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// Copyright 2020 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 INCLUDE_CPPGC_INTERNAL_GC_INFO_H_
#define INCLUDE_CPPGC_INTERNAL_GC_INFO_H_
#include <stdint.h>
#include "cppgc/internal/finalizer-trait.h"
#include "cppgc/trace-trait.h"
#include "v8config.h" // NOLINT(build/include_directory)
namespace cppgc {
namespace internal {
using GCInfoIndex = uint16_t;
class V8_EXPORT RegisteredGCInfoIndex final {
public:
RegisteredGCInfoIndex(FinalizationCallback finalization_callback,
TraceCallback trace_callback, bool has_v_table);
GCInfoIndex GetIndex() const { return index_; }
private:
const GCInfoIndex index_;
};
// Trait determines how the garbage collector treats objects wrt. to traversing,
// finalization, and naming.
template <typename T>
struct GCInfoTrait {
static GCInfoIndex Index() {
static_assert(sizeof(T), "T must be fully defined");
static const RegisteredGCInfoIndex registered_index(
FinalizerTrait<T>::kCallback, TraceTrait<T>::Trace,
std::is_polymorphic<T>::value);
return registered_index.GetIndex();
}
};
} // namespace internal
} // namespace cppgc
#endif // INCLUDE_CPPGC_INTERNAL_GC_INFO_H_
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