zra@google.com
daf539e2f9
1. Instead of making a pass before the Marking phase, this change does not visit code pointers in functions during marking. Then after marking, if the code has still not been marked, code pointers in functions are nulled out. 2. Since code pointers in functions may be nulled out, functions are no longer used as proxies for code in deoptimization info. R=iposva@google.com, srdjan@google.com Review URL: https://codereview.chromium.org//70183010 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@30600 260f80e4-7a28-3924-810f-c04153c831b5
57 lines
1.8 KiB
C++
57 lines
1.8 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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bool collect_code);
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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 ProcessWeakTables(PageSpace* page_space);
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void ProcessObjectIdTable(Isolate* isolate);
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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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