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Diffstat (limited to 'storage/rocksdb/rocksdb/memory/memory_allocator.h')
-rw-r--r-- | storage/rocksdb/rocksdb/memory/memory_allocator.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/storage/rocksdb/rocksdb/memory/memory_allocator.h b/storage/rocksdb/rocksdb/memory/memory_allocator.h new file mode 100644 index 00000000..f1a54865 --- /dev/null +++ b/storage/rocksdb/rocksdb/memory/memory_allocator.h @@ -0,0 +1,38 @@ +// Copyright (c) 2011-present, Facebook, Inc. All rights reserved. +// This source code is licensed under both the GPLv2 (found in the +// COPYING file in the root directory) and Apache 2.0 License +// (found in the LICENSE.Apache file in the root directory). +// + +#pragma once + +#include "rocksdb/memory_allocator.h" + +namespace ROCKSDB_NAMESPACE { + +struct CustomDeleter { + CustomDeleter(MemoryAllocator* a = nullptr) : allocator(a) {} + + void operator()(char* ptr) const { + if (allocator) { + allocator->Deallocate(reinterpret_cast<void*>(ptr)); + } else { + delete[] ptr; + } + } + + MemoryAllocator* allocator; +}; + +using CacheAllocationPtr = std::unique_ptr<char[], CustomDeleter>; + +inline CacheAllocationPtr AllocateBlock(size_t size, + MemoryAllocator* allocator) { + if (allocator) { + auto block = reinterpret_cast<char*>(allocator->Allocate(size)); + return CacheAllocationPtr(block, allocator); + } + return CacheAllocationPtr(new char[size]); +} + +} // namespace ROCKSDB_NAMESPACE |