Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1 | // Copyright 2016 the V8 project authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #ifndef V8_EXTERNAL_REFERENCE_TABLE_H_ |
| 6 | #define V8_EXTERNAL_REFERENCE_TABLE_H_ |
| 7 | |
| 8 | #include "src/address-map.h" |
| 9 | |
| 10 | namespace v8 { |
| 11 | namespace internal { |
| 12 | |
| 13 | class Isolate; |
| 14 | |
| 15 | // ExternalReferenceTable is a helper class that defines the relationship |
| 16 | // between external references and their encodings. It is used to build |
| 17 | // hashmaps in ExternalReferenceEncoder and ExternalReferenceDecoder. |
| 18 | class ExternalReferenceTable { |
| 19 | public: |
| 20 | static ExternalReferenceTable* instance(Isolate* isolate); |
| 21 | |
| 22 | int size() const { return refs_.length(); } |
| 23 | Address address(int i) { return refs_[i].address; } |
| 24 | const char* name(int i) { return refs_[i].name; } |
| 25 | |
| 26 | inline static Address NotAvailable() { return NULL; } |
| 27 | |
| 28 | static const int kDeoptTableSerializeEntryCount = 64; |
| 29 | |
| 30 | private: |
| 31 | struct ExternalReferenceEntry { |
| 32 | Address address; |
| 33 | const char* name; |
| 34 | }; |
| 35 | |
| 36 | explicit ExternalReferenceTable(Isolate* isolate); |
| 37 | |
| 38 | void Add(Address address, const char* name) { |
| 39 | ExternalReferenceEntry entry = {address, name}; |
| 40 | refs_.Add(entry); |
| 41 | } |
| 42 | |
| 43 | List<ExternalReferenceEntry> refs_; |
| 44 | |
| 45 | DISALLOW_COPY_AND_ASSIGN(ExternalReferenceTable); |
| 46 | }; |
| 47 | |
| 48 | } // namespace internal |
| 49 | } // namespace v8 |
| 50 | #endif // V8_EXTERNAL_REFERENCE_TABLE_H_ |