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// Copyright 2017 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_INIT_SETUP_ISOLATE_H_
#define V8_INIT_SETUP_ISOLATE_H_
#include "src/base/macros.h"
namespace v8 {
namespace internal {
class Builtins;
enum class Builtin : int32_t;
class Code;
class Heap;
class Isolate;
// This class is an abstraction layer around initialization of components
// that are either deserialized from the snapshot or generated from scratch.
// Currently this includes builtins and interpreter bytecode handlers.
// There are two implementations to choose from at link time:
// - setup-isolate-deserialize.cc: always loads things from snapshot.
// - setup-isolate-full.cc: loads from snapshot or bootstraps from scratch,
// controlled by the |create_heap_objects| flag.
// For testing, the implementation in setup-isolate-for-tests.cc can be chosen
// to force the behavior of setup-isolate-full.cc at runtime.
//
// The actual implementations of generation of builtins and handlers is in
// setup-builtins-internal.cc and setup-interpreter-internal.cc, and is
// linked in by the latter two Delegate implementations.
class V8_EXPORT_PRIVATE SetupIsolateDelegate {
public:
explicit SetupIsolateDelegate(bool create_heap_objects)
: create_heap_objects_(create_heap_objects) {}
virtual ~SetupIsolateDelegate() = default;
virtual void SetupBuiltins(Isolate* isolate);
virtual bool SetupHeap(Heap* heap);
protected:
static void SetupBuiltinsInternal(Isolate* isolate);
static void AddBuiltin(Builtins* builtins, Builtin builtin, Code code);
static void PopulateWithPlaceholders(Isolate* isolate);
static void ReplacePlaceholders(Isolate* isolate);
static bool SetupHeapInternal(Heap* heap);
const bool create_heap_objects_;
};
} // namespace internal
} // namespace v8
#endif // V8_INIT_SETUP_ISOLATE_H_
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