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30 day Evaluation Version distributed via the Maven Jar Repository. Clover is not free. You have 30 days to evaluate it. Please visit http://www.thecortex.net/clover to obtain a licensed version of Clover | |||||||||||||||||||
Source file | Conditionals | Statements | Methods | TOTAL | |||||||||||||||
BatchedWrite.java | 45% | 63.9% | 80% | 60.6% |
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/**
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*
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* Copyright 2004 Hiram Chirino
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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**/
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package org.activeio.journal.active;
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import org.activeio.Packet;
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import EDU.oswego.cs.dl.util.concurrent.Latch;
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/**
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* This contains all the data needed to write and force a list of records to a
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* LogFile. The more records that can be cramed into a single BatchedWrite, the
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* higher throughput that can be achived by a write and force operation.
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*
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* @version $Revision: 1.1 $
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*/
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final public class BatchedWrite { |
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private final Packet packet;
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public Throwable error;
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private Location mark;
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private boolean appendDisabled = false; |
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private boolean appendInProgress = false; |
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private Latch writeDoneLatch;
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/**
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* @param packet
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*/
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public BatchedWrite(Packet packet) {
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this.packet = packet;
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} |
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/**
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* @throws InterruptedException
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*
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*/
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51 | 20 |
synchronized private void disableAppend() throws InterruptedException { |
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appendDisabled = true;
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while (appendInProgress) {
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wait(); |
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} |
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} |
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/**
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* @param packet2
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* @param mark2
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* @return
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*/
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public boolean append(Record record, Location recordMark, boolean force) { |
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synchronized (this) { |
66 | 24 |
if (appendDisabled)
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return false; |
68 | 22 |
appendInProgress = true;
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} |
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if( force && writeDoneLatch==null) |
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writeDoneLatch = new Latch();
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record.read(packet); |
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// if we fit the record in this batch
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if ( !record.hasRemaining() ) {
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if (recordMark != null) |
80 | 0 |
mark = recordMark; |
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} |
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synchronized (this) { |
84 | 22 |
appendInProgress = false;
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this.notify();
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if (appendDisabled)
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return false; |
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else
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return packet.remaining() > 0;
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} |
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} |
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94 | 0 |
public void waitForForce() throws Throwable { |
95 | 0 |
if( writeDoneLatch!=null ) { |
96 | 0 |
writeDoneLatch.acquire(); |
97 | 0 |
synchronized (this) { |
98 | 0 |
if (error != null) |
99 | 0 |
throw error;
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} |
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} |
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} |
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104 | 4 |
public void forced() { |
105 | 4 |
if( writeDoneLatch!=null ) { |
106 | 0 |
writeDoneLatch.release(); |
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} |
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} |
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110 | 0 |
public void writeFailed(Throwable error) { |
111 | 0 |
if( writeDoneLatch!=null ) { |
112 | 0 |
synchronized (this) { |
113 | 0 |
this.error = error;
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} |
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115 | 0 |
writeDoneLatch.release(); |
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} |
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} |
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119 | 24 |
public Packet getPacket() {
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120 | 24 |
return packet;
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} |
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/**
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* @return
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*/
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126 | 20 |
public Location getMark() {
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127 | 20 |
return mark;
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} |
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/**
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* @throws InterruptedException
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*
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*/
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134 | 20 |
public void flip() throws InterruptedException { |
135 | 20 |
disableAppend(); |
136 | 20 |
packet.flip(); |
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} |
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139 | 20 |
public boolean getForce() { |
140 | 20 |
return writeDoneLatch!=null; |
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} |
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} |
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