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// 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_SNAPSHOT_CONTEXT_SERIALIZER_H_
#define V8_SNAPSHOT_CONTEXT_SERIALIZER_H_
#include "src/objects/contexts.h"
#include "src/snapshot/serializer.h"
namespace v8 {
namespace internal {
class StartupSerializer;
class V8_EXPORT_PRIVATE ContextSerializer : public Serializer {
public:
ContextSerializer(Isolate* isolate, Snapshot::SerializerFlags flags,
StartupSerializer* startup_serializer,
v8::SerializeEmbedderFieldsCallback callback);
~ContextSerializer() override;
ContextSerializer(const ContextSerializer&) = delete;
ContextSerializer& operator=(const ContextSerializer&) = delete;
// Serialize the objects reachable from a single object pointer.
void Serialize(Context* o, const DisallowGarbageCollection& no_gc);
bool can_be_rehashed() const { return can_be_rehashed_; }
private:
void SerializeObjectImpl(Handle<HeapObject> o, SlotType slot_type) override;
bool ShouldBeInTheStartupObjectCache(Tagged<HeapObject> o);
bool ShouldBeInTheSharedObjectCache(Tagged<HeapObject> o);
bool SerializeJSObjectWithEmbedderFields(Handle<JSObject> obj);
void CheckRehashability(Tagged<HeapObject> obj);
StartupSerializer* startup_serializer_;
v8::SerializeEmbedderFieldsCallback serialize_embedder_fields_;
// Indicates whether we only serialized hash tables that we can rehash.
// TODO(yangguo): generalize rehashing, and remove this flag.
bool can_be_rehashed_;
Context context_;
// Used to store serialized data for embedder fields.
SnapshotByteSink embedder_fields_sink_;
};
} // namespace internal
} // namespace v8
#endif // V8_SNAPSHOT_CONTEXT_SERIALIZER_H_
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