Adding upstream version 18.2.2.upstream/18.2.2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

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