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44 lines
1.2 KiB
44 lines
1.2 KiB
1 year ago
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// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
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// Copyright (c) 2019 Intel Corporation
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// This source code is licensed under both the GPLv2 (found in the
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// COPYING file in the root directory) and Apache 2.0 License
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// (found in the LICENSE.Apache file in the root directory).
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#pragma once
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#include "rocksdb/memory_allocator.h"
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#include "utilities/memory_allocators.h"
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namespace ROCKSDB_NAMESPACE {
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class MemkindKmemAllocator : public BaseMemoryAllocator {
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public:
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static const char* kClassName() { return "MemkindKmemAllocator"; }
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const char* Name() const override { return kClassName(); }
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static bool IsSupported() {
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std::string unused;
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return IsSupported(&unused);
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}
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static bool IsSupported(std::string* msg) {
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#ifdef MEMKIND
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(void)msg;
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return true;
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#else
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*msg = "Not compiled with MemKind";
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return false;
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#endif
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}
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Status PrepareOptions(const ConfigOptions& options) override;
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#ifdef MEMKIND
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void* Allocate(size_t size) override;
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void Deallocate(void* p) override;
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#ifdef ROCKSDB_MALLOC_USABLE_SIZE
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size_t UsableSize(void* p, size_t /*allocation_size*/) const override;
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#endif
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#endif // MEMKIND
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};
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} // namespace ROCKSDB_NAMESPACE
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