3 * kmp.h -- KPTS runtime header file.
6 //===----------------------------------------------------------------------===//
8 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
9 // See https://llvm.org/LICENSE.txt for license information.
10 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
12 //===----------------------------------------------------------------------===//
17 #include "kmp_config.h"
19 /* #define BUILD_PARALLEL_ORDERED 1 */
21 /* This fix replaces gettimeofday with clock_gettime for better scalability on
22 the Altix. Requires user code to be linked with -lrt. */
23 //#define FIX_SGI_CLOCK
25 /* Defines for OpenMP 3.0 tasking and auto scheduling */
27 #ifndef KMP_STATIC_STEAL_ENABLED
28 #define KMP_STATIC_STEAL_ENABLED 1
31 #define TASK_CURRENT_NOT_QUEUED 0
32 #define TASK_CURRENT_QUEUED 1
34 #ifdef BUILD_TIED_TASK_STACK
35 #define TASK_STACK_EMPTY 0 // entries when the stack is empty
36 #define TASK_STACK_BLOCK_BITS 5 // Used in TASK_STACK_SIZE and TASK_STACK_MASK
37 // Number of entries in each task stack array
38 #define TASK_STACK_BLOCK_SIZE (1 << TASK_STACK_BLOCK_BITS)
39 // Mask for determining index into stack block
40 #define TASK_STACK_INDEX_MASK (TASK_STACK_BLOCK_SIZE - 1)
41 #endif // BUILD_TIED_TASK_STACK
43 #define TASK_NOT_PUSHED 1
44 #define TASK_SUCCESSFULLY_PUSHED 0
47 #define TASK_EXPLICIT 1
48 #define TASK_IMPLICIT 0
51 #define TASK_DETACHABLE 1
52 #define TASK_UNDETACHABLE 0
54 #define KMP_CANCEL_THREADS
55 #define KMP_THREAD_ATTR
57 // Android does not have pthread_cancel. Undefine KMP_CANCEL_THREADS if being
59 #if defined(__ANDROID__)
60 #undef KMP_CANCEL_THREADS
69 /* include <ctype.h> don't use; problems with /MD on Windows* OS NT due to bad
70 Microsoft library. Some macros provided below to replace these functions */
72 #include <sys/types.h>
81 #include "kmp_safe_c_api.h"
87 #if KMP_USE_HIER_SCHED
88 // Only include hierarchical scheduling if affinity is supported
89 #undef KMP_USE_HIER_SCHED
90 #define KMP_USE_HIER_SCHED KMP_AFFINITY_SUPPORTED
93 #if KMP_USE_HWLOC && KMP_AFFINITY_SUPPORTED
95 #ifndef HWLOC_OBJ_NUMANODE
96 #define HWLOC_OBJ_NUMANODE HWLOC_OBJ_NODE
98 #ifndef HWLOC_OBJ_PACKAGE
99 #define HWLOC_OBJ_PACKAGE HWLOC_OBJ_SOCKET
101 #if HWLOC_API_VERSION >= 0x00020000
102 // hwloc 2.0 changed type of depth of object from unsigned to int
103 typedef int kmp_hwloc_depth_t;
105 typedef unsigned int kmp_hwloc_depth_t;
109 #if KMP_ARCH_X86 || KMP_ARCH_X86_64
110 #include <xmmintrin.h>
113 #include "kmp_debug.h"
114 #include "kmp_lock.h"
115 #include "kmp_version.h"
117 #include "kmp_debugger.h"
119 #include "kmp_i18n.h"
121 #define KMP_HANDLE_SIGNALS (KMP_OS_UNIX || KMP_OS_WINDOWS)
123 #include "kmp_wrapper_malloc.h"
126 #if !defined NSIG && defined _NSIG
132 #pragma weak clock_gettime
136 #include "ompt-internal.h"
139 // Affinity format function
142 // 0 - no fast memory allocation, alignment: 8-byte on x86, 16-byte on x64.
143 // 3 - fast allocation using sync, non-sync free lists of any size, non-self
144 // free lists of limited size.
145 #ifndef USE_FAST_MEMORY
146 #define USE_FAST_MEMORY 3
149 #ifndef KMP_NESTED_HOT_TEAMS
150 #define KMP_NESTED_HOT_TEAMS 0
151 #define USE_NESTED_HOT_ARG(x)
153 #if KMP_NESTED_HOT_TEAMS
154 #define USE_NESTED_HOT_ARG(x) , x
156 #define USE_NESTED_HOT_ARG(x)
160 // Assume using BGET compare_exchange instruction instead of lock by default.
161 #ifndef USE_CMP_XCHG_FOR_BGET
162 #define USE_CMP_XCHG_FOR_BGET 1
165 // Test to see if queuing lock is better than bootstrap lock for bget
166 // #ifndef USE_QUEUING_LOCK_FOR_BGET
167 // #define USE_QUEUING_LOCK_FOR_BGET
170 #define KMP_NSEC_PER_SEC 1000000000L
171 #define KMP_USEC_PER_SEC 1000000L
179 Values for bit flags used in the ident_t to describe the fields.
182 /*! Use trampoline for internal microtasks */
183 KMP_IDENT_IMB = 0x01,
184 /*! Use c-style ident structure */
185 KMP_IDENT_KMPC = 0x02,
186 /* 0x04 is no longer used */
187 /*! Entry point generated by auto-parallelization */
188 KMP_IDENT_AUTOPAR = 0x08,
189 /*! Compiler generates atomic reduction option for kmpc_reduce* */
190 KMP_IDENT_ATOMIC_REDUCE = 0x10,
191 /*! To mark a 'barrier' directive in user code */
192 KMP_IDENT_BARRIER_EXPL = 0x20,
193 /*! To Mark implicit barriers. */
194 KMP_IDENT_BARRIER_IMPL = 0x0040,
195 KMP_IDENT_BARRIER_IMPL_MASK = 0x01C0,
196 KMP_IDENT_BARRIER_IMPL_FOR = 0x0040,
197 KMP_IDENT_BARRIER_IMPL_SECTIONS = 0x00C0,
199 KMP_IDENT_BARRIER_IMPL_SINGLE = 0x0140,
200 KMP_IDENT_BARRIER_IMPL_WORKSHARE = 0x01C0,
202 /*! To mark a static loop in OMPT callbacks */
203 KMP_IDENT_WORK_LOOP = 0x200,
204 /*! To mark a sections directive in OMPT callbacks */
205 KMP_IDENT_WORK_SECTIONS = 0x400,
206 /*! To mark a distirbute construct in OMPT callbacks */
207 KMP_IDENT_WORK_DISTRIBUTE = 0x800,
208 /*! Atomic hint; bottom four bits as omp_sync_hint_t. Top four reserved and
209 not currently used. If one day we need more bits, then we can use
210 an invalid combination of hints to mean that another, larger field
211 should be used in a different flag. */
212 KMP_IDENT_ATOMIC_HINT_MASK = 0xFF0000,
213 KMP_IDENT_ATOMIC_HINT_UNCONTENDED = 0x010000,
214 KMP_IDENT_ATOMIC_HINT_CONTENDED = 0x020000,
215 KMP_IDENT_ATOMIC_HINT_NONSPECULATIVE = 0x040000,
216 KMP_IDENT_ATOMIC_HINT_SPECULATIVE = 0x080000,
220 * The ident structure that describes a source location.
222 typedef struct ident {
223 kmp_int32 reserved_1; /**< might be used in Fortran; see above */
224 kmp_int32 flags; /**< also f.flags; KMP_IDENT_xxx flags; KMP_IDENT_KMPC
225 identifies this union member */
226 kmp_int32 reserved_2; /**< not really used in Fortran any more; see above */
228 /* but currently used for storing region-specific ITT */
229 /* contextual information. */
230 #endif /* USE_ITT_BUILD */
231 kmp_int32 reserved_3; /**< source[4] in Fortran, do not use for C++ */
232 char const *psource; /**< String describing the source location.
233 The string is composed of semi-colon separated fields
234 which describe the source file, the function and a pair
235 of line numbers that delimit the construct. */
241 // Some forward declarations.
242 typedef union kmp_team kmp_team_t;
243 typedef struct kmp_taskdata kmp_taskdata_t;
244 typedef union kmp_task_team kmp_task_team_t;
245 typedef union kmp_team kmp_team_p;
246 typedef union kmp_info kmp_info_p;
247 typedef union kmp_root kmp_root_p;
253 /* ------------------------------------------------------------------------ */
255 /* Pack two 32-bit signed integers into a 64-bit signed integer */
256 /* ToDo: Fix word ordering for big-endian machines. */
257 #define KMP_PACK_64(HIGH_32, LOW_32) \
258 ((kmp_int64)((((kmp_uint64)(HIGH_32)) << 32) | (kmp_uint64)(LOW_32)))
260 // Generic string manipulation macros. Assume that _x is of type char *
261 #define SKIP_WS(_x) \
263 while (*(_x) == ' ' || *(_x) == '\t') \
266 #define SKIP_DIGITS(_x) \
268 while (*(_x) >= '0' && *(_x) <= '9') \
271 #define SKIP_TOKEN(_x) \
273 while ((*(_x) >= '0' && *(_x) <= '9') || (*(_x) >= 'a' && *(_x) <= 'z') || \
274 (*(_x) >= 'A' && *(_x) <= 'Z') || *(_x) == '_') \
277 #define SKIP_TO(_x, _c) \
279 while (*(_x) != '\0' && *(_x) != (_c)) \
283 /* ------------------------------------------------------------------------ */
285 #define KMP_MAX(x, y) ((x) > (y) ? (x) : (y))
286 #define KMP_MIN(x, y) ((x) < (y) ? (x) : (y))
288 /* ------------------------------------------------------------------------ */
289 /* Enumeration types */
291 enum kmp_state_timer {
301 #ifdef USE_LOAD_BALANCE
302 dynamic_load_balance,
303 #endif /* USE_LOAD_BALANCE */
305 dynamic_thread_limit,
309 /* external schedule constants, duplicate enum omp_sched in omp.h in order to
310 * not include it here */
311 #ifndef KMP_SCHED_TYPE_DEFINED
312 #define KMP_SCHED_TYPE_DEFINED
313 typedef enum kmp_sched {
314 kmp_sched_lower = 0, // lower and upper bounds are for routine parameter check
315 // Note: need to adjust __kmp_sch_map global array in case enum is changed
316 kmp_sched_static = 1, // mapped to kmp_sch_static_chunked (33)
317 kmp_sched_dynamic = 2, // mapped to kmp_sch_dynamic_chunked (35)
318 kmp_sched_guided = 3, // mapped to kmp_sch_guided_chunked (36)
319 kmp_sched_auto = 4, // mapped to kmp_sch_auto (38)
320 kmp_sched_upper_std = 5, // upper bound for standard schedules
321 kmp_sched_lower_ext = 100, // lower bound of Intel extension schedules
322 kmp_sched_trapezoidal = 101, // mapped to kmp_sch_trapezoidal (39)
323 #if KMP_STATIC_STEAL_ENABLED
324 kmp_sched_static_steal = 102, // mapped to kmp_sch_static_steal (44)
327 kmp_sched_default = kmp_sched_static, // default scheduling
328 kmp_sched_monotonic = 0x80000000
333 @ingroup WORK_SHARING
334 * Describes the loop schedule to be used for a parallel for loop.
336 enum sched_type : kmp_int32 {
337 kmp_sch_lower = 32, /**< lower bound for unordered values */
338 kmp_sch_static_chunked = 33,
339 kmp_sch_static = 34, /**< static unspecialized */
340 kmp_sch_dynamic_chunked = 35,
341 kmp_sch_guided_chunked = 36, /**< guided unspecialized */
342 kmp_sch_runtime = 37,
343 kmp_sch_auto = 38, /**< auto */
344 kmp_sch_trapezoidal = 39,
346 /* accessible only through KMP_SCHEDULE environment variable */
347 kmp_sch_static_greedy = 40,
348 kmp_sch_static_balanced = 41,
349 /* accessible only through KMP_SCHEDULE environment variable */
350 kmp_sch_guided_iterative_chunked = 42,
351 kmp_sch_guided_analytical_chunked = 43,
352 /* accessible only through KMP_SCHEDULE environment variable */
353 kmp_sch_static_steal = 44,
355 /* static with chunk adjustment (e.g., simd) */
356 kmp_sch_static_balanced_chunked = 45,
357 kmp_sch_guided_simd = 46, /**< guided with chunk adjustment */
358 kmp_sch_runtime_simd = 47, /**< runtime with chunk adjustment */
360 /* accessible only through KMP_SCHEDULE environment variable */
361 kmp_sch_upper, /**< upper bound for unordered values */
363 kmp_ord_lower = 64, /**< lower bound for ordered values, must be power of 2 */
364 kmp_ord_static_chunked = 65,
365 kmp_ord_static = 66, /**< ordered static unspecialized */
366 kmp_ord_dynamic_chunked = 67,
367 kmp_ord_guided_chunked = 68,
368 kmp_ord_runtime = 69,
369 kmp_ord_auto = 70, /**< ordered auto */
370 kmp_ord_trapezoidal = 71,
371 kmp_ord_upper, /**< upper bound for ordered values */
373 /* Schedules for Distribute construct */
374 kmp_distribute_static_chunked = 91, /**< distribute static chunked */
375 kmp_distribute_static = 92, /**< distribute static unspecialized */
377 /* For the "nomerge" versions, kmp_dispatch_next*() will always return a
378 single iteration/chunk, even if the loop is serialized. For the schedule
379 types listed above, the entire iteration vector is returned if the loop is
380 serialized. This doesn't work for gcc/gcomp sections. */
381 kmp_nm_lower = 160, /**< lower bound for nomerge values */
383 kmp_nm_static_chunked =
384 (kmp_sch_static_chunked - kmp_sch_lower + kmp_nm_lower),
385 kmp_nm_static = 162, /**< static unspecialized */
386 kmp_nm_dynamic_chunked = 163,
387 kmp_nm_guided_chunked = 164, /**< guided unspecialized */
388 kmp_nm_runtime = 165,
389 kmp_nm_auto = 166, /**< auto */
390 kmp_nm_trapezoidal = 167,
392 /* accessible only through KMP_SCHEDULE environment variable */
393 kmp_nm_static_greedy = 168,
394 kmp_nm_static_balanced = 169,
395 /* accessible only through KMP_SCHEDULE environment variable */
396 kmp_nm_guided_iterative_chunked = 170,
397 kmp_nm_guided_analytical_chunked = 171,
398 kmp_nm_static_steal =
399 172, /* accessible only through OMP_SCHEDULE environment variable */
401 kmp_nm_ord_static_chunked = 193,
402 kmp_nm_ord_static = 194, /**< ordered static unspecialized */
403 kmp_nm_ord_dynamic_chunked = 195,
404 kmp_nm_ord_guided_chunked = 196,
405 kmp_nm_ord_runtime = 197,
406 kmp_nm_ord_auto = 198, /**< auto */
407 kmp_nm_ord_trapezoidal = 199,
408 kmp_nm_upper, /**< upper bound for nomerge values */
410 /* Support for OpenMP 4.5 monotonic and nonmonotonic schedule modifiers. Since
411 we need to distinguish the three possible cases (no modifier, monotonic
412 modifier, nonmonotonic modifier), we need separate bits for each modifier.
413 The absence of monotonic does not imply nonmonotonic, especially since 4.5
414 says that the behaviour of the "no modifier" case is implementation defined
415 in 4.5, but will become "nonmonotonic" in 5.0.
417 Since we're passing a full 32 bit value, we can use a couple of high bits
418 for these flags; out of paranoia we avoid the sign bit.
420 These modifiers can be or-ed into non-static schedules by the compiler to
421 pass the additional information. They will be stripped early in the
422 processing in __kmp_dispatch_init when setting up schedules, so most of the
423 code won't ever see schedules with these bits set. */
424 kmp_sch_modifier_monotonic =
425 (1 << 29), /**< Set if the monotonic schedule modifier was present */
426 kmp_sch_modifier_nonmonotonic =
427 (1 << 30), /**< Set if the nonmonotonic schedule modifier was present */
429 #define SCHEDULE_WITHOUT_MODIFIERS(s) \
431 (s) & ~(kmp_sch_modifier_nonmonotonic | kmp_sch_modifier_monotonic))
432 #define SCHEDULE_HAS_MONOTONIC(s) (((s)&kmp_sch_modifier_monotonic) != 0)
433 #define SCHEDULE_HAS_NONMONOTONIC(s) (((s)&kmp_sch_modifier_nonmonotonic) != 0)
434 #define SCHEDULE_HAS_NO_MODIFIERS(s) \
435 (((s) & (kmp_sch_modifier_nonmonotonic | kmp_sch_modifier_monotonic)) == 0)
436 #define SCHEDULE_GET_MODIFIERS(s) \
437 ((enum sched_type)( \
438 (s) & (kmp_sch_modifier_nonmonotonic | kmp_sch_modifier_monotonic)))
439 #define SCHEDULE_SET_MODIFIERS(s, m) \
440 (s = (enum sched_type)((kmp_int32)s | (kmp_int32)m))
441 #define SCHEDULE_NONMONOTONIC 0
442 #define SCHEDULE_MONOTONIC 1
444 kmp_sch_default = kmp_sch_static /**< default scheduling algorithm */
447 // Apply modifiers on internal kind to standard kind
449 __kmp_sched_apply_mods_stdkind(kmp_sched_t *kind,
450 enum sched_type internal_kind) {
451 if (SCHEDULE_HAS_MONOTONIC(internal_kind)) {
452 *kind = (kmp_sched_t)((int)*kind | (int)kmp_sched_monotonic);
456 // Apply modifiers on standard kind to internal kind
458 __kmp_sched_apply_mods_intkind(kmp_sched_t kind,
459 enum sched_type *internal_kind) {
460 if ((int)kind & (int)kmp_sched_monotonic) {
461 *internal_kind = (enum sched_type)((int)*internal_kind |
462 (int)kmp_sch_modifier_monotonic);
466 // Get standard schedule without modifiers
467 static inline kmp_sched_t __kmp_sched_without_mods(kmp_sched_t kind) {
468 return (kmp_sched_t)((int)kind & ~((int)kmp_sched_monotonic));
471 /* Type to keep runtime schedule set via OMP_SCHEDULE or omp_set_schedule() */
472 typedef union kmp_r_sched {
474 enum sched_type r_sched_type;
480 extern enum sched_type __kmp_sch_map[]; // map OMP 3.0 schedule types with our
481 // internal schedule types
491 enum clock_function_type {
492 clock_function_gettimeofday,
493 clock_function_clock_gettime
495 #endif /* KMP_OS_LINUX */
497 #if KMP_MIC_SUPPORTED
498 enum mic_type { non_mic, mic1, mic2, mic3, dummy };
501 /* -- fast reduction stuff ------------------------------------------------ */
503 #undef KMP_FAST_REDUCTION_BARRIER
504 #define KMP_FAST_REDUCTION_BARRIER 1
506 #undef KMP_FAST_REDUCTION_CORE_DUO
507 #if KMP_ARCH_X86 || KMP_ARCH_X86_64
508 #define KMP_FAST_REDUCTION_CORE_DUO 1
511 enum _reduction_method {
512 reduction_method_not_defined = 0,
513 critical_reduce_block = (1 << 8),
514 atomic_reduce_block = (2 << 8),
515 tree_reduce_block = (3 << 8),
516 empty_reduce_block = (4 << 8)
519 // Description of the packed_reduction_method variable:
520 // The packed_reduction_method variable consists of two enum types variables
521 // that are packed together into 0-th byte and 1-st byte:
522 // 0: (packed_reduction_method & 0x000000FF) is a 'enum barrier_type' value of
523 // barrier that will be used in fast reduction: bs_plain_barrier or
524 // bs_reduction_barrier
525 // 1: (packed_reduction_method & 0x0000FF00) is a reduction method that will
526 // be used in fast reduction;
527 // Reduction method is of 'enum _reduction_method' type and it's defined the way
528 // so that the bits of 0-th byte are empty, so no need to execute a shift
529 // instruction while packing/unpacking
531 #if KMP_FAST_REDUCTION_BARRIER
532 #define PACK_REDUCTION_METHOD_AND_BARRIER(reduction_method, barrier_type) \
533 ((reduction_method) | (barrier_type))
535 #define UNPACK_REDUCTION_METHOD(packed_reduction_method) \
536 ((enum _reduction_method)((packed_reduction_method) & (0x0000FF00)))
538 #define UNPACK_REDUCTION_BARRIER(packed_reduction_method) \
539 ((enum barrier_type)((packed_reduction_method) & (0x000000FF)))
541 #define PACK_REDUCTION_METHOD_AND_BARRIER(reduction_method, barrier_type) \
544 #define UNPACK_REDUCTION_METHOD(packed_reduction_method) \
545 (packed_reduction_method)
547 #define UNPACK_REDUCTION_BARRIER(packed_reduction_method) (bs_plain_barrier)
550 #define TEST_REDUCTION_METHOD(packed_reduction_method, which_reduction_block) \
551 ((UNPACK_REDUCTION_METHOD(packed_reduction_method)) == \
552 (which_reduction_block))
554 #if KMP_FAST_REDUCTION_BARRIER
555 #define TREE_REDUCE_BLOCK_WITH_REDUCTION_BARRIER \
556 (PACK_REDUCTION_METHOD_AND_BARRIER(tree_reduce_block, bs_reduction_barrier))
558 #define TREE_REDUCE_BLOCK_WITH_PLAIN_BARRIER \
559 (PACK_REDUCTION_METHOD_AND_BARRIER(tree_reduce_block, bs_plain_barrier))
562 typedef int PACKED_REDUCTION_METHOD_T;
564 /* -- end of fast reduction stuff ----------------------------------------- */
569 #pragma warning(push)
570 #pragma warning(disable : 271 310)
583 /* Only Linux* OS and Windows* OS support thread affinity. */
584 #if KMP_AFFINITY_SUPPORTED
586 // GROUP_AFFINITY is already defined for _MSC_VER>=1600 (VS2010 and later).
588 #if _MSC_VER < 1600 && KMP_MSVC_COMPAT
589 typedef struct GROUP_AFFINITY {
594 #endif /* _MSC_VER < 1600 */
595 #if KMP_GROUP_AFFINITY
596 extern int __kmp_num_proc_groups;
598 static const int __kmp_num_proc_groups = 1;
599 #endif /* KMP_GROUP_AFFINITY */
600 typedef DWORD (*kmp_GetActiveProcessorCount_t)(WORD);
601 extern kmp_GetActiveProcessorCount_t __kmp_GetActiveProcessorCount;
603 typedef WORD (*kmp_GetActiveProcessorGroupCount_t)(void);
604 extern kmp_GetActiveProcessorGroupCount_t __kmp_GetActiveProcessorGroupCount;
606 typedef BOOL (*kmp_GetThreadGroupAffinity_t)(HANDLE, GROUP_AFFINITY *);
607 extern kmp_GetThreadGroupAffinity_t __kmp_GetThreadGroupAffinity;
609 typedef BOOL (*kmp_SetThreadGroupAffinity_t)(HANDLE, const GROUP_AFFINITY *,
611 extern kmp_SetThreadGroupAffinity_t __kmp_SetThreadGroupAffinity;
612 #endif /* KMP_OS_WINDOWS */
615 extern hwloc_topology_t __kmp_hwloc_topology;
616 extern int __kmp_hwloc_error;
617 extern int __kmp_numa_detected;
618 extern int __kmp_tile_depth;
621 extern size_t __kmp_affin_mask_size;
622 #define KMP_AFFINITY_CAPABLE() (__kmp_affin_mask_size > 0)
623 #define KMP_AFFINITY_DISABLE() (__kmp_affin_mask_size = 0)
624 #define KMP_AFFINITY_ENABLE(mask_size) (__kmp_affin_mask_size = mask_size)
625 #define KMP_CPU_SET_ITERATE(i, mask) \
626 for (i = (mask)->begin(); (int)i != (mask)->end(); i = (mask)->next(i))
627 #define KMP_CPU_SET(i, mask) (mask)->set(i)
628 #define KMP_CPU_ISSET(i, mask) (mask)->is_set(i)
629 #define KMP_CPU_CLR(i, mask) (mask)->clear(i)
630 #define KMP_CPU_ZERO(mask) (mask)->zero()
631 #define KMP_CPU_COPY(dest, src) (dest)->copy(src)
632 #define KMP_CPU_AND(dest, src) (dest)->bitwise_and(src)
633 #define KMP_CPU_COMPLEMENT(max_bit_number, mask) (mask)->bitwise_not()
634 #define KMP_CPU_UNION(dest, src) (dest)->bitwise_or(src)
635 #define KMP_CPU_ALLOC(ptr) (ptr = __kmp_affinity_dispatch->allocate_mask())
636 #define KMP_CPU_FREE(ptr) __kmp_affinity_dispatch->deallocate_mask(ptr)
637 #define KMP_CPU_ALLOC_ON_STACK(ptr) KMP_CPU_ALLOC(ptr)
638 #define KMP_CPU_FREE_FROM_STACK(ptr) KMP_CPU_FREE(ptr)
639 #define KMP_CPU_INTERNAL_ALLOC(ptr) KMP_CPU_ALLOC(ptr)
640 #define KMP_CPU_INTERNAL_FREE(ptr) KMP_CPU_FREE(ptr)
641 #define KMP_CPU_INDEX(arr, i) __kmp_affinity_dispatch->index_mask_array(arr, i)
642 #define KMP_CPU_ALLOC_ARRAY(arr, n) \
643 (arr = __kmp_affinity_dispatch->allocate_mask_array(n))
644 #define KMP_CPU_FREE_ARRAY(arr, n) \
645 __kmp_affinity_dispatch->deallocate_mask_array(arr)
646 #define KMP_CPU_INTERNAL_ALLOC_ARRAY(arr, n) KMP_CPU_ALLOC_ARRAY(arr, n)
647 #define KMP_CPU_INTERNAL_FREE_ARRAY(arr, n) KMP_CPU_FREE_ARRAY(arr, n)
648 #define __kmp_get_system_affinity(mask, abort_bool) \
649 (mask)->get_system_affinity(abort_bool)
650 #define __kmp_set_system_affinity(mask, abort_bool) \
651 (mask)->set_system_affinity(abort_bool)
652 #define __kmp_get_proc_group(mask) (mask)->get_proc_group()
658 void *operator new(size_t n);
659 void operator delete(void *p);
660 void *operator new[](size_t n);
661 void operator delete[](void *p);
664 virtual void set(int i) {}
666 virtual bool is_set(int i) const { return false; }
668 virtual void clear(int i) {}
669 // Zero out entire mask
670 virtual void zero() {}
671 // Copy src into this mask
672 virtual void copy(const Mask *src) {}
674 virtual void bitwise_and(const Mask *rhs) {}
676 virtual void bitwise_or(const Mask *rhs) {}
678 virtual void bitwise_not() {}
679 // API for iterating over an affinity mask
680 // for (int i = mask->begin(); i != mask->end(); i = mask->next(i))
681 virtual int begin() const { return 0; }
682 virtual int end() const { return 0; }
683 virtual int next(int previous) const { return 0; }
684 // Set the system's affinity to this affinity mask's value
685 virtual int set_system_affinity(bool abort_on_error) const { return -1; }
686 // Set this affinity mask to the current system affinity
687 virtual int get_system_affinity(bool abort_on_error) { return -1; }
688 // Only 1 DWORD in the mask should have any procs set.
689 // Return the appropriate index, or -1 for an invalid mask.
690 virtual int get_proc_group() const { return -1; }
692 void *operator new(size_t n);
693 void operator delete(void *p);
694 // Need virtual destructor
695 virtual ~KMPAffinity() = default;
696 // Determine if affinity is capable
697 virtual void determine_capable(const char *env_var) {}
698 // Bind the current thread to os proc
699 virtual void bind_thread(int proc) {}
700 // Factory functions to allocate/deallocate a mask
701 virtual Mask *allocate_mask() { return nullptr; }
702 virtual void deallocate_mask(Mask *m) {}
703 virtual Mask *allocate_mask_array(int num) { return nullptr; }
704 virtual void deallocate_mask_array(Mask *m) {}
705 virtual Mask *index_mask_array(Mask *m, int index) { return nullptr; }
706 static void pick_api();
707 static void destroy_api();
715 virtual api_type get_api_type() const {
721 static bool picked_api;
724 typedef KMPAffinity::Mask kmp_affin_mask_t;
725 extern KMPAffinity *__kmp_affinity_dispatch;
727 // Declare local char buffers with this size for printing debug and info
728 // messages, using __kmp_affinity_print_mask().
729 #define KMP_AFFIN_MASK_PRINT_LEN 1024
739 affinity_disabled, // not used outsize the env var parser
744 affinity_gran_fine = 0,
745 affinity_gran_thread,
749 affinity_gran_package,
751 #if KMP_GROUP_AFFINITY
752 // The "group" granularity isn't necesssarily coarser than all of the
753 // other levels, but we put it last in the enum.
755 #endif /* KMP_GROUP_AFFINITY */
756 affinity_gran_default
759 enum affinity_top_method {
760 affinity_top_method_all = 0, // try all (supported) methods, in order
761 #if KMP_ARCH_X86 || KMP_ARCH_X86_64
762 affinity_top_method_apicid,
763 affinity_top_method_x2apicid,
764 #endif /* KMP_ARCH_X86 || KMP_ARCH_X86_64 */
765 affinity_top_method_cpuinfo, // KMP_CPUINFO_FILE is usable on Windows* OS, too
766 #if KMP_GROUP_AFFINITY
767 affinity_top_method_group,
768 #endif /* KMP_GROUP_AFFINITY */
769 affinity_top_method_flat,
771 affinity_top_method_hwloc,
773 affinity_top_method_default
776 #define affinity_respect_mask_default (-1)
778 extern enum affinity_type __kmp_affinity_type; /* Affinity type */
779 extern enum affinity_gran __kmp_affinity_gran; /* Affinity granularity */
780 extern int __kmp_affinity_gran_levels; /* corresponding int value */
781 extern int __kmp_affinity_dups; /* Affinity duplicate masks */
782 extern enum affinity_top_method __kmp_affinity_top_method;
783 extern int __kmp_affinity_compact; /* Affinity 'compact' value */
784 extern int __kmp_affinity_offset; /* Affinity offset value */
785 extern int __kmp_affinity_verbose; /* Was verbose specified for KMP_AFFINITY? */
786 extern int __kmp_affinity_warnings; /* KMP_AFFINITY warnings enabled ? */
787 extern int __kmp_affinity_respect_mask; // Respect process' init affinity mask?
788 extern char *__kmp_affinity_proclist; /* proc ID list */
789 extern kmp_affin_mask_t *__kmp_affinity_masks;
790 extern unsigned __kmp_affinity_num_masks;
791 extern void __kmp_affinity_bind_thread(int which);
793 extern kmp_affin_mask_t *__kmp_affin_fullMask;
794 extern char *__kmp_cpuinfo_file;
796 #endif /* KMP_AFFINITY_SUPPORTED */
798 // This needs to be kept in sync with the values in omp.h !!!
799 typedef enum kmp_proc_bind_t {
805 proc_bind_intel, // use KMP_AFFINITY interface
809 typedef struct kmp_nested_proc_bind_t {
810 kmp_proc_bind_t *bind_types;
813 } kmp_nested_proc_bind_t;
815 extern kmp_nested_proc_bind_t __kmp_nested_proc_bind;
817 extern int __kmp_display_affinity;
818 extern char *__kmp_affinity_format;
819 static const size_t KMP_AFFINITY_FORMAT_SIZE = 512;
821 #if KMP_AFFINITY_SUPPORTED
822 #define KMP_PLACE_ALL (-1)
823 #define KMP_PLACE_UNDEFINED (-2)
824 // Is KMP_AFFINITY is being used instead of OMP_PROC_BIND/OMP_PLACES?
825 #define KMP_AFFINITY_NON_PROC_BIND \
826 ((__kmp_nested_proc_bind.bind_types[0] == proc_bind_false || \
827 __kmp_nested_proc_bind.bind_types[0] == proc_bind_intel) && \
828 (__kmp_affinity_num_masks > 0 || __kmp_affinity_type == affinity_balanced))
829 #endif /* KMP_AFFINITY_SUPPORTED */
831 extern int __kmp_affinity_num_places;
833 typedef enum kmp_cancel_kind_t {
841 // KMP_HW_SUBSET support:
842 typedef struct kmp_hws_item {
847 extern kmp_hws_item_t __kmp_hws_socket;
848 extern kmp_hws_item_t __kmp_hws_node;
849 extern kmp_hws_item_t __kmp_hws_tile;
850 extern kmp_hws_item_t __kmp_hws_core;
851 extern kmp_hws_item_t __kmp_hws_proc;
852 extern int __kmp_hws_requested;
853 extern int __kmp_hws_abs_flag; // absolute or per-item number requested
855 /* ------------------------------------------------------------------------ */
857 #define KMP_PAD(type, sz) \
858 (sizeof(type) + (sz - ((sizeof(type) - 1) % (sz)) - 1))
860 // We need to avoid using -1 as a GTID as +1 is added to the gtid
861 // when storing it in a lock, and the value 0 is reserved.
862 #define KMP_GTID_DNE (-2) /* Does not exist */
863 #define KMP_GTID_SHUTDOWN (-3) /* Library is shutting down */
864 #define KMP_GTID_MONITOR (-4) /* Monitor thread ID */
865 #define KMP_GTID_UNKNOWN (-5) /* Is not known */
866 #define KMP_GTID_MIN (-6) /* Minimal gtid for low bound check in DEBUG */
868 /* OpenMP 5.0 Memory Management support */
871 // Duplicate type definitios from omp.h
872 typedef uintptr_t omp_uintptr_t;
875 OMP_ATK_THREADMODEL = 1,
876 OMP_ATK_ALIGNMENT = 2,
878 OMP_ATK_POOL_SIZE = 4,
879 OMP_ATK_FALLBACK = 5,
882 OMP_ATK_PARTITION = 8
883 } omp_alloctrait_key_t;
889 OMP_ATV_CONTENDED = 3,
890 OMP_ATV_UNCONTENDED = 4,
891 OMP_ATV_SEQUENTIAL = 5,
897 OMP_ATV_DEFAULT_MEM_FB = 11,
898 OMP_ATV_NULL_FB = 12,
899 OMP_ATV_ABORT_FB = 13,
900 OMP_ATV_ALLOCATOR_FB = 14,
901 OMP_ATV_ENVIRONMENT = 15,
902 OMP_ATV_NEAREST = 16,
903 OMP_ATV_BLOCKED = 17,
904 OMP_ATV_INTERLEAVED = 18
905 } omp_alloctrait_value_t;
907 typedef void *omp_memspace_handle_t;
908 extern omp_memspace_handle_t const omp_default_mem_space;
909 extern omp_memspace_handle_t const omp_large_cap_mem_space;
910 extern omp_memspace_handle_t const omp_const_mem_space;
911 extern omp_memspace_handle_t const omp_high_bw_mem_space;
912 extern omp_memspace_handle_t const omp_low_lat_mem_space;
915 omp_alloctrait_key_t key;
919 typedef void *omp_allocator_handle_t;
920 extern omp_allocator_handle_t const omp_null_allocator;
921 extern omp_allocator_handle_t const omp_default_mem_alloc;
922 extern omp_allocator_handle_t const omp_large_cap_mem_alloc;
923 extern omp_allocator_handle_t const omp_const_mem_alloc;
924 extern omp_allocator_handle_t const omp_high_bw_mem_alloc;
925 extern omp_allocator_handle_t const omp_low_lat_mem_alloc;
926 extern omp_allocator_handle_t const omp_cgroup_mem_alloc;
927 extern omp_allocator_handle_t const omp_pteam_mem_alloc;
928 extern omp_allocator_handle_t const omp_thread_mem_alloc;
929 extern omp_allocator_handle_t const kmp_max_mem_alloc;
930 extern omp_allocator_handle_t __kmp_def_allocator;
932 // end of duplicate type definitios from omp.h
935 extern int __kmp_memkind_available;
937 typedef omp_memspace_handle_t kmp_memspace_t; // placeholder
939 typedef struct kmp_allocator_t {
940 omp_memspace_handle_t memspace;
941 void **memkind; // pointer to memkind
943 omp_alloctrait_value_t fb;
944 kmp_allocator_t *fb_data;
945 kmp_uint64 pool_size;
946 kmp_uint64 pool_used;
949 extern omp_allocator_handle_t __kmpc_init_allocator(int gtid,
950 omp_memspace_handle_t,
952 omp_alloctrait_t traits[]);
953 extern void __kmpc_destroy_allocator(int gtid, omp_allocator_handle_t al);
954 extern void __kmpc_set_default_allocator(int gtid, omp_allocator_handle_t al);
955 extern omp_allocator_handle_t __kmpc_get_default_allocator(int gtid);
956 extern void *__kmpc_alloc(int gtid, size_t sz, omp_allocator_handle_t al);
957 extern void __kmpc_free(int gtid, void *ptr, omp_allocator_handle_t al);
959 extern void __kmp_init_memkind();
960 extern void __kmp_fini_memkind();
962 /* ------------------------------------------------------------------------ */
964 #define KMP_UINT64_MAX \
965 (~((kmp_uint64)1 << ((sizeof(kmp_uint64) * (1 << 3)) - 1)))
967 #define KMP_MIN_NTH 1
970 #if defined(PTHREAD_THREADS_MAX) && PTHREAD_THREADS_MAX < INT_MAX
971 #define KMP_MAX_NTH PTHREAD_THREADS_MAX
973 #define KMP_MAX_NTH INT_MAX
975 #endif /* KMP_MAX_NTH */
977 #ifdef PTHREAD_STACK_MIN
978 #define KMP_MIN_STKSIZE PTHREAD_STACK_MIN
980 #define KMP_MIN_STKSIZE ((size_t)(32 * 1024))
983 #define KMP_MAX_STKSIZE (~((size_t)1 << ((sizeof(size_t) * (1 << 3)) - 1)))
986 #define KMP_DEFAULT_STKSIZE ((size_t)(2 * 1024 * 1024))
987 #elif KMP_ARCH_X86_64
988 #define KMP_DEFAULT_STKSIZE ((size_t)(4 * 1024 * 1024))
989 #define KMP_BACKUP_STKSIZE ((size_t)(2 * 1024 * 1024))
991 #define KMP_DEFAULT_STKSIZE ((size_t)(1024 * 1024))
994 #define KMP_DEFAULT_MALLOC_POOL_INCR ((size_t)(1024 * 1024))
995 #define KMP_MIN_MALLOC_POOL_INCR ((size_t)(4 * 1024))
996 #define KMP_MAX_MALLOC_POOL_INCR \
997 (~((size_t)1 << ((sizeof(size_t) * (1 << 3)) - 1)))
999 #define KMP_MIN_STKOFFSET (0)
1000 #define KMP_MAX_STKOFFSET KMP_MAX_STKSIZE
1002 #define KMP_DEFAULT_STKOFFSET KMP_MIN_STKOFFSET
1004 #define KMP_DEFAULT_STKOFFSET CACHE_LINE
1007 #define KMP_MIN_STKPADDING (0)
1008 #define KMP_MAX_STKPADDING (2 * 1024 * 1024)
1010 #define KMP_BLOCKTIME_MULTIPLIER \
1011 (1000) /* number of blocktime units per second */
1012 #define KMP_MIN_BLOCKTIME (0)
1013 #define KMP_MAX_BLOCKTIME \
1014 (INT_MAX) /* Must be this for "infinite" setting the work */
1015 #define KMP_DEFAULT_BLOCKTIME (200) /* __kmp_blocktime is in milliseconds */
1018 #define KMP_DEFAULT_MONITOR_STKSIZE ((size_t)(64 * 1024))
1019 #define KMP_MIN_MONITOR_WAKEUPS (1) // min times monitor wakes up per second
1020 #define KMP_MAX_MONITOR_WAKEUPS (1000) // max times monitor can wake up per sec
1022 /* Calculate new number of monitor wakeups for a specific block time based on
1023 previous monitor_wakeups. Only allow increasing number of wakeups */
1024 #define KMP_WAKEUPS_FROM_BLOCKTIME(blocktime, monitor_wakeups) \
1025 (((blocktime) == KMP_MAX_BLOCKTIME) \
1026 ? (monitor_wakeups) \
1027 : ((blocktime) == KMP_MIN_BLOCKTIME) \
1028 ? KMP_MAX_MONITOR_WAKEUPS \
1029 : ((monitor_wakeups) > (KMP_BLOCKTIME_MULTIPLIER / (blocktime))) \
1030 ? (monitor_wakeups) \
1031 : (KMP_BLOCKTIME_MULTIPLIER) / (blocktime))
1033 /* Calculate number of intervals for a specific block time based on
1035 #define KMP_INTERVALS_FROM_BLOCKTIME(blocktime, monitor_wakeups) \
1036 (((blocktime) + (KMP_BLOCKTIME_MULTIPLIER / (monitor_wakeups)) - 1) / \
1037 (KMP_BLOCKTIME_MULTIPLIER / (monitor_wakeups)))
1039 #define KMP_BLOCKTIME(team, tid) \
1040 (get__bt_set(team, tid) ? get__blocktime(team, tid) : __kmp_dflt_blocktime)
1041 #if KMP_OS_UNIX && (KMP_ARCH_X86 || KMP_ARCH_X86_64)
1042 // HW TSC is used to reduce overhead (clock tick instead of nanosecond).
1043 extern kmp_uint64 __kmp_ticks_per_msec;
1044 #if KMP_COMPILER_ICC
1045 #define KMP_NOW() ((kmp_uint64)_rdtsc())
1047 #define KMP_NOW() __kmp_hardware_timestamp()
1049 #define KMP_NOW_MSEC() (KMP_NOW() / __kmp_ticks_per_msec)
1050 #define KMP_BLOCKTIME_INTERVAL(team, tid) \
1051 (KMP_BLOCKTIME(team, tid) * __kmp_ticks_per_msec)
1052 #define KMP_BLOCKING(goal, count) ((goal) > KMP_NOW())
1054 // System time is retrieved sporadically while blocking.
1055 extern kmp_uint64 __kmp_now_nsec();
1056 #define KMP_NOW() __kmp_now_nsec()
1057 #define KMP_NOW_MSEC() (KMP_NOW() / KMP_USEC_PER_SEC)
1058 #define KMP_BLOCKTIME_INTERVAL(team, tid) \
1059 (KMP_BLOCKTIME(team, tid) * KMP_USEC_PER_SEC)
1060 #define KMP_BLOCKING(goal, count) ((count) % 1000 != 0 || (goal) > KMP_NOW())
1062 #endif // KMP_USE_MONITOR
1064 #define KMP_MIN_STATSCOLS 40
1065 #define KMP_MAX_STATSCOLS 4096
1066 #define KMP_DEFAULT_STATSCOLS 80
1068 #define KMP_MIN_INTERVAL 0
1069 #define KMP_MAX_INTERVAL (INT_MAX - 1)
1070 #define KMP_DEFAULT_INTERVAL 0
1072 #define KMP_MIN_CHUNK 1
1073 #define KMP_MAX_CHUNK (INT_MAX - 1)
1074 #define KMP_DEFAULT_CHUNK 1
1076 #define KMP_DFLT_DISP_NUM_BUFF 7
1077 #define KMP_MAX_ORDERED 8
1079 #define KMP_MAX_FIELDS 32
1081 #define KMP_MAX_BRANCH_BITS 31
1083 #define KMP_MAX_ACTIVE_LEVELS_LIMIT INT_MAX
1085 #define KMP_MAX_DEFAULT_DEVICE_LIMIT INT_MAX
1087 #define KMP_MAX_TASK_PRIORITY_LIMIT INT_MAX
1089 /* Minimum number of threads before switch to TLS gtid (experimentally
1091 /* josh TODO: what about OS X* tuning? */
1092 #if KMP_ARCH_X86 || KMP_ARCH_X86_64
1093 #define KMP_TLS_GTID_MIN 5
1095 #define KMP_TLS_GTID_MIN INT_MAX
1098 #define KMP_MASTER_TID(tid) ((tid) == 0)
1099 #define KMP_WORKER_TID(tid) ((tid) != 0)
1101 #define KMP_MASTER_GTID(gtid) (__kmp_tid_from_gtid((gtid)) == 0)
1102 #define KMP_WORKER_GTID(gtid) (__kmp_tid_from_gtid((gtid)) != 0)
1103 #define KMP_INITIAL_GTID(gtid) ((gtid) == 0)
1107 #define TRUE (!FALSE)
1110 /* NOTE: all of the following constants must be even */
1113 #define KMP_INIT_WAIT 64U /* initial number of spin-tests */
1114 #define KMP_NEXT_WAIT 32U /* susequent number of spin-tests */
1116 #define KMP_INIT_WAIT 16U /* initial number of spin-tests */
1117 #define KMP_NEXT_WAIT 8U /* susequent number of spin-tests */
1119 #define KMP_INIT_WAIT 1024U /* initial number of spin-tests */
1120 #define KMP_NEXT_WAIT 512U /* susequent number of spin-tests */
1122 /* TODO: tune for KMP_OS_DARWIN */
1123 #define KMP_INIT_WAIT 1024U /* initial number of spin-tests */
1124 #define KMP_NEXT_WAIT 512U /* susequent number of spin-tests */
1125 #elif KMP_OS_DRAGONFLY
1126 /* TODO: tune for KMP_OS_DRAGONFLY */
1127 #define KMP_INIT_WAIT 1024U /* initial number of spin-tests */
1128 #define KMP_NEXT_WAIT 512U /* susequent number of spin-tests */
1129 #elif KMP_OS_FREEBSD
1130 /* TODO: tune for KMP_OS_FREEBSD */
1131 #define KMP_INIT_WAIT 1024U /* initial number of spin-tests */
1132 #define KMP_NEXT_WAIT 512U /* susequent number of spin-tests */
1134 /* TODO: tune for KMP_OS_NETBSD */
1135 #define KMP_INIT_WAIT 1024U /* initial number of spin-tests */
1136 #define KMP_NEXT_WAIT 512U /* susequent number of spin-tests */
1138 /* TODO: tune for KMP_OS_HURD */
1139 #define KMP_INIT_WAIT 1024U /* initial number of spin-tests */
1140 #define KMP_NEXT_WAIT 512U /* susequent number of spin-tests */
1141 #elif KMP_OS_OPENBSD
1142 /* TODO: tune for KMP_OS_OPENBSD */
1143 #define KMP_INIT_WAIT 1024U /* initial number of spin-tests */
1144 #define KMP_NEXT_WAIT 512U /* susequent number of spin-tests */
1147 #if KMP_ARCH_X86 || KMP_ARCH_X86_64
1148 typedef struct kmp_cpuid {
1155 typedef struct kmp_cpuinfo {
1156 int initialized; // If 0, other fields are not initialized.
1157 int signature; // CPUID(1).EAX
1158 int family; // CPUID(1).EAX[27:20]+CPUID(1).EAX[11:8] (Extended Family+Family)
1159 int model; // ( CPUID(1).EAX[19:16] << 4 ) + CPUID(1).EAX[7:4] ( ( Extended
1160 // Model << 4 ) + Model)
1161 int stepping; // CPUID(1).EAX[3:0] ( Stepping )
1162 int sse2; // 0 if SSE2 instructions are not supported, 1 otherwise.
1163 int rtm; // 0 if RTM instructions are not supported, 1 otherwise.
1164 int cpu_stackoffset;
1168 kmp_uint64 frequency; // Nominal CPU frequency in Hz.
1169 char name[3 * sizeof(kmp_cpuid_t)]; // CPUID(0x80000002,0x80000003,0x80000004)
1172 extern void __kmp_query_cpuid(kmp_cpuinfo_t *p);
1175 // subleaf is only needed for cache and topology discovery and can be set to
1176 // zero in most cases
1177 static inline void __kmp_x86_cpuid(int leaf, int subleaf, struct kmp_cpuid *p) {
1178 __asm__ __volatile__("cpuid"
1179 : "=a"(p->eax), "=b"(p->ebx), "=c"(p->ecx), "=d"(p->edx)
1180 : "a"(leaf), "c"(subleaf));
1182 // Load p into FPU control word
1183 static inline void __kmp_load_x87_fpu_control_word(const kmp_int16 *p) {
1184 __asm__ __volatile__("fldcw %0" : : "m"(*p));
1186 // Store FPU control word into p
1187 static inline void __kmp_store_x87_fpu_control_word(kmp_int16 *p) {
1188 __asm__ __volatile__("fstcw %0" : "=m"(*p));
1190 static inline void __kmp_clear_x87_fpu_status_word() {
1192 // 32-bit protected mode x87 FPU state
1193 struct x87_fpu_state {
1202 struct x87_fpu_state fpu_state = {0, 0, 0, 0, 0, 0, 0};
1203 __asm__ __volatile__("fstenv %0\n\t" // store FP env
1204 "andw $0x7f00, %1\n\t" // clear 0-7,15 bits of FP SW
1205 "fldenv %0\n\t" // load FP env back
1206 : "+m"(fpu_state), "+m"(fpu_state.sw));
1208 __asm__ __volatile__("fnclex");
1212 static inline void __kmp_load_mxcsr(const kmp_uint32 *p) { _mm_setcsr(*p); }
1213 static inline void __kmp_store_mxcsr(kmp_uint32 *p) { *p = _mm_getcsr(); }
1215 static inline void __kmp_load_mxcsr(const kmp_uint32 *p) {}
1216 static inline void __kmp_store_mxcsr(kmp_uint32 *p) { *p = 0; }
1219 // Windows still has these as external functions in assembly file
1220 extern void __kmp_x86_cpuid(int mode, int mode2, struct kmp_cpuid *p);
1221 extern void __kmp_load_x87_fpu_control_word(const kmp_int16 *p);
1222 extern void __kmp_store_x87_fpu_control_word(kmp_int16 *p);
1223 extern void __kmp_clear_x87_fpu_status_word();
1224 static inline void __kmp_load_mxcsr(const kmp_uint32 *p) { _mm_setcsr(*p); }
1225 static inline void __kmp_store_mxcsr(kmp_uint32 *p) { *p = _mm_getcsr(); }
1226 #endif // KMP_OS_UNIX
1228 #define KMP_X86_MXCSR_MASK 0xffffffc0 /* ignore status flags (6 lsb) */
1231 extern void __kmp_x86_pause(void);
1233 // Performance testing on KNC (C0QS-7120 P/A/X/D, 61-core, 16 GB Memory) showed
1234 // regression after removal of extra PAUSE from spin loops. Changing
1235 // the delay from 100 to 300 showed even better performance than double PAUSE
1236 // on Spec OMP2001 and LCPC tasking tests, no regressions on EPCC.
1237 static inline void __kmp_x86_pause(void) { _mm_delay_32(300); }
1239 static inline void __kmp_x86_pause(void) { _mm_pause(); }
1241 #define KMP_CPU_PAUSE() __kmp_x86_pause()
1242 #elif KMP_ARCH_PPC64
1243 #define KMP_PPC64_PRI_LOW() __asm__ volatile("or 1, 1, 1")
1244 #define KMP_PPC64_PRI_MED() __asm__ volatile("or 2, 2, 2")
1245 #define KMP_PPC64_PRI_LOC_MB() __asm__ volatile("" : : : "memory")
1246 #define KMP_CPU_PAUSE() \
1248 KMP_PPC64_PRI_LOW(); \
1249 KMP_PPC64_PRI_MED(); \
1250 KMP_PPC64_PRI_LOC_MB(); \
1253 #define KMP_CPU_PAUSE() /* nothing to do */
1256 #define KMP_INIT_YIELD(count) \
1257 { (count) = __kmp_yield_init; }
1259 #define KMP_OVERSUBSCRIBED \
1260 (TCR_4(__kmp_nth) > (__kmp_avail_proc ? __kmp_avail_proc : __kmp_xproc))
1262 #define KMP_TRY_YIELD \
1263 ((__kmp_use_yield == 1) || (__kmp_use_yield == 2 && (KMP_OVERSUBSCRIBED)))
1265 #define KMP_TRY_YIELD_OVERSUB \
1266 ((__kmp_use_yield == 1 || __kmp_use_yield == 2) && (KMP_OVERSUBSCRIBED))
1268 #define KMP_YIELD(cond) \
1271 if ((cond) && (KMP_TRY_YIELD)) \
1275 #define KMP_YIELD_OVERSUB() \
1278 if ((KMP_TRY_YIELD_OVERSUB)) \
1282 // Note the decrement of 2 in the following Macros. With KMP_LIBRARY=turnaround,
1283 // there should be no yielding since initial value from KMP_INIT_YIELD() is odd.
1284 #define KMP_YIELD_SPIN(count) \
1287 if (KMP_TRY_YIELD) { \
1291 (count) = __kmp_yield_next; \
1296 #define KMP_YIELD_OVERSUB_ELSE_SPIN(count) \
1299 if ((KMP_TRY_YIELD_OVERSUB)) \
1301 else if (__kmp_use_yield == 1) { \
1305 (count) = __kmp_yield_next; \
1310 /* ------------------------------------------------------------------------ */
1311 /* Support datatypes for the orphaned construct nesting checks. */
1312 /* ------------------------------------------------------------------------ */
1322 ct_ordered_in_parallel,
1329 #define IS_CONS_TYPE_ORDERED(ct) ((ct) == ct_pdo_ordered)
1332 ident_t const *ident;
1333 enum cons_type type;
1336 name; /* address exclusively for critical section name comparison */
1339 struct cons_header {
1340 int p_top, w_top, s_top;
1341 int stack_size, stack_top;
1342 struct cons_data *stack_data;
1345 struct kmp_region_info {
1347 int offset[KMP_MAX_FIELDS];
1348 int length[KMP_MAX_FIELDS];
1351 /* ---------------------------------------------------------------------- */
1352 /* ---------------------------------------------------------------------- */
1355 typedef HANDLE kmp_thread_t;
1356 typedef DWORD kmp_key_t;
1357 #endif /* KMP_OS_WINDOWS */
1360 typedef pthread_t kmp_thread_t;
1361 typedef pthread_key_t kmp_key_t;
1364 extern kmp_key_t __kmp_gtid_threadprivate_key;
1366 typedef struct kmp_sys_info {
1367 long maxrss; /* the maximum resident set size utilized (in kilobytes) */
1368 long minflt; /* the number of page faults serviced without any I/O */
1369 long majflt; /* the number of page faults serviced that required I/O */
1370 long nswap; /* the number of times a process was "swapped" out of memory */
1371 long inblock; /* the number of times the file system had to perform input */
1372 long oublock; /* the number of times the file system had to perform output */
1373 long nvcsw; /* the number of times a context switch was voluntarily */
1374 long nivcsw; /* the number of times a context switch was forced */
1378 // We cannot include "kmp_itt.h" due to circular dependency. Declare the only
1379 // required type here. Later we will check the type meets requirements.
1380 typedef int kmp_itt_mark_t;
1381 #define KMP_ITT_DEBUG 0
1382 #endif /* USE_ITT_BUILD */
1384 typedef kmp_int32 kmp_critical_name[8];
1388 The type for a microtask which gets passed to @ref __kmpc_fork_call().
1389 The arguments to the outlined function are
1390 @param global_tid the global thread identity of the thread executing the
1392 @param bound_tid the local identitiy of the thread executing the function
1393 @param ... pointers to shared variables accessed by the function.
1395 typedef void (*kmpc_micro)(kmp_int32 *global_tid, kmp_int32 *bound_tid, ...);
1396 typedef void (*kmpc_micro_bound)(kmp_int32 *bound_tid, kmp_int32 *bound_nth,
1400 @ingroup THREADPRIVATE
1403 /* ---------------------------------------------------------------------------
1405 /* Threadprivate initialization/finalization function declarations */
1407 /* for non-array objects: __kmpc_threadprivate_register() */
1410 Pointer to the constructor function.
1411 The first argument is the <tt>this</tt> pointer
1413 typedef void *(*kmpc_ctor)(void *);
1416 Pointer to the destructor function.
1417 The first argument is the <tt>this</tt> pointer
1419 typedef void (*kmpc_dtor)(
1420 void * /*, size_t */); /* 2nd arg: magic number for KCC unused by Intel
1423 Pointer to an alternate constructor.
1424 The first argument is the <tt>this</tt> pointer.
1426 typedef void *(*kmpc_cctor)(void *, void *);
1428 /* for array objects: __kmpc_threadprivate_register_vec() */
1429 /* First arg: "this" pointer */
1430 /* Last arg: number of array elements */
1433 First argument is the <tt>this</tt> pointer
1434 Second argument the number of array elements.
1436 typedef void *(*kmpc_ctor_vec)(void *, size_t);
1438 Pointer to the array destructor function.
1439 The first argument is the <tt>this</tt> pointer
1440 Second argument the number of array elements.
1442 typedef void (*kmpc_dtor_vec)(void *, size_t);
1445 First argument is the <tt>this</tt> pointer
1446 Third argument the number of array elements.
1448 typedef void *(*kmpc_cctor_vec)(void *, void *,
1449 size_t); /* function unused by compiler */
1455 /* keeps tracked of threadprivate cache allocations for cleanup later */
1456 typedef struct kmp_cached_addr {
1457 void **addr; /* address of allocated cache */
1458 void ***compiler_cache; /* pointer to compiler's cache */
1459 void *data; /* pointer to global data */
1460 struct kmp_cached_addr *next; /* pointer to next cached address */
1461 } kmp_cached_addr_t;
1463 struct private_data {
1464 struct private_data *next; /* The next descriptor in the list */
1465 void *data; /* The data buffer for this descriptor */
1466 int more; /* The repeat count for this descriptor */
1467 size_t size; /* The data size for this descriptor */
1470 struct private_common {
1471 struct private_common *next;
1472 struct private_common *link;
1474 void *par_addr; /* par_addr == gbl_addr for MASTER thread */
1478 struct shared_common {
1479 struct shared_common *next;
1480 struct private_data *pod_init;
1485 kmpc_ctor_vec ctorv;
1489 kmpc_cctor_vec cctorv;
1493 kmpc_dtor_vec dtorv;
1500 #define KMP_HASH_TABLE_LOG2 9 /* log2 of the hash table size */
1501 #define KMP_HASH_TABLE_SIZE \
1502 (1 << KMP_HASH_TABLE_LOG2) /* size of the hash table */
1503 #define KMP_HASH_SHIFT 3 /* throw away this many low bits from the address */
1504 #define KMP_HASH(x) \
1505 ((((kmp_uintptr_t)x) >> KMP_HASH_SHIFT) & (KMP_HASH_TABLE_SIZE - 1))
1507 struct common_table {
1508 struct private_common *data[KMP_HASH_TABLE_SIZE];
1511 struct shared_table {
1512 struct shared_common *data[KMP_HASH_TABLE_SIZE];
1515 /* ------------------------------------------------------------------------ */
1517 #if KMP_USE_HIER_SCHED
1518 // Shared barrier data that exists inside a single unit of the scheduling
1520 typedef struct kmp_hier_private_bdata_t {
1521 kmp_int32 num_active;
1523 kmp_uint64 wait_val[2];
1524 } kmp_hier_private_bdata_t;
1527 typedef struct kmp_sched_flags {
1528 unsigned ordered : 1;
1529 unsigned nomerge : 1;
1530 unsigned contains_last : 1;
1531 #if KMP_USE_HIER_SCHED
1532 unsigned use_hier : 1;
1533 unsigned unused : 28;
1535 unsigned unused : 29;
1537 } kmp_sched_flags_t;
1539 KMP_BUILD_ASSERT(sizeof(kmp_sched_flags_t) == 4);
1541 #if KMP_STATIC_STEAL_ENABLED
1542 typedef struct KMP_ALIGN_CACHE dispatch_private_info32 {
1545 /* Adding KMP_ALIGN_CACHE here doesn't help / can hurt performance */
1549 kmp_int32 static_steal_counter; /* for static_steal only; maybe better to put
1552 // KMP_ALIGN( 16 ) ensures ( if the KMP_ALIGN macro is turned on )
1553 // a) parm3 is properly aligned and
1554 // b) all parm1-4 are in the same cache line.
1555 // Because of parm1-4 are used together, performance seems to be better
1556 // if they are in the same line (not measured though).
1558 struct KMP_ALIGN(32) { // AC: changed 16 to 32 in order to simplify template
1559 kmp_int32 parm1; // structures in kmp_dispatch.cpp. This should
1560 kmp_int32 parm2; // make no real change at least while padding is off.
1565 kmp_uint32 ordered_lower;
1566 kmp_uint32 ordered_upper;
1568 // This var can be placed in the hole between 'tc' and 'parm1', instead of
1569 // 'static_steal_counter'. It would be nice to measure execution times.
1570 // Conditional if/endif can be removed at all.
1571 kmp_int32 last_upper;
1572 #endif /* KMP_OS_WINDOWS */
1573 } dispatch_private_info32_t;
1575 typedef struct KMP_ALIGN_CACHE dispatch_private_info64 {
1576 kmp_int64 count; // current chunk number for static & static-steal scheduling
1577 kmp_int64 ub; /* upper-bound */
1578 /* Adding KMP_ALIGN_CACHE here doesn't help / can hurt performance */
1579 kmp_int64 lb; /* lower-bound */
1580 kmp_int64 st; /* stride */
1581 kmp_int64 tc; /* trip count (number of iterations) */
1582 kmp_int64 static_steal_counter; /* for static_steal only; maybe better to put
1585 /* parm[1-4] are used in different ways by different scheduling algorithms */
1587 // KMP_ALIGN( 32 ) ensures ( if the KMP_ALIGN macro is turned on )
1588 // a) parm3 is properly aligned and
1589 // b) all parm1-4 are in the same cache line.
1590 // Because of parm1-4 are used together, performance seems to be better
1591 // if they are in the same line (not measured though).
1593 struct KMP_ALIGN(32) {
1600 kmp_uint64 ordered_lower;
1601 kmp_uint64 ordered_upper;
1603 // This var can be placed in the hole between 'tc' and 'parm1', instead of
1604 // 'static_steal_counter'. It would be nice to measure execution times.
1605 // Conditional if/endif can be removed at all.
1606 kmp_int64 last_upper;
1607 #endif /* KMP_OS_WINDOWS */
1608 } dispatch_private_info64_t;
1609 #else /* KMP_STATIC_STEAL_ENABLED */
1610 typedef struct KMP_ALIGN_CACHE dispatch_private_info32 {
1623 kmp_uint32 ordered_lower;
1624 kmp_uint32 ordered_upper;
1626 kmp_int32 last_upper;
1627 #endif /* KMP_OS_WINDOWS */
1628 } dispatch_private_info32_t;
1630 typedef struct KMP_ALIGN_CACHE dispatch_private_info64 {
1631 kmp_int64 lb; /* lower-bound */
1632 kmp_int64 ub; /* upper-bound */
1633 kmp_int64 st; /* stride */
1634 kmp_int64 tc; /* trip count (number of iterations) */
1636 /* parm[1-4] are used in different ways by different scheduling algorithms */
1642 kmp_int64 count; /* current chunk number for static scheduling */
1644 kmp_uint64 ordered_lower;
1645 kmp_uint64 ordered_upper;
1647 kmp_int64 last_upper;
1648 #endif /* KMP_OS_WINDOWS */
1649 } dispatch_private_info64_t;
1650 #endif /* KMP_STATIC_STEAL_ENABLED */
1652 typedef struct KMP_ALIGN_CACHE dispatch_private_info {
1653 union private_info {
1654 dispatch_private_info32_t p32;
1655 dispatch_private_info64_t p64;
1657 enum sched_type schedule; /* scheduling algorithm */
1658 kmp_sched_flags_t flags; /* flags (e.g., ordered, nomerge, etc.) */
1659 kmp_int32 ordered_bumped;
1660 // To retain the structure size after making ordered_iteration scalar
1661 kmp_int32 ordered_dummy[KMP_MAX_ORDERED - 3];
1662 // Stack of buffers for nest of serial regions
1663 struct dispatch_private_info *next;
1664 kmp_int32 type_size; /* the size of types in private_info */
1665 #if KMP_USE_HIER_SCHED
1667 void *parent; /* hierarchical scheduling parent pointer */
1669 enum cons_type pushed_ws;
1670 } dispatch_private_info_t;
1672 typedef struct dispatch_shared_info32 {
1673 /* chunk index under dynamic, number of idle threads under static-steal;
1674 iteration index otherwise */
1675 volatile kmp_uint32 iteration;
1676 volatile kmp_uint32 num_done;
1677 volatile kmp_uint32 ordered_iteration;
1678 // Dummy to retain the structure size after making ordered_iteration scalar
1679 kmp_int32 ordered_dummy[KMP_MAX_ORDERED - 1];
1680 } dispatch_shared_info32_t;
1682 typedef struct dispatch_shared_info64 {
1683 /* chunk index under dynamic, number of idle threads under static-steal;
1684 iteration index otherwise */
1685 volatile kmp_uint64 iteration;
1686 volatile kmp_uint64 num_done;
1687 volatile kmp_uint64 ordered_iteration;
1688 // Dummy to retain the structure size after making ordered_iteration scalar
1689 kmp_int64 ordered_dummy[KMP_MAX_ORDERED - 3];
1690 } dispatch_shared_info64_t;
1692 typedef struct dispatch_shared_info {
1694 dispatch_shared_info32_t s32;
1695 dispatch_shared_info64_t s64;
1697 volatile kmp_uint32 buffer_index;
1698 volatile kmp_int32 doacross_buf_idx; // teamwise index
1699 volatile kmp_uint32 *doacross_flags; // shared array of iteration flags (0/1)
1700 kmp_int32 doacross_num_done; // count finished threads
1701 #if KMP_USE_HIER_SCHED
1705 // When linking with libhwloc, the ORDERED EPCC test slows down on big
1706 // machines (> 48 cores). Performance analysis showed that a cache thrash
1707 // was occurring and this padding helps alleviate the problem.
1710 } dispatch_shared_info_t;
1712 typedef struct kmp_disp {
1713 /* Vector for ORDERED SECTION */
1714 void (*th_deo_fcn)(int *gtid, int *cid, ident_t *);
1715 /* Vector for END ORDERED SECTION */
1716 void (*th_dxo_fcn)(int *gtid, int *cid, ident_t *);
1718 dispatch_shared_info_t *th_dispatch_sh_current;
1719 dispatch_private_info_t *th_dispatch_pr_current;
1721 dispatch_private_info_t *th_disp_buffer;
1722 kmp_int32 th_disp_index;
1723 kmp_int32 th_doacross_buf_idx; // thread's doacross buffer index
1724 volatile kmp_uint32 *th_doacross_flags; // pointer to shared array of flags
1725 union { // we can use union here because doacross cannot be used in
1726 // nonmonotonic loops
1727 kmp_int64 *th_doacross_info; // info on loop bounds
1728 kmp_lock_t *th_steal_lock; // lock used for chunk stealing (8-byte variable)
1730 #if KMP_USE_INTERNODE_ALIGNMENT
1731 char more_padding[INTERNODE_CACHE_LINE];
1735 /* ------------------------------------------------------------------------ */
1738 /* constants for barrier state update */
1739 #define KMP_INIT_BARRIER_STATE 0 /* should probably start from zero */
1740 #define KMP_BARRIER_SLEEP_BIT 0 /* bit used for suspend/sleep part of state */
1741 #define KMP_BARRIER_UNUSED_BIT 1 // bit that must never be set for valid state
1742 #define KMP_BARRIER_BUMP_BIT 2 /* lsb used for bump of go/arrived state */
1744 #define KMP_BARRIER_SLEEP_STATE (1 << KMP_BARRIER_SLEEP_BIT)
1745 #define KMP_BARRIER_UNUSED_STATE (1 << KMP_BARRIER_UNUSED_BIT)
1746 #define KMP_BARRIER_STATE_BUMP (1 << KMP_BARRIER_BUMP_BIT)
1748 #if (KMP_BARRIER_SLEEP_BIT >= KMP_BARRIER_BUMP_BIT)
1749 #error "Barrier sleep bit must be smaller than barrier bump bit"
1751 #if (KMP_BARRIER_UNUSED_BIT >= KMP_BARRIER_BUMP_BIT)
1752 #error "Barrier unused bit must be smaller than barrier bump bit"
1755 // Constants for release barrier wait state: currently, hierarchical only
1756 #define KMP_BARRIER_NOT_WAITING 0 // Normal state; worker not in wait_sleep
1757 #define KMP_BARRIER_OWN_FLAG \
1758 1 // Normal state; worker waiting on own b_go flag in release
1759 #define KMP_BARRIER_PARENT_FLAG \
1760 2 // Special state; worker waiting on parent's b_go flag in release
1761 #define KMP_BARRIER_SWITCH_TO_OWN_FLAG \
1762 3 // Special state; tells worker to shift from parent to own b_go
1763 #define KMP_BARRIER_SWITCHING \
1764 4 // Special state; worker resets appropriate flag on wake-up
1766 #define KMP_NOT_SAFE_TO_REAP \
1767 0 // Thread th_reap_state: not safe to reap (tasking)
1768 #define KMP_SAFE_TO_REAP 1 // Thread th_reap_state: safe to reap (not tasking)
1771 bs_plain_barrier = 0, /* 0, All non-fork/join barriers (except reduction
1772 barriers if enabled) */
1773 bs_forkjoin_barrier, /* 1, All fork/join (parallel region) barriers */
1774 #if KMP_FAST_REDUCTION_BARRIER
1775 bs_reduction_barrier, /* 2, All barriers that are used in reduction */
1776 #endif // KMP_FAST_REDUCTION_BARRIER
1777 bs_last_barrier /* Just a placeholder to mark the end */
1780 // to work with reduction barriers just like with plain barriers
1781 #if !KMP_FAST_REDUCTION_BARRIER
1782 #define bs_reduction_barrier bs_plain_barrier
1783 #endif // KMP_FAST_REDUCTION_BARRIER
1785 typedef enum kmp_bar_pat { /* Barrier communication patterns */
1787 0, /* Single level (degenerate) tree */
1789 1, /* Balanced tree with branching factor 2^n */
1791 2, /* Hypercube-embedded tree with min branching
1793 bp_hierarchical_bar = 3, /* Machine hierarchy tree */
1794 bp_last_bar /* Placeholder to mark the end */
1797 #define KMP_BARRIER_ICV_PUSH 1
1799 /* Record for holding the values of the internal controls stack records */
1800 typedef struct kmp_internal_control {
1801 int serial_nesting_level; /* corresponds to the value of the
1802 th_team_serialized field */
1803 kmp_int8 dynamic; /* internal control for dynamic adjustment of threads (per
1806 bt_set; /* internal control for whether blocktime is explicitly set */
1807 int blocktime; /* internal control for blocktime */
1809 int bt_intervals; /* internal control for blocktime intervals */
1811 int nproc; /* internal control for #threads for next parallel region (per
1813 int thread_limit; /* internal control for thread-limit-var */
1814 int max_active_levels; /* internal control for max_active_levels */
1816 sched; /* internal control for runtime schedule {sched,chunk} pair */
1817 kmp_proc_bind_t proc_bind; /* internal control for affinity */
1818 kmp_int32 default_device; /* internal control for default device */
1819 struct kmp_internal_control *next;
1820 } kmp_internal_control_t;
1822 static inline void copy_icvs(kmp_internal_control_t *dst,
1823 kmp_internal_control_t *src) {
1827 /* Thread barrier needs volatile barrier fields */
1828 typedef struct KMP_ALIGN_CACHE kmp_bstate {
1829 // th_fixed_icvs is aligned by virtue of kmp_bstate being aligned (and all
1830 // uses of it). It is not explicitly aligned below, because we *don't* want
1831 // it to be padded -- instead, we fit b_go into the same cache line with
1832 // th_fixed_icvs, enabling NGO cache lines stores in the hierarchical barrier.
1833 kmp_internal_control_t th_fixed_icvs; // Initial ICVs for the thread
1834 // Tuck b_go into end of th_fixed_icvs cache line, so it can be stored with
1836 volatile kmp_uint64 b_go; // STATE => task should proceed (hierarchical)
1837 KMP_ALIGN_CACHE volatile kmp_uint64
1838 b_arrived; // STATE => task reached synch point.
1839 kmp_uint32 *skip_per_level;
1840 kmp_uint32 my_level;
1841 kmp_int32 parent_tid;
1844 struct kmp_bstate *parent_bar;
1846 kmp_uint64 leaf_state;
1848 kmp_uint8 base_leaf_kids;
1849 kmp_uint8 leaf_kids;
1851 kmp_uint8 wait_flag;
1852 kmp_uint8 use_oncore_barrier;
1854 // The following field is intended for the debugger solely. Only the worker
1855 // thread itself accesses this field: the worker increases it by 1 when it
1856 // arrives to a barrier.
1857 KMP_ALIGN_CACHE kmp_uint b_worker_arrived;
1858 #endif /* USE_DEBUGGER */
1861 union KMP_ALIGN_CACHE kmp_barrier_union {
1862 double b_align; /* use worst case alignment */
1863 char b_pad[KMP_PAD(kmp_bstate_t, CACHE_LINE)];
1867 typedef union kmp_barrier_union kmp_balign_t;
1869 /* Team barrier needs only non-volatile arrived counter */
1870 union KMP_ALIGN_CACHE kmp_barrier_team_union {
1871 double b_align; /* use worst case alignment */
1872 char b_pad[CACHE_LINE];
1874 kmp_uint64 b_arrived; /* STATE => task reached synch point. */
1876 // The following two fields are indended for the debugger solely. Only
1877 // master of the team accesses these fields: the first one is increased by
1878 // 1 when master arrives to a barrier, the second one is increased by one
1879 // when all the threads arrived.
1880 kmp_uint b_master_arrived;
1881 kmp_uint b_team_arrived;
1886 typedef union kmp_barrier_team_union kmp_balign_team_t;
1888 /* Padding for Linux* OS pthreads condition variables and mutexes used to signal
1889 threads when a condition changes. This is to workaround an NPTL bug where
1890 padding was added to pthread_cond_t which caused the initialization routine
1891 to write outside of the structure if compiled on pre-NPTL threads. */
1893 typedef struct kmp_win32_mutex {
1895 CRITICAL_SECTION cs;
1896 } kmp_win32_mutex_t;
1898 typedef struct kmp_win32_cond {
1899 /* Count of the number of waiters. */
1902 /* Serialize access to <waiters_count_> */
1903 kmp_win32_mutex_t waiters_count_lock_;
1905 /* Number of threads to release via a <cond_broadcast> or a <cond_signal> */
1908 /* Keeps track of the current "generation" so that we don't allow */
1909 /* one thread to steal all the "releases" from the broadcast. */
1910 int wait_generation_count_;
1912 /* A manual-reset event that's used to block and release waiting threads. */
1919 union KMP_ALIGN_CACHE kmp_cond_union {
1921 char c_pad[CACHE_LINE];
1922 pthread_cond_t c_cond;
1925 typedef union kmp_cond_union kmp_cond_align_t;
1927 union KMP_ALIGN_CACHE kmp_mutex_union {
1929 char m_pad[CACHE_LINE];
1930 pthread_mutex_t m_mutex;
1933 typedef union kmp_mutex_union kmp_mutex_align_t;
1935 #endif /* KMP_OS_UNIX */
1937 typedef struct kmp_desc_base {
1939 size_t ds_stacksize;
1941 kmp_thread_t ds_thread;
1942 volatile int ds_tid;
1945 volatile int ds_alive;
1947 /* ds_thread keeps thread handle on Windows* OS. It is enough for RTL purposes.
1948 However, debugger support (libomp_db) cannot work with handles, because they
1949 uncomparable. For example, debugger requests info about thread with handle h.
1950 h is valid within debugger process, and meaningless within debugee process.
1951 Even if h is duped by call to DuplicateHandle(), so the result h' is valid
1952 within debugee process, but it is a *new* handle which does *not* equal to
1953 any other handle in debugee... The only way to compare handles is convert
1954 them to system-wide ids. GetThreadId() function is available only in
1955 Longhorn and Server 2003. :-( In contrast, GetCurrentThreadId() is available
1956 on all Windows* OS flavours (including Windows* 95). Thus, we have to get
1957 thread id by call to GetCurrentThreadId() from within the thread and save it
1958 to let libomp_db identify threads. */
1959 #endif /* KMP_OS_WINDOWS */
1962 typedef union KMP_ALIGN_CACHE kmp_desc {
1963 double ds_align; /* use worst case alignment */
1964 char ds_pad[KMP_PAD(kmp_desc_base_t, CACHE_LINE)];
1968 typedef struct kmp_local {
1969 volatile int this_construct; /* count of single's encountered by thread */
1974 #if !USE_CMP_XCHG_FOR_BGET
1975 #ifdef USE_QUEUING_LOCK_FOR_BGET
1976 kmp_lock_t bget_lock; /* Lock for accessing bget free list */
1978 kmp_bootstrap_lock_t bget_lock; // Lock for accessing bget free list. Must be
1979 // bootstrap lock so we can use it at library
1981 #endif /* USE_LOCK_FOR_BGET */
1982 #endif /* ! USE_CMP_XCHG_FOR_BGET */
1983 #endif /* KMP_USE_BGET */
1985 PACKED_REDUCTION_METHOD_T
1986 packed_reduction_method; /* stored by __kmpc_reduce*(), used by
1987 __kmpc_end_reduce*() */
1991 #define KMP_CHECK_UPDATE(a, b) \
1994 #define KMP_CHECK_UPDATE_SYNC(a, b) \
1996 TCW_SYNC_PTR((a), (b))
1998 #define get__blocktime(xteam, xtid) \
1999 ((xteam)->t.t_threads[(xtid)]->th.th_current_task->td_icvs.blocktime)
2000 #define get__bt_set(xteam, xtid) \
2001 ((xteam)->t.t_threads[(xtid)]->th.th_current_task->td_icvs.bt_set)
2003 #define get__bt_intervals(xteam, xtid) \
2004 ((xteam)->t.t_threads[(xtid)]->th.th_current_task->td_icvs.bt_intervals)
2007 #define get__dynamic_2(xteam, xtid) \
2008 ((xteam)->t.t_threads[(xtid)]->th.th_current_task->td_icvs.dynamic)
2009 #define get__nproc_2(xteam, xtid) \
2010 ((xteam)->t.t_threads[(xtid)]->th.th_current_task->td_icvs.nproc)
2011 #define get__sched_2(xteam, xtid) \
2012 ((xteam)->t.t_threads[(xtid)]->th.th_current_task->td_icvs.sched)
2014 #define set__blocktime_team(xteam, xtid, xval) \
2015 (((xteam)->t.t_threads[(xtid)]->th.th_current_task->td_icvs.blocktime) = \
2019 #define set__bt_intervals_team(xteam, xtid, xval) \
2020 (((xteam)->t.t_threads[(xtid)]->th.th_current_task->td_icvs.bt_intervals) = \
2024 #define set__bt_set_team(xteam, xtid, xval) \
2025 (((xteam)->t.t_threads[(xtid)]->th.th_current_task->td_icvs.bt_set) = (xval))
2027 #define set__dynamic(xthread, xval) \
2028 (((xthread)->th.th_current_task->td_icvs.dynamic) = (xval))
2029 #define get__dynamic(xthread) \
2030 (((xthread)->th.th_current_task->td_icvs.dynamic) ? (FTN_TRUE) : (FTN_FALSE))
2032 #define set__nproc(xthread, xval) \
2033 (((xthread)->th.th_current_task->td_icvs.nproc) = (xval))
2035 #define set__thread_limit(xthread, xval) \
2036 (((xthread)->th.th_current_task->td_icvs.thread_limit) = (xval))
2038 #define set__max_active_levels(xthread, xval) \
2039 (((xthread)->th.th_current_task->td_icvs.max_active_levels) = (xval))
2041 #define get__max_active_levels(xthread) \
2042 ((xthread)->th.th_current_task->td_icvs.max_active_levels)
2044 #define set__sched(xthread, xval) \
2045 (((xthread)->th.th_current_task->td_icvs.sched) = (xval))
2047 #define set__proc_bind(xthread, xval) \
2048 (((xthread)->th.th_current_task->td_icvs.proc_bind) = (xval))
2049 #define get__proc_bind(xthread) \
2050 ((xthread)->th.th_current_task->td_icvs.proc_bind)
2052 // OpenMP tasking data structures
2054 typedef enum kmp_tasking_mode {
2055 tskm_immediate_exec = 0,
2056 tskm_extra_barrier = 1,
2057 tskm_task_teams = 2,
2059 } kmp_tasking_mode_t;
2061 extern kmp_tasking_mode_t
2062 __kmp_tasking_mode; /* determines how/when to execute tasks */
2063 extern int __kmp_task_stealing_constraint;
2064 extern int __kmp_enable_task_throttling;
2065 extern kmp_int32 __kmp_default_device; // Set via OMP_DEFAULT_DEVICE if
2066 // specified, defaults to 0 otherwise
2067 // Set via OMP_MAX_TASK_PRIORITY if specified, defaults to 0 otherwise
2068 extern kmp_int32 __kmp_max_task_priority;
2069 // Set via KMP_TASKLOOP_MIN_TASKS if specified, defaults to 0 otherwise
2070 extern kmp_uint64 __kmp_taskloop_min_tasks;
2072 /* NOTE: kmp_taskdata_t and kmp_task_t structures allocated in single block with
2074 #define KMP_TASK_TO_TASKDATA(task) (((kmp_taskdata_t *)task) - 1)
2075 #define KMP_TASKDATA_TO_TASK(taskdata) (kmp_task_t *)(taskdata + 1)
2077 // The tt_found_tasks flag is a signal to all threads in the team that tasks
2078 // were spawned and queued since the previous barrier release.
2079 #define KMP_TASKING_ENABLED(task_team) \
2080 (TCR_SYNC_4((task_team)->tt.tt_found_tasks) == TRUE)
2082 @ingroup BASIC_TYPES
2088 typedef kmp_int32 (*kmp_routine_entry_t)(kmp_int32, void *);
2090 typedef union kmp_cmplrdata {
2091 kmp_int32 priority; /**< priority specified by user for the task */
2093 destructors; /* pointer to function to invoke deconstructors of
2094 firstprivate C++ objects */
2098 /* sizeof_kmp_task_t passed as arg to kmpc_omp_task call */
2101 typedef struct kmp_task { /* GEH: Shouldn't this be aligned somehow? */
2102 void *shareds; /**< pointer to block of pointers to shared vars */
2104 routine; /**< pointer to routine to call for executing task */
2105 kmp_int32 part_id; /**< part id for the task */
2107 data1; /* Two known optional additions: destructors and priority */
2108 kmp_cmplrdata_t data2; /* Process destructors first, priority second */
2117 typedef struct kmp_taskgroup {
2118 std::atomic<kmp_int32> count; // number of allocated and incomplete tasks
2119 std::atomic<kmp_int32>
2120 cancel_request; // request for cancellation of this taskgroup
2121 struct kmp_taskgroup *parent; // parent taskgroup
2122 // Block of data to perform task reduction
2123 void *reduce_data; // reduction related info
2124 kmp_int32 reduce_num_data; // number of data items to reduce
2127 // forward declarations
2128 typedef union kmp_depnode kmp_depnode_t;
2129 typedef struct kmp_depnode_list kmp_depnode_list_t;
2130 typedef struct kmp_dephash_entry kmp_dephash_entry_t;
2132 // Compiler sends us this info:
2133 typedef struct kmp_depend_info {
2134 kmp_intptr_t base_addr;
2141 } kmp_depend_info_t;
2143 // Internal structures to work with task dependencies:
2144 struct kmp_depnode_list {
2145 kmp_depnode_t *node;
2146 kmp_depnode_list_t *next;
2149 // Max number of mutexinoutset dependencies per node
2150 #define MAX_MTX_DEPS 4
2152 typedef struct kmp_base_depnode {
2153 kmp_depnode_list_t *successors; /* used under lock */
2154 kmp_task_t *task; /* non-NULL if depnode is active, used under lock */
2155 kmp_lock_t *mtx_locks[MAX_MTX_DEPS]; /* lock mutexinoutset dependent tasks */
2156 kmp_int32 mtx_num_locks; /* number of locks in mtx_locks array */
2157 kmp_lock_t lock; /* guards shared fields: task, successors */
2158 #if KMP_SUPPORT_GRAPH_OUTPUT
2161 std::atomic<kmp_int32> npredecessors;
2162 std::atomic<kmp_int32> nrefs;
2163 } kmp_base_depnode_t;
2165 union KMP_ALIGN_CACHE kmp_depnode {
2166 double dn_align; /* use worst case alignment */
2167 char dn_pad[KMP_PAD(kmp_base_depnode_t, CACHE_LINE)];
2168 kmp_base_depnode_t dn;
2171 struct kmp_dephash_entry {
2173 kmp_depnode_t *last_out;
2174 kmp_depnode_list_t *last_ins;
2175 kmp_depnode_list_t *last_mtxs;
2176 kmp_int32 last_flag;
2177 kmp_lock_t *mtx_lock; /* is referenced by depnodes w/mutexinoutset dep */
2178 kmp_dephash_entry_t *next_in_bucket;
2181 typedef struct kmp_dephash {
2182 kmp_dephash_entry_t **buckets;
2185 kmp_uint32 nelements;
2186 kmp_uint32 nconflicts;
2190 typedef struct kmp_task_affinity_info {
2191 kmp_intptr_t base_addr;
2196 kmp_int32 reserved : 30;
2198 } kmp_task_affinity_info_t;
2200 typedef enum kmp_event_type_t {
2201 KMP_EVENT_UNINITIALIZED = 0,
2202 KMP_EVENT_ALLOW_COMPLETION = 1
2206 kmp_event_type_t type;
2207 kmp_tas_lock_t lock;
2213 #ifdef BUILD_TIED_TASK_STACK
2215 /* Tied Task stack definitions */
2216 typedef struct kmp_stack_block {
2217 kmp_taskdata_t *sb_block[TASK_STACK_BLOCK_SIZE];
2218 struct kmp_stack_block *sb_next;
2219 struct kmp_stack_block *sb_prev;
2220 } kmp_stack_block_t;
2222 typedef struct kmp_task_stack {
2223 kmp_stack_block_t ts_first_block; // first block of stack entries
2224 kmp_taskdata_t **ts_top; // pointer to the top of stack
2225 kmp_int32 ts_entries; // number of entries on the stack
2228 #endif // BUILD_TIED_TASK_STACK
2230 typedef struct kmp_tasking_flags { /* Total struct must be exactly 32 bits */
2231 /* Compiler flags */ /* Total compiler flags must be 16 bits */
2232 unsigned tiedness : 1; /* task is either tied (1) or untied (0) */
2233 unsigned final : 1; /* task is final(1) so execute immediately */
2234 unsigned merged_if0 : 1; /* no __kmpc_task_{begin/complete}_if0 calls in if0
2236 unsigned destructors_thunk : 1; /* set if the compiler creates a thunk to
2237 invoke destructors from the runtime */
2238 unsigned proxy : 1; /* task is a proxy task (it will be executed outside the
2239 context of the RTL) */
2240 unsigned priority_specified : 1; /* set if the compiler provides priority
2241 setting for the task */
2242 unsigned detachable : 1; /* 1 == can detach */
2243 unsigned reserved : 9; /* reserved for compiler use */
2245 /* Library flags */ /* Total library flags must be 16 bits */
2246 unsigned tasktype : 1; /* task is either explicit(1) or implicit (0) */
2247 unsigned task_serial : 1; // task is executed immediately (1) or deferred (0)
2248 unsigned tasking_ser : 1; // all tasks in team are either executed immediately
2249 // (1) or may be deferred (0)
2250 unsigned team_serial : 1; // entire team is serial (1) [1 thread] or parallel
2251 // (0) [>= 2 threads]
2252 /* If either team_serial or tasking_ser is set, task team may be NULL */
2253 /* Task State Flags: */
2254 unsigned started : 1; /* 1==started, 0==not started */
2255 unsigned executing : 1; /* 1==executing, 0==not executing */
2256 unsigned complete : 1; /* 1==complete, 0==not complete */
2257 unsigned freed : 1; /* 1==freed, 0==allocateed */
2258 unsigned native : 1; /* 1==gcc-compiled task, 0==intel */
2259 unsigned reserved31 : 7; /* reserved for library use */
2261 } kmp_tasking_flags_t;
2263 struct kmp_taskdata { /* aligned during dynamic allocation */
2264 kmp_int32 td_task_id; /* id, assigned by debugger */
2265 kmp_tasking_flags_t td_flags; /* task flags */
2266 kmp_team_t *td_team; /* team for this task */
2267 kmp_info_p *td_alloc_thread; /* thread that allocated data structures */
2268 /* Currently not used except for perhaps IDB */
2269 kmp_taskdata_t *td_parent; /* parent task */
2270 kmp_int32 td_level; /* task nesting level */
2271 std::atomic<kmp_int32> td_untied_count; // untied task active parts counter
2272 ident_t *td_ident; /* task identifier */
2274 ident_t *td_taskwait_ident;
2275 kmp_uint32 td_taskwait_counter;
2276 kmp_int32 td_taskwait_thread; /* gtid + 1 of thread encountered taskwait */
2277 KMP_ALIGN_CACHE kmp_internal_control_t
2278 td_icvs; /* Internal control variables for the task */
2279 KMP_ALIGN_CACHE std::atomic<kmp_int32>
2280 td_allocated_child_tasks; /* Child tasks (+ current task) not yet
2282 std::atomic<kmp_int32>
2283 td_incomplete_child_tasks; /* Child tasks not yet complete */
2285 *td_taskgroup; // Each task keeps pointer to its current taskgroup
2287 *td_dephash; // Dependencies for children tasks are tracked from here
2289 *td_depnode; // Pointer to graph node if this task has dependencies
2290 kmp_task_team_t *td_task_team;
2291 kmp_int32 td_size_alloc; // The size of task structure, including shareds etc.
2292 #if defined(KMP_GOMP_COMPAT)
2293 // 4 or 8 byte integers for the loop bounds in GOMP_taskloop
2294 kmp_int32 td_size_loop_bounds;
2296 kmp_taskdata_t *td_last_tied; // keep tied task for task scheduling constraint
2297 #if defined(KMP_GOMP_COMPAT)
2298 // GOMP sends in a copy function for copy constructors
2299 void (*td_copy_func)(void *, void *);
2301 kmp_event_t td_allow_completion_event;
2303 ompt_task_info_t ompt_task_info;
2305 }; // struct kmp_taskdata
2307 // Make sure padding above worked
2308 KMP_BUILD_ASSERT(sizeof(kmp_taskdata_t) % sizeof(void *) == 0);
2310 // Data for task team but per thread
2311 typedef struct kmp_base_thread_data {
2312 kmp_info_p *td_thr; // Pointer back to thread info
2313 // Used only in __kmp_execute_tasks_template, maybe not avail until task is
2315 kmp_bootstrap_lock_t td_deque_lock; // Lock for accessing deque
2317 *td_deque; // Deque of tasks encountered by td_thr, dynamically allocated
2318 kmp_int32 td_deque_size; // Size of deck
2319 kmp_uint32 td_deque_head; // Head of deque (will wrap)
2320 kmp_uint32 td_deque_tail; // Tail of deque (will wrap)
2321 kmp_int32 td_deque_ntasks; // Number of tasks in deque
2322 // GEH: shouldn't this be volatile since used in while-spin?
2323 kmp_int32 td_deque_last_stolen; // Thread number of last successful steal
2324 #ifdef BUILD_TIED_TASK_STACK
2325 kmp_task_stack_t td_susp_tied_tasks; // Stack of suspended tied tasks for task
2326 // scheduling constraint
2327 #endif // BUILD_TIED_TASK_STACK
2328 } kmp_base_thread_data_t;
2330 #define TASK_DEQUE_BITS 8 // Used solely to define INITIAL_TASK_DEQUE_SIZE
2331 #define INITIAL_TASK_DEQUE_SIZE (1 << TASK_DEQUE_BITS)
2333 #define TASK_DEQUE_SIZE(td) ((td).td_deque_size)
2334 #define TASK_DEQUE_MASK(td) ((td).td_deque_size - 1)
2336 typedef union KMP_ALIGN_CACHE kmp_thread_data {
2337 kmp_base_thread_data_t td;
2338 double td_align; /* use worst case alignment */
2339 char td_pad[KMP_PAD(kmp_base_thread_data_t, CACHE_LINE)];
2340 } kmp_thread_data_t;
2342 // Data for task teams which are used when tasking is enabled for the team
2343 typedef struct kmp_base_task_team {
2344 kmp_bootstrap_lock_t
2345 tt_threads_lock; /* Lock used to allocate per-thread part of task team */
2346 /* must be bootstrap lock since used at library shutdown*/
2347 kmp_task_team_t *tt_next; /* For linking the task team free list */
2349 *tt_threads_data; /* Array of per-thread structures for task team */
2350 /* Data survives task team deallocation */
2351 kmp_int32 tt_found_tasks; /* Have we found tasks and queued them while
2352 executing this team? */
2353 /* TRUE means tt_threads_data is set up and initialized */
2354 kmp_int32 tt_nproc; /* #threads in team */
2355 kmp_int32 tt_max_threads; // # entries allocated for threads_data array
2356 kmp_int32 tt_found_proxy_tasks; // found proxy tasks since last barrier
2357 kmp_int32 tt_untied_task_encountered;
2360 std::atomic<kmp_int32> tt_unfinished_threads; /* #threads still active */
2364 tt_active; /* is the team still actively executing tasks */
2365 } kmp_base_task_team_t;
2367 union KMP_ALIGN_CACHE kmp_task_team {
2368 kmp_base_task_team_t tt;
2369 double tt_align; /* use worst case alignment */
2370 char tt_pad[KMP_PAD(kmp_base_task_team_t, CACHE_LINE)];
2373 #if (USE_FAST_MEMORY == 3) || (USE_FAST_MEMORY == 5)
2374 // Free lists keep same-size free memory slots for fast memory allocation
2376 typedef struct kmp_free_list {
2377 void *th_free_list_self; // Self-allocated tasks free list
2378 void *th_free_list_sync; // Self-allocated tasks stolen/returned by other
2380 void *th_free_list_other; // Non-self free list (to be returned to owner's
2384 #if KMP_NESTED_HOT_TEAMS
2385 // Hot teams array keeps hot teams and their sizes for given thread. Hot teams
2386 // are not put in teams pool, and they don't put threads in threads pool.
2387 typedef struct kmp_hot_team_ptr {
2388 kmp_team_p *hot_team; // pointer to hot_team of given nesting level
2389 kmp_int32 hot_team_nth; // number of threads allocated for the hot_team
2390 } kmp_hot_team_ptr_t;
2392 typedef struct kmp_teams_size {
2393 kmp_int32 nteams; // number of teams in a league
2394 kmp_int32 nth; // number of threads in each team of the league
2397 // This struct stores a thread that acts as a "root" for a contention
2398 // group. Contention groups are rooted at kmp_root threads, but also at
2399 // each master thread of each team created in the teams construct.
2400 // This struct therefore also stores a thread_limit associated with
2401 // that contention group, and a counter to track the number of threads
2402 // active in that contention group. Each thread has a list of these: CG
2403 // root threads have an entry in their list in which cg_root refers to
2404 // the thread itself, whereas other workers in the CG will have a
2405 // single entry where cg_root is same as the entry containing their CG
2406 // root. When a thread encounters a teams construct, it will add a new
2407 // entry to the front of its list, because it now roots a new CG.
2408 typedef struct kmp_cg_root {
2409 kmp_info_p *cg_root; // "root" thread for a contention group
2410 // The CG root's limit comes from OMP_THREAD_LIMIT for root threads, or
2411 // thread_limit clause for teams masters
2412 kmp_int32 cg_thread_limit;
2413 kmp_int32 cg_nthreads; // Count of active threads in CG rooted at cg_root
2414 struct kmp_cg_root *up; // pointer to higher level CG root in list
2417 // OpenMP thread data structures
2419 typedef struct KMP_ALIGN_CACHE kmp_base_info {
2420 /* Start with the readonly data which is cache aligned and padded. This is
2421 written before the thread starts working by the master. Uber masters may
2422 update themselves later. Usage does not consider serialized regions. */
2424 kmp_team_p *th_team; /* team we belong to */
2425 kmp_root_p *th_root; /* pointer to root of task hierarchy */
2426 kmp_info_p *th_next_pool; /* next available thread in the pool */
2427 kmp_disp_t *th_dispatch; /* thread's dispatch data */
2428 int th_in_pool; /* in thread pool (32 bits for TCR/TCW) */
2430 /* The following are cached from the team info structure */
2431 /* TODO use these in more places as determined to be needed via profiling */
2432 int th_team_nproc; /* number of threads in a team */
2433 kmp_info_p *th_team_master; /* the team's master thread */
2434 int th_team_serialized; /* team is serialized */
2435 microtask_t th_teams_microtask; /* save entry address for teams construct */
2436 int th_teams_level; /* save initial level of teams construct */
2437 /* it is 0 on device but may be any on host */
2439 /* The blocktime info is copied from the team struct to the thread sruct */
2440 /* at the start of a barrier, and the values stored in the team are used */
2441 /* at points in the code where the team struct is no longer guaranteed */
2442 /* to exist (from the POV of worker threads). */
2444 int th_team_bt_intervals;
2447 kmp_uint64 th_team_bt_intervals;
2450 #if KMP_AFFINITY_SUPPORTED
2451 kmp_affin_mask_t *th_affin_mask; /* thread's current affinity mask */
2453 omp_allocator_handle_t th_def_allocator; /* default allocator */
2454 /* The data set by the master at reinit, then R/W by the worker */
2456 th_set_nproc; /* if > 0, then only use this request for the next fork */
2457 #if KMP_NESTED_HOT_TEAMS
2458 kmp_hot_team_ptr_t *th_hot_teams; /* array of hot teams */
2461 th_set_proc_bind; /* if != proc_bind_default, use request for next fork */
2463 th_teams_size; /* number of teams/threads in teams construct */
2464 #if KMP_AFFINITY_SUPPORTED
2465 int th_current_place; /* place currently bound to */
2466 int th_new_place; /* place to bind to in par reg */
2467 int th_first_place; /* first place in partition */
2468 int th_last_place; /* last place in partition */
2470 int th_prev_level; /* previous level for affinity format */
2471 int th_prev_num_threads; /* previous num_threads for affinity format */
2473 kmp_uint64 th_bar_arrive_time; /* arrival to barrier timestamp */
2474 kmp_uint64 th_bar_min_time; /* minimum arrival time at the barrier */
2475 kmp_uint64 th_frame_time; /* frame timestamp */
2476 #endif /* USE_ITT_BUILD */
2477 kmp_local_t th_local;
2478 struct private_common *th_pri_head;
2480 /* Now the data only used by the worker (after initial allocation) */
2481 /* TODO the first serial team should actually be stored in the info_t
2482 structure. this will help reduce initial allocation overhead */
2483 KMP_ALIGN_CACHE kmp_team_p
2484 *th_serial_team; /*serialized team held in reserve*/
2487 ompt_thread_info_t ompt_thread_info;
2490 /* The following are also read by the master during reinit */
2491 struct common_table *th_pri_common;
2493 volatile kmp_uint32 th_spin_here; /* thread-local location for spinning */
2494 /* while awaiting queuing lock acquire */
2496 volatile void *th_sleep_loc; // this points at a kmp_flag<T>
2499 unsigned th_x; // Random number generator data
2500 unsigned th_a; // Random number generator data
2502 /* Tasking-related data for the thread */
2503 kmp_task_team_t *th_task_team; // Task team struct
2504 kmp_taskdata_t *th_current_task; // Innermost Task being executed
2505 kmp_uint8 th_task_state; // alternating 0/1 for task team identification
2506 kmp_uint8 *th_task_state_memo_stack; // Stack holding memos of th_task_state
2508 kmp_uint32 th_task_state_top; // Top element of th_task_state_memo_stack
2509 kmp_uint32 th_task_state_stack_sz; // Size of th_task_state_memo_stack
2510 kmp_uint32 th_reap_state; // Non-zero indicates thread is not
2511 // tasking, thus safe to reap
2513 /* More stuff for keeping track of active/sleeping threads (this part is
2514 written by the worker thread) */
2515 kmp_uint8 th_active_in_pool; // included in count of #active threads in pool
2516 int th_active; // ! sleeping; 32 bits for TCR/TCW
2517 struct cons_header *th_cons; // used for consistency check
2518 #if KMP_USE_HIER_SCHED
2519 // used for hierarchical scheduling
2520 kmp_hier_private_bdata_t *th_hier_bar_data;
2523 /* Add the syncronizing data which is cache aligned and padded. */
2524 KMP_ALIGN_CACHE kmp_balign_t th_bar[bs_last_barrier];
2526 KMP_ALIGN_CACHE volatile kmp_int32
2527 th_next_waiting; /* gtid+1 of next thread on lock wait queue, 0 if none */
2529 #if (USE_FAST_MEMORY == 3) || (USE_FAST_MEMORY == 5)
2531 kmp_free_list_t th_free_lists[NUM_LISTS]; // Free lists for fast memory
2532 // allocation routines
2536 kmp_win32_cond_t th_suspend_cv;
2537 kmp_win32_mutex_t th_suspend_mx;
2538 std::atomic<int> th_suspend_init;
2541 kmp_cond_align_t th_suspend_cv;
2542 kmp_mutex_align_t th_suspend_mx;
2543 std::atomic<int> th_suspend_init_count;
2547 kmp_itt_mark_t th_itt_mark_single;
2549 #endif /* USE_ITT_BUILD */
2550 #if KMP_STATS_ENABLED
2551 kmp_stats_list *th_stats;
2554 std::atomic<bool> th_blocking;
2556 kmp_cg_root_t *th_cg_roots; // list of cg_roots associated with this thread
2559 typedef union KMP_ALIGN_CACHE kmp_info {
2560 double th_align; /* use worst case alignment */
2561 char th_pad[KMP_PAD(kmp_base_info_t, CACHE_LINE)];
2565 // OpenMP thread team data structures
2567 typedef struct kmp_base_data { volatile kmp_uint32 t_value; } kmp_base_data_t;
2569 typedef union KMP_ALIGN_CACHE kmp_sleep_team {
2570 double dt_align; /* use worst case alignment */
2571 char dt_pad[KMP_PAD(kmp_base_data_t, CACHE_LINE)];
2575 typedef union KMP_ALIGN_CACHE kmp_ordered_team {
2576 double dt_align; /* use worst case alignment */
2577 char dt_pad[KMP_PAD(kmp_base_data_t, CACHE_LINE)];
2579 } kmp_ordered_team_t;
2581 typedef int (*launch_t)(int gtid);
2583 /* Minimum number of ARGV entries to malloc if necessary */
2584 #define KMP_MIN_MALLOC_ARGV_ENTRIES 100
2586 // Set up how many argv pointers will fit in cache lines containing
2587 // t_inline_argv. Historically, we have supported at least 96 bytes. Using a
2588 // larger value for more space between the master write/worker read section and
2589 // read/write by all section seems to buy more performance on EPCC PARALLEL.
2590 #if KMP_ARCH_X86 || KMP_ARCH_X86_64
2591 #define KMP_INLINE_ARGV_BYTES \
2593 ((3 * KMP_PTR_SKIP + 2 * sizeof(int) + 2 * sizeof(kmp_int8) + \
2594 sizeof(kmp_int16) + sizeof(kmp_uint32)) % \
2597 #define KMP_INLINE_ARGV_BYTES \
2598 (2 * CACHE_LINE - ((3 * KMP_PTR_SKIP + 2 * sizeof(int)) % CACHE_LINE))
2600 #define KMP_INLINE_ARGV_ENTRIES (int)(KMP_INLINE_ARGV_BYTES / KMP_PTR_SKIP)
2602 typedef struct KMP_ALIGN_CACHE kmp_base_team {
2603 // Synchronization Data
2604 // ---------------------------------------------------------------------------
2605 KMP_ALIGN_CACHE kmp_ordered_team_t t_ordered;
2606 kmp_balign_team_t t_bar[bs_last_barrier];
2607 std::atomic<int> t_construct; // count of single directive encountered by team
2608 char pad[sizeof(kmp_lock_t)]; // padding to maintain performance on big iron
2610 // [0] - parallel / [1] - worksharing task reduction data shared by taskgroups
2611 std::atomic<void *> t_tg_reduce_data[2]; // to support task modifier
2612 std::atomic<int> t_tg_fini_counter[2]; // sync end of task reductions
2615 // ---------------------------------------------------------------------------
2616 KMP_ALIGN_CACHE int t_master_tid; // tid of master in parent team
2617 int t_master_this_cons; // "this_construct" single counter of master in parent
2619 ident_t *t_ident; // if volatile, have to change too much other crud to
2621 kmp_team_p *t_parent; // parent team
2622 kmp_team_p *t_next_pool; // next free team in the team pool
2623 kmp_disp_t *t_dispatch; // thread's dispatch data
2624 kmp_task_team_t *t_task_team[2]; // Task team struct; switch between 2
2625 kmp_proc_bind_t t_proc_bind; // bind type for par region
2627 kmp_uint64 t_region_time; // region begin timestamp
2628 #endif /* USE_ITT_BUILD */
2630 // Master write, workers read
2631 // --------------------------------------------------------------------------
2632 KMP_ALIGN_CACHE void **t_argv;
2634 int t_nproc; // number of threads in team
2636 launch_t t_invoke; // procedure to launch the microtask
2639 ompt_team_info_t ompt_team_info;
2640 ompt_lw_taskteam_t *ompt_serialized_team_info;
2643 #if KMP_ARCH_X86 || KMP_ARCH_X86_64
2644 kmp_int8 t_fp_control_saved;
2646 kmp_int16 t_x87_fpu_control_word; // FP control regs
2648 #endif /* KMP_ARCH_X86 || KMP_ARCH_X86_64 */
2650 void *t_inline_argv[KMP_INLINE_ARGV_ENTRIES];
2652 KMP_ALIGN_CACHE kmp_info_t **t_threads;
2654 *t_implicit_task_taskdata; // Taskdata for the thread's implicit task
2655 int t_level; // nested parallel level
2657 KMP_ALIGN_CACHE int t_max_argc;
2658 int t_max_nproc; // max threads this team can handle (dynamicly expandable)
2659 int t_serialized; // levels deep of serialized teams
2660 dispatch_shared_info_t *t_disp_buffer; // buffers for dispatch system
2661 int t_id; // team's id, assigned by debugger.
2662 int t_active_level; // nested active parallel level
2663 kmp_r_sched_t t_sched; // run-time schedule for the team
2664 #if KMP_AFFINITY_SUPPORTED
2665 int t_first_place; // first & last place in parent thread's partition.
2666 int t_last_place; // Restore these values to master after par region.
2667 #endif // KMP_AFFINITY_SUPPORTED
2668 int t_display_affinity;
2669 int t_size_changed; // team size was changed?: 0: no, 1: yes, -1: changed via
2670 // omp_set_num_threads() call
2671 omp_allocator_handle_t t_def_allocator; /* default allocator */
2673 // Read/write by workers as well
2674 #if (KMP_ARCH_X86 || KMP_ARCH_X86_64)
2675 // Using CACHE_LINE=64 reduces memory footprint, but causes a big perf
2676 // regression of epcc 'parallel' and 'barrier' on fxe256lin01. This extra
2677 // padding serves to fix the performance of epcc 'parallel' and 'barrier' when
2678 // CACHE_LINE=64. TODO: investigate more and get rid if this padding.
2679 char dummy_padding[1024];
2681 // Internal control stack for additional nested teams.
2682 KMP_ALIGN_CACHE kmp_internal_control_t *t_control_stack_top;
2683 // for SERIALIZED teams nested 2 or more levels deep
2684 // typed flag to store request state of cancellation
2685 std::atomic<kmp_int32> t_cancel_request;
2686 int t_master_active; // save on fork, restore on join
2687 void *t_copypriv_data; // team specific pointer to copyprivate data array
2689 std::atomic<kmp_uint32> t_copyin_counter;
2692 void *t_stack_id; // team specific stack stitching id (for ittnotify)
2693 #endif /* USE_ITT_BUILD */
2696 union KMP_ALIGN_CACHE kmp_team {
2698 double t_align; /* use worst case alignment */
2699 char t_pad[KMP_PAD(kmp_base_team_t, CACHE_LINE)];
2702 typedef union KMP_ALIGN_CACHE kmp_time_global {
2703 double dt_align; /* use worst case alignment */
2704 char dt_pad[KMP_PAD(kmp_base_data_t, CACHE_LINE)];
2706 } kmp_time_global_t;
2708 typedef struct kmp_base_global {
2710 kmp_time_global_t g_time;
2712 /* non cache-aligned */
2713 volatile int g_abort;
2714 volatile int g_done;
2717 enum dynamic_mode g_dynamic_mode;
2718 } kmp_base_global_t;
2720 typedef union KMP_ALIGN_CACHE kmp_global {
2721 kmp_base_global_t g;
2722 double g_align; /* use worst case alignment */
2723 char g_pad[KMP_PAD(kmp_base_global_t, CACHE_LINE)];
2726 typedef struct kmp_base_root {
2727 // TODO: GEH - combine r_active with r_in_parallel then r_active ==
2728 // (r_in_parallel>= 0)
2729 // TODO: GEH - then replace r_active with t_active_levels if we can to reduce
2730 // the synch overhead or keeping r_active
2731 volatile int r_active; /* TRUE if some region in a nest has > 1 thread */
2732 // keeps a count of active parallel regions per root
2733 std::atomic<int> r_in_parallel;
2734 // GEH: This is misnamed, should be r_active_levels
2735 kmp_team_t *r_root_team;
2736 kmp_team_t *r_hot_team;
2737 kmp_info_t *r_uber_thread;
2738 kmp_lock_t r_begin_lock;
2739 volatile int r_begin;
2740 int r_blocktime; /* blocktime for this root and descendants */
2743 typedef union KMP_ALIGN_CACHE kmp_root {
2745 double r_align; /* use worst case alignment */
2746 char r_pad[KMP_PAD(kmp_base_root_t, CACHE_LINE)];
2749 struct fortran_inx_info {
2753 /* ------------------------------------------------------------------------ */
2755 extern int __kmp_settings;
2756 extern int __kmp_duplicate_library_ok;
2758 extern int __kmp_forkjoin_frames;
2759 extern int __kmp_forkjoin_frames_mode;
2761 extern PACKED_REDUCTION_METHOD_T __kmp_force_reduction_method;
2762 extern int __kmp_determ_red;
2765 extern int kmp_a_debug;
2766 extern int kmp_b_debug;
2767 extern int kmp_c_debug;
2768 extern int kmp_d_debug;
2769 extern int kmp_e_debug;
2770 extern int kmp_f_debug;
2771 #endif /* KMP_DEBUG */
2773 /* For debug information logging using rotating buffer */
2774 #define KMP_DEBUG_BUF_LINES_INIT 512
2775 #define KMP_DEBUG_BUF_LINES_MIN 1
2777 #define KMP_DEBUG_BUF_CHARS_INIT 128
2778 #define KMP_DEBUG_BUF_CHARS_MIN 2
2781 __kmp_debug_buf; /* TRUE means use buffer, FALSE means print to stderr */
2782 extern int __kmp_debug_buf_lines; /* How many lines of debug stored in buffer */
2784 __kmp_debug_buf_chars; /* How many characters allowed per line in buffer */
2785 extern int __kmp_debug_buf_atomic; /* TRUE means use atomic update of buffer
2788 extern char *__kmp_debug_buffer; /* Debug buffer itself */
2789 extern std::atomic<int> __kmp_debug_count; /* Counter for number of lines
2790 printed in buffer so far */
2791 extern int __kmp_debug_buf_warn_chars; /* Keep track of char increase
2792 recommended in warnings */
2793 /* end rotating debug buffer */
2796 extern int __kmp_par_range; /* +1 => only go par for constructs in range */
2798 #define KMP_PAR_RANGE_ROUTINE_LEN 1024
2799 extern char __kmp_par_range_routine[KMP_PAR_RANGE_ROUTINE_LEN];
2800 #define KMP_PAR_RANGE_FILENAME_LEN 1024
2801 extern char __kmp_par_range_filename[KMP_PAR_RANGE_FILENAME_LEN];
2802 extern int __kmp_par_range_lb;
2803 extern int __kmp_par_range_ub;
2806 /* For printing out dynamic storage map for threads and teams */
2808 __kmp_storage_map; /* True means print storage map for threads and teams */
2809 extern int __kmp_storage_map_verbose; /* True means storage map includes
2811 extern int __kmp_storage_map_verbose_specified;
2813 #if KMP_ARCH_X86 || KMP_ARCH_X86_64
2814 extern kmp_cpuinfo_t __kmp_cpuinfo;
2817 extern volatile int __kmp_init_serial;
2818 extern volatile int __kmp_init_gtid;
2819 extern volatile int __kmp_init_common;
2820 extern volatile int __kmp_init_middle;
2821 extern volatile int __kmp_init_parallel;
2823 extern volatile int __kmp_init_monitor;
2825 extern volatile int __kmp_init_user_locks;
2826 extern int __kmp_init_counter;
2827 extern int __kmp_root_counter;
2828 extern int __kmp_version;
2830 /* list of address of allocated caches for commons */
2831 extern kmp_cached_addr_t *__kmp_threadpriv_cache_list;
2833 /* Barrier algorithm types and options */
2834 extern kmp_uint32 __kmp_barrier_gather_bb_dflt;
2835 extern kmp_uint32 __kmp_barrier_release_bb_dflt;
2836 extern kmp_bar_pat_e __kmp_barrier_gather_pat_dflt;
2837 extern kmp_bar_pat_e __kmp_barrier_release_pat_dflt;
2838 extern kmp_uint32 __kmp_barrier_gather_branch_bits[bs_last_barrier];
2839 extern kmp_uint32 __kmp_barrier_release_branch_bits[bs_last_barrier];
2840 extern kmp_bar_pat_e __kmp_barrier_gather_pattern[bs_last_barrier];
2841 extern kmp_bar_pat_e __kmp_barrier_release_pattern[bs_last_barrier];
2842 extern char const *__kmp_barrier_branch_bit_env_name[bs_last_barrier];
2843 extern char const *__kmp_barrier_pattern_env_name[bs_last_barrier];
2844 extern char const *__kmp_barrier_type_name[bs_last_barrier];
2845 extern char const *__kmp_barrier_pattern_name[bp_last_bar];
2848 extern kmp_bootstrap_lock_t __kmp_initz_lock; /* control initialization */
2849 extern kmp_bootstrap_lock_t __kmp_forkjoin_lock; /* control fork/join access */
2850 extern kmp_bootstrap_lock_t __kmp_task_team_lock;
2851 extern kmp_bootstrap_lock_t
2852 __kmp_exit_lock; /* exit() is not always thread-safe */
2854 extern kmp_bootstrap_lock_t
2855 __kmp_monitor_lock; /* control monitor thread creation */
2857 extern kmp_bootstrap_lock_t
2858 __kmp_tp_cached_lock; /* used for the hack to allow threadprivate cache and
2859 __kmp_threads expansion to co-exist */
2861 extern kmp_lock_t __kmp_global_lock; /* control OS/global access */
2862 extern kmp_queuing_lock_t __kmp_dispatch_lock; /* control dispatch access */
2863 extern kmp_lock_t __kmp_debug_lock; /* control I/O access for KMP_DEBUG */
2865 extern enum library_type __kmp_library;
2867 extern enum sched_type __kmp_sched; /* default runtime scheduling */
2868 extern enum sched_type __kmp_static; /* default static scheduling method */
2869 extern enum sched_type __kmp_guided; /* default guided scheduling method */
2870 extern enum sched_type __kmp_auto; /* default auto scheduling method */
2871 extern int __kmp_chunk; /* default runtime chunk size */
2873 extern size_t __kmp_stksize; /* stack size per thread */
2875 extern size_t __kmp_monitor_stksize; /* stack size for monitor thread */
2877 extern size_t __kmp_stkoffset; /* stack offset per thread */
2878 extern int __kmp_stkpadding; /* Should we pad root thread(s) stack */
2881 __kmp_malloc_pool_incr; /* incremental size of pool for kmp_malloc() */
2882 extern int __kmp_env_stksize; /* was KMP_STACKSIZE specified? */
2883 extern int __kmp_env_blocktime; /* was KMP_BLOCKTIME specified? */
2884 extern int __kmp_env_checks; /* was KMP_CHECKS specified? */
2885 extern int __kmp_env_consistency_check; // was KMP_CONSISTENCY_CHECK specified?
2886 extern int __kmp_generate_warnings; /* should we issue warnings? */
2887 extern int __kmp_reserve_warn; /* have we issued reserve_threads warning? */
2889 #ifdef DEBUG_SUSPEND
2890 extern int __kmp_suspend_count; /* count inside __kmp_suspend_template() */
2893 extern kmp_int32 __kmp_use_yield;
2894 extern kmp_int32 __kmp_use_yield_exp_set;
2895 extern kmp_uint32 __kmp_yield_init;
2896 extern kmp_uint32 __kmp_yield_next;
2898 /* ------------------------------------------------------------------------- */
2899 extern int __kmp_allThreadsSpecified;
2901 extern size_t __kmp_align_alloc;
2902 /* following data protected by initialization routines */
2903 extern int __kmp_xproc; /* number of processors in the system */
2904 extern int __kmp_avail_proc; /* number of processors available to the process */
2905 extern size_t __kmp_sys_min_stksize; /* system-defined minimum stack size */
2906 extern int __kmp_sys_max_nth; /* system-imposed maximum number of threads */
2907 // maximum total number of concurrently-existing threads on device
2908 extern int __kmp_max_nth;
2909 // maximum total number of concurrently-existing threads in a contention group
2910 extern int __kmp_cg_max_nth;
2911 extern int __kmp_teams_max_nth; // max threads used in a teams construct
2912 extern int __kmp_threads_capacity; /* capacity of the arrays __kmp_threads and
2914 extern int __kmp_dflt_team_nth; /* default number of threads in a parallel
2915 region a la OMP_NUM_THREADS */
2916 extern int __kmp_dflt_team_nth_ub; /* upper bound on "" determined at serial
2918 extern int __kmp_tp_capacity; /* capacity of __kmp_threads if threadprivate is
2920 extern int __kmp_tp_cached; /* whether threadprivate cache has been created
2921 (__kmpc_threadprivate_cached()) */
2922 extern int __kmp_dflt_blocktime; /* number of milliseconds to wait before
2923 blocking (env setting) */
2926 __kmp_monitor_wakeups; /* number of times monitor wakes up per second */
2927 extern int __kmp_bt_intervals; /* number of monitor timestamp intervals before
2930 #ifdef KMP_ADJUST_BLOCKTIME
2931 extern int __kmp_zero_bt; /* whether blocktime has been forced to zero */
2932 #endif /* KMP_ADJUST_BLOCKTIME */
2933 #ifdef KMP_DFLT_NTH_CORES
2934 extern int __kmp_ncores; /* Total number of cores for threads placement */
2936 /* Number of millisecs to delay on abort for Intel(R) VTune(TM) tools */
2937 extern int __kmp_abort_delay;
2939 extern int __kmp_need_register_atfork_specified;
2941 __kmp_need_register_atfork; /* At initialization, call pthread_atfork to
2942 install fork handler */
2943 extern int __kmp_gtid_mode; /* Method of getting gtid, values:
2944 0 - not set, will be set at runtime
2945 1 - using stack search
2946 2 - dynamic TLS (pthread_getspecific(Linux* OS/OS
2947 X*) or TlsGetValue(Windows* OS))
2948 3 - static TLS (__declspec(thread) __kmp_gtid),
2949 Linux* OS .so only. */
2951 __kmp_adjust_gtid_mode; /* If true, adjust method based on #threads */
2952 #ifdef KMP_TDATA_GTID
2953 extern KMP_THREAD_LOCAL int __kmp_gtid;
2955 extern int __kmp_tls_gtid_min; /* #threads below which use sp search for gtid */
2956 extern int __kmp_foreign_tp; // If true, separate TP var for each foreign thread
2957 #if KMP_ARCH_X86 || KMP_ARCH_X86_64
2958 extern int __kmp_inherit_fp_control; // copy fp creg(s) parent->workers at fork
2959 extern kmp_int16 __kmp_init_x87_fpu_control_word; // init thread's FP ctrl reg
2960 extern kmp_uint32 __kmp_init_mxcsr; /* init thread's mxscr */
2961 #endif /* KMP_ARCH_X86 || KMP_ARCH_X86_64 */
2963 // max_active_levels for nested parallelism enabled by default via
2964 // OMP_MAX_ACTIVE_LEVELS, OMP_NESTED, OMP_NUM_THREADS, and OMP_PROC_BIND
2965 extern int __kmp_dflt_max_active_levels;
2966 // Indicates whether value of __kmp_dflt_max_active_levels was already
2967 // explicitly set by OMP_MAX_ACTIVE_LEVELS or OMP_NESTED=false
2968 extern bool __kmp_dflt_max_active_levels_set;
2969 extern int __kmp_dispatch_num_buffers; /* max possible dynamic loops in
2970 concurrent execution per team */
2971 #if KMP_NESTED_HOT_TEAMS
2972 extern int __kmp_hot_teams_mode;
2973 extern int __kmp_hot_teams_max_level;
2977 extern enum clock_function_type __kmp_clock_function;
2978 extern int __kmp_clock_function_param;
2979 #endif /* KMP_OS_LINUX */
2981 #if KMP_MIC_SUPPORTED
2982 extern enum mic_type __kmp_mic_type;
2985 #ifdef USE_LOAD_BALANCE
2986 extern double __kmp_load_balance_interval; // load balance algorithm interval
2987 #endif /* USE_LOAD_BALANCE */
2989 // OpenMP 3.1 - Nested num threads array
2990 typedef struct kmp_nested_nthreads_t {
2994 } kmp_nested_nthreads_t;
2996 extern kmp_nested_nthreads_t __kmp_nested_nth;
2998 #if KMP_USE_ADAPTIVE_LOCKS
3000 // Parameters for the speculative lock backoff system.
3001 struct kmp_adaptive_backoff_params_t {
3002 // Number of soft retries before it counts as a hard retry.
3003 kmp_uint32 max_soft_retries;
3004 // Badness is a bit mask : 0,1,3,7,15,... on each hard failure we move one to
3006 kmp_uint32 max_badness;
3009 extern kmp_adaptive_backoff_params_t __kmp_adaptive_backoff_params;
3011 #if KMP_DEBUG_ADAPTIVE_LOCKS
3012 extern const char *__kmp_speculative_statsfile;
3015 #endif // KMP_USE_ADAPTIVE_LOCKS
3017 extern int __kmp_display_env; /* TRUE or FALSE */
3018 extern int __kmp_display_env_verbose; /* TRUE if OMP_DISPLAY_ENV=VERBOSE */
3019 extern int __kmp_omp_cancellation; /* TRUE or FALSE */
3021 /* ------------------------------------------------------------------------- */
3023 /* the following are protected by the fork/join lock */
3024 /* write: lock read: anytime */
3025 extern kmp_info_t **__kmp_threads; /* Descriptors for the threads */
3026 /* read/write: lock */
3027 extern volatile kmp_team_t *__kmp_team_pool;
3028 extern volatile kmp_info_t *__kmp_thread_pool;
3029 extern kmp_info_t *__kmp_thread_pool_insert_pt;
3031 // total num threads reachable from some root thread including all root threads
3032 extern volatile int __kmp_nth;
3033 /* total number of threads reachable from some root thread including all root
3034 threads, and those in the thread pool */
3035 extern volatile int __kmp_all_nth;
3036 extern std::atomic<int> __kmp_thread_pool_active_nth;
3038 extern kmp_root_t **__kmp_root; /* root of thread hierarchy */
3039 /* end data protected by fork/join lock */
3040 /* ------------------------------------------------------------------------- */
3042 #define __kmp_get_gtid() __kmp_get_global_thread_id()
3043 #define __kmp_entry_gtid() __kmp_get_global_thread_id_reg()
3044 #define __kmp_get_tid() (__kmp_tid_from_gtid(__kmp_get_gtid()))
3045 #define __kmp_get_team() (__kmp_threads[(__kmp_get_gtid())]->th.th_team)
3046 #define __kmp_get_thread() (__kmp_thread_from_gtid(__kmp_get_gtid()))
3048 // AT: Which way is correct?
3049 // AT: 1. nproc = __kmp_threads[ ( gtid ) ] -> th.th_team -> t.t_nproc;
3050 // AT: 2. nproc = __kmp_threads[ ( gtid ) ] -> th.th_team_nproc;
3051 #define __kmp_get_team_num_threads(gtid) \
3052 (__kmp_threads[(gtid)]->th.th_team->t.t_nproc)
3054 static inline bool KMP_UBER_GTID(int gtid) {
3055 KMP_DEBUG_ASSERT(gtid >= KMP_GTID_MIN);
3056 KMP_DEBUG_ASSERT(gtid < __kmp_threads_capacity);
3057 return (gtid >= 0 && __kmp_root[gtid] && __kmp_threads[gtid] &&
3058 __kmp_threads[gtid] == __kmp_root[gtid]->r.r_uber_thread);
3061 static inline int __kmp_tid_from_gtid(int gtid) {
3062 KMP_DEBUG_ASSERT(gtid >= 0);
3063 return __kmp_threads[gtid]->th.th_info.ds.ds_tid;
3066 static inline int __kmp_gtid_from_tid(int tid, const kmp_team_t *team) {
3067 KMP_DEBUG_ASSERT(tid >= 0 && team);
3068 return team->t.t_threads[tid]->th.th_info.ds.ds_gtid;
3071 static inline int __kmp_gtid_from_thread(const kmp_info_t *thr) {
3072 KMP_DEBUG_ASSERT(thr);
3073 return thr->th.th_info.ds.ds_gtid;
3076 static inline kmp_info_t *__kmp_thread_from_gtid(int gtid) {
3077 KMP_DEBUG_ASSERT(gtid >= 0);
3078 return __kmp_threads[gtid];
3081 static inline kmp_team_t *__kmp_team_from_gtid(int gtid) {
3082 KMP_DEBUG_ASSERT(gtid >= 0);
3083 return __kmp_threads[gtid]->th.th_team;
3086 /* ------------------------------------------------------------------------- */
3088 extern kmp_global_t __kmp_global; /* global status */
3090 extern kmp_info_t __kmp_monitor;
3091 // For Debugging Support Library
3092 extern std::atomic<kmp_int32> __kmp_team_counter;
3093 // For Debugging Support Library
3094 extern std::atomic<kmp_int32> __kmp_task_counter;
3097 #define _KMP_GEN_ID(counter) \
3098 (__kmp_debugging ? KMP_ATOMIC_INC(&counter) + 1 : ~0)
3100 #define _KMP_GEN_ID(counter) (~0)
3101 #endif /* USE_DEBUGGER */
3103 #define KMP_GEN_TASK_ID() _KMP_GEN_ID(__kmp_task_counter)
3104 #define KMP_GEN_TEAM_ID() _KMP_GEN_ID(__kmp_team_counter)
3106 /* ------------------------------------------------------------------------ */
3108 extern void __kmp_print_storage_map_gtid(int gtid, void *p1, void *p2,
3109 size_t size, char const *format, ...);
3111 extern void __kmp_serial_initialize(void);
3112 extern void __kmp_middle_initialize(void);
3113 extern void __kmp_parallel_initialize(void);
3115 extern void __kmp_internal_begin(void);
3116 extern void __kmp_internal_end_library(int gtid);
3117 extern void __kmp_internal_end_thread(int gtid);
3118 extern void __kmp_internal_end_atexit(void);
3119 extern void __kmp_internal_end_fini(void);
3120 extern void __kmp_internal_end_dtor(void);
3121 extern void __kmp_internal_end_dest(void *);
3123 extern int __kmp_register_root(int initial_thread);
3124 extern void __kmp_unregister_root(int gtid);
3126 extern int __kmp_ignore_mppbeg(void);
3127 extern int __kmp_ignore_mppend(void);
3129 extern int __kmp_enter_single(int gtid, ident_t *id_ref, int push_ws);
3130 extern void __kmp_exit_single(int gtid);
3132 extern void __kmp_parallel_deo(int *gtid_ref, int *cid_ref, ident_t *loc_ref);
3133 extern void __kmp_parallel_dxo(int *gtid_ref, int *cid_ref, ident_t *loc_ref);
3135 #ifdef USE_LOAD_BALANCE
3136 extern int __kmp_get_load_balance(int);
3139 extern int __kmp_get_global_thread_id(void);
3140 extern int __kmp_get_global_thread_id_reg(void);
3141 extern void __kmp_exit_thread(int exit_status);
3142 extern void __kmp_abort(char const *format, ...);
3143 extern void __kmp_abort_thread(void);
3144 KMP_NORETURN extern void __kmp_abort_process(void);
3145 extern void __kmp_warn(char const *format, ...);
3147 extern void __kmp_set_num_threads(int new_nth, int gtid);
3149 // Returns current thread (pointer to kmp_info_t). Current thread *must* be
3151 static inline kmp_info_t *__kmp_entry_thread() {
3152 int gtid = __kmp_entry_gtid();
3154 return __kmp_threads[gtid];
3157 extern void __kmp_set_max_active_levels(int gtid, int new_max_active_levels);
3158 extern int __kmp_get_max_active_levels(int gtid);
3159 extern int __kmp_get_ancestor_thread_num(int gtid, int level);
3160 extern int __kmp_get_team_size(int gtid, int level);
3161 extern void __kmp_set_schedule(int gtid, kmp_sched_t new_sched, int chunk);
3162 extern void __kmp_get_schedule(int gtid, kmp_sched_t *sched, int *chunk);
3164 extern unsigned short __kmp_get_random(kmp_info_t *thread);
3165 extern void __kmp_init_random(kmp_info_t *thread);
3167 extern kmp_r_sched_t __kmp_get_schedule_global(void);
3168 extern void __kmp_adjust_num_threads(int new_nproc);
3169 extern void __kmp_check_stksize(size_t *val);
3171 extern void *___kmp_allocate(size_t size KMP_SRC_LOC_DECL);
3172 extern void *___kmp_page_allocate(size_t size KMP_SRC_LOC_DECL);
3173 extern void ___kmp_free(void *ptr KMP_SRC_LOC_DECL);
3174 #define __kmp_allocate(size) ___kmp_allocate((size)KMP_SRC_LOC_CURR)
3175 #define __kmp_page_allocate(size) ___kmp_page_allocate((size)KMP_SRC_LOC_CURR)
3176 #define __kmp_free(ptr) ___kmp_free((ptr)KMP_SRC_LOC_CURR)
3179 extern void *___kmp_fast_allocate(kmp_info_t *this_thr,
3180 size_t size KMP_SRC_LOC_DECL);
3181 extern void ___kmp_fast_free(kmp_info_t *this_thr, void *ptr KMP_SRC_LOC_DECL);
3182 extern void __kmp_free_fast_memory(kmp_info_t *this_thr);
3183 extern void __kmp_initialize_fast_memory(kmp_info_t *this_thr);
3184 #define __kmp_fast_allocate(this_thr, size) \
3185 ___kmp_fast_allocate((this_thr), (size)KMP_SRC_LOC_CURR)
3186 #define __kmp_fast_free(this_thr, ptr) \
3187 ___kmp_fast_free((this_thr), (ptr)KMP_SRC_LOC_CURR)
3190 extern void *___kmp_thread_malloc(kmp_info_t *th, size_t size KMP_SRC_LOC_DECL);
3191 extern void *___kmp_thread_calloc(kmp_info_t *th, size_t nelem,
3192 size_t elsize KMP_SRC_LOC_DECL);
3193 extern void *___kmp_thread_realloc(kmp_info_t *th, void *ptr,
3194 size_t size KMP_SRC_LOC_DECL);
3195 extern void ___kmp_thread_free(kmp_info_t *th, void *ptr KMP_SRC_LOC_DECL);
3196 #define __kmp_thread_malloc(th, size) \
3197 ___kmp_thread_malloc((th), (size)KMP_SRC_LOC_CURR)
3198 #define __kmp_thread_calloc(th, nelem, elsize) \
3199 ___kmp_thread_calloc((th), (nelem), (elsize)KMP_SRC_LOC_CURR)
3200 #define __kmp_thread_realloc(th, ptr, size) \
3201 ___kmp_thread_realloc((th), (ptr), (size)KMP_SRC_LOC_CURR)
3202 #define __kmp_thread_free(th, ptr) \
3203 ___kmp_thread_free((th), (ptr)KMP_SRC_LOC_CURR)
3205 #define KMP_INTERNAL_MALLOC(sz) malloc(sz)
3206 #define KMP_INTERNAL_FREE(p) free(p)
3207 #define KMP_INTERNAL_REALLOC(p, sz) realloc((p), (sz))
3208 #define KMP_INTERNAL_CALLOC(n, sz) calloc((n), (sz))
3210 extern void __kmp_push_num_threads(ident_t *loc, int gtid, int num_threads);
3212 extern void __kmp_push_proc_bind(ident_t *loc, int gtid,
3213 kmp_proc_bind_t proc_bind);
3214 extern void __kmp_push_num_teams(ident_t *loc, int gtid, int num_teams,
3217 extern void __kmp_yield();
3219 extern void __kmpc_dispatch_init_4(ident_t *loc, kmp_int32 gtid,
3220 enum sched_type schedule, kmp_int32 lb,
3221 kmp_int32 ub, kmp_int32 st, kmp_int32 chunk);
3222 extern void __kmpc_dispatch_init_4u(ident_t *loc, kmp_int32 gtid,
3223 enum sched_type schedule, kmp_uint32 lb,
3224 kmp_uint32 ub, kmp_int32 st,
3226 extern void __kmpc_dispatch_init_8(ident_t *loc, kmp_int32 gtid,
3227 enum sched_type schedule, kmp_int64 lb,
3228 kmp_int64 ub, kmp_int64 st, kmp_int64 chunk);
3229 extern void __kmpc_dispatch_init_8u(ident_t *loc, kmp_int32 gtid,
3230 enum sched_type schedule, kmp_uint64 lb,
3231 kmp_uint64 ub, kmp_int64 st,
3234 extern int __kmpc_dispatch_next_4(ident_t *loc, kmp_int32 gtid,
3235 kmp_int32 *p_last, kmp_int32 *p_lb,
3236 kmp_int32 *p_ub, kmp_int32 *p_st);
3237 extern int __kmpc_dispatch_next_4u(ident_t *loc, kmp_int32 gtid,
3238 kmp_int32 *p_last, kmp_uint32 *p_lb,
3239 kmp_uint32 *p_ub, kmp_int32 *p_st);
3240 extern int __kmpc_dispatch_next_8(ident_t *loc, kmp_int32 gtid,
3241 kmp_int32 *p_last, kmp_int64 *p_lb,
3242 kmp_int64 *p_ub, kmp_int64 *p_st);
3243 extern int __kmpc_dispatch_next_8u(ident_t *loc, kmp_int32 gtid,
3244 kmp_int32 *p_last, kmp_uint64 *p_lb,
3245 kmp_uint64 *p_ub, kmp_int64 *p_st);
3247 extern void __kmpc_dispatch_fini_4(ident_t *loc, kmp_int32 gtid);
3248 extern void __kmpc_dispatch_fini_8(ident_t *loc, kmp_int32 gtid);
3249 extern void __kmpc_dispatch_fini_4u(ident_t *loc, kmp_int32 gtid);
3250 extern void __kmpc_dispatch_fini_8u(ident_t *loc, kmp_int32 gtid);
3252 #ifdef KMP_GOMP_COMPAT
3254 extern void __kmp_aux_dispatch_init_4(ident_t *loc, kmp_int32 gtid,
3255 enum sched_type schedule, kmp_int32 lb,
3256 kmp_int32 ub, kmp_int32 st,
3257 kmp_int32 chunk, int push_ws);
3258 extern void __kmp_aux_dispatch_init_4u(ident_t *loc, kmp_int32 gtid,
3259 enum sched_type schedule, kmp_uint32 lb,
3260 kmp_uint32 ub, kmp_int32 st,
3261 kmp_int32 chunk, int push_ws);
3262 extern void __kmp_aux_dispatch_init_8(ident_t *loc, kmp_int32 gtid,
3263 enum sched_type schedule, kmp_int64 lb,
3264 kmp_int64 ub, kmp_int64 st,
3265 kmp_int64 chunk, int push_ws);
3266 extern void __kmp_aux_dispatch_init_8u(ident_t *loc, kmp_int32 gtid,
3267 enum sched_type schedule, kmp_uint64 lb,
3268 kmp_uint64 ub, kmp_int64 st,
3269 kmp_int64 chunk, int push_ws);
3270 extern void __kmp_aux_dispatch_fini_chunk_4(ident_t *loc, kmp_int32 gtid);
3271 extern void __kmp_aux_dispatch_fini_chunk_8(ident_t *loc, kmp_int32 gtid);
3272 extern void __kmp_aux_dispatch_fini_chunk_4u(ident_t *loc, kmp_int32 gtid);
3273 extern void __kmp_aux_dispatch_fini_chunk_8u(ident_t *loc, kmp_int32 gtid);
3275 #endif /* KMP_GOMP_COMPAT */
3277 extern kmp_uint32 __kmp_eq_4(kmp_uint32 value, kmp_uint32 checker);
3278 extern kmp_uint32 __kmp_neq_4(kmp_uint32 value, kmp_uint32 checker);
3279 extern kmp_uint32 __kmp_lt_4(kmp_uint32 value, kmp_uint32 checker);
3280 extern kmp_uint32 __kmp_ge_4(kmp_uint32 value, kmp_uint32 checker);
3281 extern kmp_uint32 __kmp_le_4(kmp_uint32 value, kmp_uint32 checker);
3282 extern kmp_uint32 __kmp_wait_4(kmp_uint32 volatile *spinner, kmp_uint32 checker,
3283 kmp_uint32 (*pred)(kmp_uint32, kmp_uint32),
3285 extern void __kmp_wait_4_ptr(void *spinner, kmp_uint32 checker,
3286 kmp_uint32 (*pred)(void *, kmp_uint32), void *obj);
3290 class kmp_flag_oncore;
3291 extern void __kmp_wait_64(kmp_info_t *this_thr, kmp_flag_64 *flag,
3298 extern void __kmp_release_64(kmp_flag_64 *flag);
3300 extern void __kmp_infinite_loop(void);
3302 extern void __kmp_cleanup(void);
3304 #if KMP_HANDLE_SIGNALS
3305 extern int __kmp_handle_signals;
3306 extern void __kmp_install_signals(int parallel_init);
3307 extern void __kmp_remove_signals(void);
3310 extern void __kmp_clear_system_time(void);
3311 extern void __kmp_read_system_time(double *delta);
3313 extern void __kmp_check_stack_overlap(kmp_info_t *thr);
3315 extern void __kmp_expand_host_name(char *buffer, size_t size);
3316 extern void __kmp_expand_file_name(char *result, size_t rlen, char *pattern);
3318 #if KMP_ARCH_X86 || KMP_ARCH_X86_64
3320 __kmp_initialize_system_tick(void); /* Initialize timer tick value */
3324 __kmp_runtime_initialize(void); /* machine specific initialization */
3325 extern void __kmp_runtime_destroy(void);
3327 #if KMP_AFFINITY_SUPPORTED
3328 extern char *__kmp_affinity_print_mask(char *buf, int buf_len,
3329 kmp_affin_mask_t *mask);
3330 extern kmp_str_buf_t *__kmp_affinity_str_buf_mask(kmp_str_buf_t *buf,
3331 kmp_affin_mask_t *mask);
3332 extern void __kmp_affinity_initialize(void);
3333 extern void __kmp_affinity_uninitialize(void);
3334 extern void __kmp_affinity_set_init_mask(
3335 int gtid, int isa_root); /* set affinity according to KMP_AFFINITY */
3336 extern void __kmp_affinity_set_place(int gtid);
3337 extern void __kmp_affinity_determine_capable(const char *env_var);
3338 extern int __kmp_aux_set_affinity(void **mask);
3339 extern int __kmp_aux_get_affinity(void **mask);
3340 extern int __kmp_aux_get_affinity_max_proc();
3341 extern int __kmp_aux_set_affinity_mask_proc(int proc, void **mask);
3342 extern int __kmp_aux_unset_affinity_mask_proc(int proc, void **mask);
3343 extern int __kmp_aux_get_affinity_mask_proc(int proc, void **mask);
3344 extern void __kmp_balanced_affinity(kmp_info_t *th, int team_size);
3346 extern int kmp_set_thread_affinity_mask_initial(void);
3348 #endif /* KMP_AFFINITY_SUPPORTED */
3349 // No need for KMP_AFFINITY_SUPPORTED guard as only one field in the
3350 // format string is for affinity, so platforms that do not support
3351 // affinity can still use the other fields, e.g., %n for num_threads
3352 extern size_t __kmp_aux_capture_affinity(int gtid, const char *format,
3353 kmp_str_buf_t *buffer);
3354 extern void __kmp_aux_display_affinity(int gtid, const char *format);
3356 extern void __kmp_cleanup_hierarchy();
3357 extern void __kmp_get_hierarchy(kmp_uint32 nproc, kmp_bstate_t *thr_bar);
3361 extern int __kmp_futex_determine_capable(void);
3363 #endif // KMP_USE_FUTEX
3365 extern void __kmp_gtid_set_specific(int gtid);
3366 extern int __kmp_gtid_get_specific(void);
3368 extern double __kmp_read_cpu_time(void);
3370 extern int __kmp_read_system_info(struct kmp_sys_info *info);
3373 extern void __kmp_create_monitor(kmp_info_t *th);
3376 extern void *__kmp_launch_thread(kmp_info_t *thr);
3378 extern void __kmp_create_worker(int gtid, kmp_info_t *th, size_t stack_size);
3381 extern int __kmp_still_running(kmp_info_t *th);
3382 extern int __kmp_is_thread_alive(kmp_info_t *th, DWORD *exit_val);
3383 extern void __kmp_free_handle(kmp_thread_t tHandle);
3387 extern void __kmp_reap_monitor(kmp_info_t *th);
3389 extern void __kmp_reap_worker(kmp_info_t *th);
3390 extern void __kmp_terminate_thread(int gtid);
3392 extern int __kmp_try_suspend_mx(kmp_info_t *th);
3393 extern void __kmp_lock_suspend_mx(kmp_info_t *th);
3394 extern void __kmp_unlock_suspend_mx(kmp_info_t *th);
3396 extern void __kmp_suspend_32(int th_gtid, kmp_flag_32 *flag);
3397 extern void __kmp_suspend_64(int th_gtid, kmp_flag_64 *flag);
3398 extern void __kmp_suspend_oncore(int th_gtid, kmp_flag_oncore *flag);
3399 extern void __kmp_resume_32(int target_gtid, kmp_flag_32 *flag);
3400 extern void __kmp_resume_64(int target_gtid, kmp_flag_64 *flag);
3401 extern void __kmp_resume_oncore(int target_gtid, kmp_flag_oncore *flag);
3403 extern void __kmp_elapsed(double *);
3404 extern void __kmp_elapsed_tick(double *);
3406 extern void __kmp_enable(int old_state);
3407 extern void __kmp_disable(int *old_state);
3409 extern void __kmp_thread_sleep(int millis);
3411 extern void __kmp_common_initialize(void);
3412 extern void __kmp_common_destroy(void);
3413 extern void __kmp_common_destroy_gtid(int gtid);
3416 extern void __kmp_register_atfork(void);
3418 extern void __kmp_suspend_initialize(void);
3419 extern void __kmp_suspend_initialize_thread(kmp_info_t *th);
3420 extern void __kmp_suspend_uninitialize_thread(kmp_info_t *th);
3422 extern kmp_info_t *__kmp_allocate_thread(kmp_root_t *root, kmp_team_t *team,
3425 __kmp_allocate_team(kmp_root_t *root, int new_nproc, int max_nproc,
3427 ompt_data_t ompt_parallel_data,
3429 kmp_proc_bind_t proc_bind, kmp_internal_control_t *new_icvs,
3430 int argc USE_NESTED_HOT_ARG(kmp_info_t *thr));
3431 extern void __kmp_free_thread(kmp_info_t *);
3432 extern void __kmp_free_team(kmp_root_t *,
3433 kmp_team_t *USE_NESTED_HOT_ARG(kmp_info_t *));
3434 extern kmp_team_t *__kmp_reap_team(kmp_team_t *);
3436 /* ------------------------------------------------------------------------ */
3438 extern void __kmp_initialize_bget(kmp_info_t *th);
3439 extern void __kmp_finalize_bget(kmp_info_t *th);
3441 KMP_EXPORT void *kmpc_malloc(size_t size);
3442 KMP_EXPORT void *kmpc_aligned_malloc(size_t size, size_t alignment);
3443 KMP_EXPORT void *kmpc_calloc(size_t nelem, size_t elsize);
3444 KMP_EXPORT void *kmpc_realloc(void *ptr, size_t size);
3445 KMP_EXPORT void kmpc_free(void *ptr);
3447 /* declarations for internal use */
3449 extern int __kmp_barrier(enum barrier_type bt, int gtid, int is_split,
3450 size_t reduce_size, void *reduce_data,
3451 void (*reduce)(void *, void *));
3452 extern void __kmp_end_split_barrier(enum barrier_type bt, int gtid);
3453 extern int __kmp_barrier_gomp_cancel(int gtid);
3456 * Tell the fork call which compiler generated the fork call, and therefore how
3457 * to deal with the call.
3459 enum fork_context_e {
3460 fork_context_gnu, /**< Called from GNU generated code, so must not invoke the
3461 microtask internally. */
3462 fork_context_intel, /**< Called from Intel generated code. */
3465 extern int __kmp_fork_call(ident_t *loc, int gtid,
3466 enum fork_context_e fork_context, kmp_int32 argc,
3467 microtask_t microtask, launch_t invoker,
3468 /* TODO: revert workaround for Intel(R) 64 tracker #96 */
3469 #if (KMP_ARCH_ARM || KMP_ARCH_X86_64 || KMP_ARCH_AARCH64) && KMP_OS_LINUX
3476 extern void __kmp_join_call(ident_t *loc, int gtid
3479 enum fork_context_e fork_context
3482 int exit_teams = 0);
3484 extern void __kmp_serialized_parallel(ident_t *id, kmp_int32 gtid);
3485 extern void __kmp_internal_fork(ident_t *id, int gtid, kmp_team_t *team);
3486 extern void __kmp_internal_join(ident_t *id, int gtid, kmp_team_t *team);
3487 extern int __kmp_invoke_task_func(int gtid);
3488 extern void __kmp_run_before_invoked_task(int gtid, int tid,
3489 kmp_info_t *this_thr,
3491 extern void __kmp_run_after_invoked_task(int gtid, int tid,
3492 kmp_info_t *this_thr,
3495 // should never have been exported
3496 KMP_EXPORT int __kmpc_invoke_task_func(int gtid);
3497 extern int __kmp_invoke_teams_master(int gtid);
3498 extern void __kmp_teams_master(int gtid);
3499 extern int __kmp_aux_get_team_num();
3500 extern int __kmp_aux_get_num_teams();
3501 extern void __kmp_save_internal_controls(kmp_info_t *thread);
3502 extern void __kmp_user_set_library(enum library_type arg);
3503 extern void __kmp_aux_set_library(enum library_type arg);
3504 extern void __kmp_aux_set_stacksize(size_t arg);
3505 extern void __kmp_aux_set_blocktime(int arg, kmp_info_t *thread, int tid);
3506 extern void __kmp_aux_set_defaults(char const *str, int len);
3508 /* Functions called from __kmp_aux_env_initialize() in kmp_settings.cpp */
3509 void kmpc_set_blocktime(int arg);
3510 void ompc_set_nested(int flag);
3511 void ompc_set_dynamic(int flag);
3512 void ompc_set_num_threads(int arg);
3514 extern void __kmp_push_current_task_to_thread(kmp_info_t *this_thr,
3515 kmp_team_t *team, int tid);
3516 extern void __kmp_pop_current_task_from_thread(kmp_info_t *this_thr);
3517 extern kmp_task_t *__kmp_task_alloc(ident_t *loc_ref, kmp_int32 gtid,
3518 kmp_tasking_flags_t *flags,
3519 size_t sizeof_kmp_task_t,
3520 size_t sizeof_shareds,
3521 kmp_routine_entry_t task_entry);
3522 extern void __kmp_init_implicit_task(ident_t *loc_ref, kmp_info_t *this_thr,
3523 kmp_team_t *team, int tid,
3525 extern void __kmp_finish_implicit_task(kmp_info_t *this_thr);
3526 extern void __kmp_free_implicit_task(kmp_info_t *this_thr);
3528 extern kmp_event_t *__kmpc_task_allow_completion_event(ident_t *loc_ref,
3531 extern void __kmp_fulfill_event(kmp_event_t *event);
3533 int __kmp_execute_tasks_32(kmp_info_t *thread, kmp_int32 gtid,
3534 kmp_flag_32 *flag, int final_spin,
3535 int *thread_finished,
3538 #endif /* USE_ITT_BUILD */
3539 kmp_int32 is_constrained);
3540 int __kmp_execute_tasks_64(kmp_info_t *thread, kmp_int32 gtid,
3541 kmp_flag_64 *flag, int final_spin,
3542 int *thread_finished,
3545 #endif /* USE_ITT_BUILD */
3546 kmp_int32 is_constrained);
3547 int __kmp_execute_tasks_oncore(kmp_info_t *thread, kmp_int32 gtid,
3548 kmp_flag_oncore *flag, int final_spin,
3549 int *thread_finished,
3552 #endif /* USE_ITT_BUILD */
3553 kmp_int32 is_constrained);
3555 extern void __kmp_free_task_team(kmp_info_t *thread,
3556 kmp_task_team_t *task_team);
3557 extern void __kmp_reap_task_teams(void);
3558 extern void __kmp_wait_to_unref_task_teams(void);
3559 extern void __kmp_task_team_setup(kmp_info_t *this_thr, kmp_team_t *team,
3561 extern void __kmp_task_team_sync(kmp_info_t *this_thr, kmp_team_t *team);
3562 extern void __kmp_task_team_wait(kmp_info_t *this_thr, kmp_team_t *team
3566 #endif /* USE_ITT_BUILD */
3569 extern void __kmp_tasking_barrier(kmp_team_t *team, kmp_info_t *thread,
3572 extern int __kmp_is_address_mapped(void *addr);
3573 extern kmp_uint64 __kmp_hardware_timestamp(void);
3576 extern int __kmp_read_from_file(char const *path, char const *format, ...);
3579 /* ------------------------------------------------------------------------ */
3581 // Assembly routines that have no compiler intrinsic replacement
3584 extern int __kmp_invoke_microtask(microtask_t pkfn, int gtid, int npr, int argc,
3588 void **exit_frame_ptr
3592 /* ------------------------------------------------------------------------ */
3594 KMP_EXPORT void __kmpc_begin(ident_t *, kmp_int32 flags);
3595 KMP_EXPORT void __kmpc_end(ident_t *);
3597 KMP_EXPORT void __kmpc_threadprivate_register_vec(ident_t *, void *data,
3599 kmpc_cctor_vec cctor,
3601 size_t vector_length);
3602 KMP_EXPORT void __kmpc_threadprivate_register(ident_t *, void *data,
3603 kmpc_ctor ctor, kmpc_cctor cctor,
3605 KMP_EXPORT void *__kmpc_threadprivate(ident_t *, kmp_int32 global_tid,
3606 void *data, size_t size);
3608 KMP_EXPORT kmp_int32 __kmpc_global_thread_num(ident_t *);
3609 KMP_EXPORT kmp_int32 __kmpc_global_num_threads(ident_t *);
3610 KMP_EXPORT kmp_int32 __kmpc_bound_thread_num(ident_t *);
3611 KMP_EXPORT kmp_int32 __kmpc_bound_num_threads(ident_t *);
3613 KMP_EXPORT kmp_int32 __kmpc_ok_to_fork(ident_t *);
3614 KMP_EXPORT void __kmpc_fork_call(ident_t *, kmp_int32 nargs,
3615 kmpc_micro microtask, ...);
3617 KMP_EXPORT void __kmpc_serialized_parallel(ident_t *, kmp_int32 global_tid);
3618 KMP_EXPORT void __kmpc_end_serialized_parallel(ident_t *, kmp_int32 global_tid);
3620 KMP_EXPORT void __kmpc_flush(ident_t *);
3621 KMP_EXPORT void __kmpc_barrier(ident_t *, kmp_int32 global_tid);
3622 KMP_EXPORT kmp_int32 __kmpc_master(ident_t *, kmp_int32 global_tid);
3623 KMP_EXPORT void __kmpc_end_master(ident_t *, kmp_int32 global_tid);
3624 KMP_EXPORT void __kmpc_ordered(ident_t *, kmp_int32 global_tid);
3625 KMP_EXPORT void __kmpc_end_ordered(ident_t *, kmp_int32 global_tid);
3626 KMP_EXPORT void __kmpc_critical(ident_t *, kmp_int32 global_tid,
3627 kmp_critical_name *);
3628 KMP_EXPORT void __kmpc_end_critical(ident_t *, kmp_int32 global_tid,
3629 kmp_critical_name *);
3630 KMP_EXPORT void __kmpc_critical_with_hint(ident_t *, kmp_int32 global_tid,
3631 kmp_critical_name *, uint32_t hint);
3633 KMP_EXPORT kmp_int32 __kmpc_barrier_master(ident_t *, kmp_int32 global_tid);
3634 KMP_EXPORT void __kmpc_end_barrier_master(ident_t *, kmp_int32 global_tid);
3636 KMP_EXPORT kmp_int32 __kmpc_barrier_master_nowait(ident_t *,
3637 kmp_int32 global_tid);
3639 KMP_EXPORT kmp_int32 __kmpc_single(ident_t *, kmp_int32 global_tid);
3640 KMP_EXPORT void __kmpc_end_single(ident_t *, kmp_int32 global_tid);
3642 KMP_EXPORT void KMPC_FOR_STATIC_INIT(ident_t *loc, kmp_int32 global_tid,
3643 kmp_int32 schedtype, kmp_int32 *plastiter,
3644 kmp_int *plower, kmp_int *pupper,
3645 kmp_int *pstride, kmp_int incr,
3648 KMP_EXPORT void __kmpc_for_static_fini(ident_t *loc, kmp_int32 global_tid);
3650 KMP_EXPORT void __kmpc_copyprivate(ident_t *loc, kmp_int32 global_tid,
3651 size_t cpy_size, void *cpy_data,
3652 void (*cpy_func)(void *, void *),
3655 extern void KMPC_SET_NUM_THREADS(int arg);
3656 extern void KMPC_SET_DYNAMIC(int flag);
3657 extern void KMPC_SET_NESTED(int flag);
3659 /* OMP 3.0 tasking interface routines */
3660 KMP_EXPORT kmp_int32 __kmpc_omp_task(ident_t *loc_ref, kmp_int32 gtid,
3661 kmp_task_t *new_task);
3662 KMP_EXPORT kmp_task_t *__kmpc_omp_task_alloc(ident_t *loc_ref, kmp_int32 gtid,
3664 size_t sizeof_kmp_task_t,
3665 size_t sizeof_shareds,
3666 kmp_routine_entry_t task_entry);
3667 KMP_EXPORT kmp_task_t *__kmpc_omp_target_task_alloc(ident_t *loc_ref, kmp_int32 gtid,
3669 size_t sizeof_kmp_task_t,
3670 size_t sizeof_shareds,
3671 kmp_routine_entry_t task_entry,
3672 kmp_int64 device_id);
3673 KMP_EXPORT void __kmpc_omp_task_begin_if0(ident_t *loc_ref, kmp_int32 gtid,
3675 KMP_EXPORT void __kmpc_omp_task_complete_if0(ident_t *loc_ref, kmp_int32 gtid,
3677 KMP_EXPORT kmp_int32 __kmpc_omp_task_parts(ident_t *loc_ref, kmp_int32 gtid,
3678 kmp_task_t *new_task);
3679 KMP_EXPORT kmp_int32 __kmpc_omp_taskwait(ident_t *loc_ref, kmp_int32 gtid);
3681 KMP_EXPORT kmp_int32 __kmpc_omp_taskyield(ident_t *loc_ref, kmp_int32 gtid,
3685 void __kmpc_omp_task_begin(ident_t *loc_ref, kmp_int32 gtid, kmp_task_t *task);
3686 void __kmpc_omp_task_complete(ident_t *loc_ref, kmp_int32 gtid,
3688 #endif // TASK_UNUSED
3690 /* ------------------------------------------------------------------------ */
3692 KMP_EXPORT void __kmpc_taskgroup(ident_t *loc, int gtid);
3693 KMP_EXPORT void __kmpc_end_taskgroup(ident_t *loc, int gtid);
3695 KMP_EXPORT kmp_int32 __kmpc_omp_task_with_deps(
3696 ident_t *loc_ref, kmp_int32 gtid, kmp_task_t *new_task, kmp_int32 ndeps,
3697 kmp_depend_info_t *dep_list, kmp_int32 ndeps_noalias,
3698 kmp_depend_info_t *noalias_dep_list);
3699 KMP_EXPORT void __kmpc_omp_wait_deps(ident_t *loc_ref, kmp_int32 gtid,
3701 kmp_depend_info_t *dep_list,
3702 kmp_int32 ndeps_noalias,
3703 kmp_depend_info_t *noalias_dep_list);
3704 extern kmp_int32 __kmp_omp_task(kmp_int32 gtid, kmp_task_t *new_task,
3705 bool serialize_immediate);
3707 KMP_EXPORT kmp_int32 __kmpc_cancel(ident_t *loc_ref, kmp_int32 gtid,
3708 kmp_int32 cncl_kind);
3709 KMP_EXPORT kmp_int32 __kmpc_cancellationpoint(ident_t *loc_ref, kmp_int32 gtid,
3710 kmp_int32 cncl_kind);
3711 KMP_EXPORT kmp_int32 __kmpc_cancel_barrier(ident_t *loc_ref, kmp_int32 gtid);
3712 KMP_EXPORT int __kmp_get_cancellation_status(int cancel_kind);
3714 KMP_EXPORT void __kmpc_proxy_task_completed(kmp_int32 gtid, kmp_task_t *ptask);
3715 KMP_EXPORT void __kmpc_proxy_task_completed_ooo(kmp_task_t *ptask);
3716 KMP_EXPORT void __kmpc_taskloop(ident_t *loc, kmp_int32 gtid, kmp_task_t *task,
3717 kmp_int32 if_val, kmp_uint64 *lb,
3718 kmp_uint64 *ub, kmp_int64 st, kmp_int32 nogroup,
3719 kmp_int32 sched, kmp_uint64 grainsize,
3721 KMP_EXPORT void *__kmpc_task_reduction_init(int gtid, int num_data, void *data);
3722 KMP_EXPORT void *__kmpc_taskred_init(int gtid, int num_data, void *data);
3723 KMP_EXPORT void *__kmpc_task_reduction_get_th_data(int gtid, void *tg, void *d);
3724 KMP_EXPORT void *__kmpc_task_reduction_modifier_init(ident_t *loc, int gtid,
3727 KMP_EXPORT void *__kmpc_taskred_modifier_init(ident_t *loc, int gtid, int is_ws,
3728 int num, void *data);
3729 KMP_EXPORT void __kmpc_task_reduction_modifier_fini(ident_t *loc, int gtid,
3731 KMP_EXPORT kmp_int32 __kmpc_omp_reg_task_with_affinity(
3732 ident_t *loc_ref, kmp_int32 gtid, kmp_task_t *new_task, kmp_int32 naffins,
3733 kmp_task_affinity_info_t *affin_list);
3735 /* Lock interface routines (fast versions with gtid passed in) */
3736 KMP_EXPORT void __kmpc_init_lock(ident_t *loc, kmp_int32 gtid,
3738 KMP_EXPORT void __kmpc_init_nest_lock(ident_t *loc, kmp_int32 gtid,
3740 KMP_EXPORT void __kmpc_destroy_lock(ident_t *loc, kmp_int32 gtid,
3742 KMP_EXPORT void __kmpc_destroy_nest_lock(ident_t *loc, kmp_int32 gtid,
3744 KMP_EXPORT void __kmpc_set_lock(ident_t *loc, kmp_int32 gtid, void **user_lock);
3745 KMP_EXPORT void __kmpc_set_nest_lock(ident_t *loc, kmp_int32 gtid,
3747 KMP_EXPORT void __kmpc_unset_lock(ident_t *loc, kmp_int32 gtid,
3749 KMP_EXPORT void __kmpc_unset_nest_lock(ident_t *loc, kmp_int32 gtid,
3751 KMP_EXPORT int __kmpc_test_lock(ident_t *loc, kmp_int32 gtid, void **user_lock);
3752 KMP_EXPORT int __kmpc_test_nest_lock(ident_t *loc, kmp_int32 gtid,
3755 KMP_EXPORT void __kmpc_init_lock_with_hint(ident_t *loc, kmp_int32 gtid,
3756 void **user_lock, uintptr_t hint);
3757 KMP_EXPORT void __kmpc_init_nest_lock_with_hint(ident_t *loc, kmp_int32 gtid,
3761 /* Interface to fast scalable reduce methods routines */
3763 KMP_EXPORT kmp_int32 __kmpc_reduce_nowait(
3764 ident_t *loc, kmp_int32 global_tid, kmp_int32 num_vars, size_t reduce_size,
3765 void *reduce_data, void (*reduce_func)(void *lhs_data, void *rhs_data),
3766 kmp_critical_name *lck);
3767 KMP_EXPORT void __kmpc_end_reduce_nowait(ident_t *loc, kmp_int32 global_tid,
3768 kmp_critical_name *lck);
3769 KMP_EXPORT kmp_int32 __kmpc_reduce(
3770 ident_t *loc, kmp_int32 global_tid, kmp_int32 num_vars, size_t reduce_size,
3771 void *reduce_data, void (*reduce_func)(void *lhs_data, void *rhs_data),
3772 kmp_critical_name *lck);
3773 KMP_EXPORT void __kmpc_end_reduce(ident_t *loc, kmp_int32 global_tid,
3774 kmp_critical_name *lck);
3776 /* Internal fast reduction routines */
3778 extern PACKED_REDUCTION_METHOD_T __kmp_determine_reduction_method(
3779 ident_t *loc, kmp_int32 global_tid, kmp_int32 num_vars, size_t reduce_size,
3780 void *reduce_data, void (*reduce_func)(void *lhs_data, void *rhs_data),
3781 kmp_critical_name *lck);
3783 // this function is for testing set/get/determine reduce method
3784 KMP_EXPORT kmp_int32 __kmp_get_reduce_method(void);
3786 KMP_EXPORT kmp_uint64 __kmpc_get_taskid();
3787 KMP_EXPORT kmp_uint64 __kmpc_get_parent_taskid();
3790 // missing 'extern "C"' declarations
3792 KMP_EXPORT kmp_int32 __kmpc_in_parallel(ident_t *loc);
3793 KMP_EXPORT void __kmpc_pop_num_threads(ident_t *loc, kmp_int32 global_tid);
3794 KMP_EXPORT void __kmpc_push_num_threads(ident_t *loc, kmp_int32 global_tid,
3795 kmp_int32 num_threads);
3797 KMP_EXPORT void __kmpc_push_proc_bind(ident_t *loc, kmp_int32 global_tid,
3799 KMP_EXPORT void __kmpc_push_num_teams(ident_t *loc, kmp_int32 global_tid,
3800 kmp_int32 num_teams,
3801 kmp_int32 num_threads);
3802 KMP_EXPORT void __kmpc_fork_teams(ident_t *loc, kmp_int32 argc,
3803 kmpc_micro microtask, ...);
3804 struct kmp_dim { // loop bounds info casted to kmp_int64
3805 kmp_int64 lo; // lower
3806 kmp_int64 up; // upper
3807 kmp_int64 st; // stride
3809 KMP_EXPORT void __kmpc_doacross_init(ident_t *loc, kmp_int32 gtid,
3811 const struct kmp_dim *dims);
3812 KMP_EXPORT void __kmpc_doacross_wait(ident_t *loc, kmp_int32 gtid,
3813 const kmp_int64 *vec);
3814 KMP_EXPORT void __kmpc_doacross_post(ident_t *loc, kmp_int32 gtid,
3815 const kmp_int64 *vec);
3816 KMP_EXPORT void __kmpc_doacross_fini(ident_t *loc, kmp_int32 gtid);
3818 KMP_EXPORT void *__kmpc_threadprivate_cached(ident_t *loc, kmp_int32 global_tid,
3819 void *data, size_t size,
3822 // Symbols for MS mutual detection.
3823 extern int _You_must_link_with_exactly_one_OpenMP_library;
3824 extern int _You_must_link_with_Intel_OpenMP_library;
3825 #if KMP_OS_WINDOWS && (KMP_VERSION_MAJOR > 4)
3826 extern int _You_must_link_with_Microsoft_OpenMP_library;
3829 // The routines below are not exported.
3830 // Consider making them 'static' in corresponding source files.
3831 void kmp_threadprivate_insert_private_data(int gtid, void *pc_addr,
3832 void *data_addr, size_t pc_size);
3833 struct private_common *kmp_threadprivate_insert(int gtid, void *pc_addr,
3836 void __kmp_threadprivate_resize_cache(int newCapacity);
3837 void __kmp_cleanup_threadprivate_caches();
3839 // ompc_, kmpc_ entries moved from omp.h.
3841 #define KMPC_CONVENTION __cdecl
3843 #define KMPC_CONVENTION
3847 typedef enum omp_sched_t {
3848 omp_sched_static = 1,
3849 omp_sched_dynamic = 2,
3850 omp_sched_guided = 3,
3853 typedef void *kmp_affinity_mask_t;
3856 KMP_EXPORT void KMPC_CONVENTION ompc_set_max_active_levels(int);
3857 KMP_EXPORT void KMPC_CONVENTION ompc_set_schedule(omp_sched_t, int);
3858 KMP_EXPORT int KMPC_CONVENTION ompc_get_ancestor_thread_num(int);
3859 KMP_EXPORT int KMPC_CONVENTION ompc_get_team_size(int);
3860 KMP_EXPORT int KMPC_CONVENTION
3861 kmpc_set_affinity_mask_proc(int, kmp_affinity_mask_t *);
3862 KMP_EXPORT int KMPC_CONVENTION
3863 kmpc_unset_affinity_mask_proc(int, kmp_affinity_mask_t *);
3864 KMP_EXPORT int KMPC_CONVENTION
3865 kmpc_get_affinity_mask_proc(int, kmp_affinity_mask_t *);
3867 KMP_EXPORT void KMPC_CONVENTION kmpc_set_stacksize(int);
3868 KMP_EXPORT void KMPC_CONVENTION kmpc_set_stacksize_s(size_t);
3869 KMP_EXPORT void KMPC_CONVENTION kmpc_set_library(int);
3870 KMP_EXPORT void KMPC_CONVENTION kmpc_set_defaults(char const *);
3871 KMP_EXPORT void KMPC_CONVENTION kmpc_set_disp_num_buffers(int);
3873 enum kmp_target_offload_kind {
3878 typedef enum kmp_target_offload_kind kmp_target_offload_kind_t;
3879 // Set via OMP_TARGET_OFFLOAD if specified, defaults to tgt_default otherwise
3880 extern kmp_target_offload_kind_t __kmp_target_offload;
3881 extern int __kmpc_get_target_offload();
3883 // Constants used in libomptarget
3884 #define KMP_DEVICE_DEFAULT -1 // This is libomptarget's default device.
3885 #define KMP_HOST_DEVICE -10 // This is what it is in libomptarget, go figure.
3886 #define KMP_DEVICE_ALL -11 // This is libomptarget's "all devices".
3888 // OMP Pause Resource
3890 // The following enum is used both to set the status in __kmp_pause_status, and
3891 // as the internal equivalent of the externally-visible omp_pause_resource_t.
3892 typedef enum kmp_pause_status_t {
3893 kmp_not_paused = 0, // status is not paused, or, requesting resume
3894 kmp_soft_paused = 1, // status is soft-paused, or, requesting soft pause
3895 kmp_hard_paused = 2 // status is hard-paused, or, requesting hard pause
3896 } kmp_pause_status_t;
3898 // This stores the pause state of the runtime
3899 extern kmp_pause_status_t __kmp_pause_status;
3900 extern int __kmpc_pause_resource(kmp_pause_status_t level);
3901 extern int __kmp_pause_resource(kmp_pause_status_t level);
3902 // Soft resume sets __kmp_pause_status, and wakes up all threads.
3903 extern void __kmp_resume_if_soft_paused();
3904 // Hard resume simply resets the status to not paused. Library will appear to
3905 // be uninitialized after hard pause. Let OMP constructs trigger required
3907 static inline void __kmp_resume_if_hard_paused() {
3908 if (__kmp_pause_status == kmp_hard_paused) {
3909 __kmp_pause_status = kmp_not_paused;