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// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
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// This source code is licensed under the BSD-style license found in the
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// LICENSE file in the root directory of this source tree. An additional grant
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// of patent rights can be found in the PATENTS file in the same directory.
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#pragma once
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#include <string>
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#include "rocksdb/env.h"
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namespace rocksdb {
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// This API is experimental. We will mark it stable once we run it in production
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// for a while.
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// NewFlashcacheAwareEnv() creates and Env that blacklists all background
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// threads (used for flush and compaction) from using flashcache to cache their
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// reads. Reads from compaction thread don't need to be cached because they are
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// going to be soon made obsolete (due to nature of compaction)
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// Usually you would pass Env::Default() as base.
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// cachedev_fd is a file descriptor of the flashcache device. Caller has to
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// open flashcache device before calling this API.
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extern std::unique_ptr<Env> NewFlashcacheAwareEnv(
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Env* base, const int cachedev_fd);
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} // namespace rocksdb
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