cshapiro@google.com
40604757dc
This change provides getters and setters for a lazily allocated field associated with every heap allocated object. It is a generalization of the peer field of external string instances, external byte array instances, and the smrck field of closure instances. Review URL: https://chromiumcodereview.appspot.com//10905251 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@12511 260f80e4-7a28-3924-810f-c04153c831b5
54 lines
1.7 KiB
C++
54 lines
1.7 KiB
C++
// Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#ifndef VM_GC_MARKER_H_
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#define VM_GC_MARKER_H_
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#include "vm/allocation.h"
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namespace dart {
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// Forward declarations.
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class HandleVisitor;
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class Heap;
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class Isolate;
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class MarkingVisitor;
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class ObjectPointerVisitor;
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class PageSpace;
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class RawWeakProperty;
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// The class GCMarker is used to mark reachable old generation objects as part
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// of the mark-sweep collection. The marking bit used is defined in RawObject.
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class GCMarker : public ValueObject {
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public:
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explicit GCMarker(Heap* heap) : heap_(heap) { }
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~GCMarker() { }
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void MarkObjects(Isolate* isolate,
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PageSpace* page_space,
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bool invoke_api_callbacks);
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private:
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void Prologue(Isolate* isolate, bool invoke_api_callbacks);
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void Epilogue(Isolate* isolate, bool invoke_api_callbacks);
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void IterateRoots(Isolate* isolate,
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ObjectPointerVisitor* visitor,
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bool visit_prologue_weak_persistent_handles);
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void IterateWeakRoots(Isolate* isolate,
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HandleVisitor* visitor,
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bool visit_prologue_weak_persistent_handles);
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void IterateWeakReferences(Isolate* isolate, MarkingVisitor* visitor);
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void DrainMarkingStack(Isolate* isolate, MarkingVisitor* visitor);
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void ProcessWeakProperty(RawWeakProperty* raw_weak, MarkingVisitor* visitor);
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void ProcessPeerReferents(PageSpace* page_space);
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Heap* heap_;
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DISALLOW_IMPLICIT_CONSTRUCTORS(GCMarker);
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};
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} // namespace dart
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#endif // VM_GC_MARKER_H_
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