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// Copyright 2021 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_SERIALIZER_INL_H_
#define V8_SNAPSHOT_SERIALIZER_INL_H_
#include "src/roots/roots-inl.h"
#include "src/snapshot/serializer.h"
namespace v8 {
namespace internal {
bool Serializer::IsNotMappedSymbol(HeapObject obj) const {
Object not_mapped_symbol = ReadOnlyRoots(isolate()).not_mapped_symbol();
if (V8_EXTERNAL_CODE_SPACE_BOOL) {
// It's possible that a Code object might have the same compressed value
// as the not_mapped_symbol, so we must compare full pointers.
// TODO(v8:11880): Avoid the need for this special case by never putting
// Code references anywhere except the CodeDadaContainer objects.
// In particular, the Code objects should not appear in serializer's
// identity map. This should be possible once the IsolateData::builtins
// table is migrated to contain CodeT references.
return obj.ptr() == not_mapped_symbol.ptr();
}
return obj == not_mapped_symbol;
}
} // namespace internal
} // namespace v8
#endif // V8_SNAPSHOT_SERIALIZER_INL_H_
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