387 q->enqueue(new ScavengeRootsTask(ScavengeRootsTask::class_loader_data));
388 q->enqueue(new ScavengeRootsTask(ScavengeRootsTask::jvmti));
389 q->enqueue(new ScavengeRootsTask(ScavengeRootsTask::code_cache));
390
391 ParallelTaskTerminator terminator(
392 active_workers,
393 (TaskQueueSetSuper*) promotion_manager->stack_array_depth());
394 if (active_workers > 1) {
395 for (uint j = 0; j < active_workers; j++) {
396 q->enqueue(new StealTask(&terminator));
397 }
398 }
399
400 gc_task_manager()->execute_and_wait(q);
401 }
402
403 scavenge_midpoint.update();
404
405 // Process reference objects discovered during scavenge
406 {
407 GCTraceTime(Debug, gc, phases) tm("References", &_gc_timer);
408
409 reference_processor()->setup_policy(false); // not always_clear
410 reference_processor()->set_active_mt_degree(active_workers);
411 PSKeepAliveClosure keep_alive(promotion_manager);
412 PSEvacuateFollowersClosure evac_followers(promotion_manager);
413 ReferenceProcessorStats stats;
414 if (reference_processor()->processing_is_mt()) {
415 PSRefProcTaskExecutor task_executor;
416 stats = reference_processor()->process_discovered_references(
417 &_is_alive_closure, &keep_alive, &evac_followers, &task_executor,
418 &_gc_timer);
419 } else {
420 stats = reference_processor()->process_discovered_references(
421 &_is_alive_closure, &keep_alive, &evac_followers, NULL, &_gc_timer);
422 }
423
424 _gc_tracer.report_gc_reference_stats(stats);
425
426 // Enqueue reference objects discovered during scavenge.
427 if (reference_processor()->processing_is_mt()) {
428 PSRefProcTaskExecutor task_executor;
429 reference_processor()->enqueue_discovered_references(&task_executor);
430 } else {
431 reference_processor()->enqueue_discovered_references(NULL);
432 }
433 }
434
435 {
436 GCTraceTime(Debug, gc, phases) tm("StringTable", &_gc_timer);
437 // Unlink any dead interned Strings and process the remaining live ones.
438 PSScavengeRootsClosure root_closure(promotion_manager);
439 StringTable::unlink_or_oops_do(&_is_alive_closure, &root_closure);
440 }
441
442 // Finally, flush the promotion_manager's labs, and deallocate its stacks.
443 promotion_failure_occurred = PSPromotionManager::post_scavenge(_gc_tracer);
444 if (promotion_failure_occurred) {
445 clean_up_failed_promotion();
446 log_info(gc)("Promotion failed");
447 }
448
449 _gc_tracer.report_tenuring_threshold(tenuring_threshold());
450
451 // Let the size policy know we're done. Note that we count promotion
452 // failure cleanup time as part of the collection (otherwise, we're
453 // implicitly saying it's mutator time).
454 size_policy->minor_collection_end(gc_cause);
455
456 if (!promotion_failure_occurred) {
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387 q->enqueue(new ScavengeRootsTask(ScavengeRootsTask::class_loader_data));
388 q->enqueue(new ScavengeRootsTask(ScavengeRootsTask::jvmti));
389 q->enqueue(new ScavengeRootsTask(ScavengeRootsTask::code_cache));
390
391 ParallelTaskTerminator terminator(
392 active_workers,
393 (TaskQueueSetSuper*) promotion_manager->stack_array_depth());
394 if (active_workers > 1) {
395 for (uint j = 0; j < active_workers; j++) {
396 q->enqueue(new StealTask(&terminator));
397 }
398 }
399
400 gc_task_manager()->execute_and_wait(q);
401 }
402
403 scavenge_midpoint.update();
404
405 // Process reference objects discovered during scavenge
406 {
407 GCTraceTime(Debug, gc, phases) tm("Reference Processing", &_gc_timer);
408
409 reference_processor()->setup_policy(false); // not always_clear
410 reference_processor()->set_active_mt_degree(active_workers);
411 PSKeepAliveClosure keep_alive(promotion_manager);
412 PSEvacuateFollowersClosure evac_followers(promotion_manager);
413 ReferenceProcessorStats stats;
414 if (reference_processor()->processing_is_mt()) {
415 PSRefProcTaskExecutor task_executor;
416 stats = reference_processor()->process_discovered_references(
417 &_is_alive_closure, &keep_alive, &evac_followers, &task_executor,
418 &_gc_timer);
419 } else {
420 stats = reference_processor()->process_discovered_references(
421 &_is_alive_closure, &keep_alive, &evac_followers, NULL, &_gc_timer);
422 }
423
424 _gc_tracer.report_gc_reference_stats(stats);
425
426 // Enqueue reference objects discovered during scavenge.
427 if (reference_processor()->processing_is_mt()) {
428 PSRefProcTaskExecutor task_executor;
429 reference_processor()->enqueue_discovered_references(&task_executor);
430 } else {
431 reference_processor()->enqueue_discovered_references(NULL);
432 }
433 }
434
435 {
436 GCTraceTime(Debug, gc, phases) tm("Scrub String Table", &_gc_timer);
437 // Unlink any dead interned Strings and process the remaining live ones.
438 PSScavengeRootsClosure root_closure(promotion_manager);
439 StringTable::unlink_or_oops_do(&_is_alive_closure, &root_closure);
440 }
441
442 // Finally, flush the promotion_manager's labs, and deallocate its stacks.
443 promotion_failure_occurred = PSPromotionManager::post_scavenge(_gc_tracer);
444 if (promotion_failure_occurred) {
445 clean_up_failed_promotion();
446 log_info(gc)("Promotion failed");
447 }
448
449 _gc_tracer.report_tenuring_threshold(tenuring_threshold());
450
451 // Let the size policy know we're done. Note that we count promotion
452 // failure cleanup time as part of the collection (otherwise, we're
453 // implicitly saying it's mutator time).
454 size_policy->minor_collection_end(gc_cause);
455
456 if (!promotion_failure_occurred) {
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