| // 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(__LP64__) |
| |
| BASE_EXPORT bool CheckedPtr2ImplPartitionAllocSupport::EnableForPtr(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 |
