /* whether blocktime has been forced to zero */ 3003 #endif /* KMP_ADJUST_BLOCKTIME */ 3004 #ifdef KMP_DFLT_NTH_CORES 3005 extern int __kmp_ncores; /* Total number of cores for threads placement */ 3006 #endif 3007 /* Number of millisecs to delay on abort for Intel(R) VTune(TM) tools */ 3008 extern int __kmp_abort_delay; 3009 3010 extern int __kmp_need_register_atfork_specified; 3011 extern int 3012 __kmp_need_register_atfork; /* At initialization, call pthread_atfork to 3013 install fork handler */ 3014 extern int __kmp_gtid_mode; /* Method of getting gtid, values: 3015 0 - not set, will be set at runtime 3016 1 - using stack search 3017 2 - dynamic TLS (pthread_getspecific(Linux* OS/OS 3018 X*) or TlsGetValue(Windows* OS)) 3019 3 - static TLS (__declspec(thread) __kmp_gtid), 3020 Linux* OS .so only. */ 3021 extern int 3022 __kmp_adjust_gtid_mode; /* If true, adjust method based on #threads */ 3023 #ifdef KMP_TDATA_GTID 3024 extern KMP_THREAD_LOCAL int __kmp_gtid; 3025 #endif 3026 extern int __kmp_tls_gtid_min; /* #threads below which use sp search for gtid */ 3027 extern int __kmp_foreign_tp; // If true, separate TP var for each foreign thread 3028 #if KMP_ARCH_X86 || KMP_ARCH_X86_64 3029 extern int __kmp_inherit_fp_control; // copy fp creg(s) parent->workers at fork 3030 extern kmp_int16 __kmp_init_x87_fpu_control_word; // init thread's FP ctrl reg 3031 extern kmp_uint32 __kmp_init_mxcsr; /* init thread's mxscr */ 3032 #endif /* KMP_ARCH_X86 || KMP_ARCH_X86_64 */ 3033 3034 extern int __kmp_dflt_max_active_levels; /* max_active_levels for nested 3035 parallelism enabled by default via 3036 OMP_MAX_ACTIVE_LEVELS */ 3037 extern int __kmp_dispatch_num_buffers; /* max possible dynamic loops in 3038 concurrent execution per team */ 3039 #if KMP_NESTED_HOT_TEAMS 3040 extern int __kmp_hot_teams_mode; 3041 extern int __kmp_hot_teams_max_level; 3042 #endif 3043 3044 #if KMP_OS_LINUX 3045 extern enum clock_function_type __kmp_clock_function; 3046 extern int __kmp_clock_function_param; 3047 #endif /* KMP_OS_LINUX */ 3048 3049 #if KMP_MIC_SUPPORTED 3050 extern enum mic_type __kmp_mic_type; 3051 #endif 3052 3053 #ifdef USE_LOAD_BALANCE 3054 extern double __kmp_load_balance_interval; // load balance algorithm interval 3055 #endif /* USE_LOAD_BALANCE */ 3056 3057 // OpenMP 3.1 - Nested num threads array 3058 typedef struct kmp_nested_nthreads_t { 3059 int *nth; 3060 int size; 3061 int used; 3062 } kmp_nested_nthreads_t; 3063 3064 extern kmp_nested_nthreads_t __kmp_nested_nth; 3065 3066 #if KMP_USE_ADAPTIVE_LOCKS 3067 3068 // Parameters for the speculative lock backoff system. 3069 struct kmp_adaptive_backoff_params_t { 3070 // Number of soft retries before it counts as a hard retry. 3071 kmp_uint32 max_soft_retries; 3072 // Badness is a bit mask : 0,1,3,7,15,... on each hard failure we move one to 3073 // the right 3074 kmp_uint32 max_badness; 3075 }; 3076 3077 extern kmp_adaptive_backoff_params_t __kmp_adaptive_backoff_params; 3078 3079 #if KMP_DEBUG_ADAPTIVE_LOCKS 3080 extern const char *__kmp_speculative_statsfile; 3081 #endif 3082 3083 #endif // KMP_USE_ADAPTIVE_LOCKS 3084 3085 #if OMP_40_ENABLED 3086 extern int __kmp_display_env; /* TRUE or FALSE */ 3087 extern int __kmp_display_env_verbose; /* TRUE if OMP_DISPLAY_ENV=VERBOSE */ 3088 extern int __kmp_omp_cancellation; /* TRUE or FALSE */ 3089 #endif 3090 3091 /* ------------------------------------------------------------------------- */ 3092 3093 /* the following are protected by the fork/join lock */ 3094 /* write: lock read: anytime */ 3095 extern kmp_info_t **__kmp_threads; /* Descriptors for the threads */ 3096 /* read/write: lock */ 3097 extern volatile kmp_team_t *__kmp_team_pool; 3098 extern volatile kmp_info_t *__kmp_thread_pool; 3099 extern kmp_info_t *__kmp_thread_pool_insert_pt; 3100 3101 // total num threads reachable from some root thread including all root threads 3102 extern volatile int __kmp_nth; 3103 /* total number of threads reachable from some root thread including all root 3104 threads, and those in the thread pool */ 3105 extern volatile int __kmp_all_nth; 3106 extern int __kmp_thread_pool_nth; 3107 extern std::atomic<int> __kmp_thread_pool_active_nth; 3108 3109 extern kmp_root_t **__kmp_root; /* root of thread hierarchy */ 3110 /* end data protected by fork/join lock */ 3111 /* ------------------------------------------------------------------------- */ 3112 3113 #define __kmp_get_gtid() __kmp_get_global_thread_id() 3114 #define __kmp_entry_gtid() __kmp_get_global_thread_id_reg() 3115 #define __kmp_get_tid() (__kmp_tid_from_gtid(__kmp_get_gtid())) 3116 #define __kmp_get_team() (__kmp_threads[(__kmp_get_gtid())]->th.th_team) 3117 #define __kmp_get_thread() (__kmp_thread_from_gtid(__kmp_get_gtid())) 3118 3119 // AT: Which way is correct? 3120 // AT: 1. nproc = __kmp_threads[ ( gtid ) ] -> th.th_team -> t.t_nproc; 3121 // AT: 2. nproc = __kmp_threads[ ( gtid ) ] -> th.th_team_nproc; 3122 #define __kmp_get_team_num_threads(gtid) \ 3123 (__kmp_threads[(gtid)]->th.th_team->t.t_nproc) 3124 3125 static inline bool KMP_UBER_GTID(int gtid) { 3126 KMP_DEBUG_ASSERT(gtid >= KMP_GTID_MIN); 3127 KMP_DEBUG_ASSERT(gtid < __kmp_threads_capacity); 3128 return (gtid >= 0 && __kmp_root[gtid] && __kmp_threads[gtid] && 3129 __kmp_threads[gtid] == __kmp_root[gtid]->r.r_uber_thread); 3130 } 3131 3132 static inline int __kmp_tid_from_gtid(int gtid) { 3133 KMP_DEBUG_ASSERT(gtid >= 0); 3134 return __kmp_threads[gtid]->th.th_info.ds.ds_tid; 3135 } 3136 3137 static inline int __kmp_gtid_from_tid(int tid, const kmp_team_t *team) { 3138 KMP_DEBUG_ASSERT(tid >= 0 && team); 3139 return team->t.t_threads[tid]->th.th_info.ds.ds_gtid; 3140 } 3141 3142 static inline int __kmp_gtid_from_thread(const kmp_info_t *thr) { 3143 KMP_DEBUG_ASSERT(thr); 3144 return thr->th.th_info.ds.ds_gtid; 3145 } 3146 3147 static inline kmp_info_t *__kmp_thread_from_gtid(int gtid) { 3148 KMP_DEBUG_ASSERT(gtid >= 0); 3149 return __kmp_threads[gtid]; 3150 } 3151 3152 static inline kmp_team_t *__kmp_team_from_gtid(int gtid) { 3153 KMP_DEBUG_ASSERT(gtid >= 0); 3154 return __kmp_threads[gtid]->th.th_team; 3155 } 3156 3157 /* ------------------------------------------------------------------------- */ 3158 3159 extern kmp_global_t __kmp_global; /* global status */ 3160 3161 extern kmp_info_t __kmp_monitor; 3162 // For Debugging Support Library 3163 extern std::atomic<kmp_uint32> __kmp_team_counter; 3164 // For Debugging Support Library 3165 extern std::atomic<kmp_uint32> __kmp_task_counter; 3166 3167 #if USE_DEBUGGER 3168 #define _KMP_GEN_ID(counter) \ 3169 (__kmp_debugging ? KMP_ATOMIC_INC(&counter) + 1 : ~0) 3170 #else 3171 #define _KMP_GEN_ID(counter) (~0) 3172 #endif /* USE_DEBUGGER */ 3173 3174 #define KMP_GEN_TASK_ID() _KMP_GEN_ID(__kmp_task_counter) 3175 #define KMP_GEN_TEAM_ID() _KMP_GEN_ID(__kmp_team_counter) 3176 3177 /* ------------------------------------------------------------------------ */ 3178 3179 extern void __kmp_print_storage_map_gtid(int gtid, void *p1, void *p2, 3180 size_t size, char const *format, ...); 3181 3182 extern void __kmp_serial_initialize(void); 3183 extern void __kmp_middle_initialize(void); 3184 extern void __kmp_parallel_initialize(void); 3185 3186 extern void __kmp_internal_begin(void); 3187 extern void __kmp_internal_end_library(int gtid); 3188 extern void __kmp_internal_end_thread(int gtid); 3189 extern void __kmp_internal_end_atexit(void); 3190 extern void __kmp_internal_end_fini(void); 3191 extern void __kmp_internal_end_dtor(void); 3192 extern void __kmp_internal_end_dest(void *); 3193 3194 extern int __kmp_register_root(int initial_thread); 3195 extern void __kmp_unregister_root(int gtid); 3196 3197 extern int __kmp_ignore_mppbeg(void); 3198 extern int __kmp_ignore_mppend(void); 3199 3200 extern int __kmp_enter_single(int gtid, ident_t *id_ref, int push_ws); 3201 extern void __kmp_exit_single(int gtid); 3202 3203 extern void __kmp_parallel_deo(int *gtid_ref, int *cid_ref, ident_t *loc_ref); 3204 extern void __kmp_parallel_dxo(int *gtid_ref, int *cid_ref, ident_t *loc_ref); 3205 3206 #ifdef USE_LOAD_BALANCE 3207 extern int __kmp_get_load_balance(int); 3208 #endif 3209 3210 extern int __kmp_get_global_thread_id(void); 3211 extern int __kmp_get_global_thread_id_reg(void); 3212 extern void __kmp_exit_thread(int exit_status); 3213 extern void __kmp_abort(char const *format, ...); 3214 extern void __kmp_abort_thread(void); 3215 KMP_NORETURN extern void __kmp_abort_process(void); 3216 extern void __kmp_warn(char const *format, ...); 3217 3218 extern void __kmp_set_num_threads(int new_nth, int gtid); 3219 3220 // Returns current thread (pointer to kmp_info_t). Current thread *must* be 3221 // registered. 3222 static inline kmp_info_t *__kmp_entry_thread() { 3223 int gtid = __kmp_entry_gtid(); 3224 3225 return __kmp_threads[gtid]; 3226 } 3227 3228 extern void __kmp_set_max_active_levels(int gtid, int new_max_active_levels); 3229 extern int __kmp_get_max_active_levels(int gtid); 3230 extern int __kmp_get_ancestor_thread_num(int gtid, int level); 3231 extern int __kmp_get_team_size(int gtid, int level); 3232 extern void __kmp_set_schedule(int gtid, kmp_sched_t new_sched, int chunk); 3233 extern void __kmp_get_schedule(int gtid, kmp_sched_t *sched, int *chunk); 3234 3235 extern unsigned short __kmp_get_random(kmp_info_t *thread); 3236 extern void __kmp_init_random(kmp_info_t *thread); 3237 3238 extern kmp_r_sched_t __kmp_get_schedule_global(void); 3239 extern void __kmp_adjust_num_threads(int new_nproc); 3240 3241 extern void *___kmp_allocate(size_t size KMP_SRC_LOC_DECL); 3242 extern void *___kmp_page_allocate(size_t size KMP_SRC_LOC_DECL); 3243 extern void ___kmp_free(void *ptr KMP_SRC_LOC_DECL); 3244 #define __kmp_allocate(size) ___kmp_allocate((size)KMP_SRC_LOC_CURR) 3245 #define __kmp_page_allocate(size) ___kmp_page_allocate((size)KMP_SRC_LOC_CURR) 3246 #define __kmp_free(ptr) ___kmp_free((ptr)KMP_SRC_LOC_CURR) 3247 3248 #if USE_FAST_MEMORY 3249 extern void *___kmp_fast_allocate(kmp_info_t *this_thr, 3250 size_t size KMP_SRC_LOC_DECL); 3251 extern void ___kmp_fast_free(kmp_info_t *this_thr, void *ptr KMP_SRC_LOC_DECL); 3252 extern void __kmp_free_fast_memory(kmp_info_t *this_thr); 3253 extern void __kmp_initialize_fast_memory(kmp_info_t *this_thr); 3254 #define __kmp_fast_allocate(this_thr, size) \ 3255 ___kmp_fast_allocate((this_thr), (size)KMP_SRC_LOC_CURR) 3256 #define __kmp_fast_free(this_thr, ptr) \ 3257 ___kmp_fast_free((this_thr), (ptr)KMP_SRC_LOC_CURR) 3258 #endif 3259 3260 extern void *___kmp_thread_malloc(kmp_info_t *th, size_t size KMP_SRC_LOC_DECL); 3261 extern void *___kmp_thread_calloc(kmp_info_t *th, size_t nelem, 3262 size_t elsize KMP_SRC_LOC_DECL); 3263 extern void *___kmp_thread_realloc(kmp_info_t *th, void *ptr, 3264 size_t size KMP_SRC_LOC_DECL); 3265 extern void ___kmp_thread_free(kmp_info_t *th, void *ptr KMP_SRC_LOC_DECL); 3266 #define __kmp_thread_malloc(th, size) \ 3267 ___kmp_thread_malloc((th), (size)KMP_SRC_LOC_CURR) 3268 #define __kmp_thread_calloc(th, nelem, elsize) \ 3269 ___kmp_thread_calloc((th), (nelem), (elsize)KMP_SRC_LOC_CURR) 3270 #define __kmp_thread_realloc(th, ptr, size) \ 3271 ___kmp_thread_realloc((th), (ptr), (size)KMP_SRC_LOC_CURR) 3272 #define __kmp_thread_free(th, ptr) \ 3273 ___kmp_thread_free((th), (ptr)KMP_SRC_LOC_CURR) 3274 3275 #define KMP_INTERNAL_MALLOC(sz) malloc(sz) 3276 #define KMP_INTERNAL_FREE(p) free(p) 3277 #define KMP_INTERNAL_REALLOC(p, sz) realloc((p), (sz)) 3278 #define KMP_INTERNAL_CALLOC(n, sz) calloc((n), (sz)) 3279 3280 extern void __kmp_push_num_threads(ident_t *loc, int gtid, int num_threads); 3281 3282 #if OMP_40_ENABLED 3283 extern void __kmp_push_proc_bind(ident_t *loc, int gtid, 3284 kmp_proc_bind_t proc_bind); 3285 extern void __kmp_push_num_teams(ident_t *loc, int gtid, int num_teams, 3286 int num_threads); 3287 #endif 3288 3289 extern void __kmp_yield(int cond); 3290 3291 extern void __kmpc_dispatch_init_4(ident_t *loc, kmp_int32 gtid, 3292 enum sched_type schedule, kmp_int32 lb, 3293 kmp_int32 ub, kmp_int32 st, kmp_int32 chunk); 3294 extern void __kmpc_dispatch_init_4u(ident_t *loc, kmp_int32 gtid, 3295 enum sched_type schedule, kmp_uint32 lb, 3296 kmp_uint32 ub, kmp_int32 st, 3297 kmp_int32 chunk); 3298 extern void __kmpc_dispatch_init_8(ident_t *loc, kmp_int32 gtid, 3299 enum sched_type schedule, kmp_int64 lb, 3300 kmp_int64 ub, kmp_int64 st, kmp_int64 chunk); 3301 extern void __kmpc_dispatch_init_8u(ident_t *loc, kmp_int32 gtid, 3302 enum sched_type schedule, kmp_uint64 lb, 3303 kmp_uint64 ub, kmp_int64 st, 3304 kmp_int64 chunk); 3305 3306 extern int __kmpc_dispatch_next_4(ident_t *loc, kmp_int32 gtid, 3307 kmp_int32 *p_last, kmp_int32 *p_lb, 3308 kmp_int32 *p_ub, kmp_int32 *p_st); 3309 extern int __kmpc_dispatch_next_4u(ident_t *loc, kmp_int32 gtid, 3310 kmp_int32 *p_last, kmp_uint32 *p_lb, 3311 kmp_uint32 *p_ub, kmp_int32 *p_st); 3312 extern int __kmpc_dispatch_next_8(ident_t *loc, kmp_int32 gtid, 3313 kmp_int32 *p_last, kmp_int64 *p_lb, 3314 kmp_int64 *p_ub, kmp_int64 *p_st); 3315 extern int __kmpc_dispatch_next_8u(ident_t *loc, kmp_int32 gtid, 3316 kmp_int32 *p_last, kmp_uint64 *p_lb, 3317 kmp_uint64 *p_ub, kmp_int64 *p_st); 3318 3319 extern void __kmpc_dispatch_fini_4(ident_t *loc, kmp_int32 gtid); 3320 extern void __kmpc_dispatch_fini_8(ident_t *loc, kmp_int32 gtid); 3321 extern void __kmpc_dispatch_fini_4u(ident_t *loc, kmp_int32 gtid); 3322 extern void __kmpc_dispatch_fini_8u(ident_t *loc, kmp_int32 gtid); 3323 3324 #ifdef KMP_GOMP_COMPAT 3325 3326 extern void __kmp_aux_dispatch_init_4(ident_t *loc, kmp_int32 gtid, 3327 enum sched_type schedule, kmp_int32 lb, 3328 kmp_int32 ub, kmp_int32 st, 3329 kmp_int32 chunk, int push_ws); 3330 extern void __kmp_aux_dispatch_init_4u(ident_t *loc, kmp_int32 gtid, 3331 enum sched_type schedule, kmp_uint32 lb, 3332 kmp_uint32 ub, kmp_int32 st, 3333 kmp_int32 chunk, int push_ws); 3334 extern void __kmp_aux_dispatch_init_8(ident_t *loc, kmp_int32 gtid, 3335 enum sched_type schedule, kmp_int64 lb, 3336 kmp_int64 ub, kmp_int64 st, 3337 kmp_int64 chunk, int push_ws); 3338 extern void __kmp_aux_dispatch_init_8u(ident_t *loc, kmp_int32 gtid, 3339 enum sched_type schedule, kmp_uint64 lb, 3340 kmp_uint64 ub, kmp_int64 st, 3341 kmp_int64 chunk, int push_ws); 3342 extern void __kmp_aux_dispatch_fini_chunk_4(ident_t *loc, kmp_int32 gtid); 3343 extern void __kmp_aux_dispatch_fini_chunk_8(ident_t *loc, kmp_int32 gtid); 3344 extern void __kmp_aux_dispatch_fini_chunk_4u(ident_t *loc, kmp_int32 gtid); 3345 extern void __kmp_aux_dispatch_fini_chunk_8u(ident_t *loc, kmp_int32 gtid); 3346 3347 #endif /* KMP_GOMP_COMPAT */ 3348 3349 extern kmp_uint32 __kmp_eq_4(kmp_uint32 value, kmp_uint32 checker); 3350 extern kmp_uint32 __kmp_neq_4(kmp_uint32 value, kmp_uint32 checker); 3351 extern kmp_uint32 __kmp_lt_4(kmp_uint32 value, kmp_uint32 checker); 3352 extern kmp_uint32 __kmp_ge_4(kmp_uint32 value, kmp_uint32 checker); 3353 extern kmp_uint32 __kmp_le_4(kmp_uint32 value, kmp_uint32 checker); 3354 extern kmp_uint32 __kmp_wait_yield_4(kmp_uint32 volatile *spinner, 3355 kmp_uint32 checker, 3356 kmp_uint32 (*pred)(kmp_uint32, kmp_uint32), 3357 void *obj); 3358 extern void __kmp_wait_yield_4_ptr(void *spinner, kmp_uint32 checker, 3359 kmp_uint32 (*pred)(void *, kmp_uint32), 3360 void *obj); 3361 3362 class kmp_flag_32; 3363 class kmp_flag_64; 3364 class kmp_flag_oncore; 3365 extern void __kmp_wait_64(kmp_info_t *this_thr, kmp_flag_64 *flag, 3366 int final_spin 3367 #if USE_ITT_BUILD 3368 , 3369 void *itt_sync_obj 3370 #endif 3371 ); 3372 extern void __kmp_release_64(kmp_flag_64 *flag); 3373 3374 extern void __kmp_infinite_loop(void); 3375 3376 extern void __kmp_cleanup(void); 3377 3378 #if KMP_HANDLE_SIGNALS 3379 extern int __kmp_handle_signals; 3380 extern void __kmp_install_signals(int parallel_init); 3381 extern void __kmp_remove_signals(void); 3382 #endif 3383 3384 extern void __kmp_clear_system_time(void); 3385 extern void __kmp_read_system_time(double *delta); 3386 3387 extern void __kmp_check_stack_overlap(kmp_info_t *thr); 3388 3389 extern void __kmp_expand_host_name(char *buffer, size_t size); 3390 extern void __kmp_expand_file_name(char *result, size_t rlen, char *pattern); 3391 3392 #if KMP_ARCH_X86 || KMP_ARCH_X86_64 3393 extern void 3394 __kmp_initialize_system_tick(void); /* Initialize timer tick value */ 3395 #endif 3396 3397 extern void 3398 __kmp_runtime_initialize(void); /* machine specific initialization */ 3399 extern void __kmp_runtime_destroy(void); 3400 3401 #if KMP_AFFINITY_SUPPORTED 3402 extern char *__kmp_affinity_print_mask(char *buf, int buf_len, 3403 kmp_affin_mask_t *mask); 3404 extern kmp_str_buf_t *__kmp_affinity_str_buf_mask(kmp_str_buf_t *buf, 3405 kmp_affin_mask_t *mask); 3406 extern void __kmp_affinity_initialize(void); 3407 extern void __kmp_affinity_uninitialize(void); 3408 extern void __kmp_affinity_set_init_mask( 3409 int gtid, int isa_root); /* set affinity according to KMP_AFFINITY */ 3410 #if OMP_40_ENABLED 3411 extern void __kmp_affinity_set_place(int gtid); 3412 #endif 3413 extern void __kmp_affinity_determine_capable(const char *env_var); 3414 extern int __kmp_aux_set_affinity(void **mask); 3415 extern int __kmp_aux_get_affinity(void **mask); 3416 extern int __kmp_aux_get_affinity_max_proc(); 3417 extern int __kmp_aux_set_affinity_mask_proc(int proc, void **mask); 3418 extern int __kmp_aux_unset_affinity_mask_proc(int proc, void **mask); 3419 extern int __kmp_aux_get_affinity_mask_proc(int proc, void **mask); 3420 extern void __kmp_balanced_affinity(kmp_info_t *th, int team_size); 3421 #if KMP_OS_LINUX 3422 extern int kmp_set_thread_affinity_mask_initial(void); 3423 #endif 3424 #endif /* KMP_AFFINITY_SUPPORTED */ 3425 #if OMP_50_ENABLED 3426 // No need for KMP_AFFINITY_SUPPORTED guard as only one field in the 3427 // format string is for affinity, so platforms that do not support 3428 // affinity can still use the other fields, e.g., %n for num_threads 3429 extern size_t __kmp_aux_capture_affinity(int gtid, const char *format, 3430 kmp_str_buf_t *buffer); 3431 extern void __kmp_aux_display_affinity(int gtid, const char *format); 3432 #endif 3433 3434 extern void __kmp_cleanup_hierarchy(); 3435 extern void __kmp_get_hierarchy(kmp_uint32 nproc, kmp_bstate_t *thr_bar); 3436 3437 #if KMP_USE_FUTEX 3438 3439 extern int __kmp_futex_determine_capable(void); 3440 3441 #endif // KMP_USE_FUTEX 3442 3443 extern void __kmp_gtid_set_specific(int gtid); 3444 extern int __kmp_gtid_get_specific(void); 3445 3446 extern double __kmp_read_cpu_time(void); 3447 3448 extern int __kmp_read_system_info(struct kmp_sys_info *info); 3449 3450 #if KMP_USE_MONITOR 3451 extern void __kmp_create_monitor(kmp_info_t *th); 3452 #endif 3453 3454 extern void *__kmp_launch_thread(kmp_info_t *thr); 3455 3456 extern void __kmp_create_worker(int gtid, kmp_info_t *th, size_t stack_size); 3457 3458 #if KMP_OS_WINDOWS 3459 extern int __kmp_still_running(kmp_info_t *th); 3460 extern int __kmp_is_thread_alive(kmp_info_t *th, DWORD *exit_val); 3461 extern void __kmp_free_handle(kmp_thread_t tHandle); 3462 #endif 3463 3464 #if KMP_USE_MONITOR 3465 extern void __kmp_reap_monitor(kmp_info_t *th); 3466 #endif 3467 extern void __kmp_reap_worker(kmp_info_t *th); 3468 extern void __kmp_terminate_thread(int gtid); 3469 3470 extern void __kmp_suspend_32(int th_gtid, kmp_flag_32 *flag); 3471 extern void __kmp_suspend_64(int th_gtid, kmp_flag_64 *flag); 3472 extern void __kmp_suspend_oncore(int th_gtid, kmp_flag_oncore *flag); 3473 extern void __kmp_resume_32(int target_gtid, kmp_flag_32 *flag); 3474 extern void __kmp_resume_64(int target_gtid, kmp_flag_64 *flag); 3475 extern void __kmp_resume_oncore(int target_gtid, kmp_flag_oncore *flag); 3476 3477 extern void __kmp_elapsed(double *); 3478 extern void __kmp_elapsed_tick(double *); 3479 3480 extern void __kmp_enable(int old_state); 3481 extern void __kmp_disable(int *old_state); 3482 3483 extern void __kmp_thread_sleep(int millis); 3484 3485 extern void __kmp_common_initialize(void); 3486 extern void __kmp_common_destroy(void); 3487 extern void __kmp_common_destroy_gtid(int gtid); 3488 3489 #if KMP_OS_UNIX 3490 extern void __kmp_register_atfork(void); 3491 #endif 3492 extern void __kmp_suspend_initialize(void); 3493 extern void __kmp_suspend_uninitialize_thread(kmp_info_t *th); 3494 3495 extern kmp_info_t *__kmp_allocate_thread(kmp_root_t *root, kmp_team_t *team, 3496 int tid); 3497 #if OMP_40_ENABLED 3498 extern kmp_team_t * 3499 __kmp_allocate_team(kmp_root_t *root, int new_nproc, int max_nproc, 3500 #if OMPT_SUPPORT 3501 ompt_data_t ompt_parallel_data, 3502 #endif 3503 kmp_proc_bind_t proc_bind, kmp_internal_control_t *new_icvs, 3504 int argc USE_NESTED_HOT_ARG(kmp_info_t *thr)); 3505 #else 3506 extern kmp_team_t * 3507 __kmp_allocate_team(kmp_root_t *root, int new_nproc, int max_nproc, 3508 #if OMPT_SUPPORT 3509 ompt_id_t ompt_parallel_id, 3510 #endif 3511 kmp_internal_control_t *new_icvs, 3512 int argc USE_NESTED_HOT_ARG(kmp_info_t *thr)); 3513 #endif // OMP_40_ENABLED 3514 extern void __kmp_free_thread(kmp_info_t *); 3515 extern void __kmp_free_team(kmp_root_t *, 3516 kmp_team_t *USE_NESTED_HOT_ARG(kmp_info_t *)); 3517 extern kmp_team_t *__kmp_reap_team(kmp_team_t *); 3518 3519 /* ------------------------------------------------------------------------ */ 3520 3521 extern void __kmp_initialize_bget(kmp_info_t *th); 3522 extern void __kmp_finalize_bget(kmp_info_t *th); 3523 3524 KMP_EXPORT void *kmpc_malloc(size_t size); 3525 KMP_EXPORT void *kmpc_aligned_malloc(size_t size, size_t alignment); 3526 KMP_EXPORT void *kmpc_calloc(size_t nelem, size_t elsize); 3527 KMP_EXPORT void *kmpc_realloc(void *ptr, size_t size); 3528 KMP_EXPORT void kmpc_free(void *ptr); 3529 3530 /* declarations for internal use */ 3531 3532 extern int __kmp_barrier(enum barrier_type bt, int gtid, int is_split, 3533 size_t reduce_size, void *reduce_data, 3534 void (*reduce)(void *, void *)); 3535 extern void __kmp_end_split_barrier(enum barrier_type bt, int gtid); 3536 3537 /*! 3538 * Tell the fork call which compiler generated the fork call, and therefore how 3539 * to deal with the call. 3540 */ 3541 enum fork_context_e { 3542 fork_context_gnu, /**< Called from GNU generated code, so must not invoke the 3543 microtask internally. */ 3544 fork_context_intel, /**< Called from Intel generated code. */ 3545 fork_context_last 3546 }; 3547 extern int __kmp_fork_call(ident_t *loc, int gtid, 3548 enum fork_context_e fork_context, kmp_int32 argc, 3549 microtask_t microtask, launch_t invoker, 3550 /* TODO: revert workaround for Intel(R) 64 tracker #96 */ 3551 #if (KMP_ARCH_ARM || KMP_ARCH_X86_64 || KMP_ARCH_AARCH64) && KMP_OS_LINUX 3552 va_list *ap 3553 #else 3554 va_list ap 3555 #endif 3556 ); 3557 3558 extern void __kmp_join_call(ident_t *loc, int gtid 3559 #if OMPT_SUPPORT 3560 , 3561 enum fork_context_e fork_context 3562 #endif 3563 #if OMP_40_ENABLED 3564 , 3565 int exit_teams = 0 3566 #endif 3567 ); 3568 3569 extern void __kmp_serialized_parallel(ident_t *id, kmp_int32 gtid); 3570 extern void __kmp_internal_fork(ident_t *id, int gtid, kmp_team_t *team); 3571 extern void __kmp_internal_join(ident_t *id, int gtid, kmp_team_t *team); 3572 extern int __kmp_invoke_task_func(int gtid); 3573 extern void __kmp_run_before_invoked_task(int gtid, int tid, 3574 kmp_info_t *this_thr, 3575 kmp_team_t *team); 3576 extern void __kmp_run_after_invoked_task(int gtid, int tid, 3577 kmp_info_t *this_thr, 3578 kmp_team_t *team); 3579 3580 // should never have been exported 3581 KMP_EXPORT int __kmpc_invoke_task_func(int gtid); 3582 #if OMP_40_ENABLED 3583 extern int __kmp_invoke_teams_master(int gtid); 3584 extern void __kmp_teams_master(int gtid); 3585 extern int __kmp_aux_get_team_num(); 3586 extern int __kmp_aux_get_num_teams(); 3587 #endif 3588 extern void __kmp_save_internal_controls(kmp_info_t *thread); 3589 extern void __kmp_user_set_library(enum library_type arg); 3590 extern void __kmp_aux_set_library(enum library_type arg); 3591 extern void __kmp_aux_set_stacksize(size_t arg); 3592 extern void __kmp_aux_set_blocktime(int arg, kmp_info_t *thread, int tid); 3593 extern void __kmp_aux_set_defaults(char const *str, int len); 3594 3595 /* Functions called from __kmp_aux_env_initialize() in kmp_settings.cpp */ 3596 void kmpc_set_blocktime(int arg); 3597 void ompc_set_nested(int flag); 3598 void ompc_set_dynamic(int flag); 3599 void ompc_set_num_threads(int arg); 3600 3601 extern void __kmp_push_current_task_to_thread(kmp_info_t *this_thr, 3602 kmp_team_t *team, int tid); 3603 extern void __kmp_pop_current_task_from_thread(kmp_info_t *this_thr); 3604 extern kmp_task_t *__kmp_task_alloc(ident_t *loc_ref, kmp_int32 gtid, 3605 kmp_tasking_flags_t *flags, 3606 size_t sizeof_kmp_task_t, 3607 size_t sizeof_shareds, 3608 kmp_routine_entry_t task_entry); 3609 extern void __kmp_init_implicit_task(ident_t *loc_ref, kmp_info_t *this_thr, 3610 kmp_team_t *team, int tid, 3611 int set_curr_task); 3612 extern void __kmp_finish_implicit_task(kmp_info_t *this_thr); 3613 extern void __kmp_free_implicit_task(kmp_info_t *this_thr); 3614 int __kmp_execute_tasks_32(kmp_info_t *thread, kmp_int32 gtid, 3615 kmp_flag_32 *flag, int final_spin, 3616 int *thread_finished, 3617 #if USE_ITT_BUILD 3618 void *itt_sync_obj, 3619 #endif /* USE_ITT_BUILD */ 3620 kmp_int32 is_constrained); 3621 int __kmp_execute_tasks_64(kmp_info_t *thread, kmp_int32 gtid, 3622 kmp_flag_64 *flag, int final_spin, 3623 int *thread_finished, 3624 #if USE_ITT_BUILD 3625 void *itt_sync_obj, 3626 #endif /* USE_ITT_BUILD */ 3627 kmp_int32 is_constrained); 3628 int __kmp_execute_tasks_oncore(kmp_info_t *thread, kmp_int32 gtid, 3629 kmp_flag_oncore *flag, int final_spin, 3630 int *thread_finished, 3631 #if USE_ITT_BUILD 3632 void *itt_sync_obj, 3633 #endif /* USE_ITT_BUILD */ 3634 kmp_int32 is_constrained); 3635 3636 extern void __kmp_free_task_team(kmp_info_t *thread, 3637 kmp_task_team_t *task_team); 3638 extern void __kmp_reap_task_teams(void); 3639 extern void __kmp_wait_to_unref_task_teams(void); 3640 extern void __kmp_task_team_setup(kmp_info_t *this_thr, kmp_team_t *team, 3641 int always); 3642 extern void __kmp_task_team_sync(kmp_info_t *this_thr, kmp_team_t *team); 3643 extern void __kmp_task_team_wait(kmp_info_t *this_thr, kmp_team_t *team 3644 #if USE_ITT_BUILD 3645 , 3646 void *itt_sync_obj 3647 #endif /* USE_ITT_BUILD */ 3648 , 3649 int wait = 1); 3650 extern void __kmp_tasking_barrier(kmp_team_t *team, kmp_info_t *thread, 3651 int gtid); 3652 3653 extern int __kmp_is_address_mapped(void *addr); 3654 extern kmp_uint64 __kmp_hardware_timestamp(void); 3655 3656 #if KMP_OS_UNIX 3657 extern int __kmp_read_from_file(char const *path, char const *format, ...); 3658 #endif 3659 3660 /* ------------------------------------------------------------------------ */ 3661 // 3662 // Assembly routines that have no compiler intrinsic replacement 3663 // 3664 3665 #if KMP_ARCH_X86 || KMP_ARCH_X86_64 3666 3667 extern void __kmp_query_cpuid(kmp_cpuinfo_t *p); 3668 3669 #define __kmp_load_mxcsr(p) _mm_setcsr(*(p)) 3670 static inline void __kmp_store_mxcsr(kmp_uint32 *p) { *p = _mm_getcsr(); } 3671 3672 extern void __kmp_load_x87_fpu_control_word(kmp_int16 *p); 3673 extern void __kmp_store_x87_fpu_control_word(kmp_int16 *p); 3674 extern void __kmp_clear_x87_fpu_status_word(); 3675 #define KMP_X86_MXCSR_MASK 0xffffffc0 /* ignore status flags (6 lsb) */ 3676 3677 #endif /* KMP_ARCH_X86 || KMP_ARCH_X86_64 */ 3678 3679 extern int __kmp_invoke_microtask(microtask_t pkfn, int gtid, int npr, int argc, 3680 void *argv[] 3681 #if OMPT_SUPPORT 3682 , 3683 void **exit_frame_ptr 3684 #endif 3685 ); 3686 3687 /* ------------------------------------------------------------------------ */ 3688 3689 KMP_EXPORT void __kmpc_begin(ident_t *, kmp_int32 flags); 3690 KMP_EXPORT void __kmpc_end(ident_t *); 3691 3692 KMP_EXPORT void __kmpc_threadprivate_register_vec(ident_t *, void *data, 3693 kmpc_ctor_vec ctor, 3694 kmpc_cctor_vec cctor, 3695 kmpc_dtor_vec dtor, 3696 size_t vector_length); 3697 KMP_EXPORT void __kmpc_threadprivate_register(ident_t *, void *data, 3698 kmpc_ctor ctor, kmpc_cctor cctor, 3699 kmpc_dtor dtor); 3700 KMP_EXPORT void *__kmpc_threadprivate(ident_t *, kmp_int32 global_tid, 3701 void *data, size_t size); 3702 3703 KMP_EXPORT kmp_int32 __kmpc_global_thread_num(ident_t *); 3704 KMP_EXPORT kmp_int32 __kmpc_global_num_threads(ident_t *); 3705 KMP_EXPORT kmp_int32 __kmpc_bound_thread_num(ident_t *); 3706 KMP_EXPORT kmp_int32 __kmpc_bound_num_threads(ident_t *); 3707 3708 KMP_EXPORT kmp_int32 __kmpc_ok_to_fork(ident_t *); 3709 KMP_EXPORT void __kmpc_fork_call(ident_t *, kmp_int32 nargs, 3710 kmpc_micro microtask, ...); 3711 3712 KMP_EXPORT void __kmpc_serialized_parallel(ident_t *, kmp_int32 global_tid); 3713 KMP_EXPORT void __kmpc_end_serialized_parallel(ident_t *, kmp_int32 global_tid); 3714 3715 KMP_EXPORT void __kmpc_flush(ident_t *); 3716 KMP_EXPORT void __kmpc_barrier(ident_t *, kmp_int32 global_tid); 3717 KMP_EXPORT kmp_int32 __kmpc_master(ident_t *, kmp_int32 global_tid); 3718 KMP_EXPORT void __kmpc_end_master(ident_t *, kmp_int32 global_tid); 3719 KMP_EXPORT void __kmpc_ordered(ident_t *, kmp_int32 global_tid); 3720 KMP_EXPORT void __kmpc_end_ordered(ident_t *, kmp_int32 global_tid); 3721 KMP_EXPORT void __kmpc_critical(ident_t *, kmp_int32 global_tid, 3722 kmp_critical_name *); 3723 KMP_EXPORT void __kmpc_end_critical(ident_t *, kmp_int32 global_tid, 3724 kmp_critical_name *); 3725 3726 #if OMP_45_ENABLED 3727 KMP_EXPORT void __kmpc_critical_with_hint(ident_t *, kmp_int32 global_tid, 3728 kmp_critical_name *, uint32_t hint); 3729 #endif 3730 3731 KMP_EXPORT kmp_int32 __kmpc_barrier_master(ident_t *, kmp_int32 global_tid); 3732 KMP_EXPORT void __kmpc_end_barrier_master(ident_t *, kmp_int32 global_tid); 3733 3734 KMP_EXPORT kmp_int32 __kmpc_barrier_master_nowait(ident_t *, 3735 kmp_int32 global_tid); 3736 3737 KMP_EXPORT kmp_int32 __kmpc_single(ident_t *, kmp_int32 global_tid); 3738 KMP_EXPORT void __kmpc_end_single(ident_t *, kmp_int32 global_tid); 3739 3740 KMP_EXPORT void KMPC_FOR_STATIC_INIT(ident_t *loc, kmp_int32 global_tid, 3741 kmp_int32 schedtype, kmp_int32 *plastiter, 3742 kmp_int *plower, kmp_int *pupper, 3743 kmp_int *pstride, kmp_int incr, 3744 kmp_int chunk); 3745 3746 KMP_EXPORT void __kmpc_for_static_fini(ident_t *loc, kmp_int32 global_tid); 3747 3748 KMP_EXPORT void __kmpc_copyprivate(ident_t *loc, kmp_int32 global_tid, 3749 size_t cpy_size, void *cpy_data, 3750 void (*cpy_func)(void *, void *), 3751 kmp_int32 didit); 3752 3753 extern void KMPC_SET_NUM_THREADS(int arg); 3754 extern void KMPC_SET_DYNAMIC(int flag); 3755 extern void KMPC_SET_NESTED(int flag); 3756 3757 /* Taskq interface routines */ 3758 KMP_EXPORT kmpc_thunk_t *__kmpc_taskq(ident_t *loc, kmp_int32 global_tid, 3759 kmpc_task_t taskq_task, 3760 size_t sizeof_thunk, 3761 size_t sizeof_shareds, kmp_int32 flags, 3762 kmpc_shared_vars_t **shareds); 3763 KMP_EXPORT void __kmpc_end_taskq(ident_t *loc, kmp_int32 global_tid, 3764 kmpc_thunk_t *thunk); 3765 KMP_EXPORT kmp_int32 __kmpc_task(ident_t *loc, kmp_int32 global_tid, 3766 kmpc_thunk_t *thunk); 3767 KMP_EXPORT void __kmpc_taskq_task(ident_t *loc, kmp_int32 global_tid, 3768 kmpc_thunk_t *thunk, kmp_int32 status); 3769 KMP_EXPORT void __kmpc_end_taskq_task(ident_t *loc, kmp_int32 global_tid, 3770 kmpc_thunk_t *thunk); 3771 KMP_EXPORT kmpc_thunk_t *__kmpc_task_buffer(ident_t *loc, kmp_int32 global_tid, 3772 kmpc_thunk_t *taskq_thunk, 3773 kmpc_task_t task); 3774 3775 /* OMP 3.0 tasking interface routines */ 3776 KMP_EXPORT kmp_int32 __kmpc_omp_task(ident_t *loc_ref, kmp_int32 gtid, 3777 kmp_task_t *new_task); 3778 KMP_EXPORT kmp_task_t *__kmpc_omp_task_alloc(ident_t *loc_ref, kmp_int32 gtid, 3779 kmp_int32 flags, 3780 size_t sizeof_kmp_task_t, 3781 size_t sizeof_shareds, 3782 kmp_routine_entry_t task_entry); 3783 KMP_EXPORT void __kmpc_omp_task_begin_if0(ident_t *loc_ref, kmp_int32 gtid, 3784 kmp_task_t *task); 3785 KMP_EXPORT void __kmpc_omp_task_complete_if0(ident_t *loc_ref, kmp_int32 gtid, 3786 kmp_task_t *task); 3787 KMP_EXPORT kmp_int32 __kmpc_omp_task_parts(ident_t *loc_ref, kmp_int32 gtid, 3788 kmp_task_t *new_task); 3789 KMP_EXPORT kmp_int32 __kmpc_omp_taskwait(ident_t *loc_ref, kmp_int32 gtid); 3790 3791 KMP_EXPORT kmp_int32 __kmpc_omp_taskyield(ident_t *loc_ref, kmp_int32 gtid, 3792 int end_part); 3793 3794 #if TASK_UNUSED 3795 void __kmpc_omp_task_begin(ident_t *loc_ref, kmp_int32 gtid, kmp_task_t *task); 3796 void __kmpc_omp_task_complete(ident_t *loc_ref, kmp_int32 gtid, 3797 kmp_task_t *task); 3798 #endif // TASK_UNUSED 3799 3800 /* ------------------------------------------------------------------------ */ 3801 3802 #if OMP_40_ENABLED 3803 3804 KMP_EXPORT void __kmpc_taskgroup(ident_t *loc, int gtid); 3805 KMP_EXPORT void __kmpc_end_taskgroup(ident_t *loc, int gtid); 3806 3807 KMP_EXPORT kmp_int32 __kmpc_omp_task_with_deps( 3808 ident_t *loc_ref, kmp_int32 gtid, kmp_task_t *new_task, kmp_int32 ndeps, 3809 kmp_depend_info_t *dep_list, kmp_int32 ndeps_noalias, 3810 kmp_depend_info_t *noalias_dep_list); 3811 KMP_EXPORT void __kmpc_omp_wait_deps(ident_t *loc_ref, kmp_int32 gtid, 3812 kmp_int32 ndeps, 3813 kmp_depend_info_t *dep_list, 3814 kmp_int32 ndeps_noalias, 3815 kmp_depend_info_t *noalias_dep_list); 3816 3817 extern kmp_int32 __kmp_omp_task(kmp_int32 gtid, kmp_task_t *new_task, 3818 bool serialize_immediate); 3819 3820 KMP_EXPORT kmp_int32 __kmpc_cancel(ident_t *loc_ref, kmp_int32 gtid, 3821 kmp_int32 cncl_kind); 3822 KMP_EXPORT kmp_int32 __kmpc_cancellationpoint(ident_t *loc_ref, kmp_int32 gtid, 3823 kmp_int32 cncl_kind); 3824 KMP_EXPORT kmp_int32 __kmpc_cancel_barrier(ident_t *loc_ref, kmp_int32 gtid); 3825 KMP_EXPORT int __kmp_get_cancellation_status(int cancel_kind); 3826 3827 #if OMP_45_ENABLED 3828 3829 KMP_EXPORT void __kmpc_proxy_task_completed(kmp_int32 gtid, kmp_task_t *ptask); 3830 KMP_EXPORT void __kmpc_proxy_task_completed_ooo(kmp_task_t *ptask); 3831 KMP_EXPORT void __kmpc_taskloop(ident_t *loc, kmp_int32 gtid, kmp_task_t *task, 3832 kmp_int32 if_val, kmp_uint64 *lb, 3833 kmp_uint64 *ub, kmp_int64 st, kmp_int32 nogroup, 3834 kmp_int32 sched, kmp_uint64 grainsize, 3835 void *task_dup); 3836 #endif 3837 #if OMP_50_ENABLED 3838 KMP_EXPORT void *__kmpc_task_reduction_init(int gtid, int num_data, void *data); 3839 KMP_EXPORT void *__kmpc_task_reduction_get_th_data(int gtid, void *tg, void *d); 3840 KMP_EXPORT kmp_int32 __kmpc_omp_reg_task_with_affinity( 3841 ident_t *loc_ref, kmp_int32 gtid, kmp_task_t *new_task, kmp_int32 naffins, 3842 kmp_task_affinity_info_t *affin_list); 3843 #endif 3844 3845 #endif 3846 3847 /* Lock interface routines (fast versions with gtid passed in) */ 3848 KMP_EXPORT void __kmpc_init_lock(ident_t *loc, kmp_int32 gtid, 3849 void **user_lock); 3850 KMP_EXPORT void __kmpc_init_nest_lock(ident_t *loc, kmp_int32 gtid, 3851 void **user_lock); 3852 KMP_EXPORT void __kmpc_destroy_lock(ident_t *loc, kmp_int32 gtid, 3853 void **user_lock); 3854 KMP_EXPORT void __kmpc_destroy_nest_lock(ident_t *loc, kmp_int32 gtid, 3855 void **user_lock); 3856 KMP_EXPORT void __kmpc_set_lock(ident_t *loc, kmp_int32 gtid, void **user_lock); 3857 KMP_EXPORT void __kmpc_set_nest_lock(ident_t *loc, kmp_int32 gtid, 3858 void **user_lock); 3859 KMP_EXPORT void __kmpc_unset_lock(ident_t *loc, kmp_int32 gtid, 3860 void **user_lock); 3861 KMP_EXPORT void __kmpc_unset_nest_lock(ident_t *loc, kmp_int32 gtid, 3862 void **user_lock); 3863 KMP_EXPORT int __kmpc_test_lock(ident_t *loc, kmp_int32 gtid, void **user_lock); 3864 KMP_EXPORT int __kmpc_test_nest_lock(ident_t *loc, kmp_int32 gtid, 3865 void **user_lock); 3866 3867 #if OMP_45_ENABLED 3868 KMP_EXPORT void __kmpc_init_lock_with_hint(ident_t *loc, kmp_int32 gtid, 3869 void **user_lock, uintptr_t hint); 3870 KMP_EXPORT void __kmpc_init_nest_lock_with_hint(ident_t *loc, kmp_int32 gtid, 3871 void **user_lock, 3872 uintptr_t hint); 3873 #endif 3874 3875 /* Interface to fast scalable reduce methods routines */ 3876 3877 KMP_EXPORT kmp_int32 __kmpc_reduce_nowait( 3878 ident_t *loc, kmp_int32 global_tid, kmp_int32 num_vars, size_t reduce_size, 3879 void *reduce_data, void (*reduce_func)(void *lhs_data, void *rhs_data), 3880 kmp_critical_name *lck); 3881 KMP_EXPORT void __kmpc_end_reduce_nowait(ident_t *loc, kmp_int32 global_tid, 3882 kmp_critical_name *lck); 3883 KMP_EXPORT kmp_int32 __kmpc_reduce( 3884 ident_t *loc, kmp_int32 global_tid, kmp_int32 num_vars, size_t reduce_size, 3885 void *reduce_data, void (*reduce_func)(void *lhs_data, void *rhs_data), 3886 kmp_critical_name *lck); 3887 KMP_EXPORT void __kmpc_end_reduce(ident_t *loc, kmp_int32 global_tid, 3888 kmp_critical_name *lck); 3889 3890 /* Internal fast reduction routines */ 3891 3892 extern PACKED_REDUCTION_METHOD_T __kmp_determine_reduction_method( 3893 ident_t *loc, kmp_int32 global_tid, kmp_int32 num_vars, size_t reduce_size, 3894 void *reduce_data, void (*reduce_func)(void *lhs_data, void *rhs_data), 3895 kmp_critical_name *lck); 3896 3897 // this function is for testing set/get/determine reduce method 3898 KMP_EXPORT kmp_int32 __kmp_get_reduce_method(void); 3899 3900 KMP_EXPORT kmp_uint64 __kmpc_get_taskid(); 3901 KMP_EXPORT kmp_uint64 __kmpc_get_parent_taskid(); 3902 3903 // C++ port 3904 // missing 'extern "C"' declarations 3905 3906 KMP_EXPORT kmp_int32 __kmpc_in_parallel(ident_t *loc); 3907 KMP_EXPORT void __kmpc_pop_num_threads(ident_t *loc, kmp_int32 global_tid); 3908 KMP_EXPORT void __kmpc_push_num_threads(ident_t *loc, kmp_int32 global_tid, 3909 kmp_int32 num_threads); 3910 3911 #if OMP_40_ENABLED 3912 KMP_EXPORT void __kmpc_push_proc_bind(ident_t *loc, kmp_int32 global_tid, 3913 int proc_bind); 3914 KMP_EXPORT void __kmpc_push_num_teams(ident_t *loc, kmp_int32 global_tid, 3915 kmp_int32 num_teams, 3916 kmp_int32 num_threads); 3917 KMP_EXPORT void __kmpc_fork_teams(ident_t *loc, kmp_int32 argc, 3918 kmpc_micro microtask, ...); 3919 #endif 3920 #if OMP_45_ENABLED 3921 struct kmp_dim { // loop bounds info casted to kmp_int64 3922 kmp_int64 lo; // lower 3923 kmp_int64 up; // upper 3924 kmp_int64 st; // stride 3925 }; 3926 KMP_EXPORT void __kmpc_doacross_init(ident_t *loc, kmp_int32 gtid, 3927 kmp_int32 num_dims, 3928 const struct kmp_dim *dims); 3929 KMP_EXPORT void __kmpc_doacross_wait(ident_t *loc, kmp_int32 gtid, 3930 const kmp_int64 *vec); 3931 KMP_EXPORT void __kmpc_doacross_post(ident_t *loc, kmp_int32 gtid, 3932 const kmp_int64 *vec); 3933 KMP_EXPORT void __kmpc_doacross_fini(ident_t *loc, kmp_int32 gtid); 3934 #endif 3935 3936 KMP_EXPORT void *__kmpc_threadprivate_cached(ident_t *loc, kmp_int32 global_tid, 3937 void *data, size_t size, 3938 void ***cache); 3939 3940 // Symbols for MS mutual detection. 3941 extern int _You_must_link_with_exactly_one_OpenMP_library; 3942 extern int _You_must_link_with_Intel_OpenMP_library; 3943 #if KMP_OS_WINDOWS && (KMP_VERSION_MAJOR > 4) 3944 extern int _You_must_link_with_Microsoft_OpenMP_library; 3945 #endif 3946 3947 // The routines below are not exported. 3948 // Consider making them 'static' in corresponding source files. 3949 void kmp_threadprivate_insert_private_data(int gtid, void *pc_addr, 3950 void *data_addr, size_t pc_size); 3951 struct private_common *kmp_threadprivate_insert(int gtid, void *pc_addr, 3952 void *data_addr, 3953 size_t pc_size); 3954 void __kmp_threadprivate_resize_cache(int newCapacity); 3955 void __kmp_cleanup_threadprivate_caches(); 3956 3957 // ompc_, kmpc_ entries moved from omp.h. 3958 #if KMP_OS_WINDOWS 3959 #define KMPC_CONVENTION __cdecl 3960 #else 3961 #define KMPC_CONVENTION 3962 #endif 3963 3964 #ifndef __OMP_H 3965 typedef enum omp_sched_t { 3966 omp_sched_static = 1, 3967 omp_sched_dynamic = 2, 3968 omp_sched_guided = 3, 3969 omp_sched_auto = 4 3970 } omp_sched_t; 3971 typedef void *kmp_affinity_mask_t; 3972 #endif 3973 3974 KMP_EXPORT void KMPC_CONVENTION ompc_set_max_active_levels(int); 3975 KMP_EXPORT void KMPC_CONVENTION ompc_set_schedule(omp_sched_t, int); 3976 KMP_EXPORT int KMPC_CONVENTION ompc_get_ancestor_thread_num(int); 3977 KMP_EXPORT int KMPC_CONVENTION ompc_get_team_size(int); 3978 KMP_EXPORT int KMPC_CONVENTION 3979 kmpc_set_affinity_mask_proc(int, kmp_affinity_mask_t *); 3980 KMP_EXPORT int KMPC_CONVENTION 3981 kmpc_unset_affinity_mask_proc(int, kmp_affinity_mask_t *); 3982 KMP_EXPORT int KMPC_CONVENTION 3983 kmpc_get_affinity_mask_proc(int, kmp_affinity_mask_t *); 3984 3985 KMP_EXPORT void KMPC_CONVENTION kmpc_set_stacksize(int); 3986 KMP_EXPORT void KMPC_CONVENTION kmpc_set_stacksize_s(size_t); 3987 KMP_EXPORT void KMPC_CONVENTION kmpc_set_library(int); 3988 KMP_EXPORT void KMPC_CONVENTION kmpc_set_defaults(char const *); 3989 KMP_EXPORT void KMPC_CONVENTION kmpc_set_disp_num_buffers(int); 3990 3991 #if OMP_50_ENABLED 3992 enum kmp_target_offload_kind { 3993 tgt_disabled = 0, 3994 tgt_default = 1, 3995 tgt_mandatory = 2 3996 }; 3997 typedef enum kmp_target_offload_kind kmp_target_offload_kind_t; 3998 // Set via OMP_TARGET_OFFLOAD if specified, defaults to tgt_default otherwise 3999 extern kmp_target_offload_kind_t __kmp_target_offload; 4000 extern int __kmpc_get_target_offload(); 4001 #endif 4002 4003 #if OMP_40_ENABLED 4004 // Constants used in libomptarget 4005 #define KMP_DEVICE_DEFAULT -1 // This is libomptarget's default device. 4006 #define KMP_HOST_DEVICE -10 // This is what it is in libomptarget, go figure. 4007 #define KMP_DEVICE_ALL -11 // This is libomptarget's "all devices". 4008 #endif // OMP_40_ENABLED 4009 4010 #ifdef __cplusplus 4011 } 4012 #endif 4013 4014 #endif /* KMP_H */ 4015