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1 /* | 1 /* |
2 * Copyright (C) 2013 Google Inc. All rights reserved. | 2 * Copyright (C) 2013 Google Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions are | 5 * modification, are permitted provided that the following conditions are |
6 * met: | 6 * met: |
7 * | 7 * |
8 * * Redistributions of source code must retain the above copyright | 8 * * Redistributions of source code must retain the above copyright |
9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
10 * * Redistributions in binary form must reproduce the above | 10 * * Redistributions in binary form must reproduce the above |
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38 #include "platform/heap/Handle.h" | 38 #include "platform/heap/Handle.h" |
39 #include "platform/heap/Heap.h" | 39 #include "platform/heap/Heap.h" |
40 #include "platform/heap/MarkingVisitor.h" | 40 #include "platform/heap/MarkingVisitor.h" |
41 #include "platform/heap/SafePoint.h" | 41 #include "platform/heap/SafePoint.h" |
42 #include "public/platform/Platform.h" | 42 #include "public/platform/Platform.h" |
43 #include "public/platform/WebMemoryAllocatorDump.h" | 43 #include "public/platform/WebMemoryAllocatorDump.h" |
44 #include "public/platform/WebProcessMemoryDump.h" | 44 #include "public/platform/WebProcessMemoryDump.h" |
45 #include "public/platform/WebScheduler.h" | 45 #include "public/platform/WebScheduler.h" |
46 #include "public/platform/WebThread.h" | 46 #include "public/platform/WebThread.h" |
47 #include "public/platform/WebTraceLocation.h" | 47 #include "public/platform/WebTraceLocation.h" |
| 48 #include "wtf/CurrentTime.h" |
48 #include "wtf/DataLog.h" | 49 #include "wtf/DataLog.h" |
49 #include "wtf/Partitions.h" | 50 #include "wtf/Partitions.h" |
50 #include "wtf/ThreadingPrimitives.h" | 51 #include "wtf/ThreadingPrimitives.h" |
51 | 52 |
52 #if OS(WIN) | 53 #if OS(WIN) |
53 #include <stddef.h> | 54 #include <stddef.h> |
54 #include <windows.h> | 55 #include <windows.h> |
55 #include <winnt.h> | 56 #include <winnt.h> |
56 #endif | 57 #endif |
57 | 58 |
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732 | 733 |
733 void ThreadState::performIdleGC(double deadlineSeconds) | 734 void ThreadState::performIdleGC(double deadlineSeconds) |
734 { | 735 { |
735 ASSERT(checkThread()); | 736 ASSERT(checkThread()); |
736 ASSERT(isMainThread()); | 737 ASSERT(isMainThread()); |
737 ASSERT(Platform::current()->currentThread()->scheduler()); | 738 ASSERT(Platform::current()->currentThread()->scheduler()); |
738 | 739 |
739 if (gcState() != IdleGCScheduled) | 740 if (gcState() != IdleGCScheduled) |
740 return; | 741 return; |
741 | 742 |
742 double idleDeltaInSeconds = deadlineSeconds - Platform::current()->monotonic
allyIncreasingTimeSeconds(); | 743 double idleDeltaInSeconds = deadlineSeconds - monotonicallyIncreasingTime(); |
743 TRACE_EVENT2("blink_gc", "ThreadState::performIdleGC", "idleDeltaInSeconds",
idleDeltaInSeconds, "estimatedMarkingTime", Heap::estimatedMarkingTime()); | 744 TRACE_EVENT2("blink_gc", "ThreadState::performIdleGC", "idleDeltaInSeconds",
idleDeltaInSeconds, "estimatedMarkingTime", Heap::estimatedMarkingTime()); |
744 if (idleDeltaInSeconds <= Heap::estimatedMarkingTime() && !Platform::current
()->currentThread()->scheduler()->canExceedIdleDeadlineIfRequired()) { | 745 if (idleDeltaInSeconds <= Heap::estimatedMarkingTime() && !Platform::current
()->currentThread()->scheduler()->canExceedIdleDeadlineIfRequired()) { |
745 // If marking is estimated to take longer than the deadline and we can't | 746 // If marking is estimated to take longer than the deadline and we can't |
746 // exceed the deadline, then reschedule for the next idle period. | 747 // exceed the deadline, then reschedule for the next idle period. |
747 scheduleIdleGC(); | 748 scheduleIdleGC(); |
748 return; | 749 return; |
749 } | 750 } |
750 | 751 |
751 Heap::collectGarbage(BlinkGC::NoHeapPointersOnStack, BlinkGC::GCWithoutSweep
, BlinkGC::IdleGC); | 752 Heap::collectGarbage(BlinkGC::NoHeapPointersOnStack, BlinkGC::GCWithoutSweep
, BlinkGC::IdleGC); |
752 } | 753 } |
753 | 754 |
754 void ThreadState::performIdleLazySweep(double deadlineSeconds) | 755 void ThreadState::performIdleLazySweep(double deadlineSeconds) |
755 { | 756 { |
756 ASSERT(checkThread()); | 757 ASSERT(checkThread()); |
757 ASSERT(isMainThread()); | 758 ASSERT(isMainThread()); |
758 | 759 |
759 // If we are not in a sweeping phase, there is nothing to do here. | 760 // If we are not in a sweeping phase, there is nothing to do here. |
760 if (!isSweepingInProgress()) | 761 if (!isSweepingInProgress()) |
761 return; | 762 return; |
762 | 763 |
763 // This check is here to prevent performIdleLazySweep() from being called | 764 // This check is here to prevent performIdleLazySweep() from being called |
764 // recursively. I'm not sure if it can happen but it would be safer to have | 765 // recursively. I'm not sure if it can happen but it would be safer to have |
765 // the check just in case. | 766 // the check just in case. |
766 if (sweepForbidden()) | 767 if (sweepForbidden()) |
767 return; | 768 return; |
768 | 769 |
769 TRACE_EVENT1("blink_gc", "ThreadState::performIdleLazySweep", "idleDeltaInSe
conds", deadlineSeconds - Platform::current()->monotonicallyIncreasingTimeSecond
s()); | 770 TRACE_EVENT1("blink_gc", "ThreadState::performIdleLazySweep", "idleDeltaInSe
conds", deadlineSeconds - monotonicallyIncreasingTime()); |
770 | 771 |
771 bool sweepCompleted = true; | 772 bool sweepCompleted = true; |
772 SweepForbiddenScope scope(this); | 773 SweepForbiddenScope scope(this); |
773 { | 774 { |
774 double startTime = WTF::currentTimeMS(); | 775 double startTime = WTF::currentTimeMS(); |
775 ScriptForbiddenIfMainThreadScope scriptForbiddenScope; | 776 ScriptForbiddenIfMainThreadScope scriptForbiddenScope; |
776 | 777 |
777 for (int i = 0; i < BlinkGC::NumberOfHeaps; i++) { | 778 for (int i = 0; i < BlinkGC::NumberOfHeaps; i++) { |
778 // lazySweepWithDeadline() won't check the deadline until it sweeps | 779 // lazySweepWithDeadline() won't check the deadline until it sweeps |
779 // 10 pages. So we give a small slack for safety. | 780 // 10 pages. So we give a small slack for safety. |
780 double slack = 0.001; | 781 double slack = 0.001; |
781 double remainingBudget = deadlineSeconds - slack - Platform::current
()->monotonicallyIncreasingTimeSeconds(); | 782 double remainingBudget = deadlineSeconds - slack - monotonicallyIncr
easingTime(); |
782 if (remainingBudget <= 0 || !m_heaps[i]->lazySweepWithDeadline(deadl
ineSeconds)) { | 783 if (remainingBudget <= 0 || !m_heaps[i]->lazySweepWithDeadline(deadl
ineSeconds)) { |
783 // We couldn't finish the sweeping within the deadline. | 784 // We couldn't finish the sweeping within the deadline. |
784 // We request another idle task for the remaining sweeping. | 785 // We request another idle task for the remaining sweeping. |
785 scheduleIdleLazySweep(); | 786 scheduleIdleLazySweep(); |
786 sweepCompleted = false; | 787 sweepCompleted = false; |
787 break; | 788 break; |
788 } | 789 } |
789 } | 790 } |
790 | 791 |
791 accumulateSweepingTime(WTF::currentTimeMS() - startTime); | 792 accumulateSweepingTime(WTF::currentTimeMS() - startTime); |
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1509 threadDump->addScalar("dead_count", "objects", totalDeadCount); | 1510 threadDump->addScalar("dead_count", "objects", totalDeadCount); |
1510 threadDump->addScalar("live_size", "bytes", totalLiveSize); | 1511 threadDump->addScalar("live_size", "bytes", totalLiveSize); |
1511 threadDump->addScalar("dead_size", "bytes", totalDeadSize); | 1512 threadDump->addScalar("dead_size", "bytes", totalDeadSize); |
1512 | 1513 |
1513 WebMemoryAllocatorDump* heapsDump = BlinkGCMemoryDumpProvider::instance()->c
reateMemoryAllocatorDumpForCurrentGC(heapsDumpName); | 1514 WebMemoryAllocatorDump* heapsDump = BlinkGCMemoryDumpProvider::instance()->c
reateMemoryAllocatorDumpForCurrentGC(heapsDumpName); |
1514 WebMemoryAllocatorDump* classesDump = BlinkGCMemoryDumpProvider::instance()-
>createMemoryAllocatorDumpForCurrentGC(classesDumpName); | 1515 WebMemoryAllocatorDump* classesDump = BlinkGCMemoryDumpProvider::instance()-
>createMemoryAllocatorDumpForCurrentGC(classesDumpName); |
1515 BlinkGCMemoryDumpProvider::instance()->currentProcessMemoryDump()->addOwners
hipEdge(classesDump->guid(), heapsDump->guid()); | 1516 BlinkGCMemoryDumpProvider::instance()->currentProcessMemoryDump()->addOwners
hipEdge(classesDump->guid(), heapsDump->guid()); |
1516 } | 1517 } |
1517 | 1518 |
1518 } // namespace blink | 1519 } // namespace blink |
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