// Copyright 2017 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef V8_SETUP_ISOLATE_H_
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#define V8_SETUP_ISOLATE_H_
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namespace v8 {
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namespace internal {
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class Builtins;
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class Code;
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class Heap;
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class Isolate;
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namespace interpreter {
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class Interpreter;
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} // namespace interpreter
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// This class is an abstraction layer around initialization of components
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// that are either deserialized from the snapshot or generated from scratch.
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// Currently this includes builtins and interpreter bytecode handlers.
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// There are two implementations to choose from at link time:
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// - setup-isolate-deserialize.cc: always loads things from snapshot.
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// - setup-isolate-full.cc: loads from snapshot or bootstraps from scratch,
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// controlled by the |create_heap_objects| flag.
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// For testing, the implementation in setup-isolate-for-tests.cc can be chosen
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// to force the behavior of setup-isolate-full.cc at runtime.
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//
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// The actual implementations of generation of builtins and handlers is in
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// setup-builtins-internal.cc and setup-interpreter-internal.cc, and is
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// linked in by the latter two Delegate implementations.
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class SetupIsolateDelegate {
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public:
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explicit SetupIsolateDelegate(bool create_heap_objects)
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: create_heap_objects_(create_heap_objects) {}
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virtual ~SetupIsolateDelegate() {}
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virtual void SetupBuiltins(Isolate* isolate);
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virtual void SetupInterpreter(interpreter::Interpreter* interpreter);
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virtual bool SetupHeap(Heap* heap);
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protected:
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static void SetupBuiltinsInternal(Isolate* isolate);
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static void AddBuiltin(Builtins* builtins, int index, Code* code);
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static void PopulateWithPlaceholders(Isolate* isolate);
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static void ReplacePlaceholders(Isolate* isolate);
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static bool SetupHeapInternal(Heap* heap);
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const bool create_heap_objects_;
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};
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} // namespace internal
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} // namespace v8
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#endif // V8_SETUP_ISOLATE_H_
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