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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.
#include "src/heap/cppgc/heap-object-header.h"
#include "include/cppgc/internal/api-constants.h"
#include "src/base/macros.h"
#include "src/base/sanitizer/asan.h"
#include "src/heap/cppgc/gc-info-table.h"
#include "src/heap/cppgc/heap-page.h"
namespace cppgc {
namespace internal {
STATIC_ASSERT((kAllocationGranularity % sizeof(HeapObjectHeader)) == 0);
void HeapObjectHeader::CheckApiConstants() {
STATIC_ASSERT(api_constants::kFullyConstructedBitMask ==
FullyConstructedField::kMask);
STATIC_ASSERT(api_constants::kFullyConstructedBitFieldOffsetFromPayload ==
(sizeof(encoded_high_) + sizeof(encoded_low_)));
}
void HeapObjectHeader::Finalize() {
#ifdef V8_USE_ADDRESS_SANITIZER
const size_t size =
IsLargeObject()
? LargePage::From(BasePage::FromPayload(this))->ObjectSize()
: ObjectSize();
ASAN_UNPOISON_MEMORY_REGION(ObjectStart(), size);
#endif // V8_USE_ADDRESS_SANITIZER
const GCInfo& gc_info = GlobalGCInfoTable::GCInfoFromIndex(GetGCInfoIndex());
if (gc_info.finalize) {
gc_info.finalize(ObjectStart());
}
}
HeapObjectName HeapObjectHeader::GetName() const {
const GCInfo& gc_info = GlobalGCInfoTable::GCInfoFromIndex(GetGCInfoIndex());
return gc_info.name(ObjectStart());
}
} // namespace internal
} // namespace cppgc
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