Adding upstream version 18.2.2.upstream/18.2.2

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

1 files changed, 34 insertions, 0 deletions

diff --git a/src/rocksdb/table/persistent_cache_options.h b/src/rocksdb/table/persistent_cache_options.h
new file mode 100644
index 000000000..b543ab3a3
--- /dev/null
+++ b/src/rocksdb/table/persistent_cache_options.h
@@ -0,0 +1,34 @@
+//  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 <string>
+
+#include "cache/cache_key.h"
+#include "monitoring/statistics.h"
+#include "rocksdb/persistent_cache.h"
+
+namespace ROCKSDB_NAMESPACE {
+
+// PersistentCacheOptions
+//
+// This describe the caching behavior for page cache
+// This is used to pass the context for caching and the cache handle
+struct PersistentCacheOptions {
+  PersistentCacheOptions() {}
+  explicit PersistentCacheOptions(
+      const std::shared_ptr<PersistentCache>& _persistent_cache,
+      const OffsetableCacheKey& _base_cache_key, Statistics* const _statistics)
+      : persistent_cache(_persistent_cache),
+        base_cache_key(_base_cache_key),
+        statistics(_statistics) {}
+  std::shared_ptr<PersistentCache> persistent_cache;
+  OffsetableCacheKey base_cache_key;
+  Statistics* statistics = nullptr;
+
+  static const PersistentCacheOptions kEmpty;
+};
+
+}  // namespace ROCKSDB_NAMESPACE