16 #include "kmp_stats.h"
17 #include "kmp_wait_release.h"
18 #include "kmp_taskdeps.h"
21 #include "ompt-specific.h"
24 #include "tsan_annotations.h"
27 static void __kmp_enable_tasking(kmp_task_team_t *task_team,
28 kmp_info_t *this_thr);
29 static void __kmp_alloc_task_deque(kmp_info_t *thread,
30 kmp_thread_data_t *thread_data);
31 static int __kmp_realloc_task_threads_data(kmp_info_t *thread,
32 kmp_task_team_t *task_team);
33 static void __kmp_bottom_half_finish_proxy(kmp_int32 gtid, kmp_task_t *ptask);
35 #ifdef BUILD_TIED_TASK_STACK
44 static void __kmp_trace_task_stack(kmp_int32 gtid,
45 kmp_thread_data_t *thread_data,
46 int threshold,
char *location) {
47 kmp_task_stack_t *task_stack = &thread_data->td.td_susp_tied_tasks;
48 kmp_taskdata_t **stack_top = task_stack->ts_top;
49 kmp_int32 entries = task_stack->ts_entries;
50 kmp_taskdata_t *tied_task;
54 (
"__kmp_trace_task_stack(start): location = %s, gtid = %d, entries = %d, "
55 "first_block = %p, stack_top = %p \n",
56 location, gtid, entries, task_stack->ts_first_block, stack_top));
58 KMP_DEBUG_ASSERT(stack_top != NULL);
59 KMP_DEBUG_ASSERT(entries > 0);
61 while (entries != 0) {
62 KMP_DEBUG_ASSERT(stack_top != &task_stack->ts_first_block.sb_block[0]);
64 if (entries & TASK_STACK_INDEX_MASK == 0) {
65 kmp_stack_block_t *stack_block = (kmp_stack_block_t *)(stack_top);
67 stack_block = stack_block->sb_prev;
68 stack_top = &stack_block->sb_block[TASK_STACK_BLOCK_SIZE];
75 tied_task = *stack_top;
77 KMP_DEBUG_ASSERT(tied_task != NULL);
78 KMP_DEBUG_ASSERT(tied_task->td_flags.tasktype == TASK_TIED);
81 (
"__kmp_trace_task_stack(%s): gtid=%d, entry=%d, "
82 "stack_top=%p, tied_task=%p\n",
83 location, gtid, entries, stack_top, tied_task));
85 KMP_DEBUG_ASSERT(stack_top == &task_stack->ts_first_block.sb_block[0]);
88 (
"__kmp_trace_task_stack(exit): location = %s, gtid = %d\n",
98 static void __kmp_init_task_stack(kmp_int32 gtid,
99 kmp_thread_data_t *thread_data) {
100 kmp_task_stack_t *task_stack = &thread_data->td.td_susp_tied_tasks;
101 kmp_stack_block_t *first_block;
104 first_block = &task_stack->ts_first_block;
105 task_stack->ts_top = (kmp_taskdata_t **)first_block;
106 memset((
void *)first_block,
'\0',
107 TASK_STACK_BLOCK_SIZE *
sizeof(kmp_taskdata_t *));
110 task_stack->ts_entries = TASK_STACK_EMPTY;
111 first_block->sb_next = NULL;
112 first_block->sb_prev = NULL;
119 static void __kmp_free_task_stack(kmp_int32 gtid,
120 kmp_thread_data_t *thread_data) {
121 kmp_task_stack_t *task_stack = &thread_data->td.td_susp_tied_tasks;
122 kmp_stack_block_t *stack_block = &task_stack->ts_first_block;
124 KMP_DEBUG_ASSERT(task_stack->ts_entries == TASK_STACK_EMPTY);
126 while (stack_block != NULL) {
127 kmp_stack_block_t *next_block = (stack_block) ? stack_block->sb_next : NULL;
129 stack_block->sb_next = NULL;
130 stack_block->sb_prev = NULL;
131 if (stack_block != &task_stack->ts_first_block) {
132 __kmp_thread_free(thread,
135 stack_block = next_block;
138 task_stack->ts_entries = 0;
139 task_stack->ts_top = NULL;
148 static void __kmp_push_task_stack(kmp_int32 gtid, kmp_info_t *thread,
149 kmp_taskdata_t *tied_task) {
151 kmp_thread_data_t *thread_data =
152 &thread->th.th_task_team->tt.tt_threads_data[__kmp_tid_from_gtid(gtid)];
153 kmp_task_stack_t *task_stack = &thread_data->td.td_susp_tied_tasks;
155 if (tied_task->td_flags.team_serial || tied_task->td_flags.tasking_ser) {
159 KMP_DEBUG_ASSERT(tied_task->td_flags.tasktype == TASK_TIED);
160 KMP_DEBUG_ASSERT(task_stack->ts_top != NULL);
163 (
"__kmp_push_task_stack(enter): GTID: %d; THREAD: %p; TASK: %p\n",
164 gtid, thread, tied_task));
166 *(task_stack->ts_top) = tied_task;
169 task_stack->ts_top++;
170 task_stack->ts_entries++;
172 if (task_stack->ts_entries & TASK_STACK_INDEX_MASK == 0) {
174 kmp_stack_block_t *stack_block =
175 (kmp_stack_block_t *)(task_stack->ts_top - TASK_STACK_BLOCK_SIZE);
178 if (stack_block->sb_next !=
180 task_stack->ts_top = &stack_block->sb_next->sb_block[0];
182 kmp_stack_block_t *new_block = (kmp_stack_block_t *)__kmp_thread_calloc(
183 thread,
sizeof(kmp_stack_block_t));
185 task_stack->ts_top = &new_block->sb_block[0];
186 stack_block->sb_next = new_block;
187 new_block->sb_prev = stack_block;
188 new_block->sb_next = NULL;
192 (
"__kmp_push_task_stack(): GTID: %d; TASK: %p; Alloc new block: %p\n",
193 gtid, tied_task, new_block));
196 KA_TRACE(20, (
"__kmp_push_task_stack(exit): GTID: %d; TASK: %p\n", gtid,
207 static void __kmp_pop_task_stack(kmp_int32 gtid, kmp_info_t *thread,
208 kmp_taskdata_t *ending_task) {
210 kmp_thread_data_t *thread_data =
211 &thread->th.th_task_team->tt_threads_data[__kmp_tid_from_gtid(gtid)];
212 kmp_task_stack_t *task_stack = &thread_data->td.td_susp_tied_tasks;
213 kmp_taskdata_t *tied_task;
215 if (ending_task->td_flags.team_serial || ending_task->td_flags.tasking_ser) {
220 KMP_DEBUG_ASSERT(task_stack->ts_top != NULL);
221 KMP_DEBUG_ASSERT(task_stack->ts_entries > 0);
223 KA_TRACE(20, (
"__kmp_pop_task_stack(enter): GTID: %d; THREAD: %p\n", gtid,
227 if (task_stack->ts_entries & TASK_STACK_INDEX_MASK == 0) {
228 kmp_stack_block_t *stack_block = (kmp_stack_block_t *)(task_stack->ts_top);
230 stack_block = stack_block->sb_prev;
231 task_stack->ts_top = &stack_block->sb_block[TASK_STACK_BLOCK_SIZE];
235 task_stack->ts_top--;
236 task_stack->ts_entries--;
238 tied_task = *(task_stack->ts_top);
240 KMP_DEBUG_ASSERT(tied_task != NULL);
241 KMP_DEBUG_ASSERT(tied_task->td_flags.tasktype == TASK_TIED);
242 KMP_DEBUG_ASSERT(tied_task == ending_task);
244 KA_TRACE(20, (
"__kmp_pop_task_stack(exit): GTID: %d; TASK: %p\n", gtid,
253 static bool __kmp_task_is_allowed(
int gtid,
const kmp_int32 is_constrained,
254 const kmp_taskdata_t *tasknew,
255 const kmp_taskdata_t *taskcurr) {
256 if (is_constrained && (tasknew->td_flags.tiedness == TASK_TIED)) {
260 kmp_taskdata_t *current = taskcurr->td_last_tied;
261 KMP_DEBUG_ASSERT(current != NULL);
263 if (current->td_flags.tasktype == TASK_EXPLICIT ||
264 current->td_taskwait_thread > 0) {
265 kmp_int32 level = current->td_level;
266 kmp_taskdata_t *parent = tasknew->td_parent;
267 while (parent != current && parent->td_level > level) {
269 parent = parent->td_parent;
270 KMP_DEBUG_ASSERT(parent != NULL);
272 if (parent != current)
277 kmp_depnode_t *node = tasknew->td_depnode;
278 if (UNLIKELY(node && (node->dn.mtx_num_locks > 0))) {
279 for (
int i = 0; i < node->dn.mtx_num_locks; ++i) {
280 KMP_DEBUG_ASSERT(node->dn.mtx_locks[i] != NULL);
281 if (__kmp_test_lock(node->dn.mtx_locks[i], gtid))
284 for (
int j = i - 1; j >= 0; --j)
285 __kmp_release_lock(node->dn.mtx_locks[j], gtid);
289 node->dn.mtx_num_locks = -node->dn.mtx_num_locks;
298 static void __kmp_realloc_task_deque(kmp_info_t *thread,
299 kmp_thread_data_t *thread_data) {
300 kmp_int32 size = TASK_DEQUE_SIZE(thread_data->td);
301 KMP_DEBUG_ASSERT(TCR_4(thread_data->td.td_deque_ntasks) == size);
302 kmp_int32 new_size = 2 * size;
304 KE_TRACE(10, (
"__kmp_realloc_task_deque: T#%d reallocating deque[from %d to "
305 "%d] for thread_data %p\n",
306 __kmp_gtid_from_thread(thread), size, new_size, thread_data));
308 kmp_taskdata_t **new_deque =
309 (kmp_taskdata_t **)__kmp_allocate(new_size *
sizeof(kmp_taskdata_t *));
312 for (i = thread_data->td.td_deque_head, j = 0; j < size;
313 i = (i + 1) & TASK_DEQUE_MASK(thread_data->td), j++)
314 new_deque[j] = thread_data->td.td_deque[i];
316 __kmp_free(thread_data->td.td_deque);
318 thread_data->td.td_deque_head = 0;
319 thread_data->td.td_deque_tail = size;
320 thread_data->td.td_deque = new_deque;
321 thread_data->td.td_deque_size = new_size;
325 static kmp_int32 __kmp_push_task(kmp_int32 gtid, kmp_task_t *task) {
326 kmp_info_t *thread = __kmp_threads[gtid];
327 kmp_taskdata_t *taskdata = KMP_TASK_TO_TASKDATA(task);
330 if (taskdata->td_flags.hidden_helper && !KMP_HIDDEN_HELPER_THREAD(gtid)) {
331 gtid = KMP_GTID_TO_SHADOW_GTID(gtid);
332 thread = __kmp_threads[gtid];
335 kmp_task_team_t *task_team = thread->th.th_task_team;
336 kmp_int32 tid = __kmp_tid_from_gtid(gtid);
337 kmp_thread_data_t *thread_data;
340 (
"__kmp_push_task: T#%d trying to push task %p.\n", gtid, taskdata));
342 if (UNLIKELY(taskdata->td_flags.tiedness == TASK_UNTIED)) {
345 kmp_int32 counter = 1 + KMP_ATOMIC_INC(&taskdata->td_untied_count);
346 KMP_DEBUG_USE_VAR(counter);
349 (
"__kmp_push_task: T#%d untied_count (%d) incremented for task %p\n",
350 gtid, counter, taskdata));
354 if (UNLIKELY(taskdata->td_flags.task_serial)) {
355 KA_TRACE(20, (
"__kmp_push_task: T#%d team serialized; returning "
356 "TASK_NOT_PUSHED for task %p\n",
358 return TASK_NOT_PUSHED;
363 KMP_DEBUG_ASSERT(__kmp_tasking_mode != tskm_immediate_exec);
364 if (UNLIKELY(!KMP_TASKING_ENABLED(task_team))) {
365 __kmp_enable_tasking(task_team, thread);
367 KMP_DEBUG_ASSERT(TCR_4(task_team->tt.tt_found_tasks) == TRUE);
368 KMP_DEBUG_ASSERT(TCR_PTR(task_team->tt.tt_threads_data) != NULL);
371 thread_data = &task_team->tt.tt_threads_data[tid];
376 if (UNLIKELY(thread_data->td.td_deque == NULL)) {
377 __kmp_alloc_task_deque(thread, thread_data);
382 if (TCR_4(thread_data->td.td_deque_ntasks) >=
383 TASK_DEQUE_SIZE(thread_data->td)) {
384 if (__kmp_enable_task_throttling &&
385 __kmp_task_is_allowed(gtid, __kmp_task_stealing_constraint, taskdata,
386 thread->th.th_current_task)) {
387 KA_TRACE(20, (
"__kmp_push_task: T#%d deque is full; returning "
388 "TASK_NOT_PUSHED for task %p\n",
390 return TASK_NOT_PUSHED;
392 __kmp_acquire_bootstrap_lock(&thread_data->td.td_deque_lock);
394 if (TCR_4(thread_data->td.td_deque_ntasks) >=
395 TASK_DEQUE_SIZE(thread_data->td)) {
397 __kmp_realloc_task_deque(thread, thread_data);
403 __kmp_acquire_bootstrap_lock(&thread_data->td.td_deque_lock);
405 if (TCR_4(thread_data->td.td_deque_ntasks) >=
406 TASK_DEQUE_SIZE(thread_data->td)) {
407 if (__kmp_enable_task_throttling &&
408 __kmp_task_is_allowed(gtid, __kmp_task_stealing_constraint, taskdata,
409 thread->th.th_current_task)) {
410 __kmp_release_bootstrap_lock(&thread_data->td.td_deque_lock);
411 KA_TRACE(20, (
"__kmp_push_task: T#%d deque is full on 2nd check; "
412 "returning TASK_NOT_PUSHED for task %p\n",
414 return TASK_NOT_PUSHED;
417 __kmp_realloc_task_deque(thread, thread_data);
422 KMP_DEBUG_ASSERT(TCR_4(thread_data->td.td_deque_ntasks) <
423 TASK_DEQUE_SIZE(thread_data->td));
425 thread_data->td.td_deque[thread_data->td.td_deque_tail] =
428 thread_data->td.td_deque_tail =
429 (thread_data->td.td_deque_tail + 1) & TASK_DEQUE_MASK(thread_data->td);
430 TCW_4(thread_data->td.td_deque_ntasks,
431 TCR_4(thread_data->td.td_deque_ntasks) + 1);
432 KMP_FSYNC_RELEASING(thread->th.th_current_task);
433 KMP_FSYNC_RELEASING(taskdata);
434 KA_TRACE(20, (
"__kmp_push_task: T#%d returning TASK_SUCCESSFULLY_PUSHED: "
435 "task=%p ntasks=%d head=%u tail=%u\n",
436 gtid, taskdata, thread_data->td.td_deque_ntasks,
437 thread_data->td.td_deque_head, thread_data->td.td_deque_tail));
439 __kmp_release_bootstrap_lock(&thread_data->td.td_deque_lock);
442 if (taskdata->td_flags.hidden_helper) {
444 __kmp_hidden_helper_worker_thread_signal();
447 return TASK_SUCCESSFULLY_PUSHED;
454 void __kmp_pop_current_task_from_thread(kmp_info_t *this_thr) {
455 KF_TRACE(10, (
"__kmp_pop_current_task_from_thread(enter): T#%d "
456 "this_thread=%p, curtask=%p, "
457 "curtask_parent=%p\n",
458 0, this_thr, this_thr->th.th_current_task,
459 this_thr->th.th_current_task->td_parent));
461 this_thr->th.th_current_task = this_thr->th.th_current_task->td_parent;
463 KF_TRACE(10, (
"__kmp_pop_current_task_from_thread(exit): T#%d "
464 "this_thread=%p, curtask=%p, "
465 "curtask_parent=%p\n",
466 0, this_thr, this_thr->th.th_current_task,
467 this_thr->th.th_current_task->td_parent));
476 void __kmp_push_current_task_to_thread(kmp_info_t *this_thr, kmp_team_t *team,
480 KF_TRACE(10, (
"__kmp_push_current_task_to_thread(enter): T#%d this_thread=%p "
483 tid, this_thr, this_thr->th.th_current_task,
484 team->t.t_implicit_task_taskdata[tid].td_parent));
486 KMP_DEBUG_ASSERT(this_thr != NULL);
489 if (this_thr->th.th_current_task != &team->t.t_implicit_task_taskdata[0]) {
490 team->t.t_implicit_task_taskdata[0].td_parent =
491 this_thr->th.th_current_task;
492 this_thr->th.th_current_task = &team->t.t_implicit_task_taskdata[0];
495 team->t.t_implicit_task_taskdata[tid].td_parent =
496 team->t.t_implicit_task_taskdata[0].td_parent;
497 this_thr->th.th_current_task = &team->t.t_implicit_task_taskdata[tid];
500 KF_TRACE(10, (
"__kmp_push_current_task_to_thread(exit): T#%d this_thread=%p "
503 tid, this_thr, this_thr->th.th_current_task,
504 team->t.t_implicit_task_taskdata[tid].td_parent));
512 static void __kmp_task_start(kmp_int32 gtid, kmp_task_t *task,
513 kmp_taskdata_t *current_task) {
514 kmp_taskdata_t *taskdata = KMP_TASK_TO_TASKDATA(task);
515 kmp_info_t *thread = __kmp_threads[gtid];
518 (
"__kmp_task_start(enter): T#%d starting task %p: current_task=%p\n",
519 gtid, taskdata, current_task));
521 KMP_DEBUG_ASSERT(taskdata->td_flags.tasktype == TASK_EXPLICIT);
526 current_task->td_flags.executing = 0;
529 #ifdef BUILD_TIED_TASK_STACK
530 if (taskdata->td_flags.tiedness == TASK_TIED) {
531 __kmp_push_task_stack(gtid, thread, taskdata);
536 thread->th.th_current_task = taskdata;
538 KMP_DEBUG_ASSERT(taskdata->td_flags.started == 0 ||
539 taskdata->td_flags.tiedness == TASK_UNTIED);
540 KMP_DEBUG_ASSERT(taskdata->td_flags.executing == 0 ||
541 taskdata->td_flags.tiedness == TASK_UNTIED);
542 taskdata->td_flags.started = 1;
543 taskdata->td_flags.executing = 1;
544 KMP_DEBUG_ASSERT(taskdata->td_flags.complete == 0);
545 KMP_DEBUG_ASSERT(taskdata->td_flags.freed == 0);
552 KA_TRACE(10, (
"__kmp_task_start(exit): T#%d task=%p\n", gtid, taskdata));
563 static inline void __ompt_task_init(kmp_taskdata_t *task,
int tid) {
565 task->ompt_task_info.task_data.value = 0;
566 task->ompt_task_info.frame.exit_frame = ompt_data_none;
567 task->ompt_task_info.frame.enter_frame = ompt_data_none;
568 task->ompt_task_info.frame.exit_frame_flags =
569 ompt_frame_runtime | ompt_frame_framepointer;
570 task->ompt_task_info.frame.enter_frame_flags =
571 ompt_frame_runtime | ompt_frame_framepointer;
576 static inline void __ompt_task_start(kmp_task_t *task,
577 kmp_taskdata_t *current_task,
579 kmp_taskdata_t *taskdata = KMP_TASK_TO_TASKDATA(task);
580 ompt_task_status_t status = ompt_task_switch;
581 if (__kmp_threads[gtid]->th.ompt_thread_info.ompt_task_yielded) {
582 status = ompt_task_yield;
583 __kmp_threads[gtid]->th.ompt_thread_info.ompt_task_yielded = 0;
586 if (ompt_enabled.ompt_callback_task_schedule) {
587 ompt_callbacks.ompt_callback(ompt_callback_task_schedule)(
588 &(current_task->ompt_task_info.task_data), status,
589 &(taskdata->ompt_task_info.task_data));
591 taskdata->ompt_task_info.scheduling_parent = current_task;
596 static inline void __ompt_task_finish(kmp_task_t *task,
597 kmp_taskdata_t *resumed_task,
598 ompt_task_status_t status) {
599 if (ompt_enabled.ompt_callback_task_schedule) {
600 kmp_taskdata_t *taskdata = KMP_TASK_TO_TASKDATA(task);
601 if (__kmp_omp_cancellation && taskdata->td_taskgroup &&
602 taskdata->td_taskgroup->cancel_request == cancel_taskgroup) {
603 status = ompt_task_cancel;
607 ompt_callbacks.ompt_callback(ompt_callback_task_schedule)(
608 &(taskdata->ompt_task_info.task_data), status,
609 (resumed_task ? &(resumed_task->ompt_task_info.task_data) : NULL));
615 static void __kmpc_omp_task_begin_if0_template(
ident_t *loc_ref, kmp_int32 gtid,
618 void *return_address) {
619 kmp_taskdata_t *taskdata = KMP_TASK_TO_TASKDATA(task);
620 kmp_taskdata_t *current_task = __kmp_threads[gtid]->th.th_current_task;
622 KA_TRACE(10, (
"__kmpc_omp_task_begin_if0(enter): T#%d loc=%p task=%p "
624 gtid, loc_ref, taskdata, current_task));
626 if (UNLIKELY(taskdata->td_flags.tiedness == TASK_UNTIED)) {
629 kmp_int32 counter = 1 + KMP_ATOMIC_INC(&taskdata->td_untied_count);
630 KMP_DEBUG_USE_VAR(counter);
631 KA_TRACE(20, (
"__kmpc_omp_task_begin_if0: T#%d untied_count (%d) "
632 "incremented for task %p\n",
633 gtid, counter, taskdata));
636 taskdata->td_flags.task_serial =
638 __kmp_task_start(gtid, task, current_task);
642 if (current_task->ompt_task_info.frame.enter_frame.ptr == NULL) {
643 current_task->ompt_task_info.frame.enter_frame.ptr =
644 taskdata->ompt_task_info.frame.exit_frame.ptr = frame_address;
645 current_task->ompt_task_info.frame.enter_frame_flags =
646 taskdata->ompt_task_info.frame.exit_frame_flags =
647 ompt_frame_application | ompt_frame_framepointer;
649 if (ompt_enabled.ompt_callback_task_create) {
650 ompt_task_info_t *parent_info = &(current_task->ompt_task_info);
651 ompt_callbacks.ompt_callback(ompt_callback_task_create)(
652 &(parent_info->task_data), &(parent_info->frame),
653 &(taskdata->ompt_task_info.task_data),
654 ompt_task_explicit | TASK_TYPE_DETAILS_FORMAT(taskdata), 0,
657 __ompt_task_start(task, current_task, gtid);
661 KA_TRACE(10, (
"__kmpc_omp_task_begin_if0(exit): T#%d loc=%p task=%p,\n", gtid,
667 static void __kmpc_omp_task_begin_if0_ompt(
ident_t *loc_ref, kmp_int32 gtid,
670 void *return_address) {
671 __kmpc_omp_task_begin_if0_template<true>(loc_ref, gtid, task, frame_address,
682 void __kmpc_omp_task_begin_if0(
ident_t *loc_ref, kmp_int32 gtid,
685 if (UNLIKELY(ompt_enabled.enabled)) {
686 OMPT_STORE_RETURN_ADDRESS(gtid);
687 __kmpc_omp_task_begin_if0_ompt(loc_ref, gtid, task,
688 OMPT_GET_FRAME_ADDRESS(1),
689 OMPT_LOAD_RETURN_ADDRESS(gtid));
693 __kmpc_omp_task_begin_if0_template<false>(loc_ref, gtid, task, NULL, NULL);
699 void __kmpc_omp_task_begin(
ident_t *loc_ref, kmp_int32 gtid, kmp_task_t *task) {
700 kmp_taskdata_t *current_task = __kmp_threads[gtid]->th.th_current_task;
704 (
"__kmpc_omp_task_begin(enter): T#%d loc=%p task=%p current_task=%p\n",
705 gtid, loc_ref, KMP_TASK_TO_TASKDATA(task), current_task));
707 __kmp_task_start(gtid, task, current_task);
709 KA_TRACE(10, (
"__kmpc_omp_task_begin(exit): T#%d loc=%p task=%p,\n", gtid,
710 loc_ref, KMP_TASK_TO_TASKDATA(task)));
720 static void __kmp_free_task(kmp_int32 gtid, kmp_taskdata_t *taskdata,
721 kmp_info_t *thread) {
722 KA_TRACE(30, (
"__kmp_free_task: T#%d freeing data from task %p\n", gtid,
726 KMP_DEBUG_ASSERT(taskdata->td_flags.tasktype == TASK_EXPLICIT);
727 KMP_DEBUG_ASSERT(taskdata->td_flags.executing == 0);
728 KMP_DEBUG_ASSERT(taskdata->td_flags.complete == 1);
729 KMP_DEBUG_ASSERT(taskdata->td_flags.freed == 0);
730 KMP_DEBUG_ASSERT(taskdata->td_allocated_child_tasks == 0 ||
731 taskdata->td_flags.task_serial == 1);
732 KMP_DEBUG_ASSERT(taskdata->td_incomplete_child_tasks == 0);
734 taskdata->td_flags.freed = 1;
735 ANNOTATE_HAPPENS_BEFORE(taskdata);
738 __kmp_fast_free(thread, taskdata);
740 __kmp_thread_free(thread, taskdata);
742 KA_TRACE(20, (
"__kmp_free_task: T#%d freed task %p\n", gtid, taskdata));
751 static void __kmp_free_task_and_ancestors(kmp_int32 gtid,
752 kmp_taskdata_t *taskdata,
753 kmp_info_t *thread) {
756 kmp_int32 team_serial =
757 (taskdata->td_flags.team_serial || taskdata->td_flags.tasking_ser) &&
758 !taskdata->td_flags.proxy;
759 KMP_DEBUG_ASSERT(taskdata->td_flags.tasktype == TASK_EXPLICIT);
761 kmp_int32 children = KMP_ATOMIC_DEC(&taskdata->td_allocated_child_tasks) - 1;
762 KMP_DEBUG_ASSERT(children >= 0);
765 while (children == 0) {
766 kmp_taskdata_t *parent_taskdata = taskdata->td_parent;
768 KA_TRACE(20, (
"__kmp_free_task_and_ancestors(enter): T#%d task %p complete "
769 "and freeing itself\n",
773 __kmp_free_task(gtid, taskdata, thread);
775 taskdata = parent_taskdata;
781 if (taskdata->td_flags.tasktype == TASK_IMPLICIT) {
782 if (taskdata->td_dephash) {
783 int children = KMP_ATOMIC_LD_ACQ(&taskdata->td_incomplete_child_tasks);
784 kmp_tasking_flags_t flags_old = taskdata->td_flags;
785 if (children == 0 && flags_old.complete == 1) {
786 kmp_tasking_flags_t flags_new = flags_old;
787 flags_new.complete = 0;
788 if (KMP_COMPARE_AND_STORE_ACQ32(
789 RCAST(kmp_int32 *, &taskdata->td_flags),
790 *RCAST(kmp_int32 *, &flags_old),
791 *RCAST(kmp_int32 *, &flags_new))) {
792 KA_TRACE(100, (
"__kmp_free_task_and_ancestors: T#%d cleans "
793 "dephash of implicit task %p\n",
796 __kmp_dephash_free_entries(thread, taskdata->td_dephash);
803 children = KMP_ATOMIC_DEC(&taskdata->td_allocated_child_tasks) - 1;
804 KMP_DEBUG_ASSERT(children >= 0);
808 20, (
"__kmp_free_task_and_ancestors(exit): T#%d task %p has %d children; "
809 "not freeing it yet\n",
810 gtid, taskdata, children));
823 static void __kmp_task_finish(kmp_int32 gtid, kmp_task_t *task,
824 kmp_taskdata_t *resumed_task) {
825 kmp_taskdata_t *taskdata = KMP_TASK_TO_TASKDATA(task);
826 kmp_info_t *thread = __kmp_threads[gtid];
827 kmp_task_team_t *task_team =
828 thread->th.th_task_team;
829 kmp_int32 children = 0;
831 KA_TRACE(10, (
"__kmp_task_finish(enter): T#%d finishing task %p and resuming "
833 gtid, taskdata, resumed_task));
835 KMP_DEBUG_ASSERT(taskdata->td_flags.tasktype == TASK_EXPLICIT);
838 #ifdef BUILD_TIED_TASK_STACK
839 if (taskdata->td_flags.tiedness == TASK_TIED) {
840 __kmp_pop_task_stack(gtid, thread, taskdata);
844 if (UNLIKELY(taskdata->td_flags.tiedness == TASK_UNTIED)) {
847 kmp_int32 counter = KMP_ATOMIC_DEC(&taskdata->td_untied_count) - 1;
850 (
"__kmp_task_finish: T#%d untied_count (%d) decremented for task %p\n",
851 gtid, counter, taskdata));
855 if (resumed_task == NULL) {
856 KMP_DEBUG_ASSERT(taskdata->td_flags.task_serial);
857 resumed_task = taskdata->td_parent;
860 thread->th.th_current_task = resumed_task;
861 resumed_task->td_flags.executing = 1;
862 KA_TRACE(10, (
"__kmp_task_finish(exit): T#%d partially done task %p, "
863 "resuming task %p\n",
864 gtid, taskdata, resumed_task));
872 (taskdata->td_flags.tasking_ser || taskdata->td_flags.task_serial) ==
873 taskdata->td_flags.task_serial);
874 if (taskdata->td_flags.task_serial) {
875 if (resumed_task == NULL) {
876 resumed_task = taskdata->td_parent;
880 KMP_DEBUG_ASSERT(resumed_task !=
890 if (UNLIKELY(taskdata->td_flags.destructors_thunk)) {
891 kmp_routine_entry_t destr_thunk = task->data1.destructors;
892 KMP_ASSERT(destr_thunk);
893 destr_thunk(gtid, task);
896 KMP_DEBUG_ASSERT(taskdata->td_flags.complete == 0);
897 KMP_DEBUG_ASSERT(taskdata->td_flags.started == 1);
898 KMP_DEBUG_ASSERT(taskdata->td_flags.freed == 0);
901 if (UNLIKELY(taskdata->td_flags.detachable == TASK_DETACHABLE)) {
902 if (taskdata->td_allow_completion_event.type ==
903 KMP_EVENT_ALLOW_COMPLETION) {
905 __kmp_acquire_tas_lock(&taskdata->td_allow_completion_event.lock, gtid);
906 if (taskdata->td_allow_completion_event.type ==
907 KMP_EVENT_ALLOW_COMPLETION) {
909 KMP_DEBUG_ASSERT(taskdata->td_flags.executing == 1);
910 taskdata->td_flags.executing = 0;
917 __ompt_task_finish(task, resumed_task, ompt_task_detach);
923 taskdata->td_flags.proxy = TASK_PROXY;
926 __kmp_release_tas_lock(&taskdata->td_allow_completion_event.lock, gtid);
931 taskdata->td_flags.complete = 1;
936 __ompt_task_finish(task, resumed_task, ompt_task_complete);
941 if (!(taskdata->td_flags.team_serial || taskdata->td_flags.tasking_ser) ||
942 taskdata->td_flags.detachable == TASK_DETACHABLE ||
943 taskdata->td_flags.hidden_helper) {
946 KMP_ATOMIC_DEC(&taskdata->td_parent->td_incomplete_child_tasks) - 1;
947 KMP_DEBUG_ASSERT(children >= 0);
948 if (taskdata->td_taskgroup)
949 KMP_ATOMIC_DEC(&taskdata->td_taskgroup->count);
950 __kmp_release_deps(gtid, taskdata);
951 }
else if (task_team && task_team->tt.tt_found_proxy_tasks) {
954 __kmp_release_deps(gtid, taskdata);
960 KMP_DEBUG_ASSERT(taskdata->td_flags.executing == 1);
961 taskdata->td_flags.executing = 0;
965 20, (
"__kmp_task_finish: T#%d finished task %p, %d incomplete children\n",
966 gtid, taskdata, children));
972 thread->th.th_current_task = resumed_task;
974 __kmp_free_task_and_ancestors(gtid, taskdata, thread);
978 resumed_task->td_flags.executing = 1;
981 10, (
"__kmp_task_finish(exit): T#%d finished task %p, resuming task %p\n",
982 gtid, taskdata, resumed_task));
988 static void __kmpc_omp_task_complete_if0_template(
ident_t *loc_ref,
991 KA_TRACE(10, (
"__kmpc_omp_task_complete_if0(enter): T#%d loc=%p task=%p\n",
992 gtid, loc_ref, KMP_TASK_TO_TASKDATA(task)));
993 KMP_DEBUG_ASSERT(gtid >= 0);
995 __kmp_task_finish<ompt>(gtid, task, NULL);
997 KA_TRACE(10, (
"__kmpc_omp_task_complete_if0(exit): T#%d loc=%p task=%p\n",
998 gtid, loc_ref, KMP_TASK_TO_TASKDATA(task)));
1002 ompt_frame_t *ompt_frame;
1003 __ompt_get_task_info_internal(0, NULL, NULL, &ompt_frame, NULL, NULL);
1004 ompt_frame->enter_frame = ompt_data_none;
1005 ompt_frame->enter_frame_flags =
1006 ompt_frame_runtime | ompt_frame_framepointer;
1015 void __kmpc_omp_task_complete_if0_ompt(
ident_t *loc_ref, kmp_int32 gtid,
1017 __kmpc_omp_task_complete_if0_template<true>(loc_ref, gtid, task);
1026 void __kmpc_omp_task_complete_if0(
ident_t *loc_ref, kmp_int32 gtid,
1029 if (UNLIKELY(ompt_enabled.enabled)) {
1030 __kmpc_omp_task_complete_if0_ompt(loc_ref, gtid, task);
1034 __kmpc_omp_task_complete_if0_template<false>(loc_ref, gtid, task);
1040 void __kmpc_omp_task_complete(
ident_t *loc_ref, kmp_int32 gtid,
1042 KA_TRACE(10, (
"__kmpc_omp_task_complete(enter): T#%d loc=%p task=%p\n", gtid,
1043 loc_ref, KMP_TASK_TO_TASKDATA(task)));
1045 __kmp_task_finish<false>(gtid, task,
1048 KA_TRACE(10, (
"__kmpc_omp_task_complete(exit): T#%d loc=%p task=%p\n", gtid,
1049 loc_ref, KMP_TASK_TO_TASKDATA(task)));
1065 void __kmp_init_implicit_task(
ident_t *loc_ref, kmp_info_t *this_thr,
1066 kmp_team_t *team,
int tid,
int set_curr_task) {
1067 kmp_taskdata_t *task = &team->t.t_implicit_task_taskdata[tid];
1071 (
"__kmp_init_implicit_task(enter): T#:%d team=%p task=%p, reinit=%s\n",
1072 tid, team, task, set_curr_task ?
"TRUE" :
"FALSE"));
1074 task->td_task_id = KMP_GEN_TASK_ID();
1075 task->td_team = team;
1078 task->td_ident = loc_ref;
1079 task->td_taskwait_ident = NULL;
1080 task->td_taskwait_counter = 0;
1081 task->td_taskwait_thread = 0;
1083 task->td_flags.tiedness = TASK_TIED;
1084 task->td_flags.tasktype = TASK_IMPLICIT;
1085 task->td_flags.proxy = TASK_FULL;
1088 task->td_flags.task_serial = 1;
1089 task->td_flags.tasking_ser = (__kmp_tasking_mode == tskm_immediate_exec);
1090 task->td_flags.team_serial = (team->t.t_serialized) ? 1 : 0;
1092 task->td_flags.started = 1;
1093 task->td_flags.executing = 1;
1094 task->td_flags.complete = 0;
1095 task->td_flags.freed = 0;
1097 task->td_depnode = NULL;
1098 task->td_last_tied = task;
1099 task->td_allow_completion_event.type = KMP_EVENT_UNINITIALIZED;
1101 if (set_curr_task) {
1102 KMP_ATOMIC_ST_REL(&task->td_incomplete_child_tasks, 0);
1104 KMP_ATOMIC_ST_REL(&task->td_allocated_child_tasks, 0);
1105 task->td_taskgroup = NULL;
1106 task->td_dephash = NULL;
1107 __kmp_push_current_task_to_thread(this_thr, team, tid);
1109 KMP_DEBUG_ASSERT(task->td_incomplete_child_tasks == 0);
1110 KMP_DEBUG_ASSERT(task->td_allocated_child_tasks == 0);
1114 if (UNLIKELY(ompt_enabled.enabled))
1115 __ompt_task_init(task, tid);
1118 KF_TRACE(10, (
"__kmp_init_implicit_task(exit): T#:%d team=%p task=%p\n", tid,
1127 void __kmp_finish_implicit_task(kmp_info_t *thread) {
1128 kmp_taskdata_t *task = thread->th.th_current_task;
1129 if (task->td_dephash) {
1131 task->td_flags.complete = 1;
1132 children = KMP_ATOMIC_LD_ACQ(&task->td_incomplete_child_tasks);
1133 kmp_tasking_flags_t flags_old = task->td_flags;
1134 if (children == 0 && flags_old.complete == 1) {
1135 kmp_tasking_flags_t flags_new = flags_old;
1136 flags_new.complete = 0;
1137 if (KMP_COMPARE_AND_STORE_ACQ32(RCAST(kmp_int32 *, &task->td_flags),
1138 *RCAST(kmp_int32 *, &flags_old),
1139 *RCAST(kmp_int32 *, &flags_new))) {
1140 KA_TRACE(100, (
"__kmp_finish_implicit_task: T#%d cleans "
1141 "dephash of implicit task %p\n",
1142 thread->th.th_info.ds.ds_gtid, task));
1143 __kmp_dephash_free_entries(thread, task->td_dephash);
1153 void __kmp_free_implicit_task(kmp_info_t *thread) {
1154 kmp_taskdata_t *task = thread->th.th_current_task;
1155 if (task && task->td_dephash) {
1156 __kmp_dephash_free(thread, task->td_dephash);
1157 task->td_dephash = NULL;
1163 static size_t __kmp_round_up_to_val(
size_t size,
size_t val) {
1164 if (size & (val - 1)) {
1166 if (size <= KMP_SIZE_T_MAX - val) {
1185 kmp_task_t *__kmp_task_alloc(
ident_t *loc_ref, kmp_int32 gtid,
1186 kmp_tasking_flags_t *flags,
1187 size_t sizeof_kmp_task_t,
size_t sizeof_shareds,
1188 kmp_routine_entry_t task_entry) {
1190 kmp_taskdata_t *taskdata;
1191 kmp_info_t *thread = __kmp_threads[gtid];
1192 kmp_info_t *encountering_thread = thread;
1193 kmp_team_t *team = thread->th.th_team;
1194 kmp_taskdata_t *parent_task = thread->th.th_current_task;
1195 size_t shareds_offset;
1197 if (UNLIKELY(!TCR_4(__kmp_init_middle)))
1198 __kmp_middle_initialize();
1200 if (flags->hidden_helper) {
1201 if (__kmp_enable_hidden_helper) {
1202 if (!TCR_4(__kmp_init_hidden_helper))
1203 __kmp_hidden_helper_initialize();
1208 if (!KMP_HIDDEN_HELPER_THREAD(gtid)) {
1209 thread = __kmp_threads[KMP_GTID_TO_SHADOW_GTID(gtid)];
1215 flags->hidden_helper = FALSE;
1219 KA_TRACE(10, (
"__kmp_task_alloc(enter): T#%d loc=%p, flags=(0x%x) "
1220 "sizeof_task=%ld sizeof_shared=%ld entry=%p\n",
1221 gtid, loc_ref, *((kmp_int32 *)flags), sizeof_kmp_task_t,
1222 sizeof_shareds, task_entry));
1224 KMP_DEBUG_ASSERT(parent_task);
1225 if (parent_task->td_flags.final) {
1226 if (flags->merged_if0) {
1231 if (flags->tiedness == TASK_UNTIED && !team->t.t_serialized) {
1236 encountering_thread->th.th_task_team->tt.tt_untied_task_encountered, 1);
1242 if (UNLIKELY(flags->proxy == TASK_PROXY ||
1243 flags->detachable == TASK_DETACHABLE || flags->hidden_helper)) {
1244 if (flags->proxy == TASK_PROXY) {
1245 flags->tiedness = TASK_UNTIED;
1246 flags->merged_if0 = 1;
1250 if ((encountering_thread->th.th_task_team) == NULL) {
1253 KMP_DEBUG_ASSERT(team->t.t_serialized);
1255 (
"T#%d creating task team in __kmp_task_alloc for proxy task\n",
1257 __kmp_task_team_setup(
1258 encountering_thread, team,
1260 encountering_thread->th.th_task_team =
1261 team->t.t_task_team[encountering_thread->th.th_task_state];
1263 kmp_task_team_t *task_team = encountering_thread->th.th_task_team;
1266 if (!KMP_TASKING_ENABLED(task_team)) {
1269 (
"T#%d enabling tasking in __kmp_task_alloc for proxy task\n", gtid));
1270 __kmp_enable_tasking(task_team, encountering_thread);
1271 kmp_int32 tid = encountering_thread->th.th_info.ds.ds_tid;
1272 kmp_thread_data_t *thread_data = &task_team->tt.tt_threads_data[tid];
1274 if (thread_data->td.td_deque == NULL) {
1275 __kmp_alloc_task_deque(encountering_thread, thread_data);
1279 if ((flags->proxy == TASK_PROXY || flags->detachable == TASK_DETACHABLE) &&
1280 task_team->tt.tt_found_proxy_tasks == FALSE)
1281 TCW_4(task_team->tt.tt_found_proxy_tasks, TRUE);
1282 if (flags->hidden_helper &&
1283 task_team->tt.tt_hidden_helper_task_encountered == FALSE)
1284 TCW_4(task_team->tt.tt_hidden_helper_task_encountered, TRUE);
1289 shareds_offset =
sizeof(kmp_taskdata_t) + sizeof_kmp_task_t;
1290 shareds_offset = __kmp_round_up_to_val(shareds_offset,
sizeof(
void *));
1293 KA_TRACE(30, (
"__kmp_task_alloc: T#%d First malloc size: %ld\n", gtid,
1295 KA_TRACE(30, (
"__kmp_task_alloc: T#%d Second malloc size: %ld\n", gtid,
1300 taskdata = (kmp_taskdata_t *)__kmp_fast_allocate(
1301 encountering_thread, shareds_offset + sizeof_shareds);
1303 taskdata = (kmp_taskdata_t *)__kmp_thread_malloc(
1304 encountering_thread, shareds_offset + sizeof_shareds);
1306 ANNOTATE_HAPPENS_AFTER(taskdata);
1308 task = KMP_TASKDATA_TO_TASK(taskdata);
1311 #if KMP_ARCH_X86 || KMP_ARCH_PPC64 || !KMP_HAVE_QUAD
1312 KMP_DEBUG_ASSERT((((kmp_uintptr_t)taskdata) & (
sizeof(
double) - 1)) == 0);
1313 KMP_DEBUG_ASSERT((((kmp_uintptr_t)task) & (
sizeof(
double) - 1)) == 0);
1315 KMP_DEBUG_ASSERT((((kmp_uintptr_t)taskdata) & (
sizeof(_Quad) - 1)) == 0);
1316 KMP_DEBUG_ASSERT((((kmp_uintptr_t)task) & (
sizeof(_Quad) - 1)) == 0);
1318 if (sizeof_shareds > 0) {
1320 task->shareds = &((
char *)taskdata)[shareds_offset];
1322 KMP_DEBUG_ASSERT((((kmp_uintptr_t)task->shareds) & (
sizeof(
void *) - 1)) ==
1325 task->shareds = NULL;
1327 task->routine = task_entry;
1330 taskdata->td_task_id = KMP_GEN_TASK_ID();
1331 taskdata->td_team = thread->th.th_team;
1332 taskdata->td_alloc_thread = encountering_thread;
1333 taskdata->td_parent = parent_task;
1334 taskdata->td_level = parent_task->td_level + 1;
1335 KMP_ATOMIC_ST_RLX(&taskdata->td_untied_count, 0);
1336 taskdata->td_ident = loc_ref;
1337 taskdata->td_taskwait_ident = NULL;
1338 taskdata->td_taskwait_counter = 0;
1339 taskdata->td_taskwait_thread = 0;
1340 KMP_DEBUG_ASSERT(taskdata->td_parent != NULL);
1342 if (flags->proxy == TASK_FULL)
1343 copy_icvs(&taskdata->td_icvs, &taskdata->td_parent->td_icvs);
1345 taskdata->td_flags.tiedness = flags->tiedness;
1346 taskdata->td_flags.final = flags->final;
1347 taskdata->td_flags.merged_if0 = flags->merged_if0;
1348 taskdata->td_flags.destructors_thunk = flags->destructors_thunk;
1349 taskdata->td_flags.proxy = flags->proxy;
1350 taskdata->td_flags.detachable = flags->detachable;
1351 taskdata->td_flags.hidden_helper = flags->hidden_helper;
1352 taskdata->encountering_gtid = gtid;
1353 taskdata->td_task_team = thread->th.th_task_team;
1354 taskdata->td_size_alloc = shareds_offset + sizeof_shareds;
1355 taskdata->td_flags.tasktype = TASK_EXPLICIT;
1358 taskdata->td_flags.tasking_ser = (__kmp_tasking_mode == tskm_immediate_exec);
1361 taskdata->td_flags.team_serial = (team->t.t_serialized) ? 1 : 0;
1367 taskdata->td_flags.task_serial =
1368 (parent_task->td_flags.final || taskdata->td_flags.team_serial ||
1369 taskdata->td_flags.tasking_ser || flags->merged_if0);
1371 taskdata->td_flags.started = 0;
1372 taskdata->td_flags.executing = 0;
1373 taskdata->td_flags.complete = 0;
1374 taskdata->td_flags.freed = 0;
1376 taskdata->td_flags.native = flags->native;
1378 KMP_ATOMIC_ST_RLX(&taskdata->td_incomplete_child_tasks, 0);
1380 KMP_ATOMIC_ST_RLX(&taskdata->td_allocated_child_tasks, 1);
1381 taskdata->td_taskgroup =
1382 parent_task->td_taskgroup;
1383 taskdata->td_dephash = NULL;
1384 taskdata->td_depnode = NULL;
1385 if (flags->tiedness == TASK_UNTIED)
1386 taskdata->td_last_tied = NULL;
1388 taskdata->td_last_tied = taskdata;
1389 taskdata->td_allow_completion_event.type = KMP_EVENT_UNINITIALIZED;
1391 if (UNLIKELY(ompt_enabled.enabled))
1392 __ompt_task_init(taskdata, gtid);
1396 if (flags->proxy == TASK_PROXY || flags->detachable == TASK_DETACHABLE ||
1397 flags->hidden_helper ||
1398 !(taskdata->td_flags.team_serial || taskdata->td_flags.tasking_ser)) {
1399 KMP_ATOMIC_INC(&parent_task->td_incomplete_child_tasks);
1400 if (parent_task->td_taskgroup)
1401 KMP_ATOMIC_INC(&parent_task->td_taskgroup->count);
1404 if (taskdata->td_parent->td_flags.tasktype == TASK_EXPLICIT) {
1405 KMP_ATOMIC_INC(&taskdata->td_parent->td_allocated_child_tasks);
1409 if (flags->hidden_helper) {
1410 taskdata->td_flags.task_serial = FALSE;
1412 KMP_ATOMIC_INC(&__kmp_unexecuted_hidden_helper_tasks);
1415 KA_TRACE(20, (
"__kmp_task_alloc(exit): T#%d created task %p parent=%p\n",
1416 gtid, taskdata, taskdata->td_parent));
1417 ANNOTATE_HAPPENS_BEFORE(task);
1422 kmp_task_t *__kmpc_omp_task_alloc(
ident_t *loc_ref, kmp_int32 gtid,
1423 kmp_int32 flags,
size_t sizeof_kmp_task_t,
1424 size_t sizeof_shareds,
1425 kmp_routine_entry_t task_entry) {
1427 kmp_tasking_flags_t *input_flags = (kmp_tasking_flags_t *)&flags;
1428 __kmp_assert_valid_gtid(gtid);
1429 input_flags->native = FALSE;
1431 KA_TRACE(10, (
"__kmpc_omp_task_alloc(enter): T#%d loc=%p, flags=(%s %s %s) "
1432 "sizeof_task=%ld sizeof_shared=%ld entry=%p\n",
1433 gtid, loc_ref, input_flags->tiedness ?
"tied " :
"untied",
1434 input_flags->proxy ?
"proxy" :
"",
1435 input_flags->detachable ?
"detachable" :
"", sizeof_kmp_task_t,
1436 sizeof_shareds, task_entry));
1438 retval = __kmp_task_alloc(loc_ref, gtid, input_flags, sizeof_kmp_task_t,
1439 sizeof_shareds, task_entry);
1441 KA_TRACE(20, (
"__kmpc_omp_task_alloc(exit): T#%d retval %p\n", gtid, retval));
1446 kmp_task_t *__kmpc_omp_target_task_alloc(
ident_t *loc_ref, kmp_int32 gtid,
1448 size_t sizeof_kmp_task_t,
1449 size_t sizeof_shareds,
1450 kmp_routine_entry_t task_entry,
1451 kmp_int64 device_id) {
1452 if (__kmp_enable_hidden_helper) {
1453 auto &input_flags =
reinterpret_cast<kmp_tasking_flags_t &
>(flags);
1454 input_flags.hidden_helper = TRUE;
1457 return __kmpc_omp_task_alloc(loc_ref, gtid, flags, sizeof_kmp_task_t,
1458 sizeof_shareds, task_entry);
1476 kmp_task_t *new_task, kmp_int32 naffins,
1477 kmp_task_affinity_info_t *affin_list) {
1486 static void __kmp_invoke_task(kmp_int32 gtid, kmp_task_t *task,
1487 kmp_taskdata_t *current_task) {
1488 kmp_taskdata_t *taskdata = KMP_TASK_TO_TASKDATA(task);
1492 30, (
"__kmp_invoke_task(enter): T#%d invoking task %p, current_task=%p\n",
1493 gtid, taskdata, current_task));
1494 KMP_DEBUG_ASSERT(task);
1495 if (UNLIKELY(taskdata->td_flags.proxy == TASK_PROXY &&
1496 taskdata->td_flags.complete == 1)) {
1501 (
"__kmp_invoke_task: T#%d running bottom finish for proxy task %p\n",
1504 __kmp_bottom_half_finish_proxy(gtid, task);
1506 KA_TRACE(30, (
"__kmp_invoke_task(exit): T#%d completed bottom finish for "
1507 "proxy task %p, resuming task %p\n",
1508 gtid, taskdata, current_task));
1516 ompt_thread_info_t oldInfo;
1517 if (UNLIKELY(ompt_enabled.enabled)) {
1519 thread = __kmp_threads[gtid];
1520 oldInfo = thread->th.ompt_thread_info;
1521 thread->th.ompt_thread_info.wait_id = 0;
1522 thread->th.ompt_thread_info.state = (thread->th.th_team_serialized)
1523 ? ompt_state_work_serial
1524 : ompt_state_work_parallel;
1525 taskdata->ompt_task_info.frame.exit_frame.ptr = OMPT_GET_FRAME_ADDRESS(0);
1530 if (taskdata->td_flags.hidden_helper) {
1532 KMP_ASSERT(KMP_HIDDEN_HELPER_THREAD(gtid));
1533 KMP_ATOMIC_DEC(&__kmp_unexecuted_hidden_helper_tasks);
1537 if (taskdata->td_flags.proxy != TASK_PROXY) {
1538 ANNOTATE_HAPPENS_AFTER(task);
1539 __kmp_task_start(gtid, task, current_task);
1545 if (UNLIKELY(__kmp_omp_cancellation)) {
1546 thread = __kmp_threads[gtid];
1547 kmp_team_t *this_team = thread->th.th_team;
1548 kmp_taskgroup_t *taskgroup = taskdata->td_taskgroup;
1549 if ((taskgroup && taskgroup->cancel_request) ||
1550 (this_team->t.t_cancel_request == cancel_parallel)) {
1551 #if OMPT_SUPPORT && OMPT_OPTIONAL
1552 ompt_data_t *task_data;
1553 if (UNLIKELY(ompt_enabled.ompt_callback_cancel)) {
1554 __ompt_get_task_info_internal(0, NULL, &task_data, NULL, NULL, NULL);
1555 ompt_callbacks.ompt_callback(ompt_callback_cancel)(
1557 ((taskgroup && taskgroup->cancel_request) ? ompt_cancel_taskgroup
1558 : ompt_cancel_parallel) |
1559 ompt_cancel_discarded_task,
1572 if (taskdata->td_flags.tiedness == TASK_UNTIED) {
1573 taskdata->td_last_tied = current_task->td_last_tied;
1574 KMP_DEBUG_ASSERT(taskdata->td_last_tied);
1576 #if KMP_STATS_ENABLED
1578 switch (KMP_GET_THREAD_STATE()) {
1579 case FORK_JOIN_BARRIER:
1580 KMP_PUSH_PARTITIONED_TIMER(OMP_task_join_bar);
1583 KMP_PUSH_PARTITIONED_TIMER(OMP_task_plain_bar);
1586 KMP_PUSH_PARTITIONED_TIMER(OMP_task_taskyield);
1589 KMP_PUSH_PARTITIONED_TIMER(OMP_task_taskwait);
1592 KMP_PUSH_PARTITIONED_TIMER(OMP_task_taskgroup);
1595 KMP_PUSH_PARTITIONED_TIMER(OMP_task_immediate);
1602 if (UNLIKELY(ompt_enabled.enabled))
1603 __ompt_task_start(task, current_task, gtid);
1606 #if USE_ITT_BUILD && USE_ITT_NOTIFY
1607 kmp_uint64 cur_time;
1608 kmp_int32 kmp_itt_count_task =
1609 __kmp_forkjoin_frames_mode == 3 && !taskdata->td_flags.task_serial &&
1610 current_task->td_flags.tasktype == TASK_IMPLICIT;
1611 if (kmp_itt_count_task) {
1612 thread = __kmp_threads[gtid];
1614 if (thread->th.th_bar_arrive_time)
1615 cur_time = __itt_get_timestamp();
1617 kmp_itt_count_task = 0;
1619 KMP_FSYNC_ACQUIRED(taskdata);
1622 #ifdef KMP_GOMP_COMPAT
1623 if (taskdata->td_flags.native) {
1624 ((void (*)(
void *))(*(task->routine)))(task->shareds);
1628 (*(task->routine))(gtid, task);
1630 KMP_POP_PARTITIONED_TIMER();
1632 #if USE_ITT_BUILD && USE_ITT_NOTIFY
1633 if (kmp_itt_count_task) {
1635 thread->th.th_bar_arrive_time += (__itt_get_timestamp() - cur_time);
1637 KMP_FSYNC_CANCEL(taskdata);
1638 KMP_FSYNC_RELEASING(taskdata->td_parent);
1643 if (taskdata->td_flags.proxy != TASK_PROXY) {
1644 ANNOTATE_HAPPENS_BEFORE(taskdata->td_parent);
1646 if (UNLIKELY(ompt_enabled.enabled)) {
1647 thread->th.ompt_thread_info = oldInfo;
1648 if (taskdata->td_flags.tiedness == TASK_TIED) {
1649 taskdata->ompt_task_info.frame.exit_frame = ompt_data_none;
1651 __kmp_task_finish<true>(gtid, task, current_task);
1654 __kmp_task_finish<false>(gtid, task, current_task);
1659 (
"__kmp_invoke_task(exit): T#%d completed task %p, resuming task %p\n",
1660 gtid, taskdata, current_task));
1674 kmp_int32 __kmpc_omp_task_parts(
ident_t *loc_ref, kmp_int32 gtid,
1675 kmp_task_t *new_task) {
1676 kmp_taskdata_t *new_taskdata = KMP_TASK_TO_TASKDATA(new_task);
1678 KA_TRACE(10, (
"__kmpc_omp_task_parts(enter): T#%d loc=%p task=%p\n", gtid,
1679 loc_ref, new_taskdata));
1682 kmp_taskdata_t *parent;
1683 if (UNLIKELY(ompt_enabled.enabled)) {
1684 parent = new_taskdata->td_parent;
1685 if (ompt_enabled.ompt_callback_task_create) {
1686 ompt_callbacks.ompt_callback(ompt_callback_task_create)(
1687 &(parent->ompt_task_info.task_data), &(parent->ompt_task_info.frame),
1688 &(new_taskdata->ompt_task_info.task_data), ompt_task_explicit, 0,
1689 OMPT_GET_RETURN_ADDRESS(0));
1697 if (__kmp_push_task(gtid, new_task) == TASK_NOT_PUSHED)
1699 kmp_taskdata_t *current_task = __kmp_threads[gtid]->th.th_current_task;
1700 new_taskdata->td_flags.task_serial = 1;
1701 __kmp_invoke_task(gtid, new_task, current_task);
1706 (
"__kmpc_omp_task_parts(exit): T#%d returning TASK_CURRENT_NOT_QUEUED: "
1707 "loc=%p task=%p, return: TASK_CURRENT_NOT_QUEUED\n",
1708 gtid, loc_ref, new_taskdata));
1710 ANNOTATE_HAPPENS_BEFORE(new_task);
1712 if (UNLIKELY(ompt_enabled.enabled)) {
1713 parent->ompt_task_info.frame.enter_frame = ompt_data_none;
1716 return TASK_CURRENT_NOT_QUEUED;
1730 kmp_int32 __kmp_omp_task(kmp_int32 gtid, kmp_task_t *new_task,
1731 bool serialize_immediate) {
1732 kmp_taskdata_t *new_taskdata = KMP_TASK_TO_TASKDATA(new_task);
1736 if (new_taskdata->td_flags.proxy == TASK_PROXY ||
1737 __kmp_push_task(gtid, new_task) == TASK_NOT_PUSHED)
1739 kmp_taskdata_t *current_task = __kmp_threads[gtid]->th.th_current_task;
1740 if (serialize_immediate)
1741 new_taskdata->td_flags.task_serial = 1;
1742 __kmp_invoke_task(gtid, new_task, current_task);
1745 ANNOTATE_HAPPENS_BEFORE(new_task);
1746 return TASK_CURRENT_NOT_QUEUED;
1761 kmp_int32 __kmpc_omp_task(
ident_t *loc_ref, kmp_int32 gtid,
1762 kmp_task_t *new_task) {
1764 KMP_SET_THREAD_STATE_BLOCK(EXPLICIT_TASK);
1766 #if KMP_DEBUG || OMPT_SUPPORT
1767 kmp_taskdata_t *new_taskdata = KMP_TASK_TO_TASKDATA(new_task);
1769 KA_TRACE(10, (
"__kmpc_omp_task(enter): T#%d loc=%p task=%p\n", gtid, loc_ref,
1771 __kmp_assert_valid_gtid(gtid);
1774 kmp_taskdata_t *parent = NULL;
1775 if (UNLIKELY(ompt_enabled.enabled)) {
1776 if (!new_taskdata->td_flags.started) {
1777 OMPT_STORE_RETURN_ADDRESS(gtid);
1778 parent = new_taskdata->td_parent;
1779 if (!parent->ompt_task_info.frame.enter_frame.ptr) {
1780 parent->ompt_task_info.frame.enter_frame.ptr =
1781 OMPT_GET_FRAME_ADDRESS(0);
1783 if (ompt_enabled.ompt_callback_task_create) {
1784 ompt_callbacks.ompt_callback(ompt_callback_task_create)(
1785 &(parent->ompt_task_info.task_data),
1786 &(parent->ompt_task_info.frame),
1787 &(new_taskdata->ompt_task_info.task_data),
1788 ompt_task_explicit | TASK_TYPE_DETAILS_FORMAT(new_taskdata), 0,
1789 OMPT_LOAD_RETURN_ADDRESS(gtid));
1794 __ompt_task_finish(new_task,
1795 new_taskdata->ompt_task_info.scheduling_parent,
1797 new_taskdata->ompt_task_info.frame.exit_frame = ompt_data_none;
1802 res = __kmp_omp_task(gtid, new_task,
true);
1804 KA_TRACE(10, (
"__kmpc_omp_task(exit): T#%d returning "
1805 "TASK_CURRENT_NOT_QUEUED: loc=%p task=%p\n",
1806 gtid, loc_ref, new_taskdata));
1808 if (UNLIKELY(ompt_enabled.enabled && parent != NULL)) {
1809 parent->ompt_task_info.frame.enter_frame = ompt_data_none;
1828 kmp_int32 __kmp_omp_taskloop_task(
ident_t *loc_ref, kmp_int32 gtid,
1829 kmp_task_t *new_task,
void *codeptr_ra) {
1831 KMP_SET_THREAD_STATE_BLOCK(EXPLICIT_TASK);
1833 #if KMP_DEBUG || OMPT_SUPPORT
1834 kmp_taskdata_t *new_taskdata = KMP_TASK_TO_TASKDATA(new_task);
1836 KA_TRACE(10, (
"__kmpc_omp_task(enter): T#%d loc=%p task=%p\n", gtid, loc_ref,
1840 kmp_taskdata_t *parent = NULL;
1841 if (UNLIKELY(ompt_enabled.enabled && !new_taskdata->td_flags.started)) {
1842 parent = new_taskdata->td_parent;
1843 if (!parent->ompt_task_info.frame.enter_frame.ptr)
1844 parent->ompt_task_info.frame.enter_frame.ptr = OMPT_GET_FRAME_ADDRESS(0);
1845 if (ompt_enabled.ompt_callback_task_create) {
1846 ompt_callbacks.ompt_callback(ompt_callback_task_create)(
1847 &(parent->ompt_task_info.task_data), &(parent->ompt_task_info.frame),
1848 &(new_taskdata->ompt_task_info.task_data),
1849 ompt_task_explicit | TASK_TYPE_DETAILS_FORMAT(new_taskdata), 0,
1855 res = __kmp_omp_task(gtid, new_task,
true);
1857 KA_TRACE(10, (
"__kmpc_omp_task(exit): T#%d returning "
1858 "TASK_CURRENT_NOT_QUEUED: loc=%p task=%p\n",
1859 gtid, loc_ref, new_taskdata));
1861 if (UNLIKELY(ompt_enabled.enabled && parent != NULL)) {
1862 parent->ompt_task_info.frame.enter_frame = ompt_data_none;
1868 template <
bool ompt>
1869 static kmp_int32 __kmpc_omp_taskwait_template(
ident_t *loc_ref, kmp_int32 gtid,
1870 void *frame_address,
1871 void *return_address) {
1872 kmp_taskdata_t *taskdata =
nullptr;
1874 int thread_finished = FALSE;
1875 KMP_SET_THREAD_STATE_BLOCK(TASKWAIT);
1877 KA_TRACE(10, (
"__kmpc_omp_taskwait(enter): T#%d loc=%p\n", gtid, loc_ref));
1878 KMP_DEBUG_ASSERT(gtid >= 0);
1880 if (__kmp_tasking_mode != tskm_immediate_exec) {
1881 thread = __kmp_threads[gtid];
1882 taskdata = thread->th.th_current_task;
1884 #if OMPT_SUPPORT && OMPT_OPTIONAL
1885 ompt_data_t *my_task_data;
1886 ompt_data_t *my_parallel_data;
1889 my_task_data = &(taskdata->ompt_task_info.task_data);
1890 my_parallel_data = OMPT_CUR_TEAM_DATA(thread);
1892 taskdata->ompt_task_info.frame.enter_frame.ptr = frame_address;
1894 if (ompt_enabled.ompt_callback_sync_region) {
1895 ompt_callbacks.ompt_callback(ompt_callback_sync_region)(
1896 ompt_sync_region_taskwait, ompt_scope_begin, my_parallel_data,
1897 my_task_data, return_address);
1900 if (ompt_enabled.ompt_callback_sync_region_wait) {
1901 ompt_callbacks.ompt_callback(ompt_callback_sync_region_wait)(
1902 ompt_sync_region_taskwait, ompt_scope_begin, my_parallel_data,
1903 my_task_data, return_address);
1913 taskdata->td_taskwait_counter += 1;
1914 taskdata->td_taskwait_ident = loc_ref;
1915 taskdata->td_taskwait_thread = gtid + 1;
1918 void *itt_sync_obj = NULL;
1920 KMP_ITT_TASKWAIT_STARTING(itt_sync_obj);
1925 !taskdata->td_flags.team_serial && !taskdata->td_flags.final;
1927 must_wait = must_wait || (thread->th.th_task_team != NULL &&
1928 thread->th.th_task_team->tt.tt_found_proxy_tasks);
1932 (__kmp_enable_hidden_helper && thread->th.th_task_team != NULL &&
1933 thread->th.th_task_team->tt.tt_hidden_helper_task_encountered);
1936 kmp_flag_32<false, false> flag(
1937 RCAST(std::atomic<kmp_uint32> *,
1938 &(taskdata->td_incomplete_child_tasks)),
1940 while (KMP_ATOMIC_LD_ACQ(&taskdata->td_incomplete_child_tasks) != 0) {
1941 flag.execute_tasks(thread, gtid, FALSE,
1942 &thread_finished USE_ITT_BUILD_ARG(itt_sync_obj),
1943 __kmp_task_stealing_constraint);
1947 KMP_ITT_TASKWAIT_FINISHED(itt_sync_obj);
1948 KMP_FSYNC_ACQUIRED(taskdata);
1953 taskdata->td_taskwait_thread = -taskdata->td_taskwait_thread;
1955 #if OMPT_SUPPORT && OMPT_OPTIONAL
1957 if (ompt_enabled.ompt_callback_sync_region_wait) {
1958 ompt_callbacks.ompt_callback(ompt_callback_sync_region_wait)(
1959 ompt_sync_region_taskwait, ompt_scope_end, my_parallel_data,
1960 my_task_data, return_address);
1962 if (ompt_enabled.ompt_callback_sync_region) {
1963 ompt_callbacks.ompt_callback(ompt_callback_sync_region)(
1964 ompt_sync_region_taskwait, ompt_scope_end, my_parallel_data,
1965 my_task_data, return_address);
1967 taskdata->ompt_task_info.frame.enter_frame = ompt_data_none;
1971 ANNOTATE_HAPPENS_AFTER(taskdata);
1974 KA_TRACE(10, (
"__kmpc_omp_taskwait(exit): T#%d task %p finished waiting, "
1975 "returning TASK_CURRENT_NOT_QUEUED\n",
1978 return TASK_CURRENT_NOT_QUEUED;
1981 #if OMPT_SUPPORT && OMPT_OPTIONAL
1983 static kmp_int32 __kmpc_omp_taskwait_ompt(
ident_t *loc_ref, kmp_int32 gtid,
1984 void *frame_address,
1985 void *return_address) {
1986 return __kmpc_omp_taskwait_template<true>(loc_ref, gtid, frame_address,
1993 kmp_int32 __kmpc_omp_taskwait(
ident_t *loc_ref, kmp_int32 gtid) {
1994 #if OMPT_SUPPORT && OMPT_OPTIONAL
1995 if (UNLIKELY(ompt_enabled.enabled)) {
1996 OMPT_STORE_RETURN_ADDRESS(gtid);
1997 return __kmpc_omp_taskwait_ompt(loc_ref, gtid, OMPT_GET_FRAME_ADDRESS(0),
1998 OMPT_LOAD_RETURN_ADDRESS(gtid));
2001 return __kmpc_omp_taskwait_template<false>(loc_ref, gtid, NULL, NULL);
2005 kmp_int32 __kmpc_omp_taskyield(
ident_t *loc_ref, kmp_int32 gtid,
int end_part) {
2006 kmp_taskdata_t *taskdata = NULL;
2008 int thread_finished = FALSE;
2011 KMP_SET_THREAD_STATE_BLOCK(TASKYIELD);
2013 KA_TRACE(10, (
"__kmpc_omp_taskyield(enter): T#%d loc=%p end_part = %d\n",
2014 gtid, loc_ref, end_part));
2015 __kmp_assert_valid_gtid(gtid);
2017 if (__kmp_tasking_mode != tskm_immediate_exec && __kmp_init_parallel) {
2018 thread = __kmp_threads[gtid];
2019 taskdata = thread->th.th_current_task;
2026 taskdata->td_taskwait_counter += 1;
2027 taskdata->td_taskwait_ident = loc_ref;
2028 taskdata->td_taskwait_thread = gtid + 1;
2031 void *itt_sync_obj = NULL;
2033 KMP_ITT_TASKWAIT_STARTING(itt_sync_obj);
2036 if (!taskdata->td_flags.team_serial) {
2037 kmp_task_team_t *task_team = thread->th.th_task_team;
2038 if (task_team != NULL) {
2039 if (KMP_TASKING_ENABLED(task_team)) {
2041 if (UNLIKELY(ompt_enabled.enabled))
2042 thread->th.ompt_thread_info.ompt_task_yielded = 1;
2044 __kmp_execute_tasks_32(
2045 thread, gtid, (kmp_flag_32<> *)NULL, FALSE,
2046 &thread_finished USE_ITT_BUILD_ARG(itt_sync_obj),
2047 __kmp_task_stealing_constraint);
2049 if (UNLIKELY(ompt_enabled.enabled))
2050 thread->th.ompt_thread_info.ompt_task_yielded = 0;
2056 KMP_ITT_TASKWAIT_FINISHED(itt_sync_obj);
2061 taskdata->td_taskwait_thread = -taskdata->td_taskwait_thread;
2064 KA_TRACE(10, (
"__kmpc_omp_taskyield(exit): T#%d task %p resuming, "
2065 "returning TASK_CURRENT_NOT_QUEUED\n",
2068 return TASK_CURRENT_NOT_QUEUED;
2089 unsigned reserved31 : 31;
2169 template <
typename T>
2170 void *__kmp_task_reduction_init(
int gtid,
int num, T *data) {
2171 __kmp_assert_valid_gtid(gtid);
2172 kmp_info_t *thread = __kmp_threads[gtid];
2173 kmp_taskgroup_t *tg = thread->th.th_current_task->td_taskgroup;
2174 kmp_uint32 nth = thread->th.th_team_nproc;
2178 KMP_ASSERT(tg != NULL);
2179 KMP_ASSERT(data != NULL);
2180 KMP_ASSERT(num > 0);
2182 KA_TRACE(10, (
"__kmpc_task_reduction_init: T#%d, tg %p, exiting nth=1\n",
2186 KA_TRACE(10, (
"__kmpc_task_reduction_init: T#%d, taskgroup %p, #items %d\n",
2190 for (
int i = 0; i < num; ++i) {
2191 size_t size = data[i].reduce_size - 1;
2193 size += CACHE_LINE - size % CACHE_LINE;
2194 KMP_ASSERT(data[i].reduce_comb != NULL);
2197 arr[i].
flags = data[i].flags;
2201 __kmp_assign_orig<T>(arr[i], data[i]);
2202 if (!arr[i].flags.lazy_priv) {
2205 arr[i].
reduce_pend = (
char *)(arr[i].reduce_priv) + nth * size;
2206 if (arr[i].reduce_init != NULL) {
2208 for (
size_t j = 0; j < nth; ++j) {
2209 __kmp_call_init<T>(arr[i], j * size);
2216 arr[i].
reduce_priv = __kmp_allocate(nth *
sizeof(
void *));
2219 tg->reduce_data = (
void *)arr;
2220 tg->reduce_num_data = num;
2259 template <
typename T>
2260 void __kmp_task_reduction_init_copy(kmp_info_t *thr,
int num, T *data,
2261 kmp_taskgroup_t *tg,
void *reduce_data) {
2263 KA_TRACE(20, (
"__kmp_task_reduction_init_copy: Th %p, init taskgroup %p,"
2265 thr, tg, reduce_data));
2270 for (
int i = 0; i < num; ++i) {
2273 tg->reduce_data = (
void *)arr;
2274 tg->reduce_num_data = num;
2287 __kmp_assert_valid_gtid(gtid);
2288 kmp_info_t *thread = __kmp_threads[gtid];
2289 kmp_int32 nth = thread->th.th_team_nproc;
2293 kmp_taskgroup_t *tg = (kmp_taskgroup_t *)tskgrp;
2295 tg = thread->th.th_current_task->td_taskgroup;
2296 KMP_ASSERT(tg != NULL);
2298 kmp_int32 num = tg->reduce_num_data;
2299 kmp_int32 tid = thread->th.th_info.ds.ds_tid;
2301 KMP_ASSERT(data != NULL);
2302 while (tg != NULL) {
2303 for (
int i = 0; i < num; ++i) {
2304 if (!arr[i].flags.lazy_priv) {
2305 if (data == arr[i].reduce_shar ||
2306 (data >= arr[i].reduce_priv && data < arr[i].reduce_pend))
2307 return (
char *)(arr[i].
reduce_priv) + tid * arr[i].reduce_size;
2310 void **p_priv = (
void **)(arr[i].reduce_priv);
2311 if (data == arr[i].reduce_shar)
2314 for (
int j = 0; j < nth; ++j)
2315 if (data == p_priv[j])
2319 if (p_priv[tid] == NULL) {
2321 p_priv[tid] = __kmp_allocate(arr[i].reduce_size);
2322 if (arr[i].reduce_init != NULL) {
2323 if (arr[i].reduce_orig != NULL) {
2325 p_priv[tid], arr[i].reduce_orig);
2327 ((void (*)(
void *))arr[i].
reduce_init)(p_priv[tid]);
2336 num = tg->reduce_num_data;
2338 KMP_ASSERT2(0,
"Unknown task reduction item");
2344 static void __kmp_task_reduction_fini(kmp_info_t *th, kmp_taskgroup_t *tg) {
2345 kmp_int32 nth = th->th.th_team_nproc;
2346 KMP_DEBUG_ASSERT(nth > 1);
2348 kmp_int32 num = tg->reduce_num_data;
2349 for (
int i = 0; i < num; ++i) {
2351 void (*f_fini)(
void *) = (
void (*)(
void *))(arr[i].
reduce_fini);
2352 void (*f_comb)(
void *,
void *) =
2354 if (!arr[i].flags.lazy_priv) {
2357 for (
int j = 0; j < nth; ++j) {
2358 void *priv_data = (
char *)pr_data + j * size;
2359 f_comb(sh_data, priv_data);
2364 void **pr_data = (
void **)(arr[i].reduce_priv);
2365 for (
int j = 0; j < nth; ++j) {
2366 if (pr_data[j] != NULL) {
2367 f_comb(sh_data, pr_data[j]);
2370 __kmp_free(pr_data[j]);
2374 __kmp_free(arr[i].reduce_priv);
2376 __kmp_thread_free(th, arr);
2377 tg->reduce_data = NULL;
2378 tg->reduce_num_data = 0;
2384 static void __kmp_task_reduction_clean(kmp_info_t *th, kmp_taskgroup_t *tg) {
2385 __kmp_thread_free(th, tg->reduce_data);
2386 tg->reduce_data = NULL;
2387 tg->reduce_num_data = 0;
2390 template <
typename T>
2391 void *__kmp_task_reduction_modifier_init(
ident_t *loc,
int gtid,
int is_ws,
2393 __kmp_assert_valid_gtid(gtid);
2394 kmp_info_t *thr = __kmp_threads[gtid];
2395 kmp_int32 nth = thr->th.th_team_nproc;
2396 __kmpc_taskgroup(loc, gtid);
2399 (
"__kmpc_reduction_modifier_init: T#%d, tg %p, exiting nth=1\n",
2400 gtid, thr->th.th_current_task->td_taskgroup));
2401 return (
void *)thr->th.th_current_task->td_taskgroup;
2403 kmp_team_t *team = thr->th.th_team;
2405 kmp_taskgroup_t *tg;
2406 reduce_data = KMP_ATOMIC_LD_RLX(&team->t.t_tg_reduce_data[is_ws]);
2407 if (reduce_data == NULL &&
2408 __kmp_atomic_compare_store(&team->t.t_tg_reduce_data[is_ws], reduce_data,
2411 KMP_DEBUG_ASSERT(reduce_data == NULL);
2413 tg = (kmp_taskgroup_t *)__kmp_task_reduction_init<T>(gtid, num, data);
2417 KMP_DEBUG_ASSERT(KMP_ATOMIC_LD_RLX(&team->t.t_tg_fini_counter[0]) == 0);
2418 KMP_DEBUG_ASSERT(KMP_ATOMIC_LD_RLX(&team->t.t_tg_fini_counter[1]) == 0);
2419 KMP_ATOMIC_ST_REL(&team->t.t_tg_reduce_data[is_ws], reduce_data);
2422 (reduce_data = KMP_ATOMIC_LD_ACQ(&team->t.t_tg_reduce_data[is_ws])) ==
2426 KMP_DEBUG_ASSERT(reduce_data > (
void *)1);
2427 tg = thr->th.th_current_task->td_taskgroup;
2428 __kmp_task_reduction_init_copy<T>(thr, num, data, tg, reduce_data);
2450 int num,
void *data) {
2451 return __kmp_task_reduction_modifier_init(loc, gtid, is_ws, num,
2471 return __kmp_task_reduction_modifier_init(loc, gtid, is_ws, num,
2484 __kmpc_end_taskgroup(loc, gtid);
2488 void __kmpc_taskgroup(
ident_t *loc,
int gtid) {
2489 __kmp_assert_valid_gtid(gtid);
2490 kmp_info_t *thread = __kmp_threads[gtid];
2491 kmp_taskdata_t *taskdata = thread->th.th_current_task;
2492 kmp_taskgroup_t *tg_new =
2493 (kmp_taskgroup_t *)__kmp_thread_malloc(thread,
sizeof(kmp_taskgroup_t));
2494 KA_TRACE(10, (
"__kmpc_taskgroup: T#%d loc=%p group=%p\n", gtid, loc, tg_new));
2495 KMP_ATOMIC_ST_RLX(&tg_new->count, 0);
2496 KMP_ATOMIC_ST_RLX(&tg_new->cancel_request, cancel_noreq);
2497 tg_new->parent = taskdata->td_taskgroup;
2498 tg_new->reduce_data = NULL;
2499 tg_new->reduce_num_data = 0;
2500 tg_new->gomp_data = NULL;
2501 taskdata->td_taskgroup = tg_new;
2503 #if OMPT_SUPPORT && OMPT_OPTIONAL
2504 if (UNLIKELY(ompt_enabled.ompt_callback_sync_region)) {
2505 void *codeptr = OMPT_LOAD_RETURN_ADDRESS(gtid);
2507 codeptr = OMPT_GET_RETURN_ADDRESS(0);
2508 kmp_team_t *team = thread->th.th_team;
2509 ompt_data_t my_task_data = taskdata->ompt_task_info.task_data;
2511 ompt_data_t my_parallel_data = team->t.ompt_team_info.parallel_data;
2513 ompt_callbacks.ompt_callback(ompt_callback_sync_region)(
2514 ompt_sync_region_taskgroup, ompt_scope_begin, &(my_parallel_data),
2515 &(my_task_data), codeptr);
2522 void __kmpc_end_taskgroup(
ident_t *loc,
int gtid) {
2523 __kmp_assert_valid_gtid(gtid);
2524 kmp_info_t *thread = __kmp_threads[gtid];
2525 kmp_taskdata_t *taskdata = thread->th.th_current_task;
2526 kmp_taskgroup_t *taskgroup = taskdata->td_taskgroup;
2527 int thread_finished = FALSE;
2529 #if OMPT_SUPPORT && OMPT_OPTIONAL
2531 ompt_data_t my_task_data;
2532 ompt_data_t my_parallel_data;
2533 void *codeptr =
nullptr;
2534 if (UNLIKELY(ompt_enabled.enabled)) {
2535 team = thread->th.th_team;
2536 my_task_data = taskdata->ompt_task_info.task_data;
2538 my_parallel_data = team->t.ompt_team_info.parallel_data;
2539 codeptr = OMPT_LOAD_RETURN_ADDRESS(gtid);
2541 codeptr = OMPT_GET_RETURN_ADDRESS(0);
2545 KA_TRACE(10, (
"__kmpc_end_taskgroup(enter): T#%d loc=%p\n", gtid, loc));
2546 KMP_DEBUG_ASSERT(taskgroup != NULL);
2547 KMP_SET_THREAD_STATE_BLOCK(TASKGROUP);
2549 if (__kmp_tasking_mode != tskm_immediate_exec) {
2551 taskdata->td_taskwait_counter += 1;
2552 taskdata->td_taskwait_ident = loc;
2553 taskdata->td_taskwait_thread = gtid + 1;
2557 void *itt_sync_obj = NULL;
2559 KMP_ITT_TASKWAIT_STARTING(itt_sync_obj);
2563 #if OMPT_SUPPORT && OMPT_OPTIONAL
2564 if (UNLIKELY(ompt_enabled.ompt_callback_sync_region_wait)) {
2565 ompt_callbacks.ompt_callback(ompt_callback_sync_region_wait)(
2566 ompt_sync_region_taskgroup, ompt_scope_begin, &(my_parallel_data),
2567 &(my_task_data), codeptr);
2571 if (!taskdata->td_flags.team_serial ||
2572 (thread->th.th_task_team != NULL &&
2573 thread->th.th_task_team->tt.tt_found_proxy_tasks)) {
2574 kmp_flag_32<false, false> flag(
2575 RCAST(std::atomic<kmp_uint32> *, &(taskgroup->count)), 0U);
2576 while (KMP_ATOMIC_LD_ACQ(&taskgroup->count) != 0) {
2577 flag.execute_tasks(thread, gtid, FALSE,
2578 &thread_finished USE_ITT_BUILD_ARG(itt_sync_obj),
2579 __kmp_task_stealing_constraint);
2582 taskdata->td_taskwait_thread = -taskdata->td_taskwait_thread;
2584 #if OMPT_SUPPORT && OMPT_OPTIONAL
2585 if (UNLIKELY(ompt_enabled.ompt_callback_sync_region_wait)) {
2586 ompt_callbacks.ompt_callback(ompt_callback_sync_region_wait)(
2587 ompt_sync_region_taskgroup, ompt_scope_end, &(my_parallel_data),
2588 &(my_task_data), codeptr);
2593 KMP_ITT_TASKWAIT_FINISHED(itt_sync_obj);
2594 KMP_FSYNC_ACQUIRED(taskdata);
2597 KMP_DEBUG_ASSERT(taskgroup->count == 0);
2599 if (taskgroup->reduce_data != NULL &&
2600 !taskgroup->gomp_data) {
2603 kmp_team_t *t = thread->th.th_team;
2607 if ((reduce_data = KMP_ATOMIC_LD_ACQ(&t->t.t_tg_reduce_data[0])) != NULL &&
2610 cnt = KMP_ATOMIC_INC(&t->t.t_tg_fini_counter[0]);
2611 if (cnt == thread->th.th_team_nproc - 1) {
2614 __kmp_task_reduction_fini(thread, taskgroup);
2617 __kmp_thread_free(thread, reduce_data);
2618 KMP_ATOMIC_ST_REL(&t->t.t_tg_reduce_data[0], NULL);
2619 KMP_ATOMIC_ST_REL(&t->t.t_tg_fini_counter[0], 0);
2623 __kmp_task_reduction_clean(thread, taskgroup);
2625 }
else if ((reduce_data = KMP_ATOMIC_LD_ACQ(&t->t.t_tg_reduce_data[1])) !=
2629 cnt = KMP_ATOMIC_INC(&t->t.t_tg_fini_counter[1]);
2630 if (cnt == thread->th.th_team_nproc - 1) {
2632 __kmp_task_reduction_fini(thread, taskgroup);
2635 __kmp_thread_free(thread, reduce_data);
2636 KMP_ATOMIC_ST_REL(&t->t.t_tg_reduce_data[1], NULL);
2637 KMP_ATOMIC_ST_REL(&t->t.t_tg_fini_counter[1], 0);
2641 __kmp_task_reduction_clean(thread, taskgroup);
2645 __kmp_task_reduction_fini(thread, taskgroup);
2649 taskdata->td_taskgroup = taskgroup->parent;
2650 __kmp_thread_free(thread, taskgroup);
2652 KA_TRACE(10, (
"__kmpc_end_taskgroup(exit): T#%d task %p finished waiting\n",
2654 ANNOTATE_HAPPENS_AFTER(taskdata);
2656 #if OMPT_SUPPORT && OMPT_OPTIONAL
2657 if (UNLIKELY(ompt_enabled.ompt_callback_sync_region)) {
2658 ompt_callbacks.ompt_callback(ompt_callback_sync_region)(
2659 ompt_sync_region_taskgroup, ompt_scope_end, &(my_parallel_data),
2660 &(my_task_data), codeptr);
2666 static kmp_task_t *__kmp_remove_my_task(kmp_info_t *thread, kmp_int32 gtid,
2667 kmp_task_team_t *task_team,
2668 kmp_int32 is_constrained) {
2670 kmp_taskdata_t *taskdata;
2671 kmp_thread_data_t *thread_data;
2674 KMP_DEBUG_ASSERT(__kmp_tasking_mode != tskm_immediate_exec);
2675 KMP_DEBUG_ASSERT(task_team->tt.tt_threads_data !=
2678 thread_data = &task_team->tt.tt_threads_data[__kmp_tid_from_gtid(gtid)];
2680 KA_TRACE(10, (
"__kmp_remove_my_task(enter): T#%d ntasks=%d head=%u tail=%u\n",
2681 gtid, thread_data->td.td_deque_ntasks,
2682 thread_data->td.td_deque_head, thread_data->td.td_deque_tail));
2684 if (TCR_4(thread_data->td.td_deque_ntasks) == 0) {
2686 (
"__kmp_remove_my_task(exit #1): T#%d No tasks to remove: "
2687 "ntasks=%d head=%u tail=%u\n",
2688 gtid, thread_data->td.td_deque_ntasks,
2689 thread_data->td.td_deque_head, thread_data->td.td_deque_tail));
2693 __kmp_acquire_bootstrap_lock(&thread_data->td.td_deque_lock);
2695 if (TCR_4(thread_data->td.td_deque_ntasks) == 0) {
2696 __kmp_release_bootstrap_lock(&thread_data->td.td_deque_lock);
2698 (
"__kmp_remove_my_task(exit #2): T#%d No tasks to remove: "
2699 "ntasks=%d head=%u tail=%u\n",
2700 gtid, thread_data->td.td_deque_ntasks,
2701 thread_data->td.td_deque_head, thread_data->td.td_deque_tail));
2705 tail = (thread_data->td.td_deque_tail - 1) &
2706 TASK_DEQUE_MASK(thread_data->td);
2707 taskdata = thread_data->td.td_deque[tail];
2709 if (!__kmp_task_is_allowed(gtid, is_constrained, taskdata,
2710 thread->th.th_current_task)) {
2712 __kmp_release_bootstrap_lock(&thread_data->td.td_deque_lock);
2714 (
"__kmp_remove_my_task(exit #3): T#%d TSC blocks tail task: "
2715 "ntasks=%d head=%u tail=%u\n",
2716 gtid, thread_data->td.td_deque_ntasks,
2717 thread_data->td.td_deque_head, thread_data->td.td_deque_tail));
2721 thread_data->td.td_deque_tail = tail;
2722 TCW_4(thread_data->td.td_deque_ntasks, thread_data->td.td_deque_ntasks - 1);
2724 __kmp_release_bootstrap_lock(&thread_data->td.td_deque_lock);
2726 KA_TRACE(10, (
"__kmp_remove_my_task(exit #4): T#%d task %p removed: "
2727 "ntasks=%d head=%u tail=%u\n",
2728 gtid, taskdata, thread_data->td.td_deque_ntasks,
2729 thread_data->td.td_deque_head, thread_data->td.td_deque_tail));
2731 task = KMP_TASKDATA_TO_TASK(taskdata);
2738 static kmp_task_t *__kmp_steal_task(kmp_info_t *victim_thr, kmp_int32 gtid,
2739 kmp_task_team_t *task_team,
2740 std::atomic<kmp_int32> *unfinished_threads,
2741 int *thread_finished,
2742 kmp_int32 is_constrained) {
2744 kmp_taskdata_t *taskdata;
2745 kmp_taskdata_t *current;
2746 kmp_thread_data_t *victim_td, *threads_data;
2748 kmp_int32 victim_tid;
2750 KMP_DEBUG_ASSERT(__kmp_tasking_mode != tskm_immediate_exec);
2752 threads_data = task_team->tt.tt_threads_data;
2753 KMP_DEBUG_ASSERT(threads_data != NULL);
2755 victim_tid = victim_thr->th.th_info.ds.ds_tid;
2756 victim_td = &threads_data[victim_tid];
2758 KA_TRACE(10, (
"__kmp_steal_task(enter): T#%d try to steal from T#%d: "
2759 "task_team=%p ntasks=%d head=%u tail=%u\n",
2760 gtid, __kmp_gtid_from_thread(victim_thr), task_team,
2761 victim_td->td.td_deque_ntasks, victim_td->td.td_deque_head,
2762 victim_td->td.td_deque_tail));
2764 if (TCR_4(victim_td->td.td_deque_ntasks) == 0) {
2765 KA_TRACE(10, (
"__kmp_steal_task(exit #1): T#%d could not steal from T#%d: "
2766 "task_team=%p ntasks=%d head=%u tail=%u\n",
2767 gtid, __kmp_gtid_from_thread(victim_thr), task_team,
2768 victim_td->td.td_deque_ntasks, victim_td->td.td_deque_head,
2769 victim_td->td.td_deque_tail));
2773 __kmp_acquire_bootstrap_lock(&victim_td->td.td_deque_lock);
2775 int ntasks = TCR_4(victim_td->td.td_deque_ntasks);
2778 __kmp_release_bootstrap_lock(&victim_td->td.td_deque_lock);
2779 KA_TRACE(10, (
"__kmp_steal_task(exit #2): T#%d could not steal from T#%d: "
2780 "task_team=%p ntasks=%d head=%u tail=%u\n",
2781 gtid, __kmp_gtid_from_thread(victim_thr), task_team, ntasks,
2782 victim_td->td.td_deque_head, victim_td->td.td_deque_tail));
2786 KMP_DEBUG_ASSERT(victim_td->td.td_deque != NULL);
2787 current = __kmp_threads[gtid]->th.th_current_task;
2788 taskdata = victim_td->td.td_deque[victim_td->td.td_deque_head];
2789 if (__kmp_task_is_allowed(gtid, is_constrained, taskdata, current)) {
2791 victim_td->td.td_deque_head =
2792 (victim_td->td.td_deque_head + 1) & TASK_DEQUE_MASK(victim_td->td);
2794 if (!task_team->tt.tt_untied_task_encountered) {
2796 __kmp_release_bootstrap_lock(&victim_td->td.td_deque_lock);
2797 KA_TRACE(10, (
"__kmp_steal_task(exit #3): T#%d could not steal from "
2798 "T#%d: task_team=%p ntasks=%d head=%u tail=%u\n",
2799 gtid, __kmp_gtid_from_thread(victim_thr), task_team, ntasks,
2800 victim_td->td.td_deque_head, victim_td->td.td_deque_tail));
2805 target = victim_td->td.td_deque_head;
2807 for (i = 1; i < ntasks; ++i) {
2808 target = (target + 1) & TASK_DEQUE_MASK(victim_td->td);
2809 taskdata = victim_td->td.td_deque[target];
2810 if (__kmp_task_is_allowed(gtid, is_constrained, taskdata, current)) {
2816 if (taskdata == NULL) {
2818 __kmp_release_bootstrap_lock(&victim_td->td.td_deque_lock);
2819 KA_TRACE(10, (
"__kmp_steal_task(exit #4): T#%d could not steal from "
2820 "T#%d: task_team=%p ntasks=%d head=%u tail=%u\n",
2821 gtid, __kmp_gtid_from_thread(victim_thr), task_team, ntasks,
2822 victim_td->td.td_deque_head, victim_td->td.td_deque_tail));
2826 for (i = i + 1; i < ntasks; ++i) {
2828 target = (target + 1) & TASK_DEQUE_MASK(victim_td->td);
2829 victim_td->td.td_deque[prev] = victim_td->td.td_deque[target];
2833 victim_td->td.td_deque_tail ==
2834 (kmp_uint32)((target + 1) & TASK_DEQUE_MASK(victim_td->td)));
2835 victim_td->td.td_deque_tail = target;
2837 if (*thread_finished) {
2843 count = KMP_ATOMIC_INC(unfinished_threads);
2847 (
"__kmp_steal_task: T#%d inc unfinished_threads to %d: task_team=%p\n",
2848 gtid, count + 1, task_team));
2850 *thread_finished = FALSE;
2852 TCW_4(victim_td->td.td_deque_ntasks, ntasks - 1);
2854 __kmp_release_bootstrap_lock(&victim_td->td.td_deque_lock);
2858 (
"__kmp_steal_task(exit #5): T#%d stole task %p from T#%d: "
2859 "task_team=%p ntasks=%d head=%u tail=%u\n",
2860 gtid, taskdata, __kmp_gtid_from_thread(victim_thr), task_team,
2861 ntasks, victim_td->td.td_deque_head, victim_td->td.td_deque_tail));
2863 task = KMP_TASKDATA_TO_TASK(taskdata);
2877 static inline int __kmp_execute_tasks_template(
2878 kmp_info_t *thread, kmp_int32 gtid, C *flag,
int final_spin,
2879 int *thread_finished USE_ITT_BUILD_ARG(
void *itt_sync_obj),
2880 kmp_int32 is_constrained) {
2881 kmp_task_team_t *task_team = thread->th.th_task_team;
2882 kmp_thread_data_t *threads_data;
2884 kmp_info_t *other_thread;
2885 kmp_taskdata_t *current_task = thread->th.th_current_task;
2886 std::atomic<kmp_int32> *unfinished_threads;
2887 kmp_int32 nthreads, victim_tid = -2, use_own_tasks = 1, new_victim = 0,
2888 tid = thread->th.th_info.ds.ds_tid;
2890 KMP_DEBUG_ASSERT(__kmp_tasking_mode != tskm_immediate_exec);
2891 KMP_DEBUG_ASSERT(thread == __kmp_threads[gtid]);
2893 if (task_team == NULL || current_task == NULL)
2896 KA_TRACE(15, (
"__kmp_execute_tasks_template(enter): T#%d final_spin=%d "
2897 "*thread_finished=%d\n",
2898 gtid, final_spin, *thread_finished));
2900 thread->th.th_reap_state = KMP_NOT_SAFE_TO_REAP;
2901 threads_data = (kmp_thread_data_t *)TCR_PTR(task_team->tt.tt_threads_data);
2903 KMP_DEBUG_ASSERT(threads_data != NULL);
2905 nthreads = task_team->tt.tt_nproc;
2906 unfinished_threads = &(task_team->tt.tt_unfinished_threads);
2907 KMP_DEBUG_ASSERT(nthreads > 1 || task_team->tt.tt_found_proxy_tasks ||
2908 task_team->tt.tt_hidden_helper_task_encountered);
2909 KMP_DEBUG_ASSERT(*unfinished_threads >= 0);
2915 if (use_own_tasks) {
2916 task = __kmp_remove_my_task(thread, gtid, task_team, is_constrained);
2918 if ((task == NULL) && (nthreads > 1)) {
2922 if (victim_tid == -2) {
2923 victim_tid = threads_data[tid].td.td_deque_last_stolen;
2926 other_thread = threads_data[victim_tid].td.td_thr;
2928 if (victim_tid != -1) {
2930 }
else if (!new_victim) {
2936 victim_tid = __kmp_get_random(thread) % (nthreads - 1);
2937 if (victim_tid >= tid) {
2941 other_thread = threads_data[victim_tid].td.td_thr;
2951 if ((__kmp_tasking_mode == tskm_task_teams) &&
2952 (__kmp_dflt_blocktime != KMP_MAX_BLOCKTIME) &&
2953 (TCR_PTR(CCAST(
void *, other_thread->th.th_sleep_loc)) !=
2956 __kmp_null_resume_wrapper(__kmp_gtid_from_thread(other_thread),
2957 other_thread->th.th_sleep_loc);
2970 task = __kmp_steal_task(other_thread, gtid, task_team,
2971 unfinished_threads, thread_finished,
2975 if (threads_data[tid].td.td_deque_last_stolen != victim_tid) {
2976 threads_data[tid].td.td_deque_last_stolen = victim_tid;
2983 KMP_CHECK_UPDATE(threads_data[tid].td.td_deque_last_stolen, -1);
2992 #if USE_ITT_BUILD && USE_ITT_NOTIFY
2993 if (__itt_sync_create_ptr || KMP_ITT_DEBUG) {
2994 if (itt_sync_obj == NULL) {
2996 itt_sync_obj = __kmp_itt_barrier_object(gtid, bs_forkjoin_barrier);
2998 __kmp_itt_task_starting(itt_sync_obj);
3001 __kmp_invoke_task(gtid, task, current_task);
3003 if (itt_sync_obj != NULL)
3004 __kmp_itt_task_finished(itt_sync_obj);
3011 if (flag == NULL || (!final_spin && flag->done_check())) {
3014 (
"__kmp_execute_tasks_template: T#%d spin condition satisfied\n",
3018 if (thread->th.th_task_team == NULL) {
3021 KMP_YIELD(__kmp_library == library_throughput);
3024 if (!use_own_tasks && TCR_4(threads_data[tid].td.td_deque_ntasks) != 0) {
3025 KA_TRACE(20, (
"__kmp_execute_tasks_template: T#%d stolen task spawned "
3026 "other tasks, restart\n",
3037 KMP_ATOMIC_LD_ACQ(¤t_task->td_incomplete_child_tasks) == 0) {
3041 if (!*thread_finished) {
3044 count = KMP_ATOMIC_DEC(unfinished_threads) - 1;
3045 KA_TRACE(20, (
"__kmp_execute_tasks_template: T#%d dec "
3046 "unfinished_threads to %d task_team=%p\n",
3047 gtid, count, task_team));
3048 *thread_finished = TRUE;
3056 if (flag != NULL && flag->done_check()) {
3059 (
"__kmp_execute_tasks_template: T#%d spin condition satisfied\n",
3067 if (thread->th.th_task_team == NULL) {
3069 (
"__kmp_execute_tasks_template: T#%d no more tasks\n", gtid));
3075 if (nthreads == 1 &&
3076 KMP_ATOMIC_LD_ACQ(¤t_task->td_incomplete_child_tasks))
3080 (
"__kmp_execute_tasks_template: T#%d can't find work\n", gtid));
3086 template <
bool C,
bool S>
3087 int __kmp_execute_tasks_32(
3088 kmp_info_t *thread, kmp_int32 gtid, kmp_flag_32<C, S> *flag,
int final_spin,
3089 int *thread_finished USE_ITT_BUILD_ARG(
void *itt_sync_obj),
3090 kmp_int32 is_constrained) {
3091 return __kmp_execute_tasks_template(
3092 thread, gtid, flag, final_spin,
3093 thread_finished USE_ITT_BUILD_ARG(itt_sync_obj), is_constrained);
3096 template <
bool C,
bool S>
3097 int __kmp_execute_tasks_64(
3098 kmp_info_t *thread, kmp_int32 gtid, kmp_flag_64<C, S> *flag,
int final_spin,
3099 int *thread_finished USE_ITT_BUILD_ARG(
void *itt_sync_obj),
3100 kmp_int32 is_constrained) {
3101 return __kmp_execute_tasks_template(
3102 thread, gtid, flag, final_spin,
3103 thread_finished USE_ITT_BUILD_ARG(itt_sync_obj), is_constrained);
3106 int __kmp_execute_tasks_oncore(
3107 kmp_info_t *thread, kmp_int32 gtid, kmp_flag_oncore *flag,
int final_spin,
3108 int *thread_finished USE_ITT_BUILD_ARG(
void *itt_sync_obj),
3109 kmp_int32 is_constrained) {
3110 return __kmp_execute_tasks_template(
3111 thread, gtid, flag, final_spin,
3112 thread_finished USE_ITT_BUILD_ARG(itt_sync_obj), is_constrained);
3116 __kmp_execute_tasks_32<false, false>(kmp_info_t *, kmp_int32,
3117 kmp_flag_32<false, false> *,
int,
3118 int *USE_ITT_BUILD_ARG(
void *), kmp_int32);
3120 template int __kmp_execute_tasks_64<false, true>(kmp_info_t *, kmp_int32,
3121 kmp_flag_64<false, true> *,
3123 int *USE_ITT_BUILD_ARG(
void *),
3126 template int __kmp_execute_tasks_64<true, false>(kmp_info_t *, kmp_int32,
3127 kmp_flag_64<true, false> *,
3129 int *USE_ITT_BUILD_ARG(
void *),
3135 static void __kmp_enable_tasking(kmp_task_team_t *task_team,
3136 kmp_info_t *this_thr) {
3137 kmp_thread_data_t *threads_data;
3138 int nthreads, i, is_init_thread;
3140 KA_TRACE(10, (
"__kmp_enable_tasking(enter): T#%d\n",
3141 __kmp_gtid_from_thread(this_thr)));
3143 KMP_DEBUG_ASSERT(task_team != NULL);
3144 KMP_DEBUG_ASSERT(this_thr->th.th_team != NULL);
3146 nthreads = task_team->tt.tt_nproc;
3147 KMP_DEBUG_ASSERT(nthreads > 0);
3148 KMP_DEBUG_ASSERT(nthreads == this_thr->th.th_team->t.t_nproc);
3151 is_init_thread = __kmp_realloc_task_threads_data(this_thr, task_team);
3153 if (!is_init_thread) {
3157 (
"__kmp_enable_tasking(exit): T#%d: threads array already set up.\n",
3158 __kmp_gtid_from_thread(this_thr)));
3161 threads_data = (kmp_thread_data_t *)TCR_PTR(task_team->tt.tt_threads_data);
3162 KMP_DEBUG_ASSERT(threads_data != NULL);
3164 if (__kmp_tasking_mode == tskm_task_teams &&
3165 (__kmp_dflt_blocktime != KMP_MAX_BLOCKTIME)) {
3169 for (i = 0; i < nthreads; i++) {
3170 volatile void *sleep_loc;
3171 kmp_info_t *thread = threads_data[i].td.td_thr;
3173 if (i == this_thr->th.th_info.ds.ds_tid) {
3182 if ((sleep_loc = TCR_PTR(CCAST(
void *, thread->th.th_sleep_loc))) !=
3184 KF_TRACE(50, (
"__kmp_enable_tasking: T#%d waking up thread T#%d\n",
3185 __kmp_gtid_from_thread(this_thr),
3186 __kmp_gtid_from_thread(thread)));
3187 __kmp_null_resume_wrapper(__kmp_gtid_from_thread(thread), sleep_loc);
3189 KF_TRACE(50, (
"__kmp_enable_tasking: T#%d don't wake up thread T#%d\n",
3190 __kmp_gtid_from_thread(this_thr),
3191 __kmp_gtid_from_thread(thread)));
3196 KA_TRACE(10, (
"__kmp_enable_tasking(exit): T#%d\n",
3197 __kmp_gtid_from_thread(this_thr)));
3230 static kmp_task_team_t *__kmp_free_task_teams =
3233 kmp_bootstrap_lock_t __kmp_task_team_lock =
3234 KMP_BOOTSTRAP_LOCK_INITIALIZER(__kmp_task_team_lock);
3241 static void __kmp_alloc_task_deque(kmp_info_t *thread,
3242 kmp_thread_data_t *thread_data) {
3243 __kmp_init_bootstrap_lock(&thread_data->td.td_deque_lock);
3244 KMP_DEBUG_ASSERT(thread_data->td.td_deque == NULL);
3247 thread_data->td.td_deque_last_stolen = -1;
3249 KMP_DEBUG_ASSERT(TCR_4(thread_data->td.td_deque_ntasks) == 0);
3250 KMP_DEBUG_ASSERT(thread_data->td.td_deque_head == 0);
3251 KMP_DEBUG_ASSERT(thread_data->td.td_deque_tail == 0);
3255 (
"__kmp_alloc_task_deque: T#%d allocating deque[%d] for thread_data %p\n",
3256 __kmp_gtid_from_thread(thread), INITIAL_TASK_DEQUE_SIZE, thread_data));
3260 thread_data->td.td_deque = (kmp_taskdata_t **)__kmp_allocate(
3261 INITIAL_TASK_DEQUE_SIZE *
sizeof(kmp_taskdata_t *));
3262 thread_data->td.td_deque_size = INITIAL_TASK_DEQUE_SIZE;
3268 static void __kmp_free_task_deque(kmp_thread_data_t *thread_data) {
3269 if (thread_data->td.td_deque != NULL) {
3270 __kmp_acquire_bootstrap_lock(&thread_data->td.td_deque_lock);
3271 TCW_4(thread_data->td.td_deque_ntasks, 0);
3272 __kmp_free(thread_data->td.td_deque);
3273 thread_data->td.td_deque = NULL;
3274 __kmp_release_bootstrap_lock(&thread_data->td.td_deque_lock);
3277 #ifdef BUILD_TIED_TASK_STACK
3279 if (thread_data->td.td_susp_tied_tasks.ts_entries != TASK_STACK_EMPTY) {
3280 __kmp_free_task_stack(__kmp_thread_from_gtid(gtid), thread_data);
3292 static int __kmp_realloc_task_threads_data(kmp_info_t *thread,
3293 kmp_task_team_t *task_team) {
3294 kmp_thread_data_t **threads_data_p;
3295 kmp_int32 nthreads, maxthreads;
3296 int is_init_thread = FALSE;
3298 if (TCR_4(task_team->tt.tt_found_tasks)) {
3303 threads_data_p = &task_team->tt.tt_threads_data;
3304 nthreads = task_team->tt.tt_nproc;
3305 maxthreads = task_team->tt.tt_max_threads;
3310 __kmp_acquire_bootstrap_lock(&task_team->tt.tt_threads_lock);
3312 if (!TCR_4(task_team->tt.tt_found_tasks)) {
3314 kmp_team_t *team = thread->th.th_team;
3317 is_init_thread = TRUE;
3318 if (maxthreads < nthreads) {
3320 if (*threads_data_p != NULL) {
3321 kmp_thread_data_t *old_data = *threads_data_p;
3322 kmp_thread_data_t *new_data = NULL;
3326 (
"__kmp_realloc_task_threads_data: T#%d reallocating "
3327 "threads data for task_team %p, new_size = %d, old_size = %d\n",
3328 __kmp_gtid_from_thread(thread), task_team, nthreads, maxthreads));
3333 new_data = (kmp_thread_data_t *)__kmp_allocate(
3334 nthreads *
sizeof(kmp_thread_data_t));
3336 KMP_MEMCPY_S((
void *)new_data, nthreads *
sizeof(kmp_thread_data_t),
3337 (
void *)old_data, maxthreads *
sizeof(kmp_thread_data_t));
3339 #ifdef BUILD_TIED_TASK_STACK
3341 for (i = maxthreads; i < nthreads; i++) {
3342 kmp_thread_data_t *thread_data = &(*threads_data_p)[i];
3343 __kmp_init_task_stack(__kmp_gtid_from_thread(thread), thread_data);
3347 (*threads_data_p) = new_data;
3348 __kmp_free(old_data);
3350 KE_TRACE(10, (
"__kmp_realloc_task_threads_data: T#%d allocating "
3351 "threads data for task_team %p, size = %d\n",
3352 __kmp_gtid_from_thread(thread), task_team, nthreads));
3356 ANNOTATE_IGNORE_WRITES_BEGIN();
3357 *threads_data_p = (kmp_thread_data_t *)__kmp_allocate(
3358 nthreads *
sizeof(kmp_thread_data_t));
3359 ANNOTATE_IGNORE_WRITES_END();
3360 #ifdef BUILD_TIED_TASK_STACK
3362 for (i = 0; i < nthreads; i++) {
3363 kmp_thread_data_t *thread_data = &(*threads_data_p)[i];
3364 __kmp_init_task_stack(__kmp_gtid_from_thread(thread), thread_data);
3368 task_team->tt.tt_max_threads = nthreads;
3371 KMP_DEBUG_ASSERT(*threads_data_p != NULL);
3375 for (i = 0; i < nthreads; i++) {
3376 kmp_thread_data_t *thread_data = &(*threads_data_p)[i];
3377 thread_data->td.td_thr = team->t.t_threads[i];
3379 if (thread_data->td.td_deque_last_stolen >= nthreads) {
3383 thread_data->td.td_deque_last_stolen = -1;
3388 TCW_SYNC_4(task_team->tt.tt_found_tasks, TRUE);
3391 __kmp_release_bootstrap_lock(&task_team->tt.tt_threads_lock);
3392 return is_init_thread;
3398 static void __kmp_free_task_threads_data(kmp_task_team_t *task_team) {
3399 __kmp_acquire_bootstrap_lock(&task_team->tt.tt_threads_lock);
3400 if (task_team->tt.tt_threads_data != NULL) {
3402 for (i = 0; i < task_team->tt.tt_max_threads; i++) {
3403 __kmp_free_task_deque(&task_team->tt.tt_threads_data[i]);
3405 __kmp_free(task_team->tt.tt_threads_data);
3406 task_team->tt.tt_threads_data = NULL;
3408 __kmp_release_bootstrap_lock(&task_team->tt.tt_threads_lock);
3415 static kmp_task_team_t *__kmp_allocate_task_team(kmp_info_t *thread,
3417 kmp_task_team_t *task_team = NULL;
3420 KA_TRACE(20, (
"__kmp_allocate_task_team: T#%d entering; team = %p\n",
3421 (thread ? __kmp_gtid_from_thread(thread) : -1), team));
3423 if (TCR_PTR(__kmp_free_task_teams) != NULL) {
3425 __kmp_acquire_bootstrap_lock(&__kmp_task_team_lock);
3426 if (__kmp_free_task_teams != NULL) {
3427 task_team = __kmp_free_task_teams;
3428 TCW_PTR(__kmp_free_task_teams, task_team->tt.tt_next);
3429 task_team->tt.tt_next = NULL;
3431 __kmp_release_bootstrap_lock(&__kmp_task_team_lock);
3434 if (task_team == NULL) {
3435 KE_TRACE(10, (
"__kmp_allocate_task_team: T#%d allocating "
3436 "task team for team %p\n",
3437 __kmp_gtid_from_thread(thread), team));
3440 task_team = (kmp_task_team_t *)__kmp_allocate(
sizeof(kmp_task_team_t));
3441 __kmp_init_bootstrap_lock(&task_team->tt.tt_threads_lock);
3442 #if USE_ITT_BUILD && USE_ITT_NOTIFY && KMP_DEBUG
3445 __itt_suppress_mark_range(
3446 __itt_suppress_range, __itt_suppress_threading_errors,
3447 &task_team->tt.tt_found_tasks,
sizeof(task_team->tt.tt_found_tasks));
3448 __itt_suppress_mark_range(__itt_suppress_range,
3449 __itt_suppress_threading_errors,
3450 CCAST(kmp_uint32 *, &task_team->tt.tt_active),
3451 sizeof(task_team->tt.tt_active));
3459 TCW_4(task_team->tt.tt_found_tasks, FALSE);
3460 TCW_4(task_team->tt.tt_found_proxy_tasks, FALSE);
3461 task_team->tt.tt_nproc = nthreads = team->t.t_nproc;
3463 KMP_ATOMIC_ST_REL(&task_team->tt.tt_unfinished_threads, nthreads);
3464 TCW_4(task_team->tt.tt_hidden_helper_task_encountered, FALSE);
3465 TCW_4(task_team->tt.tt_active, TRUE);
3467 KA_TRACE(20, (
"__kmp_allocate_task_team: T#%d exiting; task_team = %p "
3468 "unfinished_threads init'd to %d\n",
3469 (thread ? __kmp_gtid_from_thread(thread) : -1), task_team,
3470 KMP_ATOMIC_LD_RLX(&task_team->tt.tt_unfinished_threads)));
3477 void __kmp_free_task_team(kmp_info_t *thread, kmp_task_team_t *task_team) {
3478 KA_TRACE(20, (
"__kmp_free_task_team: T#%d task_team = %p\n",
3479 thread ? __kmp_gtid_from_thread(thread) : -1, task_team));
3482 __kmp_acquire_bootstrap_lock(&__kmp_task_team_lock);
3484 KMP_DEBUG_ASSERT(task_team->tt.tt_next == NULL);
3485 task_team->tt.tt_next = __kmp_free_task_teams;
3486 TCW_PTR(__kmp_free_task_teams, task_team);
3488 __kmp_release_bootstrap_lock(&__kmp_task_team_lock);
3496 void __kmp_reap_task_teams(
void) {
3497 kmp_task_team_t *task_team;
3499 if (TCR_PTR(__kmp_free_task_teams) != NULL) {
3501 __kmp_acquire_bootstrap_lock(&__kmp_task_team_lock);
3502 while ((task_team = __kmp_free_task_teams) != NULL) {
3503 __kmp_free_task_teams = task_team->tt.tt_next;
3504 task_team->tt.tt_next = NULL;
3507 if (task_team->tt.tt_threads_data != NULL) {
3508 __kmp_free_task_threads_data(task_team);
3510 __kmp_free(task_team);
3512 __kmp_release_bootstrap_lock(&__kmp_task_team_lock);
3519 void __kmp_wait_to_unref_task_teams(
void) {
3524 KMP_INIT_YIELD(spins);
3532 for (thread = CCAST(kmp_info_t *, __kmp_thread_pool); thread != NULL;
3533 thread = thread->th.th_next_pool) {
3537 if (TCR_PTR(thread->th.th_task_team) == NULL) {
3538 KA_TRACE(10, (
"__kmp_wait_to_unref_task_team: T#%d task_team == NULL\n",
3539 __kmp_gtid_from_thread(thread)));
3544 if (!__kmp_is_thread_alive(thread, &exit_val)) {
3545 thread->th.th_task_team = NULL;
3552 KA_TRACE(10, (
"__kmp_wait_to_unref_task_team: Waiting for T#%d to "
3553 "unreference task_team\n",
3554 __kmp_gtid_from_thread(thread)));
3556 if (__kmp_dflt_blocktime != KMP_MAX_BLOCKTIME) {
3557 volatile void *sleep_loc;
3559 if ((sleep_loc = TCR_PTR(CCAST(
void *, thread->th.th_sleep_loc))) !=
3563 (
"__kmp_wait_to_unref_task_team: T#%d waking up thread T#%d\n",
3564 __kmp_gtid_from_thread(thread), __kmp_gtid_from_thread(thread)));
3565 __kmp_null_resume_wrapper(__kmp_gtid_from_thread(thread), sleep_loc);
3574 KMP_YIELD_OVERSUB_ELSE_SPIN(spins);
3580 void __kmp_task_team_setup(kmp_info_t *this_thr, kmp_team_t *team,
int always) {
3581 KMP_DEBUG_ASSERT(__kmp_tasking_mode != tskm_immediate_exec);
3587 if (team->t.t_task_team[this_thr->th.th_task_state] == NULL &&
3588 (always || team->t.t_nproc > 1)) {
3589 team->t.t_task_team[this_thr->th.th_task_state] =
3590 __kmp_allocate_task_team(this_thr, team);
3591 KA_TRACE(20, (
"__kmp_task_team_setup: Primary T#%d created new task_team %p"
3592 " for team %d at parity=%d\n",
3593 __kmp_gtid_from_thread(this_thr),
3594 team->t.t_task_team[this_thr->th.th_task_state], team->t.t_id,
3595 this_thr->th.th_task_state));
3605 if (team->t.t_nproc > 1) {
3606 int other_team = 1 - this_thr->th.th_task_state;
3607 KMP_DEBUG_ASSERT(other_team >= 0 && other_team < 2);
3608 if (team->t.t_task_team[other_team] == NULL) {
3609 team->t.t_task_team[other_team] =
3610 __kmp_allocate_task_team(this_thr, team);
3611 KA_TRACE(20, (
"__kmp_task_team_setup: Primary T#%d created second new "
3612 "task_team %p for team %d at parity=%d\n",
3613 __kmp_gtid_from_thread(this_thr),
3614 team->t.t_task_team[other_team], team->t.t_id, other_team));
3617 kmp_task_team_t *task_team = team->t.t_task_team[other_team];
3618 if (!task_team->tt.tt_active ||
3619 team->t.t_nproc != task_team->tt.tt_nproc) {
3620 TCW_4(task_team->tt.tt_nproc, team->t.t_nproc);
3621 TCW_4(task_team->tt.tt_found_tasks, FALSE);
3622 TCW_4(task_team->tt.tt_found_proxy_tasks, FALSE);
3623 KMP_ATOMIC_ST_REL(&task_team->tt.tt_unfinished_threads,
3625 TCW_4(task_team->tt.tt_active, TRUE);
3629 KA_TRACE(20, (
"__kmp_task_team_setup: Primary T#%d reset next task_team "
3630 "%p for team %d at parity=%d\n",
3631 __kmp_gtid_from_thread(this_thr),
3632 team->t.t_task_team[other_team], team->t.t_id, other_team));
3640 if (this_thr == __kmp_hidden_helper_main_thread) {
3641 for (
int i = 0; i < 2; ++i) {
3642 kmp_task_team_t *task_team = team->t.t_task_team[i];
3643 if (KMP_TASKING_ENABLED(task_team)) {
3646 __kmp_enable_tasking(task_team, this_thr);
3647 for (
int j = 0; j < task_team->tt.tt_nproc; ++j) {
3648 kmp_thread_data_t *thread_data = &task_team->tt.tt_threads_data[j];
3649 if (thread_data->td.td_deque == NULL) {
3650 __kmp_alloc_task_deque(__kmp_hidden_helper_threads[j], thread_data);
3660 void __kmp_task_team_sync(kmp_info_t *this_thr, kmp_team_t *team) {
3661 KMP_DEBUG_ASSERT(__kmp_tasking_mode != tskm_immediate_exec);
3665 this_thr->th.th_task_state = (kmp_uint8)(1 - this_thr->th.th_task_state);
3669 TCW_PTR(this_thr->th.th_task_team,
3670 team->t.t_task_team[this_thr->th.th_task_state]);
3672 (
"__kmp_task_team_sync: Thread T#%d task team switched to task_team "
3673 "%p from Team #%d (parity=%d)\n",
3674 __kmp_gtid_from_thread(this_thr), this_thr->th.th_task_team,
3675 team->t.t_id, this_thr->th.th_task_state));
3685 void __kmp_task_team_wait(
3686 kmp_info_t *this_thr,
3687 kmp_team_t *team USE_ITT_BUILD_ARG(
void *itt_sync_obj),
int wait) {
3688 kmp_task_team_t *task_team = team->t.t_task_team[this_thr->th.th_task_state];
3690 KMP_DEBUG_ASSERT(__kmp_tasking_mode != tskm_immediate_exec);
3691 KMP_DEBUG_ASSERT(task_team == this_thr->th.th_task_team);
3693 if ((task_team != NULL) && KMP_TASKING_ENABLED(task_team)) {
3695 KA_TRACE(20, (
"__kmp_task_team_wait: Primary T#%d waiting for all tasks "
3696 "(for unfinished_threads to reach 0) on task_team = %p\n",
3697 __kmp_gtid_from_thread(this_thr), task_team));
3701 kmp_flag_32<false, false> flag(
3702 RCAST(std::atomic<kmp_uint32> *,
3703 &task_team->tt.tt_unfinished_threads),
3705 flag.wait(this_thr, TRUE USE_ITT_BUILD_ARG(itt_sync_obj));
3711 (
"__kmp_task_team_wait: Primary T#%d deactivating task_team %p: "
3712 "setting active to false, setting local and team's pointer to NULL\n",
3713 __kmp_gtid_from_thread(this_thr), task_team));
3714 KMP_DEBUG_ASSERT(task_team->tt.tt_nproc > 1 ||
3715 task_team->tt.tt_found_proxy_tasks == TRUE);
3716 TCW_SYNC_4(task_team->tt.tt_found_proxy_tasks, FALSE);
3717 KMP_CHECK_UPDATE(task_team->tt.tt_untied_task_encountered, 0);
3718 TCW_SYNC_4(task_team->tt.tt_active, FALSE);
3721 TCW_PTR(this_thr->th.th_task_team, NULL);
3730 void __kmp_tasking_barrier(kmp_team_t *team, kmp_info_t *thread,
int gtid) {
3731 std::atomic<kmp_uint32> *spin = RCAST(
3732 std::atomic<kmp_uint32> *,
3733 &team->t.t_task_team[thread->th.th_task_state]->tt.tt_unfinished_threads);
3735 KMP_DEBUG_ASSERT(__kmp_tasking_mode == tskm_extra_barrier);
3738 KMP_FSYNC_SPIN_INIT(spin, NULL);
3740 kmp_flag_32<false, false> spin_flag(spin, 0U);
3741 while (!spin_flag.execute_tasks(thread, gtid, TRUE,
3742 &flag USE_ITT_BUILD_ARG(NULL), 0)) {
3745 KMP_FSYNC_SPIN_PREPARE(RCAST(
void *, spin));
3748 if (TCR_4(__kmp_global.g.g_done)) {
3749 if (__kmp_global.g.g_abort)
3750 __kmp_abort_thread();
3756 KMP_FSYNC_SPIN_ACQUIRED(RCAST(
void *, spin));
3765 static bool __kmp_give_task(kmp_info_t *thread, kmp_int32 tid, kmp_task_t *task,
3767 kmp_taskdata_t *taskdata = KMP_TASK_TO_TASKDATA(task);
3768 kmp_task_team_t *task_team = taskdata->td_task_team;
3770 KA_TRACE(20, (
"__kmp_give_task: trying to give task %p to thread %d.\n",
3774 KMP_DEBUG_ASSERT(task_team != NULL);
3776 bool result =
false;
3777 kmp_thread_data_t *thread_data = &task_team->tt.tt_threads_data[tid];
3779 if (thread_data->td.td_deque == NULL) {
3783 (
"__kmp_give_task: thread %d has no queue while giving task %p.\n",
3788 if (TCR_4(thread_data->td.td_deque_ntasks) >=
3789 TASK_DEQUE_SIZE(thread_data->td)) {
3792 (
"__kmp_give_task: queue is full while giving task %p to thread %d.\n",
3797 if (TASK_DEQUE_SIZE(thread_data->td) / INITIAL_TASK_DEQUE_SIZE >= pass)
3800 __kmp_acquire_bootstrap_lock(&thread_data->td.td_deque_lock);
3801 if (TCR_4(thread_data->td.td_deque_ntasks) >=
3802 TASK_DEQUE_SIZE(thread_data->td)) {
3804 __kmp_realloc_task_deque(thread, thread_data);
3809 __kmp_acquire_bootstrap_lock(&thread_data->td.td_deque_lock);
3811 if (TCR_4(thread_data->td.td_deque_ntasks) >=
3812 TASK_DEQUE_SIZE(thread_data->td)) {
3813 KA_TRACE(30, (
"__kmp_give_task: queue is full while giving task %p to "
3819 if (TASK_DEQUE_SIZE(thread_data->td) / INITIAL_TASK_DEQUE_SIZE >= pass)
3820 goto release_and_exit;
3822 __kmp_realloc_task_deque(thread, thread_data);
3828 thread_data->td.td_deque[thread_data->td.td_deque_tail] = taskdata;
3830 thread_data->td.td_deque_tail =
3831 (thread_data->td.td_deque_tail + 1) & TASK_DEQUE_MASK(thread_data->td);
3832 TCW_4(thread_data->td.td_deque_ntasks,
3833 TCR_4(thread_data->td.td_deque_ntasks) + 1);
3836 KA_TRACE(30, (
"__kmp_give_task: successfully gave task %p to thread %d.\n",
3840 __kmp_release_bootstrap_lock(&thread_data->td.td_deque_lock);
3861 static void __kmp_first_top_half_finish_proxy(kmp_taskdata_t *taskdata) {
3862 KMP_DEBUG_ASSERT(taskdata->td_flags.tasktype == TASK_EXPLICIT);
3863 KMP_DEBUG_ASSERT(taskdata->td_flags.proxy == TASK_PROXY);
3864 KMP_DEBUG_ASSERT(taskdata->td_flags.complete == 0);
3865 KMP_DEBUG_ASSERT(taskdata->td_flags.freed == 0);
3867 taskdata->td_flags.complete = 1;
3869 if (taskdata->td_taskgroup)
3870 KMP_ATOMIC_DEC(&taskdata->td_taskgroup->count);
3874 KMP_ATOMIC_INC(&taskdata->td_incomplete_child_tasks);
3877 static void __kmp_second_top_half_finish_proxy(kmp_taskdata_t *taskdata) {
3878 kmp_int32 children = 0;
3882 KMP_ATOMIC_DEC(&taskdata->td_parent->td_incomplete_child_tasks) - 1;
3883 KMP_DEBUG_ASSERT(children >= 0);
3886 KMP_ATOMIC_DEC(&taskdata->td_incomplete_child_tasks);
3889 static void __kmp_bottom_half_finish_proxy(kmp_int32 gtid, kmp_task_t *ptask) {
3890 kmp_taskdata_t *taskdata = KMP_TASK_TO_TASKDATA(ptask);
3891 kmp_info_t *thread = __kmp_threads[gtid];
3893 KMP_DEBUG_ASSERT(taskdata->td_flags.proxy == TASK_PROXY);
3894 KMP_DEBUG_ASSERT(taskdata->td_flags.complete ==
3899 while (KMP_ATOMIC_LD_ACQ(&taskdata->td_incomplete_child_tasks) > 0)
3902 __kmp_release_deps(gtid, taskdata);
3903 __kmp_free_task_and_ancestors(gtid, taskdata, thread);
3915 KMP_DEBUG_ASSERT(ptask != NULL);
3916 kmp_taskdata_t *taskdata = KMP_TASK_TO_TASKDATA(ptask);
3918 10, (
"__kmp_proxy_task_completed(enter): T#%d proxy task %p completing\n",
3920 __kmp_assert_valid_gtid(gtid);
3921 KMP_DEBUG_ASSERT(taskdata->td_flags.proxy == TASK_PROXY);
3923 __kmp_first_top_half_finish_proxy(taskdata);
3924 __kmp_second_top_half_finish_proxy(taskdata);
3925 __kmp_bottom_half_finish_proxy(gtid, ptask);
3928 (
"__kmp_proxy_task_completed(exit): T#%d proxy task %p completing\n",
3940 KMP_DEBUG_ASSERT(ptask != NULL);
3941 kmp_taskdata_t *taskdata = KMP_TASK_TO_TASKDATA(ptask);
3945 (
"__kmp_proxy_task_completed_ooo(enter): proxy task completing ooo %p\n",
3948 KMP_DEBUG_ASSERT(taskdata->td_flags.proxy == TASK_PROXY);
3950 __kmp_first_top_half_finish_proxy(taskdata);
3954 kmp_team_t *team = taskdata->td_team;
3955 kmp_int32 nthreads = team->t.t_nproc;
3960 kmp_int32 start_k = 0;
3962 kmp_int32 k = start_k;
3966 thread = team->t.t_threads[k];
3967 k = (k + 1) % nthreads;
3973 }
while (!__kmp_give_task(thread, k, ptask, pass));
3975 __kmp_second_top_half_finish_proxy(taskdata);
3979 (
"__kmp_proxy_task_completed_ooo(exit): proxy task completing ooo %p\n",
3983 kmp_event_t *__kmpc_task_allow_completion_event(
ident_t *loc_ref,
int gtid,
3985 kmp_taskdata_t *td = KMP_TASK_TO_TASKDATA(task);
3986 if (td->td_allow_completion_event.type == KMP_EVENT_UNINITIALIZED) {
3987 td->td_allow_completion_event.type = KMP_EVENT_ALLOW_COMPLETION;
3988 td->td_allow_completion_event.ed.task = task;
3989 __kmp_init_tas_lock(&td->td_allow_completion_event.lock);
3991 return &td->td_allow_completion_event;
3994 void __kmp_fulfill_event(kmp_event_t *event) {
3995 if (event->type == KMP_EVENT_ALLOW_COMPLETION) {
3996 kmp_task_t *ptask = event->ed.task;
3997 kmp_taskdata_t *taskdata = KMP_TASK_TO_TASKDATA(ptask);
3998 bool detached =
false;
3999 int gtid = __kmp_get_gtid();
4004 __kmp_acquire_tas_lock(&event->lock, gtid);
4005 if (taskdata->td_flags.proxy == TASK_PROXY) {
4011 if (UNLIKELY(ompt_enabled.enabled))
4012 __ompt_task_finish(ptask, NULL, ompt_task_early_fulfill);
4015 event->type = KMP_EVENT_UNINITIALIZED;
4016 __kmp_release_tas_lock(&event->lock, gtid);
4022 if (UNLIKELY(ompt_enabled.enabled))
4023 __ompt_task_finish(ptask, NULL, ompt_task_late_fulfill);
4027 kmp_team_t *team = taskdata->td_team;
4028 kmp_info_t *thread = __kmp_get_thread();
4029 if (thread->th.th_team == team) {
4047 kmp_task_t *__kmp_task_dup_alloc(kmp_info_t *thread, kmp_task_t *task_src) {
4049 kmp_taskdata_t *taskdata;
4050 kmp_taskdata_t *taskdata_src = KMP_TASK_TO_TASKDATA(task_src);
4051 kmp_taskdata_t *parent_task = taskdata_src->td_parent;
4052 size_t shareds_offset;
4055 KA_TRACE(10, (
"__kmp_task_dup_alloc(enter): Th %p, source task %p\n", thread,
4057 KMP_DEBUG_ASSERT(taskdata_src->td_flags.proxy ==
4059 KMP_DEBUG_ASSERT(taskdata_src->td_flags.tasktype == TASK_EXPLICIT);
4060 task_size = taskdata_src->td_size_alloc;
4063 KA_TRACE(30, (
"__kmp_task_dup_alloc: Th %p, malloc size %ld\n", thread,
4066 taskdata = (kmp_taskdata_t *)__kmp_fast_allocate(thread, task_size);
4068 taskdata = (kmp_taskdata_t *)__kmp_thread_malloc(thread, task_size);
4070 KMP_MEMCPY(taskdata, taskdata_src, task_size);
4072 task = KMP_TASKDATA_TO_TASK(taskdata);
4075 taskdata->td_task_id = KMP_GEN_TASK_ID();
4076 if (task->shareds != NULL) {
4077 shareds_offset = (
char *)task_src->shareds - (
char *)taskdata_src;
4078 task->shareds = &((
char *)taskdata)[shareds_offset];
4079 KMP_DEBUG_ASSERT((((kmp_uintptr_t)task->shareds) & (
sizeof(
void *) - 1)) ==
4082 taskdata->td_alloc_thread = thread;
4083 taskdata->td_parent = parent_task;
4085 taskdata->td_taskgroup = parent_task->td_taskgroup;
4088 if (taskdata->td_flags.tiedness == TASK_TIED)
4089 taskdata->td_last_tied = taskdata;
4093 if (!(taskdata->td_flags.team_serial || taskdata->td_flags.tasking_ser)) {
4094 KMP_ATOMIC_INC(&parent_task->td_incomplete_child_tasks);
4095 if (parent_task->td_taskgroup)
4096 KMP_ATOMIC_INC(&parent_task->td_taskgroup->count);
4099 if (taskdata->td_parent->td_flags.tasktype == TASK_EXPLICIT)
4100 KMP_ATOMIC_INC(&taskdata->td_parent->td_allocated_child_tasks);
4104 (
"__kmp_task_dup_alloc(exit): Th %p, created task %p, parent=%p\n",
4105 thread, taskdata, taskdata->td_parent));
4107 if (UNLIKELY(ompt_enabled.enabled))
4108 __ompt_task_init(taskdata, thread->th.th_info.ds.ds_gtid);
4117 typedef void (*p_task_dup_t)(kmp_task_t *, kmp_task_t *, kmp_int32);
4119 KMP_BUILD_ASSERT(
sizeof(
long) == 4 ||
sizeof(
long) == 8);
4124 class kmp_taskloop_bounds_t {
4126 const kmp_taskdata_t *taskdata;
4127 size_t lower_offset;
4128 size_t upper_offset;
4131 kmp_taskloop_bounds_t(kmp_task_t *_task, kmp_uint64 *lb, kmp_uint64 *ub)
4132 : task(_task), taskdata(KMP_TASK_TO_TASKDATA(task)),
4133 lower_offset((char *)lb - (char *)task),
4134 upper_offset((char *)ub - (char *)task) {
4135 KMP_DEBUG_ASSERT((
char *)lb > (
char *)_task);
4136 KMP_DEBUG_ASSERT((
char *)ub > (
char *)_task);
4138 kmp_taskloop_bounds_t(kmp_task_t *_task,
const kmp_taskloop_bounds_t &bounds)
4139 : task(_task), taskdata(KMP_TASK_TO_TASKDATA(_task)),
4140 lower_offset(bounds.lower_offset), upper_offset(bounds.upper_offset) {}
4141 size_t get_lower_offset()
const {
return lower_offset; }
4142 size_t get_upper_offset()
const {
return upper_offset; }
4143 kmp_uint64 get_lb()
const {
4145 #if defined(KMP_GOMP_COMPAT)
4147 if (!taskdata->td_flags.native) {
4148 retval = *(kmp_int64 *)((
char *)task + lower_offset);
4151 if (taskdata->td_size_loop_bounds == 4) {
4152 kmp_int32 *lb = RCAST(kmp_int32 *, task->shareds);
4153 retval = (kmp_int64)*lb;
4155 kmp_int64 *lb = RCAST(kmp_int64 *, task->shareds);
4156 retval = (kmp_int64)*lb;
4161 retval = *(kmp_int64 *)((
char *)task + lower_offset);
4165 kmp_uint64 get_ub()
const {
4167 #if defined(KMP_GOMP_COMPAT)
4169 if (!taskdata->td_flags.native) {
4170 retval = *(kmp_int64 *)((
char *)task + upper_offset);
4173 if (taskdata->td_size_loop_bounds == 4) {
4174 kmp_int32 *ub = RCAST(kmp_int32 *, task->shareds) + 1;
4175 retval = (kmp_int64)*ub;
4177 kmp_int64 *ub = RCAST(kmp_int64 *, task->shareds) + 1;
4178 retval = (kmp_int64)*ub;
4182 retval = *(kmp_int64 *)((
char *)task + upper_offset);
4186 void set_lb(kmp_uint64 lb) {
4187 #if defined(KMP_GOMP_COMPAT)
4189 if (!taskdata->td_flags.native) {
4190 *(kmp_uint64 *)((
char *)task + lower_offset) = lb;
4193 if (taskdata->td_size_loop_bounds == 4) {
4194 kmp_uint32 *lower = RCAST(kmp_uint32 *, task->shareds);
4195 *lower = (kmp_uint32)lb;
4197 kmp_uint64 *lower = RCAST(kmp_uint64 *, task->shareds);
4198 *lower = (kmp_uint64)lb;
4202 *(kmp_uint64 *)((
char *)task + lower_offset) = lb;
4205 void set_ub(kmp_uint64 ub) {
4206 #if defined(KMP_GOMP_COMPAT)
4208 if (!taskdata->td_flags.native) {
4209 *(kmp_uint64 *)((
char *)task + upper_offset) = ub;
4212 if (taskdata->td_size_loop_bounds == 4) {
4213 kmp_uint32 *upper = RCAST(kmp_uint32 *, task->shareds) + 1;
4214 *upper = (kmp_uint32)ub;
4216 kmp_uint64 *upper = RCAST(kmp_uint64 *, task->shareds) + 1;
4217 *upper = (kmp_uint64)ub;
4221 *(kmp_uint64 *)((
char *)task + upper_offset) = ub;
4242 void __kmp_taskloop_linear(
ident_t *loc,
int gtid, kmp_task_t *task,
4243 kmp_uint64 *lb, kmp_uint64 *ub, kmp_int64 st,
4244 kmp_uint64 ub_glob, kmp_uint64 num_tasks,
4245 kmp_uint64 grainsize, kmp_uint64 extras,
4246 kmp_int64 last_chunk, kmp_uint64 tc,
4252 KMP_TIME_PARTITIONED_BLOCK(OMP_taskloop_scheduling);
4253 p_task_dup_t ptask_dup = (p_task_dup_t)task_dup;
4255 kmp_taskloop_bounds_t task_bounds(task, lb, ub);
4256 kmp_uint64 lower = task_bounds.get_lb();
4257 kmp_uint64 upper = task_bounds.get_ub();
4259 kmp_info_t *thread = __kmp_threads[gtid];
4260 kmp_taskdata_t *current_task = thread->th.th_current_task;
4261 kmp_task_t *next_task;
4262 kmp_int32 lastpriv = 0;
4264 KMP_DEBUG_ASSERT(tc == num_tasks * grainsize +
4265 (last_chunk < 0 ? last_chunk : extras));
4266 KMP_DEBUG_ASSERT(num_tasks > extras);
4267 KMP_DEBUG_ASSERT(num_tasks > 0);
4268 KA_TRACE(20, (
"__kmp_taskloop_linear: T#%d: %lld tasks, grainsize %lld, "
4269 "extras %lld, last_chunk %lld, i=%lld,%lld(%d)%lld, dup %p\n",
4270 gtid, num_tasks, grainsize, extras, last_chunk, lower, upper,
4271 ub_glob, st, task_dup));
4274 for (i = 0; i < num_tasks; ++i) {
4275 kmp_uint64 chunk_minus_1;
4277 chunk_minus_1 = grainsize - 1;
4279 chunk_minus_1 = grainsize;
4282 upper = lower + st * chunk_minus_1;
4286 if (i == num_tasks - 1) {
4289 KMP_DEBUG_ASSERT(upper == *ub);
4290 if (upper == ub_glob)
4292 }
else if (st > 0) {
4293 KMP_DEBUG_ASSERT((kmp_uint64)st > *ub - upper);
4294 if ((kmp_uint64)st > ub_glob - upper)
4297 KMP_DEBUG_ASSERT(upper + st < *ub);
4298 if (upper - ub_glob < (kmp_uint64)(-st))
4302 next_task = __kmp_task_dup_alloc(thread, task);
4303 kmp_taskdata_t *next_taskdata = KMP_TASK_TO_TASKDATA(next_task);
4304 kmp_taskloop_bounds_t next_task_bounds =
4305 kmp_taskloop_bounds_t(next_task, task_bounds);
4308 next_task_bounds.set_lb(lower);
4309 if (next_taskdata->td_flags.native) {
4310 next_task_bounds.set_ub(upper + (st > 0 ? 1 : -1));
4312 next_task_bounds.set_ub(upper);
4314 if (ptask_dup != NULL)
4316 ptask_dup(next_task, task, lastpriv);
4318 (
"__kmp_taskloop_linear: T#%d; task #%llu: task %p: lower %lld, "
4319 "upper %lld stride %lld, (offsets %p %p)\n",
4320 gtid, i, next_task, lower, upper, st,
4321 next_task_bounds.get_lower_offset(),
4322 next_task_bounds.get_upper_offset()));
4324 __kmp_omp_taskloop_task(NULL, gtid, next_task,
4327 __kmp_omp_task(gtid, next_task,
true);
4332 __kmp_task_start(gtid, task, current_task);
4334 __kmp_task_finish<false>(gtid, task, current_task);
4339 typedef struct __taskloop_params {
4346 kmp_uint64 num_tasks;
4347 kmp_uint64 grainsize;
4349 kmp_int64 last_chunk;
4351 kmp_uint64 num_t_min;
4355 } __taskloop_params_t;
4357 void __kmp_taskloop_recur(
ident_t *,
int, kmp_task_t *, kmp_uint64 *,
4358 kmp_uint64 *, kmp_int64, kmp_uint64, kmp_uint64,
4359 kmp_uint64, kmp_uint64, kmp_int64, kmp_uint64,
4367 int __kmp_taskloop_task(
int gtid,
void *ptask) {
4368 __taskloop_params_t *p =
4369 (__taskloop_params_t *)((kmp_task_t *)ptask)->shareds;
4370 kmp_task_t *task = p->task;
4371 kmp_uint64 *lb = p->lb;
4372 kmp_uint64 *ub = p->ub;
4373 void *task_dup = p->task_dup;
4375 kmp_int64 st = p->st;
4376 kmp_uint64 ub_glob = p->ub_glob;
4377 kmp_uint64 num_tasks = p->num_tasks;
4378 kmp_uint64 grainsize = p->grainsize;
4379 kmp_uint64 extras = p->extras;
4380 kmp_int64 last_chunk = p->last_chunk;
4381 kmp_uint64 tc = p->tc;
4382 kmp_uint64 num_t_min = p->num_t_min;
4384 void *codeptr_ra = p->codeptr_ra;
4387 kmp_taskdata_t *taskdata = KMP_TASK_TO_TASKDATA(task);
4388 KMP_DEBUG_ASSERT(task != NULL);
4390 (
"__kmp_taskloop_task: T#%d, task %p: %lld tasks, grainsize"
4391 " %lld, extras %lld, last_chunk %lld, i=%lld,%lld(%d), dup %p\n",
4392 gtid, taskdata, num_tasks, grainsize, extras, last_chunk, *lb, *ub,
4395 KMP_DEBUG_ASSERT(num_tasks * 2 + 1 > num_t_min);
4396 if (num_tasks > num_t_min)
4397 __kmp_taskloop_recur(NULL, gtid, task, lb, ub, st, ub_glob, num_tasks,
4398 grainsize, extras, last_chunk, tc, num_t_min,
4404 __kmp_taskloop_linear(NULL, gtid, task, lb, ub, st, ub_glob, num_tasks,
4405 grainsize, extras, last_chunk, tc,
4411 KA_TRACE(40, (
"__kmp_taskloop_task(exit): T#%d\n", gtid));
4433 void __kmp_taskloop_recur(
ident_t *loc,
int gtid, kmp_task_t *task,
4434 kmp_uint64 *lb, kmp_uint64 *ub, kmp_int64 st,
4435 kmp_uint64 ub_glob, kmp_uint64 num_tasks,
4436 kmp_uint64 grainsize, kmp_uint64 extras,
4437 kmp_int64 last_chunk, kmp_uint64 tc,
4438 kmp_uint64 num_t_min,
4443 kmp_taskdata_t *taskdata = KMP_TASK_TO_TASKDATA(task);
4444 KMP_DEBUG_ASSERT(task != NULL);
4445 KMP_DEBUG_ASSERT(num_tasks > num_t_min);
4447 (
"__kmp_taskloop_recur: T#%d, task %p: %lld tasks, grainsize"
4448 " %lld, extras %lld, last_chunk %lld, i=%lld,%lld(%d), dup %p\n",
4449 gtid, taskdata, num_tasks, grainsize, extras, last_chunk, *lb, *ub,
4451 p_task_dup_t ptask_dup = (p_task_dup_t)task_dup;
4452 kmp_uint64 lower = *lb;
4453 kmp_info_t *thread = __kmp_threads[gtid];
4455 kmp_task_t *next_task;
4456 size_t lower_offset =
4457 (
char *)lb - (
char *)task;
4458 size_t upper_offset =
4459 (
char *)ub - (
char *)task;
4461 KMP_DEBUG_ASSERT(tc == num_tasks * grainsize +
4462 (last_chunk < 0 ? last_chunk : extras));
4463 KMP_DEBUG_ASSERT(num_tasks > extras);
4464 KMP_DEBUG_ASSERT(num_tasks > 0);
4467 kmp_uint64 lb1, ub0, tc0, tc1, ext0, ext1;
4468 kmp_int64 last_chunk0 = 0, last_chunk1 = 0;
4469 kmp_uint64 gr_size0 = grainsize;
4470 kmp_uint64 n_tsk0 = num_tasks >> 1;
4471 kmp_uint64 n_tsk1 = num_tasks - n_tsk0;
4472 if (last_chunk < 0) {
4474 last_chunk1 = last_chunk;
4475 tc0 = grainsize * n_tsk0;
4477 }
else if (n_tsk0 <= extras) {
4480 ext1 = extras - n_tsk0;
4481 tc0 = gr_size0 * n_tsk0;
4486 tc1 = grainsize * n_tsk1;
4489 ub0 = lower + st * (tc0 - 1);
4493 next_task = __kmp_task_dup_alloc(thread, task);
4495 *(kmp_uint64 *)((
char *)next_task + lower_offset) = lb1;
4496 if (ptask_dup != NULL)
4497 ptask_dup(next_task, task, 0);
4502 kmp_taskdata_t *current_task = thread->th.th_current_task;
4503 thread->th.th_current_task = taskdata->td_parent;
4504 kmp_task_t *new_task =
4505 __kmpc_omp_task_alloc(loc, gtid, 1, 3 *
sizeof(
void *),
4506 sizeof(__taskloop_params_t), &__kmp_taskloop_task);
4508 thread->th.th_current_task = current_task;
4509 __taskloop_params_t *p = (__taskloop_params_t *)new_task->shareds;
4510 p->task = next_task;
4511 p->lb = (kmp_uint64 *)((
char *)next_task + lower_offset);
4512 p->ub = (kmp_uint64 *)((
char *)next_task + upper_offset);
4513 p->task_dup = task_dup;
4515 p->ub_glob = ub_glob;
4516 p->num_tasks = n_tsk1;
4517 p->grainsize = grainsize;
4519 p->last_chunk = last_chunk1;
4521 p->num_t_min = num_t_min;
4523 p->codeptr_ra = codeptr_ra;
4528 __kmp_omp_taskloop_task(NULL, gtid, new_task, codeptr_ra);
4530 __kmp_omp_task(gtid, new_task,
true);
4534 if (n_tsk0 > num_t_min)
4535 __kmp_taskloop_recur(loc, gtid, task, lb, ub, st, ub_glob, n_tsk0, gr_size0,
4536 ext0, last_chunk0, tc0, num_t_min,
4542 __kmp_taskloop_linear(loc, gtid, task, lb, ub, st, ub_glob, n_tsk0,
4543 gr_size0, ext0, last_chunk0, tc0,
4549 KA_TRACE(40, (
"__kmp_taskloop_recur(exit): T#%d\n", gtid));
4552 static void __kmp_taskloop(
ident_t *loc,
int gtid, kmp_task_t *task,
int if_val,
4553 kmp_uint64 *lb, kmp_uint64 *ub, kmp_int64 st,
4554 int nogroup,
int sched, kmp_uint64 grainsize,
4555 int modifier,
void *task_dup) {
4556 kmp_taskdata_t *taskdata = KMP_TASK_TO_TASKDATA(task);
4557 KMP_DEBUG_ASSERT(task != NULL);
4559 #if OMPT_SUPPORT && OMPT_OPTIONAL
4560 OMPT_STORE_RETURN_ADDRESS(gtid);
4562 __kmpc_taskgroup(loc, gtid);
4567 kmp_taskloop_bounds_t task_bounds(task, lb, ub);
4570 kmp_uint64 lower = task_bounds.get_lb();
4571 kmp_uint64 upper = task_bounds.get_ub();
4572 kmp_uint64 ub_glob = upper;
4573 kmp_uint64 num_tasks = 0, extras = 0;
4574 kmp_int64 last_chunk =
4576 kmp_uint64 num_tasks_min = __kmp_taskloop_min_tasks;
4577 kmp_info_t *thread = __kmp_threads[gtid];
4578 kmp_taskdata_t *current_task = thread->th.th_current_task;
4580 KA_TRACE(20, (
"__kmp_taskloop: T#%d, task %p, lb %lld, ub %lld, st %lld, "
4581 "grain %llu(%d, %d), dup %p\n",
4582 gtid, taskdata, lower, upper, st, grainsize, sched, modifier,
4587 tc = upper - lower + 1;
4588 }
else if (st < 0) {
4589 tc = (lower - upper) / (-st) + 1;
4591 tc = (upper - lower) / st + 1;
4594 KA_TRACE(20, (
"__kmp_taskloop(exit): T#%d zero-trip loop\n", gtid));
4596 __kmp_task_start(gtid, task, current_task);
4598 __kmp_task_finish<false>(gtid, task, current_task);
4602 #if OMPT_SUPPORT && OMPT_OPTIONAL
4603 ompt_team_info_t *team_info = __ompt_get_teaminfo(0, NULL);
4604 ompt_task_info_t *task_info = __ompt_get_task_info_object(0);
4605 if (ompt_enabled.ompt_callback_work) {
4606 ompt_callbacks.ompt_callback(ompt_callback_work)(
4607 ompt_work_taskloop, ompt_scope_begin, &(team_info->parallel_data),
4608 &(task_info->task_data), tc, OMPT_GET_RETURN_ADDRESS(0));
4612 if (num_tasks_min == 0)
4615 KMP_MIN(thread->th.th_team_nproc * 10, INITIAL_TASK_DEQUE_SIZE);
4621 grainsize = thread->th.th_team_nproc * 10;
4624 if (grainsize > tc) {
4629 num_tasks = grainsize;
4630 grainsize = tc / num_tasks;
4631 extras = tc % num_tasks;
4635 if (grainsize > tc) {
4641 num_tasks = (tc + grainsize - 1) / grainsize;
4642 last_chunk = tc - (num_tasks * grainsize);
4645 num_tasks = tc / grainsize;
4647 grainsize = tc / num_tasks;
4648 extras = tc % num_tasks;
4653 KMP_ASSERT2(0,
"unknown scheduling of taskloop");
4656 KMP_DEBUG_ASSERT(tc == num_tasks * grainsize +
4657 (last_chunk < 0 ? last_chunk : extras));
4658 KMP_DEBUG_ASSERT(num_tasks > extras);
4659 KMP_DEBUG_ASSERT(num_tasks > 0);
4665 taskdata->td_flags.task_serial = 1;
4666 taskdata->td_flags.tiedness = TASK_TIED;
4668 __kmp_taskloop_linear(loc, gtid, task, lb, ub, st, ub_glob, num_tasks,
4669 grainsize, extras, last_chunk, tc,
4671 OMPT_GET_RETURN_ADDRESS(0),
4676 }
else if (num_tasks > num_tasks_min && !taskdata->td_flags.native) {
4677 KA_TRACE(20, (
"__kmp_taskloop: T#%d, go recursive: tc %llu, #tasks %llu"
4678 "(%lld), grain %llu, extras %llu, last_chunk %lld\n",
4679 gtid, tc, num_tasks, num_tasks_min, grainsize, extras,
4681 __kmp_taskloop_recur(loc, gtid, task, lb, ub, st, ub_glob, num_tasks,
4682 grainsize, extras, last_chunk, tc, num_tasks_min,
4684 OMPT_GET_RETURN_ADDRESS(0),
4688 KA_TRACE(20, (
"__kmp_taskloop: T#%d, go linear: tc %llu, #tasks %llu"
4689 "(%lld), grain %llu, extras %llu, last_chunk %lld\n",
4690 gtid, tc, num_tasks, num_tasks_min, grainsize, extras,
4692 __kmp_taskloop_linear(loc, gtid, task, lb, ub, st, ub_glob, num_tasks,
4693 grainsize, extras, last_chunk, tc,
4695 OMPT_GET_RETURN_ADDRESS(0),
4700 #if OMPT_SUPPORT && OMPT_OPTIONAL
4701 if (ompt_enabled.ompt_callback_work) {
4702 ompt_callbacks.ompt_callback(ompt_callback_work)(
4703 ompt_work_taskloop, ompt_scope_end, &(team_info->parallel_data),
4704 &(task_info->task_data), tc, OMPT_GET_RETURN_ADDRESS(0));
4709 #if OMPT_SUPPORT && OMPT_OPTIONAL
4710 OMPT_STORE_RETURN_ADDRESS(gtid);
4712 __kmpc_end_taskgroup(loc, gtid);
4714 KA_TRACE(20, (
"__kmp_taskloop(exit): T#%d\n", gtid));
4734 kmp_uint64 *lb, kmp_uint64 *ub, kmp_int64 st,
int nogroup,
4735 int sched, kmp_uint64 grainsize,
void *task_dup) {
4736 __kmp_assert_valid_gtid(gtid);
4737 KA_TRACE(20, (
"__kmpc_taskloop(enter): T#%d\n", gtid));
4738 __kmp_taskloop(loc, gtid, task, if_val, lb, ub, st, nogroup, sched, grainsize,
4740 KA_TRACE(20, (
"__kmpc_taskloop(exit): T#%d\n", gtid));
4761 kmp_uint64 *lb, kmp_uint64 *ub, kmp_int64 st,
4762 int nogroup,
int sched, kmp_uint64 grainsize,
4763 int modifier,
void *task_dup) {
4764 __kmp_assert_valid_gtid(gtid);
4765 KA_TRACE(20, (
"__kmpc_taskloop_5(enter): T#%d\n", gtid));
4766 __kmp_taskloop(loc, gtid, task, if_val, lb, ub, st, nogroup, sched, grainsize,
4767 modifier, task_dup);
4768 KA_TRACE(20, (
"__kmpc_taskloop_5(exit): T#%d\n", gtid));
struct kmp_taskred_data kmp_taskred_data_t
struct kmp_task_red_input kmp_task_red_input_t
struct kmp_taskred_flags kmp_taskred_flags_t
struct kmp_taskred_input kmp_taskred_input_t
#define KMP_COUNT_BLOCK(name)
Increments specified counter (name).
void __kmpc_taskloop(ident_t *loc, int gtid, kmp_task_t *task, int if_val, kmp_uint64 *lb, kmp_uint64 *ub, kmp_int64 st, int nogroup, int sched, kmp_uint64 grainsize, void *task_dup)
void * __kmpc_taskred_modifier_init(ident_t *loc, int gtid, int is_ws, int num, void *data)
void * __kmpc_taskred_init(int gtid, int num, void *data)
void * __kmpc_task_reduction_init(int gtid, int num, void *data)
void __kmpc_proxy_task_completed_ooo(kmp_task_t *ptask)
void __kmpc_task_reduction_modifier_fini(ident_t *loc, int gtid, int is_ws)
kmp_int32 __kmpc_omp_reg_task_with_affinity(ident_t *loc_ref, kmp_int32 gtid, kmp_task_t *new_task, kmp_int32 naffins, kmp_task_affinity_info_t *affin_list)
void * __kmpc_task_reduction_modifier_init(ident_t *loc, int gtid, int is_ws, int num, void *data)
void __kmpc_taskloop_5(ident_t *loc, int gtid, kmp_task_t *task, int if_val, kmp_uint64 *lb, kmp_uint64 *ub, kmp_int64 st, int nogroup, int sched, kmp_uint64 grainsize, int modifier, void *task_dup)
void __kmpc_proxy_task_completed(kmp_int32 gtid, kmp_task_t *ptask)
void * __kmpc_task_reduction_get_th_data(int gtid, void *tskgrp, void *data)
kmp_taskred_flags_t flags