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Diffstat (limited to 'src/rocksdb/memory/memkind_kmem_allocator.h')
-rw-r--r-- | src/rocksdb/memory/memkind_kmem_allocator.h | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/src/rocksdb/memory/memkind_kmem_allocator.h b/src/rocksdb/memory/memkind_kmem_allocator.h new file mode 100644 index 000000000..7176f17e3 --- /dev/null +++ b/src/rocksdb/memory/memkind_kmem_allocator.h @@ -0,0 +1,43 @@ +// Copyright (c) 2011-present, Facebook, Inc. All rights reserved. +// Copyright (c) 2019 Intel Corporation +// 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" +#include "utilities/memory_allocators.h" + +namespace ROCKSDB_NAMESPACE { + +class MemkindKmemAllocator : public BaseMemoryAllocator { + public: + static const char* kClassName() { return "MemkindKmemAllocator"; } + const char* Name() const override { return kClassName(); } + static bool IsSupported() { + std::string unused; + return IsSupported(&unused); + } + + static bool IsSupported(std::string* msg) { +#ifdef MEMKIND + (void)msg; + return true; +#else + *msg = "Not compiled with MemKind"; + return false; +#endif + } + Status PrepareOptions(const ConfigOptions& options) override; + +#ifdef MEMKIND + void* Allocate(size_t size) override; + void Deallocate(void* p) override; +#ifdef ROCKSDB_MALLOC_USABLE_SIZE + size_t UsableSize(void* p, size_t /*allocation_size*/) const override; +#endif +#endif // MEMKIND +}; + +} // namespace ROCKSDB_NAMESPACE |