1// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
2// for details. All rights reserved. Use of this source code is governed by a
3// BSD-style license that can be found in the LICENSE file.
4
5#ifndef RUNTIME_VM_HEAP_WEAK_CODE_H_
6#define RUNTIME_VM_HEAP_WEAK_CODE_H_
7
8#include "vm/allocation.h"
9#include "vm/globals.h"
10
11namespace dart {
12
13class Array;
14class Code;
15
16// Helper class to handle an array of code weak properties. Implements
17// registration and disabling of stored code objects.
18class WeakCodeReferences : public ValueObject {
19 public:
20 explicit WeakCodeReferences(const Array& value) : array_(value) {}
21 virtual ~WeakCodeReferences() {}
22
23 void Register(const Code& value);
24
25 virtual void UpdateArrayTo(const Array& array) = 0;
26 virtual void ReportDeoptimization(const Code& code) = 0;
27 virtual void ReportSwitchingCode(const Code& code) = 0;
28
29 static bool IsOptimizedCode(const Array& dependent_code, const Code& code);
30
31 void DisableCode();
32
33 bool HasCodes() const;
34
35 private:
36 const Array& array_; // Array of Code objects.
37 DISALLOW_COPY_AND_ASSIGN(WeakCodeReferences);
38};
39
40} // namespace dart
41
42#endif // RUNTIME_VM_HEAP_WEAK_CODE_H_
43