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61955a0dda
Summary: Add RocksObject, the base class of all java objects which has a c++ pointer. While the finalizer of a RocksObject will release its c++ resource, it is suggested to call its RocksObject.dispose() to manually release its c++ resource. Existing RocksDB java classes are now extending RocksObject. Test Plan: make rocksdbjava make jtest make jdb_bench Reviewers: haobo, dhruba, sdong, ankgup87, rsumbaly, swapnilghike, zzbennett Reviewed By: haobo CC: leveldb Differential Revision: https://reviews.facebook.net/D18411
45 lines
1.3 KiB
Java
45 lines
1.3 KiB
Java
// Copyright (c) 2014, 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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package org.rocksdb;
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/**
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* BackupableDBOptions to control the behavior of a backupable database.
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* It will be used during the creation of a BackupableDB.
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*
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* Note that dispose() must be called before an Options instance
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* become out-of-scope to release the allocated memory in c++.
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*/
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public class BackupableDBOptions extends RocksObject {
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public BackupableDBOptions(String path) {
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super();
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newBackupableDBOptions(path);
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}
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/**
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* Returns the path to the BackupableDB directory.
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*
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* @return the path to the BackupableDB directory.
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*/
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public String backupDir() {
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assert(isInitialized());
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return backupDir(nativeHandle_);
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}
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/**
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* Release the memory allocated for the current instance
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* in the c++ side.
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*/
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@Override public synchronized void dispose() {
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if (isInitialized()) {
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dispose(nativeHandle_);
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}
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}
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private native void newBackupableDBOptions(String path);
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private native String backupDir(long handle);
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private native void dispose(long handle);
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}
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