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authordgrogan@chromium.org <dgrogan@chromium.org@62dab493-f737-651d-591e-8d6aee1b9529>2011-04-19 23:01:25 +0000
committerdgrogan@chromium.org <dgrogan@chromium.org@62dab493-f737-651d-591e-8d6aee1b9529>2011-04-19 23:01:25 +0000
commitb743906eeabc925f3e824d91a9747012bf249e2f (patch)
treee7cb4f854196c43045756469627920e4e7b146c1 /db/table_cache.h
parentb409afe968b6917574ec08e02c4bf6e6f722e3ca (diff)
downloadleveldb-b743906eeabc925f3e824d91a9747012bf249e2f.tar.gz
Revision created by MOE tool push_codebase.
MOE_MIGRATION= git-svn-id: https://leveldb.googlecode.com/svn/trunk@22 62dab493-f737-651d-591e-8d6aee1b9529
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-// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file. See the AUTHORS file for names of contributors.
-//
-// Thread-safe (provides internal synchronization)
-
-#ifndef STORAGE_LEVELDB_DB_TABLE_CACHE_H_
-#define STORAGE_LEVELDB_DB_TABLE_CACHE_H_
-
-#include <string>
-#include <stdint.h>
-#include "db/dbformat.h"
-#include "leveldb/cache.h"
-#include "leveldb/table.h"
-#include "port/port.h"
-
-namespace leveldb {
-
-class Env;
-
-class TableCache {
- public:
- TableCache(const std::string& dbname, const Options* options, int entries);
- ~TableCache();
-
- // Return an iterator for the specified file number (the corresponding
- // file length must be exactly "file_size" bytes). If "tableptr" is
- // non-NULL, also sets "*tableptr" to point to the Table object
- // underlying the returned iterator, or NULL if no Table object underlies
- // the returned iterator. The returned "*tableptr" object is owned by
- // the cache and should not be deleted, and is valid for as long as the
- // returned iterator is live.
- Iterator* NewIterator(const ReadOptions& options,
- uint64_t file_number,
- uint64_t file_size,
- Table** tableptr = NULL);
-
- // Evict any entry for the specified file number
- void Evict(uint64_t file_number);
-
- private:
- Env* const env_;
- const std::string dbname_;
- const Options* options_;
- Cache* cache_;
-};
-
-}
-
-#endif // STORAGE_LEVELDB_DB_TABLE_CACHE_H_