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Issue 3310015: Merge r5416 into 2.3 branch. (Closed) Base URL: http://v8.googlecode.com/svn/branches/2.3/
Patch Set: Created 10 years, 3 months ago
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1 // Copyright 2006-2008 the V8 project authors. All rights reserved. 1 // Copyright 2006-2008 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without 2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are 3 // modification, are permitted provided that the following conditions are
4 // met: 4 // met:
5 // 5 //
6 // * Redistributions of source code must retain the above copyright 6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer. 7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above 8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following 9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided 10 // disclaimer in the documentation and/or other materials provided
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632 } 632 }
633 633
634 #ifdef ENABLE_DEBUGGER_SUPPORT 634 #ifdef ENABLE_DEBUGGER_SUPPORT
635 if (Debug::IsLoaded() || Debug::has_break_points()) { 635 if (Debug::IsLoaded() || Debug::has_break_points()) {
636 StaticMarkingVisitor::EnableCodeFlushing(false); 636 StaticMarkingVisitor::EnableCodeFlushing(false);
637 return; 637 return;
638 } 638 }
639 #endif 639 #endif
640 StaticMarkingVisitor::EnableCodeFlushing(true); 640 StaticMarkingVisitor::EnableCodeFlushing(true);
641 641
642 // Ensure that empty descriptor array is marked. Method MarkDescriptorArray
643 // relies on it being marked before any other descriptor array.
644 MarkObject(Heap::raw_unchecked_empty_descriptor_array());
645
642 // Make sure we are not referencing the code from the stack. 646 // Make sure we are not referencing the code from the stack.
643 for (StackFrameIterator it; !it.done(); it.Advance()) { 647 for (StackFrameIterator it; !it.done(); it.Advance()) {
644 MarkCompactCollector::MarkObject(it.frame()->unchecked_code()); 648 MarkObject(it.frame()->unchecked_code());
645 } 649 }
646 650
647 // Iterate the archived stacks in all threads to check if 651 // Iterate the archived stacks in all threads to check if
648 // the code is referenced. 652 // the code is referenced.
649 CodeMarkingVisitor code_marking_visitor; 653 CodeMarkingVisitor code_marking_visitor;
650 ThreadManager::IterateArchivedThreads(&code_marking_visitor); 654 ThreadManager::IterateArchivedThreads(&code_marking_visitor);
651 655
652 SharedFunctionInfoMarkingVisitor visitor; 656 SharedFunctionInfoMarkingVisitor visitor;
653 CompilationCache::IterateFunctions(&visitor); 657 CompilationCache::IterateFunctions(&visitor);
654 658
655 MarkCompactCollector::ProcessMarkingStack(); 659 ProcessMarkingStack();
656 } 660 }
657 661
658 662
659 // Visitor class for marking heap roots. 663 // Visitor class for marking heap roots.
660 class RootMarkingVisitor : public ObjectVisitor { 664 class RootMarkingVisitor : public ObjectVisitor {
661 public: 665 public:
662 void VisitPointer(Object** p) { 666 void VisitPointer(Object** p) {
663 MarkObjectByPointer(p); 667 MarkObjectByPointer(p);
664 } 668 }
665 669
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2664 } 2668 }
2665 2669
2666 2670
2667 void MarkCompactCollector::Initialize() { 2671 void MarkCompactCollector::Initialize() {
2668 StaticPointersToNewGenUpdatingVisitor::Initialize(); 2672 StaticPointersToNewGenUpdatingVisitor::Initialize();
2669 StaticMarkingVisitor::Initialize(); 2673 StaticMarkingVisitor::Initialize();
2670 } 2674 }
2671 2675
2672 2676
2673 } } // namespace v8::internal 2677 } } // namespace v8::internal
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