| // Copyright 2016 the V8 project authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef V8_EXTERNAL_REFERENCE_TABLE_H_ |
| #define V8_EXTERNAL_REFERENCE_TABLE_H_ |
| |
| #include <vector> |
| |
| #include "src/address-map.h" |
| |
| namespace v8 { |
| namespace internal { |
| |
| class Isolate; |
| |
| // ExternalReferenceTable is a helper class that defines the relationship |
| // between external references and their encodings. It is used to build |
| // hashmaps in ExternalReferenceEncoder and ExternalReferenceDecoder. |
| class ExternalReferenceTable { |
| public: |
| static ExternalReferenceTable* instance(Isolate* isolate); |
| ~ExternalReferenceTable(); |
| |
| uint32_t size() const { return static_cast<uint32_t>(refs_.length()); } |
| Address address(uint32_t i) { return refs_[i].address; } |
| const char* name(uint32_t i) { return refs_[i].name; } |
| bool is_api_reference(uint32_t i) { return i >= api_refs_start_; } |
| uint32_t num_api_references() { return size() - api_refs_start_; } |
| |
| #ifdef DEBUG |
| void increment_count(uint32_t i) { refs_[i].count++; } |
| int count(uint32_t i) { return refs_[i].count; } |
| void ResetCount(); |
| void PrintCount(); |
| #endif // DEBUG |
| |
| static const char* ResolveSymbol(void* address, |
| std::vector<char**>* = nullptr); |
| |
| private: |
| struct ExternalReferenceEntry { |
| Address address; |
| const char* name; |
| #ifdef DEBUG |
| int count; |
| #endif // DEBUG |
| }; |
| |
| explicit ExternalReferenceTable(Isolate* isolate); |
| |
| void Add(Address address, const char* name) { |
| #ifdef DEBUG |
| ExternalReferenceEntry entry = {address, name, 0}; |
| #else |
| ExternalReferenceEntry entry = {address, name}; |
| #endif // DEBUG |
| refs_.Add(entry); |
| } |
| |
| void AddReferences(Isolate* isolate); |
| void AddBuiltins(Isolate* isolate); |
| void AddRuntimeFunctions(Isolate* isolate); |
| void AddIsolateAddresses(Isolate* isolate); |
| void AddAccessors(Isolate* isolate); |
| void AddStubCache(Isolate* isolate); |
| void AddApiReferences(Isolate* isolate); |
| |
| List<ExternalReferenceEntry> refs_; |
| #ifdef DEBUG |
| std::vector<char**> symbol_tables_; |
| #endif |
| uint32_t api_refs_start_; |
| |
| DISALLOW_COPY_AND_ASSIGN(ExternalReferenceTable); |
| }; |
| |
| } // namespace internal |
| } // namespace v8 |
| #endif // V8_EXTERNAL_REFERENCE_TABLE_H_ |