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a119414b2f
The function name and argument descriptor are mapped to a lookup cache at compile time. The cache maps class id to target function. It is resizable. Review URL: https://codereview.chromium.org//11299298 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@15889 260f80e4-7a28-3924-810f-c04153c831b5
54 lines
1.2 KiB
C++
54 lines
1.2 KiB
C++
// Copyright (c) 2012, 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_MEGAMORPHIC_CACHE_TABLE_H_
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#define VM_MEGAMORPHIC_CACHE_TABLE_H_
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#include "vm/allocation.h"
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namespace dart {
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class Array;
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class Function;
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class ObjectPointerVisitor;
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class RawArray;
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class RawFunction;
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class RawMegamorphicCache;
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class RawString;
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class String;
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class MegamorphicCacheTable {
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public:
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MegamorphicCacheTable();
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~MegamorphicCacheTable();
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RawFunction* miss_handler() const { return miss_handler_; }
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void InitMissHandler();
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RawMegamorphicCache* Lookup(const String& name, const Array& descriptor);
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void VisitObjectPointers(ObjectPointerVisitor* visitor);
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void PrintSizes();
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private:
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struct Entry {
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RawString* name;
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RawArray* descriptor;
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RawMegamorphicCache* cache;
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};
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static const int kCapacityIncrement = 128;
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RawFunction* miss_handler_;
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intptr_t capacity_;
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intptr_t length_;
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Entry* table_;
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DISALLOW_COPY_AND_ASSIGN(MegamorphicCacheTable);
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};
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} // namespace dart
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#endif // VM_MEGAMORPHIC_CACHE_TABLE_H_
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