1 // Copyright 2017 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_SETUP_ISOLATE_H_ 6 #define V8_SETUP_ISOLATE_H_ 7 8 namespace v8 { 9 namespace internal { 10 11 class Builtins; 12 class Code; 13 class Heap; 14 class Isolate; 15 16 namespace interpreter { 17 class Interpreter; 18 } // namespace interpreter 19 20 // This class is an abstraction layer around initialization of components 21 // that are either deserialized from the snapshot or generated from scratch. 22 // Currently this includes builtins and interpreter bytecode handlers. 23 // There are two implementations to choose from at link time: 24 // - setup-isolate-deserialize.cc: always loads things from snapshot. 25 // - setup-isolate-full.cc: loads from snapshot or bootstraps from scratch, 26 // controlled by the |create_heap_objects| flag. 27 // For testing, the implementation in setup-isolate-for-tests.cc can be chosen 28 // to force the behavior of setup-isolate-full.cc at runtime. 29 // 30 // The actual implementations of generation of builtins and handlers is in 31 // setup-builtins-internal.cc and setup-interpreter-internal.cc, and is 32 // linked in by the latter two Delegate implementations. 33 class SetupIsolateDelegate { 34 public: 35 explicit SetupIsolateDelegate(bool create_heap_objects) 36 : create_heap_objects_(create_heap_objects) {} 37 virtual ~SetupIsolateDelegate() {} 38 39 virtual void SetupBuiltins(Isolate* isolate); 40 41 virtual void SetupInterpreter(interpreter::Interpreter* interpreter); 42 43 virtual bool SetupHeap(Heap* heap); 44 45 protected: 46 static void SetupBuiltinsInternal(Isolate* isolate); 47 static void AddBuiltin(Builtins* builtins, int index, Code* code); 48 static void PopulateWithPlaceholders(Isolate* isolate); 49 static void ReplacePlaceholders(Isolate* isolate); 50 51 static bool SetupHeapInternal(Heap* heap); 52 53 const bool create_heap_objects_; 54 }; 55 56 } // namespace internal 57 } // namespace v8 58 59 #endif // V8_SETUP_ISOLATE_H_ 60
