cshapiro@google.com
0928c651e5
The previous algorithm would visit each pointer in the heap and verify it without regard for whether the pointer had already been visited. The new algorithm computes the set of allocated objects and verifies each object in the set. In a second pass, each pointer is visited and tested for membership in the set. BUG=2606 Review URL: https://chromiumcodereview.appspot.com//10696029 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@9532 260f80e4-7a28-3924-810f-c04153c831b5
82 lines
2.1 KiB
C++
82 lines
2.1 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_VERIFIER_H_
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#define VM_VERIFIER_H_
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#include "vm/flags.h"
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#include "vm/globals.h"
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#include "vm/handles.h"
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#include "vm/visitor.h"
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namespace dart {
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DECLARE_FLAG(bool, verify_on_transition);
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#define VERIFY_ON_TRANSITION \
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if (FLAG_verify_on_transition) { \
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VerifyPointersVisitor::VerifyPointers(); \
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Isolate::Current()->heap()->Verify(); \
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} \
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// Forward declarations.
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class Isolate;
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class ObjectSet;
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class RawObject;
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class VerifyObjectVisitor : public ObjectVisitor {
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public:
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VerifyObjectVisitor(Isolate* isolate, ObjectSet* allocated_set)
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: ObjectVisitor(isolate),
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allocated_set_(allocated_set) {
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}
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virtual void VisitObject(RawObject* obj);
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private:
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ObjectSet* allocated_set_;
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DISALLOW_COPY_AND_ASSIGN(VerifyObjectVisitor);
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};
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// A sample object pointer visitor implementation which verifies that
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// the pointers visited are contained in the isolate heap.
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class VerifyPointersVisitor : public ObjectPointerVisitor {
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public:
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explicit VerifyPointersVisitor(Isolate* isolate, ObjectSet* allocated_set)
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: ObjectPointerVisitor(isolate),
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allocated_set_(allocated_set) {
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}
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virtual void VisitPointers(RawObject** first, RawObject** last);
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static void VerifyPointers();
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private:
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ObjectSet* allocated_set_;
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DISALLOW_COPY_AND_ASSIGN(VerifyPointersVisitor);
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};
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class VerifyWeakPointersVisitor : public HandleVisitor {
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public:
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explicit VerifyWeakPointersVisitor(VerifyPointersVisitor* visitor)
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: visitor_(visitor) {
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}
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virtual void VisitHandle(uword addr);
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private:
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ObjectPointerVisitor* visitor_;
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ObjectSet* allocated_set;
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DISALLOW_COPY_AND_ASSIGN(VerifyWeakPointersVisitor);
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};
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} // namespace dart
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#endif // VM_VERIFIER_H_
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