19 #include "kmp_debug.h" 32 #define KMP_PAD(type, sz) \ 33 (sizeof(type) + (sz - ((sizeof(type) - 1) % (sz)) - 1)) 34 #define KMP_GTID_DNE (-2) 53 #if KMP_OS_LINUX && defined(KMP_GOMP_COMPAT) 54 #define OMP_LOCK_T_SIZE sizeof(int) 55 #define OMP_NEST_LOCK_T_SIZE sizeof(void *) 57 #define OMP_LOCK_T_SIZE sizeof(void *) 58 #define OMP_NEST_LOCK_T_SIZE sizeof(void *) 64 #define OMP_CRITICAL_SIZE sizeof(void *) 65 #define INTEL_CRITICAL_SIZE 32 68 typedef kmp_uint32 kmp_lock_flags_t;
70 #define kmp_lf_critical_section 1 73 typedef kmp_uint32 kmp_lock_index_t;
77 struct kmp_lock_pool {
78 union kmp_user_lock *next;
79 kmp_lock_index_t index;
82 typedef struct kmp_lock_pool kmp_lock_pool_t;
84 extern void __kmp_validate_locks(
void);
121 struct kmp_base_tas_lock {
123 std::atomic<kmp_int32> poll;
124 kmp_int32 depth_locked;
127 typedef struct kmp_base_tas_lock kmp_base_tas_lock_t;
130 kmp_base_tas_lock_t lk;
131 kmp_lock_pool_t pool;
135 typedef union kmp_tas_lock kmp_tas_lock_t;
139 #define KMP_TAS_LOCK_INITIALIZER(lock) \ 141 { ATOMIC_VAR_INIT(KMP_LOCK_FREE(tas)), 0 } \ 144 extern int __kmp_acquire_tas_lock(kmp_tas_lock_t *lck, kmp_int32 gtid);
145 extern int __kmp_test_tas_lock(kmp_tas_lock_t *lck, kmp_int32 gtid);
146 extern int __kmp_release_tas_lock(kmp_tas_lock_t *lck, kmp_int32 gtid);
147 extern void __kmp_init_tas_lock(kmp_tas_lock_t *lck);
148 extern void __kmp_destroy_tas_lock(kmp_tas_lock_t *lck);
150 extern int __kmp_acquire_nested_tas_lock(kmp_tas_lock_t *lck, kmp_int32 gtid);
151 extern int __kmp_test_nested_tas_lock(kmp_tas_lock_t *lck, kmp_int32 gtid);
152 extern int __kmp_release_nested_tas_lock(kmp_tas_lock_t *lck, kmp_int32 gtid);
153 extern void __kmp_init_nested_tas_lock(kmp_tas_lock_t *lck);
154 extern void __kmp_destroy_nested_tas_lock(kmp_tas_lock_t *lck);
156 #define KMP_LOCK_RELEASED 1 157 #define KMP_LOCK_STILL_HELD 0 158 #define KMP_LOCK_ACQUIRED_FIRST 1 159 #define KMP_LOCK_ACQUIRED_NEXT 0 160 #ifndef KMP_USE_FUTEX 161 #define KMP_USE_FUTEX \ 163 (KMP_ARCH_X86 || KMP_ARCH_X86_64 || KMP_ARCH_ARM || KMP_ARCH_AARCH64)) 178 struct kmp_base_futex_lock {
179 volatile kmp_int32 poll;
182 kmp_int32 depth_locked;
185 typedef struct kmp_base_futex_lock kmp_base_futex_lock_t;
187 union kmp_futex_lock {
188 kmp_base_futex_lock_t lk;
189 kmp_lock_pool_t pool;
194 typedef union kmp_futex_lock kmp_futex_lock_t;
198 #define KMP_FUTEX_LOCK_INITIALIZER(lock) \ 200 { KMP_LOCK_FREE(futex), 0 } \ 203 extern int __kmp_acquire_futex_lock(kmp_futex_lock_t *lck, kmp_int32 gtid);
204 extern int __kmp_test_futex_lock(kmp_futex_lock_t *lck, kmp_int32 gtid);
205 extern int __kmp_release_futex_lock(kmp_futex_lock_t *lck, kmp_int32 gtid);
206 extern void __kmp_init_futex_lock(kmp_futex_lock_t *lck);
207 extern void __kmp_destroy_futex_lock(kmp_futex_lock_t *lck);
209 extern int __kmp_acquire_nested_futex_lock(kmp_futex_lock_t *lck,
211 extern int __kmp_test_nested_futex_lock(kmp_futex_lock_t *lck, kmp_int32 gtid);
212 extern int __kmp_release_nested_futex_lock(kmp_futex_lock_t *lck,
214 extern void __kmp_init_nested_futex_lock(kmp_futex_lock_t *lck);
215 extern void __kmp_destroy_nested_futex_lock(kmp_futex_lock_t *lck);
217 #endif // KMP_USE_FUTEX 228 struct kmp_base_ticket_lock {
230 std::atomic_bool initialized;
231 volatile union kmp_ticket_lock *
self;
235 std::atomic_uint now_serving;
236 std::atomic_int owner_id;
237 std::atomic_int depth_locked;
238 kmp_lock_flags_t flags;
241 struct kmp_base_ticket_lock {
243 std::atomic<bool> initialized;
244 volatile union kmp_ticket_lock *
self;
246 std::atomic<unsigned>
248 std::atomic<unsigned>
250 std::atomic<int> owner_id;
251 std::atomic<int> depth_locked;
252 kmp_lock_flags_t flags;
258 struct kmp_base_ticket_lock;
260 #endif // !__cplusplus 262 typedef struct kmp_base_ticket_lock kmp_base_ticket_lock_t;
264 union KMP_ALIGN_CACHE kmp_ticket_lock {
265 kmp_base_ticket_lock_t
267 kmp_lock_pool_t pool;
269 char lk_pad[KMP_PAD(kmp_base_ticket_lock_t, CACHE_LINE)];
272 typedef union kmp_ticket_lock kmp_ticket_lock_t;
277 #define KMP_TICKET_LOCK_INITIALIZER(lock) \ 280 ATOMIC_VAR_INIT(true) \ 281 , &(lock), NULL, ATOMIC_VAR_INIT(0U), ATOMIC_VAR_INIT(0U), \ 282 ATOMIC_VAR_INIT(0), ATOMIC_VAR_INIT(-1) \ 286 extern int __kmp_acquire_ticket_lock(kmp_ticket_lock_t *lck, kmp_int32 gtid);
287 extern int __kmp_test_ticket_lock(kmp_ticket_lock_t *lck, kmp_int32 gtid);
288 extern int __kmp_test_ticket_lock_with_cheks(kmp_ticket_lock_t *lck,
290 extern int __kmp_release_ticket_lock(kmp_ticket_lock_t *lck, kmp_int32 gtid);
291 extern void __kmp_init_ticket_lock(kmp_ticket_lock_t *lck);
292 extern void __kmp_destroy_ticket_lock(kmp_ticket_lock_t *lck);
294 extern int __kmp_acquire_nested_ticket_lock(kmp_ticket_lock_t *lck,
296 extern int __kmp_test_nested_ticket_lock(kmp_ticket_lock_t *lck,
298 extern int __kmp_release_nested_ticket_lock(kmp_ticket_lock_t *lck,
300 extern void __kmp_init_nested_ticket_lock(kmp_ticket_lock_t *lck);
301 extern void __kmp_destroy_nested_ticket_lock(kmp_ticket_lock_t *lck);
306 #if KMP_USE_ADAPTIVE_LOCKS 308 struct kmp_adaptive_lock_info;
310 typedef struct kmp_adaptive_lock_info kmp_adaptive_lock_info_t;
312 #if KMP_DEBUG_ADAPTIVE_LOCKS 314 struct kmp_adaptive_lock_statistics {
316 kmp_adaptive_lock_info_t *next;
317 kmp_adaptive_lock_info_t *prev;
320 kmp_uint32 successfulSpeculations;
321 kmp_uint32 hardFailedSpeculations;
322 kmp_uint32 softFailedSpeculations;
323 kmp_uint32 nonSpeculativeAcquires;
324 kmp_uint32 nonSpeculativeAcquireAttempts;
325 kmp_uint32 lemmingYields;
328 typedef struct kmp_adaptive_lock_statistics kmp_adaptive_lock_statistics_t;
330 extern void __kmp_print_speculative_stats();
331 extern void __kmp_init_speculative_stats();
333 #endif // KMP_DEBUG_ADAPTIVE_LOCKS 335 struct kmp_adaptive_lock_info {
340 kmp_uint32
volatile badness;
341 kmp_uint32
volatile acquire_attempts;
343 kmp_uint32 max_badness;
344 kmp_uint32 max_soft_retries;
346 #if KMP_DEBUG_ADAPTIVE_LOCKS 347 kmp_adaptive_lock_statistics_t
volatile stats;
351 #endif // KMP_USE_ADAPTIVE_LOCKS 353 struct kmp_base_queuing_lock {
356 volatile union kmp_queuing_lock
374 volatile kmp_int32 owner_id;
375 kmp_int32 depth_locked;
377 kmp_lock_flags_t flags;
380 typedef struct kmp_base_queuing_lock kmp_base_queuing_lock_t;
382 KMP_BUILD_ASSERT(offsetof(kmp_base_queuing_lock_t, tail_id) % 8 == 0);
384 union KMP_ALIGN_CACHE kmp_queuing_lock {
385 kmp_base_queuing_lock_t
387 kmp_lock_pool_t pool;
389 char lk_pad[KMP_PAD(kmp_base_queuing_lock_t, CACHE_LINE)];
392 typedef union kmp_queuing_lock kmp_queuing_lock_t;
394 extern int __kmp_acquire_queuing_lock(kmp_queuing_lock_t *lck, kmp_int32 gtid);
395 extern int __kmp_test_queuing_lock(kmp_queuing_lock_t *lck, kmp_int32 gtid);
396 extern int __kmp_release_queuing_lock(kmp_queuing_lock_t *lck, kmp_int32 gtid);
397 extern void __kmp_init_queuing_lock(kmp_queuing_lock_t *lck);
398 extern void __kmp_destroy_queuing_lock(kmp_queuing_lock_t *lck);
400 extern int __kmp_acquire_nested_queuing_lock(kmp_queuing_lock_t *lck,
402 extern int __kmp_test_nested_queuing_lock(kmp_queuing_lock_t *lck,
404 extern int __kmp_release_nested_queuing_lock(kmp_queuing_lock_t *lck,
406 extern void __kmp_init_nested_queuing_lock(kmp_queuing_lock_t *lck);
407 extern void __kmp_destroy_nested_queuing_lock(kmp_queuing_lock_t *lck);
409 #if KMP_USE_ADAPTIVE_LOCKS 413 struct kmp_base_adaptive_lock {
414 kmp_base_queuing_lock qlk;
415 KMP_ALIGN(CACHE_LINE)
416 kmp_adaptive_lock_info_t
420 typedef struct kmp_base_adaptive_lock kmp_base_adaptive_lock_t;
422 union KMP_ALIGN_CACHE kmp_adaptive_lock {
423 kmp_base_adaptive_lock_t lk;
424 kmp_lock_pool_t pool;
426 char lk_pad[KMP_PAD(kmp_base_adaptive_lock_t, CACHE_LINE)];
428 typedef union kmp_adaptive_lock kmp_adaptive_lock_t;
430 #define GET_QLK_PTR(l) ((kmp_queuing_lock_t *)&(l)->lk.qlk) 432 #endif // KMP_USE_ADAPTIVE_LOCKS 436 struct kmp_base_drdpa_lock {
445 volatile union kmp_drdpa_lock
448 std::atomic<std::atomic<kmp_uint64> *> polls;
449 std::atomic<kmp_uint64> mask;
450 kmp_uint64 cleanup_ticket;
451 std::atomic<kmp_uint64> *old_polls;
452 kmp_uint32 num_polls;
458 std::atomic<kmp_uint64> next_ticket;
473 kmp_uint64 now_serving;
474 volatile kmp_uint32 owner_id;
475 kmp_int32 depth_locked;
476 kmp_lock_flags_t flags;
479 typedef struct kmp_base_drdpa_lock kmp_base_drdpa_lock_t;
481 union KMP_ALIGN_CACHE kmp_drdpa_lock {
482 kmp_base_drdpa_lock_t
484 kmp_lock_pool_t pool;
486 char lk_pad[KMP_PAD(kmp_base_drdpa_lock_t, CACHE_LINE)];
489 typedef union kmp_drdpa_lock kmp_drdpa_lock_t;
491 extern int __kmp_acquire_drdpa_lock(kmp_drdpa_lock_t *lck, kmp_int32 gtid);
492 extern int __kmp_test_drdpa_lock(kmp_drdpa_lock_t *lck, kmp_int32 gtid);
493 extern int __kmp_release_drdpa_lock(kmp_drdpa_lock_t *lck, kmp_int32 gtid);
494 extern void __kmp_init_drdpa_lock(kmp_drdpa_lock_t *lck);
495 extern void __kmp_destroy_drdpa_lock(kmp_drdpa_lock_t *lck);
497 extern int __kmp_acquire_nested_drdpa_lock(kmp_drdpa_lock_t *lck,
499 extern int __kmp_test_nested_drdpa_lock(kmp_drdpa_lock_t *lck, kmp_int32 gtid);
500 extern int __kmp_release_nested_drdpa_lock(kmp_drdpa_lock_t *lck,
502 extern void __kmp_init_nested_drdpa_lock(kmp_drdpa_lock_t *lck);
503 extern void __kmp_destroy_nested_drdpa_lock(kmp_drdpa_lock_t *lck);
517 typedef kmp_ticket_lock_t kmp_bootstrap_lock_t;
519 #define KMP_BOOTSTRAP_LOCK_INITIALIZER(lock) KMP_TICKET_LOCK_INITIALIZER((lock)) 520 #define KMP_BOOTSTRAP_LOCK_INIT(lock) \ 521 kmp_bootstrap_lock_t lock = KMP_TICKET_LOCK_INITIALIZER(lock) 523 static inline int __kmp_acquire_bootstrap_lock(kmp_bootstrap_lock_t *lck) {
524 return __kmp_acquire_ticket_lock(lck, KMP_GTID_DNE);
527 static inline int __kmp_test_bootstrap_lock(kmp_bootstrap_lock_t *lck) {
528 return __kmp_test_ticket_lock(lck, KMP_GTID_DNE);
531 static inline void __kmp_release_bootstrap_lock(kmp_bootstrap_lock_t *lck) {
532 __kmp_release_ticket_lock(lck, KMP_GTID_DNE);
535 static inline void __kmp_init_bootstrap_lock(kmp_bootstrap_lock_t *lck) {
536 __kmp_init_ticket_lock(lck);
539 static inline void __kmp_destroy_bootstrap_lock(kmp_bootstrap_lock_t *lck) {
540 __kmp_destroy_ticket_lock(lck);
551 typedef kmp_ticket_lock_t kmp_lock_t;
553 #define KMP_LOCK_INIT(lock) kmp_lock_t lock = KMP_TICKET_LOCK_INITIALIZER(lock) 555 static inline int __kmp_acquire_lock(kmp_lock_t *lck, kmp_int32 gtid) {
556 return __kmp_acquire_ticket_lock(lck, gtid);
559 static inline int __kmp_test_lock(kmp_lock_t *lck, kmp_int32 gtid) {
560 return __kmp_test_ticket_lock(lck, gtid);
563 static inline void __kmp_release_lock(kmp_lock_t *lck, kmp_int32 gtid) {
564 __kmp_release_ticket_lock(lck, gtid);
567 static inline void __kmp_init_lock(kmp_lock_t *lck) {
568 __kmp_init_ticket_lock(lck);
571 static inline void __kmp_destroy_lock(kmp_lock_t *lck) {
572 __kmp_destroy_ticket_lock(lck);
588 #if KMP_USE_DYNAMIC_LOCK && KMP_USE_TSX 596 #if KMP_USE_ADAPTIVE_LOCKS 598 #endif // KMP_USE_ADAPTIVE_LOCKS 601 typedef enum kmp_lock_kind kmp_lock_kind_t;
603 extern kmp_lock_kind_t __kmp_user_lock_kind;
605 union kmp_user_lock {
608 kmp_futex_lock_t futex;
610 kmp_ticket_lock_t ticket;
611 kmp_queuing_lock_t queuing;
612 kmp_drdpa_lock_t drdpa;
613 #if KMP_USE_ADAPTIVE_LOCKS 614 kmp_adaptive_lock_t adaptive;
615 #endif // KMP_USE_ADAPTIVE_LOCKS 616 kmp_lock_pool_t pool;
619 typedef union kmp_user_lock *kmp_user_lock_p;
621 #if !KMP_USE_DYNAMIC_LOCK 623 extern size_t __kmp_base_user_lock_size;
624 extern size_t __kmp_user_lock_size;
626 extern kmp_int32 (*__kmp_get_user_lock_owner_)(kmp_user_lock_p lck);
628 static inline kmp_int32 __kmp_get_user_lock_owner(kmp_user_lock_p lck) {
629 KMP_DEBUG_ASSERT(__kmp_get_user_lock_owner_ != NULL);
630 return (*__kmp_get_user_lock_owner_)(lck);
633 extern int (*__kmp_acquire_user_lock_with_checks_)(kmp_user_lock_p lck,
636 #if KMP_OS_LINUX && \ 637 (KMP_ARCH_X86 || KMP_ARCH_X86_64 || KMP_ARCH_ARM || KMP_ARCH_AARCH64) 639 #define __kmp_acquire_user_lock_with_checks(lck, gtid) \ 640 if (__kmp_user_lock_kind == lk_tas) { \ 641 if (__kmp_env_consistency_check) { \ 642 char const *const func = "omp_set_lock"; \ 643 if ((sizeof(kmp_tas_lock_t) <= OMP_LOCK_T_SIZE) && \ 644 lck->tas.lk.depth_locked != -1) { \ 645 KMP_FATAL(LockNestableUsedAsSimple, func); \ 647 if ((gtid >= 0) && (lck->tas.lk.poll - 1 == gtid)) { \ 648 KMP_FATAL(LockIsAlreadyOwned, func); \ 651 if (lck->tas.lk.poll != 0 || \ 652 !__kmp_atomic_compare_store_acq(&lck->tas.lk.poll, 0, gtid + 1)) { \ 654 KMP_FSYNC_PREPARE(lck); \ 655 KMP_INIT_YIELD(spins); \ 657 KMP_YIELD_OVERSUB_ELSE_SPIN(spins); \ 658 } while (lck->tas.lk.poll != 0 || !__kmp_atomic_compare_store_acq( \ 659 &lck->tas.lk.poll, 0, gtid + 1)); \ 661 KMP_FSYNC_ACQUIRED(lck); \ 663 KMP_DEBUG_ASSERT(__kmp_acquire_user_lock_with_checks_ != NULL); \ 664 (*__kmp_acquire_user_lock_with_checks_)(lck, gtid); \ 668 static inline int __kmp_acquire_user_lock_with_checks(kmp_user_lock_p lck,
670 KMP_DEBUG_ASSERT(__kmp_acquire_user_lock_with_checks_ != NULL);
671 return (*__kmp_acquire_user_lock_with_checks_)(lck, gtid);
675 extern int (*__kmp_test_user_lock_with_checks_)(kmp_user_lock_p lck,
678 #if KMP_OS_LINUX && \ 679 (KMP_ARCH_X86 || KMP_ARCH_X86_64 || KMP_ARCH_ARM || KMP_ARCH_AARCH64) 681 #include "kmp_i18n.h" 682 extern int __kmp_env_consistency_check;
683 static inline int __kmp_test_user_lock_with_checks(kmp_user_lock_p lck,
685 if (__kmp_user_lock_kind == lk_tas) {
686 if (__kmp_env_consistency_check) {
687 char const *
const func =
"omp_test_lock";
688 if ((
sizeof(kmp_tas_lock_t) <= OMP_LOCK_T_SIZE) &&
689 lck->tas.lk.depth_locked != -1) {
690 KMP_FATAL(LockNestableUsedAsSimple, func);
693 return ((lck->tas.lk.poll == 0) &&
694 __kmp_atomic_compare_store_acq(&lck->tas.lk.poll, 0, gtid + 1));
696 KMP_DEBUG_ASSERT(__kmp_test_user_lock_with_checks_ != NULL);
697 return (*__kmp_test_user_lock_with_checks_)(lck, gtid);
701 static inline int __kmp_test_user_lock_with_checks(kmp_user_lock_p lck,
703 KMP_DEBUG_ASSERT(__kmp_test_user_lock_with_checks_ != NULL);
704 return (*__kmp_test_user_lock_with_checks_)(lck, gtid);
708 extern int (*__kmp_release_user_lock_with_checks_)(kmp_user_lock_p lck,
711 static inline void __kmp_release_user_lock_with_checks(kmp_user_lock_p lck,
713 KMP_DEBUG_ASSERT(__kmp_release_user_lock_with_checks_ != NULL);
714 (*__kmp_release_user_lock_with_checks_)(lck, gtid);
717 extern void (*__kmp_init_user_lock_with_checks_)(kmp_user_lock_p lck);
719 static inline void __kmp_init_user_lock_with_checks(kmp_user_lock_p lck) {
720 KMP_DEBUG_ASSERT(__kmp_init_user_lock_with_checks_ != NULL);
721 (*__kmp_init_user_lock_with_checks_)(lck);
726 extern void (*__kmp_destroy_user_lock_)(kmp_user_lock_p lck);
728 static inline void __kmp_destroy_user_lock(kmp_user_lock_p lck) {
729 KMP_DEBUG_ASSERT(__kmp_destroy_user_lock_ != NULL);
730 (*__kmp_destroy_user_lock_)(lck);
733 extern void (*__kmp_destroy_user_lock_with_checks_)(kmp_user_lock_p lck);
735 static inline void __kmp_destroy_user_lock_with_checks(kmp_user_lock_p lck) {
736 KMP_DEBUG_ASSERT(__kmp_destroy_user_lock_with_checks_ != NULL);
737 (*__kmp_destroy_user_lock_with_checks_)(lck);
740 extern int (*__kmp_acquire_nested_user_lock_with_checks_)(kmp_user_lock_p lck,
743 #if KMP_OS_LINUX && (KMP_ARCH_X86 || KMP_ARCH_X86_64) 745 #define __kmp_acquire_nested_user_lock_with_checks(lck, gtid, depth) \ 746 if (__kmp_user_lock_kind == lk_tas) { \ 747 if (__kmp_env_consistency_check) { \ 748 char const *const func = "omp_set_nest_lock"; \ 749 if ((sizeof(kmp_tas_lock_t) <= OMP_NEST_LOCK_T_SIZE) && \ 750 lck->tas.lk.depth_locked == -1) { \ 751 KMP_FATAL(LockSimpleUsedAsNestable, func); \ 754 if (lck->tas.lk.poll - 1 == gtid) { \ 755 lck->tas.lk.depth_locked += 1; \ 756 *depth = KMP_LOCK_ACQUIRED_NEXT; \ 758 if ((lck->tas.lk.poll != 0) || \ 759 !__kmp_atomic_compare_store_acq(&lck->tas.lk.poll, 0, gtid + 1)) { \ 761 KMP_FSYNC_PREPARE(lck); \ 762 KMP_INIT_YIELD(spins); \ 764 KMP_YIELD_OVERSUB_ELSE_SPIN(spins); \ 766 (lck->tas.lk.poll != 0) || \ 767 !__kmp_atomic_compare_store_acq(&lck->tas.lk.poll, 0, gtid + 1)); \ 769 lck->tas.lk.depth_locked = 1; \ 770 *depth = KMP_LOCK_ACQUIRED_FIRST; \ 772 KMP_FSYNC_ACQUIRED(lck); \ 774 KMP_DEBUG_ASSERT(__kmp_acquire_nested_user_lock_with_checks_ != NULL); \ 775 *depth = (*__kmp_acquire_nested_user_lock_with_checks_)(lck, gtid); \ 780 __kmp_acquire_nested_user_lock_with_checks(kmp_user_lock_p lck, kmp_int32 gtid,
782 KMP_DEBUG_ASSERT(__kmp_acquire_nested_user_lock_with_checks_ != NULL);
783 *depth = (*__kmp_acquire_nested_user_lock_with_checks_)(lck, gtid);
787 extern int (*__kmp_test_nested_user_lock_with_checks_)(kmp_user_lock_p lck,
790 #if KMP_OS_LINUX && (KMP_ARCH_X86 || KMP_ARCH_X86_64) 791 static inline int __kmp_test_nested_user_lock_with_checks(kmp_user_lock_p lck,
793 if (__kmp_user_lock_kind == lk_tas) {
795 if (__kmp_env_consistency_check) {
796 char const *
const func =
"omp_test_nest_lock";
797 if ((
sizeof(kmp_tas_lock_t) <= OMP_NEST_LOCK_T_SIZE) &&
798 lck->tas.lk.depth_locked == -1) {
799 KMP_FATAL(LockSimpleUsedAsNestable, func);
802 KMP_DEBUG_ASSERT(gtid >= 0);
803 if (lck->tas.lk.poll - 1 ==
805 return ++lck->tas.lk.depth_locked;
807 retval = ((lck->tas.lk.poll == 0) &&
808 __kmp_atomic_compare_store_acq(&lck->tas.lk.poll, 0, gtid + 1));
811 lck->tas.lk.depth_locked = 1;
815 KMP_DEBUG_ASSERT(__kmp_test_nested_user_lock_with_checks_ != NULL);
816 return (*__kmp_test_nested_user_lock_with_checks_)(lck, gtid);
820 static inline int __kmp_test_nested_user_lock_with_checks(kmp_user_lock_p lck,
822 KMP_DEBUG_ASSERT(__kmp_test_nested_user_lock_with_checks_ != NULL);
823 return (*__kmp_test_nested_user_lock_with_checks_)(lck, gtid);
827 extern int (*__kmp_release_nested_user_lock_with_checks_)(kmp_user_lock_p lck,
831 __kmp_release_nested_user_lock_with_checks(kmp_user_lock_p lck,
833 KMP_DEBUG_ASSERT(__kmp_release_nested_user_lock_with_checks_ != NULL);
834 return (*__kmp_release_nested_user_lock_with_checks_)(lck, gtid);
837 extern void (*__kmp_init_nested_user_lock_with_checks_)(kmp_user_lock_p lck);
840 __kmp_init_nested_user_lock_with_checks(kmp_user_lock_p lck) {
841 KMP_DEBUG_ASSERT(__kmp_init_nested_user_lock_with_checks_ != NULL);
842 (*__kmp_init_nested_user_lock_with_checks_)(lck);
845 extern void (*__kmp_destroy_nested_user_lock_with_checks_)(kmp_user_lock_p lck);
848 __kmp_destroy_nested_user_lock_with_checks(kmp_user_lock_p lck) {
849 KMP_DEBUG_ASSERT(__kmp_destroy_nested_user_lock_with_checks_ != NULL);
850 (*__kmp_destroy_nested_user_lock_with_checks_)(lck);
866 extern int (*__kmp_is_user_lock_initialized_)(kmp_user_lock_p lck);
870 extern const ident_t *(*__kmp_get_user_lock_location_)(kmp_user_lock_p lck);
872 static inline const ident_t *__kmp_get_user_lock_location(kmp_user_lock_p lck) {
873 if (__kmp_get_user_lock_location_ != NULL) {
874 return (*__kmp_get_user_lock_location_)(lck);
880 extern void (*__kmp_set_user_lock_location_)(kmp_user_lock_p lck,
883 static inline void __kmp_set_user_lock_location(kmp_user_lock_p lck,
885 if (__kmp_set_user_lock_location_ != NULL) {
886 (*__kmp_set_user_lock_location_)(lck, loc);
890 extern kmp_lock_flags_t (*__kmp_get_user_lock_flags_)(kmp_user_lock_p lck);
892 extern void (*__kmp_set_user_lock_flags_)(kmp_user_lock_p lck,
893 kmp_lock_flags_t flags);
895 static inline void __kmp_set_user_lock_flags(kmp_user_lock_p lck,
896 kmp_lock_flags_t flags) {
897 if (__kmp_set_user_lock_flags_ != NULL) {
898 (*__kmp_set_user_lock_flags_)(lck, flags);
903 extern void __kmp_set_user_lock_vptrs(kmp_lock_kind_t user_lock_kind);
906 #define KMP_BIND_USER_LOCK_TEMPLATE(nest, kind, suffix) \ 908 __kmp_acquire##nest##user_lock_with_checks_ = (int (*)( \ 909 kmp_user_lock_p, kmp_int32))__kmp_acquire##nest##kind##_##suffix; \ 910 __kmp_release##nest##user_lock_with_checks_ = (int (*)( \ 911 kmp_user_lock_p, kmp_int32))__kmp_release##nest##kind##_##suffix; \ 912 __kmp_test##nest##user_lock_with_checks_ = (int (*)( \ 913 kmp_user_lock_p, kmp_int32))__kmp_test##nest##kind##_##suffix; \ 914 __kmp_init##nest##user_lock_with_checks_ = \ 915 (void (*)(kmp_user_lock_p))__kmp_init##nest##kind##_##suffix; \ 916 __kmp_destroy##nest##user_lock_with_checks_ = \ 917 (void (*)(kmp_user_lock_p))__kmp_destroy##nest##kind##_##suffix; \ 920 #define KMP_BIND_USER_LOCK(kind) KMP_BIND_USER_LOCK_TEMPLATE(_, kind, lock) 921 #define KMP_BIND_USER_LOCK_WITH_CHECKS(kind) \ 922 KMP_BIND_USER_LOCK_TEMPLATE(_, kind, lock_with_checks) 923 #define KMP_BIND_NESTED_USER_LOCK(kind) \ 924 KMP_BIND_USER_LOCK_TEMPLATE(_nested_, kind, lock) 925 #define KMP_BIND_NESTED_USER_LOCK_WITH_CHECKS(kind) \ 926 KMP_BIND_USER_LOCK_TEMPLATE(_nested_, kind, lock_with_checks) 951 struct kmp_lock_table {
952 kmp_lock_index_t used;
953 kmp_lock_index_t allocated;
954 kmp_user_lock_p *table;
957 typedef struct kmp_lock_table kmp_lock_table_t;
959 extern kmp_lock_table_t __kmp_user_lock_table;
960 extern kmp_user_lock_p __kmp_lock_pool;
962 struct kmp_block_of_locks {
963 struct kmp_block_of_locks *next_block;
967 typedef struct kmp_block_of_locks kmp_block_of_locks_t;
969 extern kmp_block_of_locks_t *__kmp_lock_blocks;
970 extern int __kmp_num_locks_in_block;
972 extern kmp_user_lock_p __kmp_user_lock_allocate(
void **user_lock,
974 kmp_lock_flags_t flags);
975 extern void __kmp_user_lock_free(
void **user_lock, kmp_int32 gtid,
976 kmp_user_lock_p lck);
977 extern kmp_user_lock_p __kmp_lookup_user_lock(
void **user_lock,
979 extern void __kmp_cleanup_user_locks();
981 #define KMP_CHECK_USER_LOCK_INIT() \ 983 if (!TCR_4(__kmp_init_user_locks)) { \ 984 __kmp_acquire_bootstrap_lock(&__kmp_initz_lock); \ 985 if (!TCR_4(__kmp_init_user_locks)) { \ 986 TCW_4(__kmp_init_user_locks, TRUE); \ 988 __kmp_release_bootstrap_lock(&__kmp_initz_lock); \ 992 #endif // KMP_USE_DYNAMIC_LOCK 997 #if KMP_USE_DYNAMIC_LOCK 1035 #define KMP_USE_INLINED_TAS \ 1036 (KMP_OS_LINUX && (KMP_ARCH_X86 || KMP_ARCH_X86_64 || KMP_ARCH_ARM)) && 1 1037 #define KMP_USE_INLINED_FUTEX KMP_USE_FUTEX && 0 1044 #define KMP_FOREACH_D_LOCK(m, a) m(tas, a) m(futex, a) m(hle, a) m(rtm_spin, a) 1045 #define KMP_FOREACH_I_LOCK(m, a) \ 1046 m(ticket, a) m(queuing, a) m(adaptive, a) m(drdpa, a) m(rtm_queuing, a) \ 1047 m(nested_tas, a) m(nested_futex, a) m(nested_ticket, a) \ 1048 m(nested_queuing, a) m(nested_drdpa, a) 1050 #define KMP_FOREACH_D_LOCK(m, a) m(tas, a) m(hle, a) m(rtm_spin, a) 1051 #define KMP_FOREACH_I_LOCK(m, a) \ 1052 m(ticket, a) m(queuing, a) m(adaptive, a) m(drdpa, a) m(rtm_queuing, a) \ 1053 m(nested_tas, a) m(nested_ticket, a) m(nested_queuing, a) \ 1055 #endif // KMP_USE_FUTEX 1056 #define KMP_LAST_D_LOCK lockseq_rtm_spin 1059 #define KMP_FOREACH_D_LOCK(m, a) m(tas, a) m(futex, a) 1060 #define KMP_FOREACH_I_LOCK(m, a) \ 1061 m(ticket, a) m(queuing, a) m(drdpa, a) m(nested_tas, a) m(nested_futex, a) \ 1062 m(nested_ticket, a) m(nested_queuing, a) m(nested_drdpa, a) 1063 #define KMP_LAST_D_LOCK lockseq_futex 1065 #define KMP_FOREACH_D_LOCK(m, a) m(tas, a) 1066 #define KMP_FOREACH_I_LOCK(m, a) \ 1067 m(ticket, a) m(queuing, a) m(drdpa, a) m(nested_tas, a) m(nested_ticket, a) \ 1068 m(nested_queuing, a) m(nested_drdpa, a) 1069 #define KMP_LAST_D_LOCK lockseq_tas 1070 #endif // KMP_USE_FUTEX 1071 #endif // KMP_USE_TSX 1074 #define KMP_LOCK_SHIFT \ 1075 8 // number of low bits to be used as tag for direct locks 1076 #define KMP_FIRST_D_LOCK lockseq_tas 1077 #define KMP_FIRST_I_LOCK lockseq_ticket 1078 #define KMP_LAST_I_LOCK lockseq_nested_drdpa 1079 #define KMP_NUM_I_LOCKS \ 1080 (locktag_nested_drdpa + 1) // number of indirect lock types 1083 typedef kmp_uint32 kmp_dyna_lock_t;
1088 lockseq_indirect = 0,
1089 #define expand_seq(l, a) lockseq_##l, 1090 KMP_FOREACH_D_LOCK(expand_seq, 0) KMP_FOREACH_I_LOCK(expand_seq, 0)
1092 } kmp_dyna_lockseq_t;
1096 #define expand_tag(l, a) locktag_##l, 1097 KMP_FOREACH_I_LOCK(expand_tag, 0)
1099 } kmp_indirect_locktag_t;
1102 #define KMP_IS_D_LOCK(seq) \ 1103 ((seq) >= KMP_FIRST_D_LOCK && (seq) <= KMP_LAST_D_LOCK) 1104 #define KMP_IS_I_LOCK(seq) \ 1105 ((seq) >= KMP_FIRST_I_LOCK && (seq) <= KMP_LAST_I_LOCK) 1106 #define KMP_GET_I_TAG(seq) (kmp_indirect_locktag_t)((seq)-KMP_FIRST_I_LOCK) 1107 #define KMP_GET_D_TAG(seq) ((seq) << 1 | 1) 1111 #define expand_tag(l, a) locktag_##l = KMP_GET_D_TAG(lockseq_##l), 1112 KMP_FOREACH_D_LOCK(expand_tag, 0)
1114 } kmp_direct_locktag_t;
1118 kmp_user_lock_p lock;
1119 kmp_indirect_locktag_t type;
1120 } kmp_indirect_lock_t;
1124 extern void (*__kmp_direct_init[])(kmp_dyna_lock_t *, kmp_dyna_lockseq_t);
1125 extern void (**__kmp_direct_destroy)(kmp_dyna_lock_t *);
1126 extern int (**__kmp_direct_set)(kmp_dyna_lock_t *, kmp_int32);
1127 extern int (**__kmp_direct_unset)(kmp_dyna_lock_t *, kmp_int32);
1128 extern int (**__kmp_direct_test)(kmp_dyna_lock_t *, kmp_int32);
1132 extern void (*__kmp_indirect_init[])(kmp_user_lock_p);
1133 extern void (**__kmp_indirect_destroy)(kmp_user_lock_p);
1134 extern int (**__kmp_indirect_set)(kmp_user_lock_p, kmp_int32);
1135 extern int (**__kmp_indirect_unset)(kmp_user_lock_p, kmp_int32);
1136 extern int (**__kmp_indirect_test)(kmp_user_lock_p, kmp_int32);
1139 #define KMP_EXTRACT_D_TAG(l) \ 1140 (*((kmp_dyna_lock_t *)(l)) & ((1 << KMP_LOCK_SHIFT) - 1) & \ 1141 -(*((kmp_dyna_lock_t *)(l)) & 1)) 1144 #define KMP_EXTRACT_I_INDEX(l) (*(kmp_lock_index_t *)(l) >> 1) 1148 #define KMP_D_LOCK_FUNC(l, op) __kmp_direct_##op[KMP_EXTRACT_D_TAG(l)] 1152 #define KMP_I_LOCK_FUNC(l, op) \ 1153 __kmp_indirect_##op[((kmp_indirect_lock_t *)(l))->type] 1156 #define KMP_INIT_D_LOCK(l, seq) \ 1157 __kmp_direct_init[KMP_GET_D_TAG(seq)]((kmp_dyna_lock_t *)l, seq) 1160 #define KMP_INIT_I_LOCK(l, seq) \ 1161 __kmp_direct_init[0]((kmp_dyna_lock_t *)(l), seq) 1164 #define KMP_LOCK_FREE(type) (locktag_##type) 1167 #define KMP_LOCK_BUSY(v, type) ((v) << KMP_LOCK_SHIFT | locktag_##type) 1170 #define KMP_LOCK_STRIP(v) ((v) >> KMP_LOCK_SHIFT) 1174 extern void __kmp_init_dynamic_user_locks();
1177 extern kmp_indirect_lock_t *
1178 __kmp_allocate_indirect_lock(
void **, kmp_int32, kmp_indirect_locktag_t);
1181 extern void __kmp_cleanup_indirect_user_locks();
1184 extern kmp_dyna_lockseq_t __kmp_user_lock_seq;
1187 extern void (*__kmp_indirect_set_location[KMP_NUM_I_LOCKS])(kmp_user_lock_p,
1189 #define KMP_SET_I_LOCK_LOCATION(lck, loc) \ 1191 if (__kmp_indirect_set_location[(lck)->type] != NULL) \ 1192 __kmp_indirect_set_location[(lck)->type]((lck)->lock, loc); \ 1196 extern void (*__kmp_indirect_set_flags[KMP_NUM_I_LOCKS])(kmp_user_lock_p,
1198 #define KMP_SET_I_LOCK_FLAGS(lck, flag) \ 1200 if (__kmp_indirect_set_flags[(lck)->type] != NULL) \ 1201 __kmp_indirect_set_flags[(lck)->type]((lck)->lock, flag); \ 1205 extern const ident_t *(*__kmp_indirect_get_location[KMP_NUM_I_LOCKS])(
1207 #define KMP_GET_I_LOCK_LOCATION(lck) \ 1208 (__kmp_indirect_get_location[(lck)->type] != NULL \ 1209 ? __kmp_indirect_get_location[(lck)->type]((lck)->lock) \ 1213 extern kmp_lock_flags_t (*__kmp_indirect_get_flags[KMP_NUM_I_LOCKS])(
1215 #define KMP_GET_I_LOCK_FLAGS(lck) \ 1216 (__kmp_indirect_get_flags[(lck)->type] != NULL \ 1217 ? __kmp_indirect_get_flags[(lck)->type]((lck)->lock) \ 1220 #define KMP_I_LOCK_CHUNK \ 1221 1024 // number of kmp_indirect_lock_t objects to be allocated together 1224 typedef struct kmp_indirect_lock_table {
1225 kmp_indirect_lock_t **table;
1226 kmp_lock_index_t size;
1227 kmp_lock_index_t next;
1228 } kmp_indirect_lock_table_t;
1230 extern kmp_indirect_lock_table_t __kmp_i_lock_table;
1233 #define KMP_GET_I_LOCK(index) \ 1234 (*(__kmp_i_lock_table.table + (index) / KMP_I_LOCK_CHUNK) + \ 1235 (index) % KMP_I_LOCK_CHUNK) 1240 extern int __kmp_num_locks_in_block;
1243 #define KMP_LOOKUP_I_LOCK(l) \ 1244 ((OMP_LOCK_T_SIZE < sizeof(void *)) ? KMP_GET_I_LOCK(KMP_EXTRACT_I_INDEX(l)) \ 1245 : *((kmp_indirect_lock_t **)(l))) 1248 extern kmp_int32 __kmp_get_user_lock_owner(kmp_user_lock_p, kmp_uint32);
1250 #else // KMP_USE_DYNAMIC_LOCK 1252 #define KMP_LOCK_BUSY(v, type) (v) 1253 #define KMP_LOCK_FREE(type) 0 1254 #define KMP_LOCK_STRIP(v) (v) 1256 #endif // KMP_USE_DYNAMIC_LOCK 1261 kmp_uint32 max_backoff;
1262 kmp_uint32 min_tick;
1266 extern kmp_backoff_t __kmp_spin_backoff_params;
1269 extern void __kmp_spin_backoff(kmp_backoff_t *);
1273 #endif // __cplusplus