33 #include "gc/parallel/psMarkSweep.hpp"
34 #include "gc/parallel/psMarkSweepDecorator.hpp"
35 #include "gc/parallel/psOldGen.hpp"
36 #include "gc/parallel/psScavenge.hpp"
37 #include "gc/parallel/psYoungGen.hpp"
38 #include "gc/serial/markSweep.hpp"
39 #include "gc/shared/gcCause.hpp"
40 #include "gc/shared/gcHeapSummary.hpp"
41 #include "gc/shared/gcId.hpp"
42 #include "gc/shared/gcLocker.inline.hpp"
43 #include "gc/shared/gcTimer.hpp"
44 #include "gc/shared/gcTrace.hpp"
45 #include "gc/shared/gcTraceTime.inline.hpp"
46 #include "gc/shared/isGCActiveMark.hpp"
47 #include "gc/shared/referencePolicy.hpp"
48 #include "gc/shared/referenceProcessor.hpp"
49 #include "gc/shared/spaceDecorator.hpp"
50 #include "logging/log.hpp"
51 #include "oops/oop.inline.hpp"
52 #include "runtime/biasedLocking.hpp"
53 #include "runtime/safepoint.hpp"
54 #include "runtime/vmThread.hpp"
55 #include "services/management.hpp"
56 #include "services/memoryService.hpp"
57 #include "utilities/align.hpp"
58 #include "utilities/events.hpp"
59 #include "utilities/stack.inline.hpp"
60
61 elapsedTimer PSMarkSweep::_accumulated_time;
62 jlong PSMarkSweep::_time_of_last_gc = 0;
63 CollectorCounters* PSMarkSweep::_counters = NULL;
64
65 void PSMarkSweep::initialize() {
66 MemRegion mr = ParallelScavengeHeap::heap()->reserved_region();
67 set_ref_processor(new ReferenceProcessor(mr)); // a vanilla ref proc
68 _counters = new CollectorCounters("PSMarkSweep", 1);
69 }
70
71 // This method contains all heap specific policy for invoking mark sweep.
72 // PSMarkSweep::invoke_no_policy() will only attempt to mark-sweep-compact
597 PSYoungGen* young_gen = heap->young_gen();
598 PSOldGen* old_gen = heap->old_gen();
599
600 // Need to clear claim bits before the tracing starts.
601 ClassLoaderDataGraph::clear_claimed_marks();
602
603 // General strong roots.
604 Universe::oops_do(adjust_pointer_closure());
605 JNIHandles::oops_do(adjust_pointer_closure()); // Global (strong) JNI handles
606 Threads::oops_do(adjust_pointer_closure(), NULL);
607 ObjectSynchronizer::oops_do(adjust_pointer_closure());
608 Management::oops_do(adjust_pointer_closure());
609 JvmtiExport::oops_do(adjust_pointer_closure());
610 SystemDictionary::oops_do(adjust_pointer_closure());
611 ClassLoaderDataGraph::cld_do(adjust_cld_closure());
612
613 // Now adjust pointers in remaining weak roots. (All of which should
614 // have been cleared if they pointed to non-surviving objects.)
615 // Global (weak) JNI handles
616 JNIHandles::weak_oops_do(adjust_pointer_closure());
617
618 CodeBlobToOopClosure adjust_from_blobs(adjust_pointer_closure(), CodeBlobToOopClosure::FixRelocations);
619 CodeCache::blobs_do(&adjust_from_blobs);
620 AOTLoader::oops_do(adjust_pointer_closure());
621 StringTable::oops_do(adjust_pointer_closure());
622 ref_processor()->weak_oops_do(adjust_pointer_closure());
623 PSScavenge::reference_processor()->weak_oops_do(adjust_pointer_closure());
624
625 adjust_marks();
626
627 young_gen->adjust_pointers();
628 old_gen->adjust_pointers();
629 }
630
631 void PSMarkSweep::mark_sweep_phase4() {
632 EventMark m("4 compact heap");
633 GCTraceTime(Info, gc, phases) tm("Phase 4: Move objects", _gc_timer);
634
635 // All pointers are now adjusted, move objects accordingly
636
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33 #include "gc/parallel/psMarkSweep.hpp"
34 #include "gc/parallel/psMarkSweepDecorator.hpp"
35 #include "gc/parallel/psOldGen.hpp"
36 #include "gc/parallel/psScavenge.hpp"
37 #include "gc/parallel/psYoungGen.hpp"
38 #include "gc/serial/markSweep.hpp"
39 #include "gc/shared/gcCause.hpp"
40 #include "gc/shared/gcHeapSummary.hpp"
41 #include "gc/shared/gcId.hpp"
42 #include "gc/shared/gcLocker.inline.hpp"
43 #include "gc/shared/gcTimer.hpp"
44 #include "gc/shared/gcTrace.hpp"
45 #include "gc/shared/gcTraceTime.inline.hpp"
46 #include "gc/shared/isGCActiveMark.hpp"
47 #include "gc/shared/referencePolicy.hpp"
48 #include "gc/shared/referenceProcessor.hpp"
49 #include "gc/shared/spaceDecorator.hpp"
50 #include "logging/log.hpp"
51 #include "oops/oop.inline.hpp"
52 #include "runtime/biasedLocking.hpp"
53 #include "runtime/heapMonitoring.hpp"
54 #include "runtime/safepoint.hpp"
55 #include "runtime/vmThread.hpp"
56 #include "services/management.hpp"
57 #include "services/memoryService.hpp"
58 #include "utilities/align.hpp"
59 #include "utilities/events.hpp"
60 #include "utilities/stack.inline.hpp"
61
62 elapsedTimer PSMarkSweep::_accumulated_time;
63 jlong PSMarkSweep::_time_of_last_gc = 0;
64 CollectorCounters* PSMarkSweep::_counters = NULL;
65
66 void PSMarkSweep::initialize() {
67 MemRegion mr = ParallelScavengeHeap::heap()->reserved_region();
68 set_ref_processor(new ReferenceProcessor(mr)); // a vanilla ref proc
69 _counters = new CollectorCounters("PSMarkSweep", 1);
70 }
71
72 // This method contains all heap specific policy for invoking mark sweep.
73 // PSMarkSweep::invoke_no_policy() will only attempt to mark-sweep-compact
598 PSYoungGen* young_gen = heap->young_gen();
599 PSOldGen* old_gen = heap->old_gen();
600
601 // Need to clear claim bits before the tracing starts.
602 ClassLoaderDataGraph::clear_claimed_marks();
603
604 // General strong roots.
605 Universe::oops_do(adjust_pointer_closure());
606 JNIHandles::oops_do(adjust_pointer_closure()); // Global (strong) JNI handles
607 Threads::oops_do(adjust_pointer_closure(), NULL);
608 ObjectSynchronizer::oops_do(adjust_pointer_closure());
609 Management::oops_do(adjust_pointer_closure());
610 JvmtiExport::oops_do(adjust_pointer_closure());
611 SystemDictionary::oops_do(adjust_pointer_closure());
612 ClassLoaderDataGraph::cld_do(adjust_cld_closure());
613
614 // Now adjust pointers in remaining weak roots. (All of which should
615 // have been cleared if they pointed to non-surviving objects.)
616 // Global (weak) JNI handles
617 JNIHandles::weak_oops_do(adjust_pointer_closure());
618 HeapMonitoring::weak_oops_do(adjust_pointer_closure());
619
620 CodeBlobToOopClosure adjust_from_blobs(adjust_pointer_closure(), CodeBlobToOopClosure::FixRelocations);
621 CodeCache::blobs_do(&adjust_from_blobs);
622 AOTLoader::oops_do(adjust_pointer_closure());
623 StringTable::oops_do(adjust_pointer_closure());
624 ref_processor()->weak_oops_do(adjust_pointer_closure());
625 PSScavenge::reference_processor()->weak_oops_do(adjust_pointer_closure());
626
627 adjust_marks();
628
629 young_gen->adjust_pointers();
630 old_gen->adjust_pointers();
631 }
632
633 void PSMarkSweep::mark_sweep_phase4() {
634 EventMark m("4 compact heap");
635 GCTraceTime(Info, gc, phases) tm("Phase 4: Move objects", _gc_timer);
636
637 // All pointers are now adjusted, move objects accordingly
638
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