17 #include "kmp_wait_release.h" 18 #include "kmp_taskdeps.h" 20 #include "ompt-specific.h" 32 #ifdef KMP_SUPPORT_GRAPH_OUTPUT 33 static std::atomic<kmp_int32> kmp_node_id_seed = ATOMIC_VAR_INIT(0);
36 static void __kmp_init_node(kmp_depnode_t *node) {
37 node->dn.successors = NULL;
40 for (
int i = 0; i < MAX_MTX_DEPS; ++i)
41 node->dn.mtx_locks[i] = NULL;
42 node->dn.mtx_num_locks = 0;
43 __kmp_init_lock(&node->dn.lock);
44 KMP_ATOMIC_ST_RLX(&node->dn.nrefs, 1);
45 #ifdef KMP_SUPPORT_GRAPH_OUTPUT 46 node->dn.id = KMP_ATOMIC_INC(&kmp_node_id_seed);
50 static inline kmp_depnode_t *__kmp_node_ref(kmp_depnode_t *node) {
51 KMP_ATOMIC_INC(&node->dn.nrefs);
55 enum { KMP_DEPHASH_OTHER_SIZE = 97, KMP_DEPHASH_MASTER_SIZE = 997 };
57 size_t sizes[] = {997, 2003, 4001, 8191, 16001, 32003, 64007, 131071, 270029};
58 const size_t MAX_GEN = 8;
60 static inline size_t __kmp_dephash_hash(kmp_intptr_t addr,
size_t hsize) {
63 return ((addr >> 6) ^ (addr >> 2)) % hsize;
66 static kmp_dephash_t *__kmp_dephash_extend(kmp_info_t *thread,
67 kmp_dephash_t *current_dephash) {
70 size_t gen = current_dephash->generation + 1;
72 return current_dephash;
73 size_t new_size = sizes[gen];
75 size_t size_to_allocate =
76 new_size *
sizeof(kmp_dephash_entry_t *) +
sizeof(kmp_dephash_t);
79 h = (kmp_dephash_t *)__kmp_fast_allocate(thread, size_to_allocate);
81 h = (kmp_dephash_t *)__kmp_thread_malloc(thread, size_to_allocate);
85 h->nelements = current_dephash->nelements;
86 h->buckets = (kmp_dephash_entry **)(h + 1);
91 for (
size_t i = 0; i < new_size; i++) {
96 for (
size_t i = 0; i < current_dephash->size; i++) {
97 kmp_dephash_entry_t *next, *entry;
98 for (entry = current_dephash->buckets[i]; entry; entry = next) {
99 next = entry->next_in_bucket;
102 size_t new_bucket = __kmp_dephash_hash(entry->addr, h->size);
103 entry->next_in_bucket = h->buckets[new_bucket];
104 if (entry->next_in_bucket) {
107 h->buckets[new_bucket] = entry;
113 __kmp_fast_free(thread, current_dephash);
115 __kmp_thread_free(thread, current_dephash);
121 static kmp_dephash_t *__kmp_dephash_create(kmp_info_t *thread,
122 kmp_taskdata_t *current_task) {
127 if (current_task->td_flags.tasktype == TASK_IMPLICIT)
128 h_size = KMP_DEPHASH_MASTER_SIZE;
130 h_size = KMP_DEPHASH_OTHER_SIZE;
132 size_t size = h_size *
sizeof(kmp_dephash_entry_t *) +
sizeof(kmp_dephash_t);
135 h = (kmp_dephash_t *)__kmp_fast_allocate(thread, size);
137 h = (kmp_dephash_t *)__kmp_thread_malloc(thread, size);
144 h->buckets = (kmp_dephash_entry **)(h + 1);
146 for (
size_t i = 0; i < h_size; i++)
152 static kmp_dephash_entry *__kmp_dephash_find(kmp_info_t *thread,
153 kmp_dephash_t **hash,
155 kmp_dephash_t *h = *hash;
156 if (h->nelements != 0 && h->nconflicts / h->size >= 1) {
157 *hash = __kmp_dephash_extend(thread, h);
160 size_t bucket = __kmp_dephash_hash(addr, h->size);
162 kmp_dephash_entry_t *entry;
163 for (entry = h->buckets[bucket]; entry; entry = entry->next_in_bucket)
164 if (entry->addr == addr)
170 entry = (kmp_dephash_entry_t *)__kmp_fast_allocate(
171 thread,
sizeof(kmp_dephash_entry_t));
173 entry = (kmp_dephash_entry_t *)__kmp_thread_malloc(
174 thread,
sizeof(kmp_dephash_entry_t));
177 entry->last_out = NULL;
178 entry->last_set = NULL;
179 entry->prev_set = NULL;
180 entry->last_flag = 0;
181 entry->mtx_lock = NULL;
182 entry->next_in_bucket = h->buckets[bucket];
183 h->buckets[bucket] = entry;
185 if (entry->next_in_bucket)
191 static kmp_depnode_list_t *__kmp_add_node(kmp_info_t *thread,
192 kmp_depnode_list_t *list,
193 kmp_depnode_t *node) {
194 kmp_depnode_list_t *new_head;
197 new_head = (kmp_depnode_list_t *)__kmp_fast_allocate(
198 thread,
sizeof(kmp_depnode_list_t));
200 new_head = (kmp_depnode_list_t *)__kmp_thread_malloc(
201 thread,
sizeof(kmp_depnode_list_t));
204 new_head->node = __kmp_node_ref(node);
205 new_head->next = list;
210 static inline void __kmp_track_dependence(kmp_int32 gtid, kmp_depnode_t *source,
212 kmp_task_t *sink_task) {
213 #ifdef KMP_SUPPORT_GRAPH_OUTPUT 214 kmp_taskdata_t *task_source = KMP_TASK_TO_TASKDATA(source->dn.task);
217 kmp_taskdata_t *task_sink = KMP_TASK_TO_TASKDATA(sink_task);
219 __kmp_printf(
"%d(%s) -> %d(%s)\n", source->dn.id,
220 task_source->td_ident->psource, sink->dn.id,
221 task_sink->td_ident->psource);
223 #if OMPT_SUPPORT && OMPT_OPTIONAL 227 if (ompt_enabled.ompt_callback_task_dependence) {
228 kmp_taskdata_t *task_source = KMP_TASK_TO_TASKDATA(source->dn.task);
229 ompt_data_t *sink_data;
231 sink_data = &(KMP_TASK_TO_TASKDATA(sink_task)->ompt_task_info.task_data);
233 sink_data = &__kmp_threads[gtid]->th.ompt_thread_info.task_data;
235 ompt_callbacks.ompt_callback(ompt_callback_task_dependence)(
236 &(task_source->ompt_task_info.task_data), sink_data);
241 static inline kmp_int32
242 __kmp_depnode_link_successor(kmp_int32 gtid, kmp_info_t *thread,
243 kmp_task_t *task, kmp_depnode_t *node,
244 kmp_depnode_list_t *plist) {
247 kmp_int32 npredecessors = 0;
249 for (kmp_depnode_list_t *p = plist; p; p = p->next) {
250 kmp_depnode_t *dep = p->node;
252 KMP_ACQUIRE_DEPNODE(gtid, dep);
254 __kmp_track_dependence(gtid, dep, node, task);
255 dep->dn.successors = __kmp_add_node(thread, dep->dn.successors, node);
256 KA_TRACE(40, (
"__kmp_process_deps: T#%d adding dependence from %p to " 258 gtid, KMP_TASK_TO_TASKDATA(dep->dn.task),
259 KMP_TASK_TO_TASKDATA(task)));
262 KMP_RELEASE_DEPNODE(gtid, dep);
265 return npredecessors;
268 static inline kmp_int32 __kmp_depnode_link_successor(kmp_int32 gtid,
271 kmp_depnode_t *source,
272 kmp_depnode_t *sink) {
275 kmp_int32 npredecessors = 0;
278 KMP_ACQUIRE_DEPNODE(gtid, sink);
280 __kmp_track_dependence(gtid, sink, source, task);
281 sink->dn.successors = __kmp_add_node(thread, sink->dn.successors, source);
282 KA_TRACE(40, (
"__kmp_process_deps: T#%d adding dependence from %p to " 284 gtid, KMP_TASK_TO_TASKDATA(sink->dn.task),
285 KMP_TASK_TO_TASKDATA(task)));
288 KMP_RELEASE_DEPNODE(gtid, sink);
290 return npredecessors;
293 template <
bool filter>
294 static inline kmp_int32
295 __kmp_process_deps(kmp_int32 gtid, kmp_depnode_t *node, kmp_dephash_t **hash,
296 bool dep_barrier, kmp_int32 ndeps,
297 kmp_depend_info_t *dep_list, kmp_task_t *task) {
298 KA_TRACE(30, (
"__kmp_process_deps<%d>: T#%d processing %d dependences : " 299 "dep_barrier = %d\n",
300 filter, gtid, ndeps, dep_barrier));
302 kmp_info_t *thread = __kmp_threads[gtid];
303 kmp_int32 npredecessors = 0;
304 for (kmp_int32 i = 0; i < ndeps; i++) {
305 const kmp_depend_info_t *dep = &dep_list[i];
307 if (filter && dep->base_addr == 0)
310 kmp_dephash_entry_t *info =
311 __kmp_dephash_find(thread, hash, dep->base_addr);
312 kmp_depnode_t *last_out = info->last_out;
313 kmp_depnode_list_t *last_set = info->last_set;
314 kmp_depnode_list_t *prev_set = info->prev_set;
316 if (dep->flags.out) {
319 __kmp_depnode_link_successor(gtid, thread, task, node, last_set);
320 __kmp_depnode_list_free(thread, last_set);
321 __kmp_depnode_list_free(thread, prev_set);
322 info->last_set = NULL;
323 info->prev_set = NULL;
327 __kmp_depnode_link_successor(gtid, thread, task, node, last_out);
329 __kmp_node_deref(thread, last_out);
331 info->last_out = __kmp_node_ref(node);
336 info->last_out = NULL;
339 if (info->last_flag == 0 || info->last_flag == dep->flag) {
343 __kmp_depnode_link_successor(gtid, thread, task, node, last_out);
346 __kmp_depnode_link_successor(gtid, thread, task, node, prev_set);
349 __kmp_node_deref(thread, last_out);
350 info->last_out = NULL;
351 __kmp_depnode_list_free(thread, prev_set);
352 info->prev_set = NULL;
357 __kmp_depnode_link_successor(gtid, thread, task, node, last_set);
359 __kmp_node_deref(thread, last_out);
360 info->last_out = NULL;
362 __kmp_depnode_list_free(thread, prev_set);
365 info->prev_set = last_set;
367 info->prev_set = NULL;
370 info->last_set = NULL;
375 info->last_flag = dep->flag;
376 info->last_set = __kmp_add_node(thread, info->last_set, node);
379 if (dep->flag == KMP_DEP_MTX) {
380 if (info->mtx_lock == NULL) {
381 info->mtx_lock = (kmp_lock_t *)__kmp_allocate(
sizeof(kmp_lock_t));
382 __kmp_init_lock(info->mtx_lock);
384 KMP_DEBUG_ASSERT(node->dn.mtx_num_locks < MAX_MTX_DEPS);
387 for (m = 0; m < MAX_MTX_DEPS; ++m) {
389 if (node->dn.mtx_locks[m] < info->mtx_lock) {
390 KMP_DEBUG_ASSERT(!node->dn.mtx_locks[node->dn.mtx_num_locks]);
391 for (
int n = node->dn.mtx_num_locks; n > m; --n) {
393 KMP_DEBUG_ASSERT(node->dn.mtx_locks[n - 1] != NULL);
394 node->dn.mtx_locks[n] = node->dn.mtx_locks[n - 1];
396 node->dn.mtx_locks[m] = info->mtx_lock;
400 KMP_DEBUG_ASSERT(m < MAX_MTX_DEPS);
401 node->dn.mtx_num_locks++;
405 KA_TRACE(30, (
"__kmp_process_deps<%d>: T#%d found %d predecessors\n", filter,
406 gtid, npredecessors));
407 return npredecessors;
410 #define NO_DEP_BARRIER (false) 411 #define DEP_BARRIER (true) 414 static bool __kmp_check_deps(kmp_int32 gtid, kmp_depnode_t *node,
415 kmp_task_t *task, kmp_dephash_t **hash,
416 bool dep_barrier, kmp_int32 ndeps,
417 kmp_depend_info_t *dep_list,
418 kmp_int32 ndeps_noalias,
419 kmp_depend_info_t *noalias_dep_list) {
422 kmp_taskdata_t *taskdata = KMP_TASK_TO_TASKDATA(task);
424 KA_TRACE(20, (
"__kmp_check_deps: T#%d checking dependences for task %p : %d " 425 "possibly aliased dependences, %d non-aliased dependences : " 426 "dep_barrier=%d .\n",
427 gtid, taskdata, ndeps, ndeps_noalias, dep_barrier));
431 for (i = 0; i < ndeps; i++) {
432 if (dep_list[i].base_addr != 0) {
434 dep_list[i].flag == KMP_DEP_IN || dep_list[i].flag == KMP_DEP_OUT ||
435 dep_list[i].flag == KMP_DEP_INOUT ||
436 dep_list[i].flag == KMP_DEP_MTX || dep_list[i].flag == KMP_DEP_SET);
437 for (
int j = i + 1; j < ndeps; j++) {
438 if (dep_list[i].base_addr == dep_list[j].base_addr) {
439 if (dep_list[i].flag != dep_list[j].flag) {
441 dep_list[i].flag = KMP_DEP_OUT;
443 dep_list[j].base_addr = 0;
446 if (dep_list[i].flag == KMP_DEP_MTX) {
448 if (n_mtxs < MAX_MTX_DEPS && task != NULL) {
451 dep_list[i].flag = KMP_DEP_OUT;
461 node->dn.npredecessors = -1;
467 npredecessors = __kmp_process_deps<true>(gtid, node, hash, dep_barrier, ndeps,
469 npredecessors += __kmp_process_deps<false>(
470 gtid, node, hash, dep_barrier, ndeps_noalias, noalias_dep_list, task);
472 node->dn.task = task;
482 node->dn.npredecessors.fetch_add(npredecessors) + npredecessors;
484 KA_TRACE(20, (
"__kmp_check_deps: T#%d found %d predecessors for task %p \n",
485 gtid, npredecessors, taskdata));
489 return npredecessors > 0 ? true :
false;
509 kmp_task_t *new_task, kmp_int32 ndeps,
510 kmp_depend_info_t *dep_list,
511 kmp_int32 ndeps_noalias,
512 kmp_depend_info_t *noalias_dep_list) {
514 kmp_taskdata_t *new_taskdata = KMP_TASK_TO_TASKDATA(new_task);
515 KA_TRACE(10, (
"__kmpc_omp_task_with_deps(enter): T#%d loc=%p task=%p\n", gtid,
516 loc_ref, new_taskdata));
517 __kmp_assert_valid_gtid(gtid);
518 kmp_info_t *thread = __kmp_threads[gtid];
519 kmp_taskdata_t *current_task = thread->th.th_current_task;
522 if (ompt_enabled.enabled) {
523 if (!current_task->ompt_task_info.frame.enter_frame.ptr)
524 current_task->ompt_task_info.frame.enter_frame.ptr =
525 OMPT_GET_FRAME_ADDRESS(0);
526 if (ompt_enabled.ompt_callback_task_create) {
527 ompt_callbacks.ompt_callback(ompt_callback_task_create)(
528 &(current_task->ompt_task_info.task_data),
529 &(current_task->ompt_task_info.frame),
530 &(new_taskdata->ompt_task_info.task_data),
531 ompt_task_explicit | TASK_TYPE_DETAILS_FORMAT(new_taskdata), 1,
532 OMPT_LOAD_OR_GET_RETURN_ADDRESS(gtid));
535 new_taskdata->ompt_task_info.frame.enter_frame.ptr =
536 OMPT_GET_FRAME_ADDRESS(0);
541 if (ndeps + ndeps_noalias > 0 && ompt_enabled.ompt_callback_dependences) {
544 int ompt_ndeps = ndeps + ndeps_noalias;
545 ompt_dependence_t *ompt_deps = (ompt_dependence_t *)KMP_OMPT_DEPS_ALLOC(
546 thread, (ndeps + ndeps_noalias) *
sizeof(ompt_dependence_t));
548 KMP_ASSERT(ompt_deps != NULL);
550 for (i = 0; i < ndeps; i++) {
551 ompt_deps[i].variable.ptr = (
void *)dep_list[i].base_addr;
552 if (dep_list[i].flags.in && dep_list[i].flags.out)
553 ompt_deps[i].dependence_type = ompt_dependence_type_inout;
554 else if (dep_list[i].flags.out)
555 ompt_deps[i].dependence_type = ompt_dependence_type_out;
556 else if (dep_list[i].flags.in)
557 ompt_deps[i].dependence_type = ompt_dependence_type_in;
558 else if (dep_list[i].flags.mtx)
559 ompt_deps[i].dependence_type = ompt_dependence_type_mutexinoutset;
560 else if (dep_list[i].flags.set)
561 ompt_deps[i].dependence_type = ompt_dependence_type_inoutset;
563 for (i = 0; i < ndeps_noalias; i++) {
564 ompt_deps[ndeps + i].variable.ptr = (
void *)noalias_dep_list[i].base_addr;
565 if (noalias_dep_list[i].flags.in && noalias_dep_list[i].flags.out)
566 ompt_deps[ndeps + i].dependence_type = ompt_dependence_type_inout;
567 else if (noalias_dep_list[i].flags.out)
568 ompt_deps[ndeps + i].dependence_type = ompt_dependence_type_out;
569 else if (noalias_dep_list[i].flags.in)
570 ompt_deps[ndeps + i].dependence_type = ompt_dependence_type_in;
571 else if (noalias_dep_list[i].flags.mtx)
572 ompt_deps[ndeps + i].dependence_type =
573 ompt_dependence_type_mutexinoutset;
574 else if (noalias_dep_list[i].flags.set)
575 ompt_deps[ndeps + i].dependence_type = ompt_dependence_type_inoutset;
577 ompt_callbacks.ompt_callback(ompt_callback_dependences)(
578 &(new_taskdata->ompt_task_info.task_data), ompt_deps, ompt_ndeps);
581 KMP_OMPT_DEPS_FREE(thread, ompt_deps);
586 bool serial = current_task->td_flags.team_serial ||
587 current_task->td_flags.tasking_ser ||
588 current_task->td_flags.final;
589 kmp_task_team_t *task_team = thread->th.th_task_team;
591 !(task_team && (task_team->tt.tt_found_proxy_tasks ||
592 task_team->tt.tt_hidden_helper_task_encountered));
594 if (!serial && (ndeps > 0 || ndeps_noalias > 0)) {
596 if (current_task->td_dephash == NULL)
597 current_task->td_dephash = __kmp_dephash_create(thread, current_task);
600 kmp_depnode_t *node =
601 (kmp_depnode_t *)__kmp_fast_allocate(thread,
sizeof(kmp_depnode_t));
603 kmp_depnode_t *node =
604 (kmp_depnode_t *)__kmp_thread_malloc(thread,
sizeof(kmp_depnode_t));
607 __kmp_init_node(node);
608 new_taskdata->td_depnode = node;
610 if (__kmp_check_deps(gtid, node, new_task, ¤t_task->td_dephash,
611 NO_DEP_BARRIER, ndeps, dep_list, ndeps_noalias,
613 KA_TRACE(10, (
"__kmpc_omp_task_with_deps(exit): T#%d task had blocking " 615 "loc=%p task=%p, return: TASK_CURRENT_NOT_QUEUED\n",
616 gtid, loc_ref, new_taskdata));
618 if (ompt_enabled.enabled) {
619 current_task->ompt_task_info.frame.enter_frame = ompt_data_none;
622 return TASK_CURRENT_NOT_QUEUED;
625 KA_TRACE(10, (
"__kmpc_omp_task_with_deps(exit): T#%d ignored dependences " 626 "for task (serialized) loc=%p task=%p\n",
627 gtid, loc_ref, new_taskdata));
630 KA_TRACE(10, (
"__kmpc_omp_task_with_deps(exit): T#%d task had no blocking " 632 "loc=%p task=%p, transferring to __kmp_omp_task\n",
633 gtid, loc_ref, new_taskdata));
635 kmp_int32 ret = __kmp_omp_task(gtid, new_task,
true);
637 if (ompt_enabled.enabled) {
638 current_task->ompt_task_info.frame.enter_frame = ompt_data_none;
645 void __ompt_taskwait_dep_finish(kmp_taskdata_t *current_task,
646 ompt_data_t *taskwait_task_data) {
647 if (ompt_enabled.ompt_callback_task_schedule) {
648 ompt_callbacks.ompt_callback(ompt_callback_task_schedule)(
649 taskwait_task_data, ompt_taskwait_complete, NULL);
651 current_task->ompt_task_info.frame.enter_frame.ptr = NULL;
652 *taskwait_task_data = ompt_data_none;
668 kmp_depend_info_t *dep_list, kmp_int32 ndeps_noalias,
669 kmp_depend_info_t *noalias_dep_list) {
670 KA_TRACE(10, (
"__kmpc_omp_wait_deps(enter): T#%d loc=%p\n", gtid, loc_ref));
672 if (ndeps == 0 && ndeps_noalias == 0) {
673 KA_TRACE(10, (
"__kmpc_omp_wait_deps(exit): T#%d has no dependences to " 674 "wait upon : loc=%p\n",
678 __kmp_assert_valid_gtid(gtid);
679 kmp_info_t *thread = __kmp_threads[gtid];
680 kmp_taskdata_t *current_task = thread->th.th_current_task;
688 ompt_data_t *taskwait_task_data = &thread->th.ompt_thread_info.task_data;
689 KMP_ASSERT(taskwait_task_data->ptr == NULL);
690 if (ompt_enabled.enabled) {
691 if (!current_task->ompt_task_info.frame.enter_frame.ptr)
692 current_task->ompt_task_info.frame.enter_frame.ptr =
693 OMPT_GET_FRAME_ADDRESS(0);
694 if (ompt_enabled.ompt_callback_task_create) {
695 ompt_callbacks.ompt_callback(ompt_callback_task_create)(
696 &(current_task->ompt_task_info.task_data),
697 &(current_task->ompt_task_info.frame), taskwait_task_data,
698 ompt_task_taskwait | ompt_task_undeferred | ompt_task_mergeable, 1,
699 OMPT_LOAD_OR_GET_RETURN_ADDRESS(gtid));
705 if (ndeps + ndeps_noalias > 0 && ompt_enabled.ompt_callback_dependences) {
708 int ompt_ndeps = ndeps + ndeps_noalias;
709 ompt_dependence_t *ompt_deps = (ompt_dependence_t *)KMP_OMPT_DEPS_ALLOC(
710 thread, (ndeps + ndeps_noalias) *
sizeof(ompt_dependence_t));
712 KMP_ASSERT(ompt_deps != NULL);
714 for (i = 0; i < ndeps; i++) {
715 ompt_deps[i].variable.ptr = (
void *)dep_list[i].base_addr;
716 if (dep_list[i].flags.in && dep_list[i].flags.out)
717 ompt_deps[i].dependence_type = ompt_dependence_type_inout;
718 else if (dep_list[i].flags.out)
719 ompt_deps[i].dependence_type = ompt_dependence_type_out;
720 else if (dep_list[i].flags.in)
721 ompt_deps[i].dependence_type = ompt_dependence_type_in;
722 else if (dep_list[i].flags.mtx)
723 ompt_deps[ndeps + i].dependence_type =
724 ompt_dependence_type_mutexinoutset;
725 else if (dep_list[i].flags.set)
726 ompt_deps[ndeps + i].dependence_type = ompt_dependence_type_inoutset;
728 for (i = 0; i < ndeps_noalias; i++) {
729 ompt_deps[ndeps + i].variable.ptr = (
void *)noalias_dep_list[i].base_addr;
730 if (noalias_dep_list[i].flags.in && noalias_dep_list[i].flags.out)
731 ompt_deps[ndeps + i].dependence_type = ompt_dependence_type_inout;
732 else if (noalias_dep_list[i].flags.out)
733 ompt_deps[ndeps + i].dependence_type = ompt_dependence_type_out;
734 else if (noalias_dep_list[i].flags.in)
735 ompt_deps[ndeps + i].dependence_type = ompt_dependence_type_in;
736 else if (noalias_dep_list[i].flags.mtx)
737 ompt_deps[ndeps + i].dependence_type =
738 ompt_dependence_type_mutexinoutset;
739 else if (noalias_dep_list[i].flags.set)
740 ompt_deps[ndeps + i].dependence_type = ompt_dependence_type_inoutset;
742 ompt_callbacks.ompt_callback(ompt_callback_dependences)(
743 taskwait_task_data, ompt_deps, ompt_ndeps);
746 KMP_OMPT_DEPS_FREE(thread, ompt_deps);
755 bool ignore = current_task->td_flags.team_serial ||
756 current_task->td_flags.tasking_ser ||
757 current_task->td_flags.final;
758 ignore = ignore && thread->th.th_task_team != NULL &&
759 thread->th.th_task_team->tt.tt_found_proxy_tasks == FALSE;
760 ignore = ignore || current_task->td_dephash == NULL;
763 KA_TRACE(10, (
"__kmpc_omp_wait_deps(exit): T#%d has no blocking " 764 "dependences : loc=%p\n",
767 __ompt_taskwait_dep_finish(current_task, taskwait_task_data);
772 kmp_depnode_t node = {0};
773 __kmp_init_node(&node);
775 if (!__kmp_check_deps(gtid, &node, NULL, ¤t_task->td_dephash,
776 DEP_BARRIER, ndeps, dep_list, ndeps_noalias,
778 KA_TRACE(10, (
"__kmpc_omp_wait_deps(exit): T#%d has no blocking " 779 "dependences : loc=%p\n",
782 __ompt_taskwait_dep_finish(current_task, taskwait_task_data);
787 int thread_finished = FALSE;
788 kmp_flag_32<false, false> flag(
789 (std::atomic<kmp_uint32> *)&node.dn.npredecessors, 0U);
790 while (node.dn.npredecessors > 0) {
791 flag.execute_tasks(thread, gtid, FALSE,
792 &thread_finished USE_ITT_BUILD_ARG(NULL),
793 __kmp_task_stealing_constraint);
797 __ompt_taskwait_dep_finish(current_task, taskwait_task_data);
799 KA_TRACE(10, (
"__kmpc_omp_wait_deps(exit): T#%d finished waiting : loc=%p\n",
void __kmpc_omp_wait_deps(ident_t *loc_ref, kmp_int32 gtid, kmp_int32 ndeps, kmp_depend_info_t *dep_list, kmp_int32 ndeps_noalias, kmp_depend_info_t *noalias_dep_list)
kmp_int32 __kmpc_omp_task_with_deps(ident_t *loc_ref, kmp_int32 gtid, kmp_task_t *new_task, kmp_int32 ndeps, kmp_depend_info_t *dep_list, kmp_int32 ndeps_noalias, kmp_depend_info_t *noalias_dep_list)