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50 lines
1.1 KiB
C++
50 lines
1.1 KiB
C++
/* Copyright (c) 2008, Avian Contributors
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Permission to use, copy, modify, and/or distribute this software
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for any purpose with or without fee is hereby granted, provided
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that the above copyright notice and this permission notice appear
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in all copies.
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There is NO WARRANTY for this software. See license.txt for
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details. */
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#ifndef HEAPWALK_H
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#define HEAPWALK_H
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#include "common.h"
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namespace vm {
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class Thread;
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class HeapMap {
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public:
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virtual int find(object value) = 0;
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virtual void dispose() = 0;
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};
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class HeapVisitor {
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public:
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virtual void root() = 0;
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virtual unsigned visitNew(object value) = 0;
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virtual void visitOld(object value, unsigned number) = 0;
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virtual void push(object parent, unsigned parentNumber,
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unsigned childOffset) = 0;
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virtual void pop() = 0;
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};
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class HeapWalker {
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public:
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virtual unsigned visitRoot(object root) = 0;
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virtual void visitAllRoots() = 0;
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virtual HeapMap* map() = 0;
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virtual void dispose() = 0;
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};
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HeapWalker*
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makeHeapWalker(Thread* t, HeapVisitor* v);
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} // namespace vm
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#endif//HEAPWALK_H
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