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// Copyright 2020 The Chromium 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 "base/memory/checked_ptr.h"
#include "base/allocator/partition_allocator/partition_alloc.h"
namespace base {
namespace internal {
#if defined(ARCH_CPU_64_BITS) && !defined(OS_NACL)
BASE_EXPORT bool CheckedPtr2ImplPartitionAllocSupport::EnabledForPtr(
void* ptr) {
// CheckedPtr2Impl works only when memory is allocated by PartitionAlloc and
// only only if the pointer points to the beginning of the allocated slot.
//
// TODO(bartekn): Add |&& PartitionAllocGetSlotOffset(ptr) == 0|
// CheckedPtr2Impl uses a fake implementation at the moment, which happens to
// work even for non-0 offsets, so skip this check for now to get a better
// coverage.
return IsManagedByPartitionAlloc(ptr);
}
#endif
} // namespace internal
} // namespace base
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