Android Open Source - android-checkers-app Pooling Byte Array Output Stream






From Project

Back to project page android-checkers-app.

License

The source code is released under:

Apache License

If you think the Android project android-checkers-app listed in this page is inappropriate, such as containing malicious code/tools or violating the copyright, please email info at java2s dot com, thanks.

Java Source Code

/*
 * Copyright (C) 2012 The Android Open Source Project
 */* ww  w .j a v  a 2s.  co  m*/
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.android.volley.toolbox;

import java.io.ByteArrayOutputStream;
import java.io.IOException;

/**
 * A variation of {@link java.io.ByteArrayOutputStream} that uses a pool of byte[] buffers instead
 * of always allocating them fresh, saving on heap churn.
 */
public class PoolingByteArrayOutputStream extends ByteArrayOutputStream {
    /**
     * If the {@link #PoolingByteArrayOutputStream(ByteArrayPool)} constructor is called, this is
     * the default size to which the underlying byte array is initialized.
     */
    private static final int DEFAULT_SIZE = 256;

    private final ByteArrayPool mPool;

    /**
     * Constructs a new PoolingByteArrayOutputStream with a default size. If more bytes are written
     * to this instance, the underlying byte array will expand.
     */
    public PoolingByteArrayOutputStream(ByteArrayPool pool) {
        this(pool, DEFAULT_SIZE);
    }

    /**
     * Constructs a new {@code ByteArrayOutputStream} with a default size of {@code size} bytes. If
     * more than {@code size} bytes are written to this instance, the underlying byte array will
     * expand.
     *
     * @param size initial size for the underlying byte array. The value will be pinned to a default
     *        minimum size.
     */
    public PoolingByteArrayOutputStream(ByteArrayPool pool, int size) {
        mPool = pool;
        buf = mPool.getBuf(Math.max(size, DEFAULT_SIZE));
    }

    @Override
    public void close() throws IOException {
        mPool.returnBuf(buf);
        buf = null;
        super.close();
    }

    @Override
    public void finalize() {
        mPool.returnBuf(buf);
    }

    /**
     * Ensures there is enough space in the buffer for the given number of additional bytes.
     */
    private void expand(int i) {
        /* Can the buffer handle @i more bytes, if not expand it */
        if (count + i <= buf.length) {
            return;
        }
        byte[] newbuf = mPool.getBuf((count + i) * 2);
        System.arraycopy(buf, 0, newbuf, 0, count);
        mPool.returnBuf(buf);
        buf = newbuf;
    }

    @Override
    public synchronized void write(byte[] buffer, int offset, int len) {
        expand(len);
        super.write(buffer, offset, len);
    }

    @Override
    public synchronized void write(int oneByte) {
        expand(1);
        super.write(oneByte);
    }
}




Java Source Code List

com.android.volley.AuthFailureError.java
com.android.volley.CacheDispatcher.java
com.android.volley.Cache.java
com.android.volley.DefaultRetryPolicy.java
com.android.volley.ExecutorDelivery.java
com.android.volley.NetworkDispatcher.java
com.android.volley.NetworkError.java
com.android.volley.NetworkResponse.java
com.android.volley.Network.java
com.android.volley.NoConnectionError.java
com.android.volley.ParseError.java
com.android.volley.RequestQueue.java
com.android.volley.Request.java
com.android.volley.ResponseDelivery.java
com.android.volley.Response.java
com.android.volley.RetryPolicy.java
com.android.volley.ServerError.java
com.android.volley.TimeoutError.java
com.android.volley.VolleyError.java
com.android.volley.VolleyLog.java
com.android.volley.toolbox.AndroidAuthenticator.java
com.android.volley.toolbox.Authenticator.java
com.android.volley.toolbox.BasicNetwork.java
com.android.volley.toolbox.ByteArrayPool.java
com.android.volley.toolbox.ClearCacheRequest.java
com.android.volley.toolbox.DiskBasedCache.java
com.android.volley.toolbox.HttpClientStack.java
com.android.volley.toolbox.HttpHeaderParser.java
com.android.volley.toolbox.HttpStack.java
com.android.volley.toolbox.HurlStack.java
com.android.volley.toolbox.ImageLoader.java
com.android.volley.toolbox.ImageRequest.java
com.android.volley.toolbox.JsonArrayRequest.java
com.android.volley.toolbox.JsonObjectRequest.java
com.android.volley.toolbox.JsonRequest.java
com.android.volley.toolbox.NetworkImageView.java
com.android.volley.toolbox.NoCache.java
com.android.volley.toolbox.PoolingByteArrayOutputStream.java
com.android.volley.toolbox.RequestFuture.java
com.android.volley.toolbox.StringRequest.java
com.android.volley.toolbox.Volley.java
edu.unlv.sudo.checkers.CheckersApplication.java
edu.unlv.sudo.checkers.CheckersBoard.java
edu.unlv.sudo.checkers.model.Board.java
edu.unlv.sudo.checkers.model.Game.java
edu.unlv.sudo.checkers.model.Location.java
edu.unlv.sudo.checkers.model.Piece.java
edu.unlv.sudo.checkers.model.Rules.java
edu.unlv.sudo.checkers.model.Team.java
edu.unlv.sudo.checkers.model.exception.InvalidBoardException.java
edu.unlv.sudo.checkers.model.exception.InvalidMoveException.java
edu.unlv.sudo.checkers.model.exception.OutOfTurnException.java
edu.unlv.sudo.checkers.service.GameService.java
edu.unlv.sudo.checkers.service.impl.GameServiceImpl.java
edu.unlv.sudo.checkers.util.VolleySingleton.java
edu.unlv.sudo.checkers.views.BoardView.java