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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_SNAPSHOT_BUILTIN_SERIALIZER_H_
#define V8_SNAPSHOT_BUILTIN_SERIALIZER_H_
#include "src/builtins/builtins.h"
#include "src/interpreter/interpreter.h"
#include "src/snapshot/builtin-serializer-allocator.h"
#include "src/snapshot/serializer.h"
namespace v8 {
namespace internal {
class StartupSerializer;
// Responsible for serializing builtin objects during startup snapshot creation
// into a dedicated area of the snapshot.
// See snapshot.h for documentation of the snapshot layout.
class BuiltinSerializer : public Serializer<BuiltinSerializerAllocator> {
public:
BuiltinSerializer(Isolate* isolate, StartupSerializer* startup_serializer);
~BuiltinSerializer() override;
void SerializeBuiltinsAndHandlers();
private:
void VisitRootPointers(Root root, const char* description, Object** start,
Object** end) override;
void SerializeBuiltin(Code* code);
void SerializeObject(HeapObject* o, HowToCode how_to_code,
WhereToPoint where_to_point, int skip) override;
void SetBuiltinOffset(int builtin_id, uint32_t offset);
void SetHandlerOffset(interpreter::Bytecode bytecode,
interpreter::OperandScale operand_scale,
uint32_t offset);
// The startup serializer is needed for access to the partial snapshot cache,
// which is used to serialize things like embedded constants.
StartupSerializer* startup_serializer_;
// Stores the starting offset, within the serialized data, of each code
// object. This is later packed into the builtin snapshot, and used by the
// builtin deserializer to deserialize individual builtins.
//
// Indices [kFirstBuiltinIndex, kFirstBuiltinIndex + kNumberOfBuiltins[:
// Builtin offsets.
uint32_t code_offsets_[Builtins::builtin_count];
DISALLOW_COPY_AND_ASSIGN(BuiltinSerializer);
};
} // namespace internal
} // namespace v8
#endif // V8_SNAPSHOT_BUILTIN_SERIALIZER_H_
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