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<pre><span class="sourceLineNo">001</span>/**<a name="line.1"></a>
<span class="sourceLineNo">002</span> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.2"></a>
<span class="sourceLineNo">003</span> * or more contributor license agreements. See the NOTICE file<a name="line.3"></a>
<span class="sourceLineNo">004</span> * distributed with this work for additional information<a name="line.4"></a>
<span class="sourceLineNo">005</span> * regarding copyright ownership. The ASF licenses this file<a name="line.5"></a>
<span class="sourceLineNo">006</span> * to you under the Apache License, Version 2.0 (the<a name="line.6"></a>
<span class="sourceLineNo">007</span> * "License"); you may not use this file except in compliance<a name="line.7"></a>
<span class="sourceLineNo">008</span> * with the License. You may obtain a copy of the License at<a name="line.8"></a>
<span class="sourceLineNo">009</span> *<a name="line.9"></a>
<span class="sourceLineNo">010</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a>
<span class="sourceLineNo">011</span> *<a name="line.11"></a>
<span class="sourceLineNo">012</span> * Unless required by applicable law or agreed to in writing, software<a name="line.12"></a>
<span class="sourceLineNo">013</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.13"></a>
<span class="sourceLineNo">014</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.14"></a>
<span class="sourceLineNo">015</span> * See the License for the specific language governing permissions and<a name="line.15"></a>
<span class="sourceLineNo">016</span> * limitations under the License.<a name="line.16"></a>
<span class="sourceLineNo">017</span> */<a name="line.17"></a>
<span class="sourceLineNo">018</span>package org.apache.hadoop.hbase.util;<a name="line.18"></a>
<span class="sourceLineNo">019</span><a name="line.19"></a>
<span class="sourceLineNo">020</span>import static org.junit.Assert.assertEquals;<a name="line.20"></a>
<span class="sourceLineNo">021</span>import static org.junit.Assert.assertFalse;<a name="line.21"></a>
<span class="sourceLineNo">022</span>import static org.junit.Assert.assertTrue;<a name="line.22"></a>
<span class="sourceLineNo">023</span>import static org.junit.Assert.fail;<a name="line.23"></a>
<span class="sourceLineNo">024</span><a name="line.24"></a>
<span class="sourceLineNo">025</span>import java.io.IOException;<a name="line.25"></a>
<span class="sourceLineNo">026</span>import java.nio.ByteBuffer;<a name="line.26"></a>
<span class="sourceLineNo">027</span>import java.util.Random;<a name="line.27"></a>
<span class="sourceLineNo">028</span><a name="line.28"></a>
<span class="sourceLineNo">029</span>import org.apache.hadoop.hbase.HBaseClassTestRule;<a name="line.29"></a>
<span class="sourceLineNo">030</span>import org.apache.hadoop.hbase.nio.ByteBuff;<a name="line.30"></a>
<span class="sourceLineNo">031</span>import org.apache.hadoop.hbase.nio.MultiByteBuff;<a name="line.31"></a>
<span class="sourceLineNo">032</span>import org.apache.hadoop.hbase.nio.SingleByteBuff;<a name="line.32"></a>
<span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.testclassification.MiscTests;<a name="line.33"></a>
<span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.testclassification.SmallTests;<a name="line.34"></a>
<span class="sourceLineNo">035</span>import org.junit.ClassRule;<a name="line.35"></a>
<span class="sourceLineNo">036</span>import org.junit.Test;<a name="line.36"></a>
<span class="sourceLineNo">037</span>import org.junit.experimental.categories.Category;<a name="line.37"></a>
<span class="sourceLineNo">038</span><a name="line.38"></a>
<span class="sourceLineNo">039</span>@Category({ MiscTests.class, SmallTests.class })<a name="line.39"></a>
<span class="sourceLineNo">040</span>public class TestByteBufferArray {<a name="line.40"></a>
<span class="sourceLineNo">041</span><a name="line.41"></a>
<span class="sourceLineNo">042</span> private static final Random RANDOM = new Random(System.currentTimeMillis());<a name="line.42"></a>
<span class="sourceLineNo">043</span><a name="line.43"></a>
<span class="sourceLineNo">044</span> @ClassRule<a name="line.44"></a>
<span class="sourceLineNo">045</span> public static final HBaseClassTestRule CLASS_RULE =<a name="line.45"></a>
<span class="sourceLineNo">046</span> HBaseClassTestRule.forClass(TestByteBufferArray.class);<a name="line.46"></a>
<span class="sourceLineNo">047</span><a name="line.47"></a>
<span class="sourceLineNo">048</span> private static final ByteBufferAllocator ALLOC = (size) -&gt; ByteBuffer.allocateDirect((int) size);<a name="line.48"></a>
<span class="sourceLineNo">049</span><a name="line.49"></a>
<span class="sourceLineNo">050</span> @Test<a name="line.50"></a>
<span class="sourceLineNo">051</span> public void testAsSubBufferWhenEndOffsetLandInLastBuffer() throws Exception {<a name="line.51"></a>
<span class="sourceLineNo">052</span> int capacity = 4 * 1024 * 1024;<a name="line.52"></a>
<span class="sourceLineNo">053</span> ByteBufferArray array = new ByteBufferArray(capacity, ALLOC);<a name="line.53"></a>
<span class="sourceLineNo">054</span> ByteBuff subBuf = ByteBuff.wrap(array.asSubByteBuffers(0, capacity));<a name="line.54"></a>
<span class="sourceLineNo">055</span> subBuf.position(capacity - 1);// Position to the last byte<a name="line.55"></a>
<span class="sourceLineNo">056</span> assertTrue(subBuf.hasRemaining());<a name="line.56"></a>
<span class="sourceLineNo">057</span> // Read last byte<a name="line.57"></a>
<span class="sourceLineNo">058</span> subBuf.get();<a name="line.58"></a>
<span class="sourceLineNo">059</span> assertFalse(subBuf.hasRemaining());<a name="line.59"></a>
<span class="sourceLineNo">060</span> }<a name="line.60"></a>
<span class="sourceLineNo">061</span><a name="line.61"></a>
<span class="sourceLineNo">062</span> @Test<a name="line.62"></a>
<span class="sourceLineNo">063</span> public void testByteBufferCreation() throws Exception {<a name="line.63"></a>
<span class="sourceLineNo">064</span> int capacity = 470 * 1021 * 1023;<a name="line.64"></a>
<span class="sourceLineNo">065</span> ByteBufferArray array = new ByteBufferArray(capacity, ALLOC);<a name="line.65"></a>
<span class="sourceLineNo">066</span> assertEquals(118, array.buffers.length);<a name="line.66"></a>
<span class="sourceLineNo">067</span> for (int i = 0; i &lt; array.buffers.length; i++) {<a name="line.67"></a>
<span class="sourceLineNo">068</span> assertEquals(ByteBufferArray.DEFAULT_BUFFER_SIZE, array.buffers[i].capacity());<a name="line.68"></a>
<span class="sourceLineNo">069</span> }<a name="line.69"></a>
<span class="sourceLineNo">070</span> }<a name="line.70"></a>
<span class="sourceLineNo">071</span><a name="line.71"></a>
<span class="sourceLineNo">072</span> @Test<a name="line.72"></a>
<span class="sourceLineNo">073</span> public void testByteBufferCreation1() throws Exception {<a name="line.73"></a>
<span class="sourceLineNo">074</span> long cap = 7 * 1024L * 1024L;<a name="line.74"></a>
<span class="sourceLineNo">075</span> int bufferSize = ByteBufferArray.getBufferSize(cap), bufferCount = 25;<a name="line.75"></a>
<span class="sourceLineNo">076</span> ByteBufferArray array = new ByteBufferArray(bufferSize, bufferCount, 16, cap, ALLOC);<a name="line.76"></a>
<span class="sourceLineNo">077</span> for (int i = 0; i &lt; array.buffers.length; i++) {<a name="line.77"></a>
<span class="sourceLineNo">078</span> assertEquals(458752, array.buffers[i].capacity());<a name="line.78"></a>
<span class="sourceLineNo">079</span> }<a name="line.79"></a>
<span class="sourceLineNo">080</span> }<a name="line.80"></a>
<span class="sourceLineNo">081</span><a name="line.81"></a>
<span class="sourceLineNo">082</span> private static void fill(ByteBuff buf, byte val) {<a name="line.82"></a>
<span class="sourceLineNo">083</span> for (int i = buf.position(); i &lt; buf.limit(); i++) {<a name="line.83"></a>
<span class="sourceLineNo">084</span> buf.put(i, val);<a name="line.84"></a>
<span class="sourceLineNo">085</span> }<a name="line.85"></a>
<span class="sourceLineNo">086</span> }<a name="line.86"></a>
<span class="sourceLineNo">087</span><a name="line.87"></a>
<span class="sourceLineNo">088</span> private ByteBuff createByteBuff(int len) {<a name="line.88"></a>
<span class="sourceLineNo">089</span> assert len &gt;= 0;<a name="line.89"></a>
<span class="sourceLineNo">090</span> int pos = len == 0 ? 0 : RANDOM.nextInt(len);<a name="line.90"></a>
<span class="sourceLineNo">091</span> ByteBuff b = ByteBuff.wrap(ByteBuffer.allocate(2 * len));<a name="line.91"></a>
<span class="sourceLineNo">092</span> b.position(pos).limit(pos + len);<a name="line.92"></a>
<span class="sourceLineNo">093</span> return b;<a name="line.93"></a>
<span class="sourceLineNo">094</span> }<a name="line.94"></a>
<span class="sourceLineNo">095</span><a name="line.95"></a>
<span class="sourceLineNo">096</span> private interface Call {<a name="line.96"></a>
<span class="sourceLineNo">097</span> void run() throws IOException;<a name="line.97"></a>
<span class="sourceLineNo">098</span> }<a name="line.98"></a>
<span class="sourceLineNo">099</span><a name="line.99"></a>
<span class="sourceLineNo">100</span> @SuppressWarnings("TryFailThrowable")<a name="line.100"></a>
<span class="sourceLineNo">101</span> private void expectedAssert(Call r) throws IOException {<a name="line.101"></a>
<span class="sourceLineNo">102</span> try {<a name="line.102"></a>
<span class="sourceLineNo">103</span> r.run();<a name="line.103"></a>
<span class="sourceLineNo">104</span> fail();<a name="line.104"></a>
<span class="sourceLineNo">105</span> } catch (AssertionError e) {<a name="line.105"></a>
<span class="sourceLineNo">106</span> // Ignore<a name="line.106"></a>
<span class="sourceLineNo">107</span> }<a name="line.107"></a>
<span class="sourceLineNo">108</span> }<a name="line.108"></a>
<span class="sourceLineNo">109</span><a name="line.109"></a>
<span class="sourceLineNo">110</span><a name="line.110"></a>
<span class="sourceLineNo">111</span> @Test<a name="line.111"></a>
<span class="sourceLineNo">112</span> public void testArrayIO() throws IOException {<a name="line.112"></a>
<span class="sourceLineNo">113</span> int cap = 9 * 1024 * 1024, bufferSize = ByteBufferArray.getBufferSize(cap);<a name="line.113"></a>
<span class="sourceLineNo">114</span> ByteBufferArray array = new ByteBufferArray(cap, ALLOC);<a name="line.114"></a>
<span class="sourceLineNo">115</span> testReadAndWrite(array, 0, 512, (byte) 2);<a name="line.115"></a>
<span class="sourceLineNo">116</span> testReadAndWrite(array, cap - 512, 512, (byte) 3);<a name="line.116"></a>
<span class="sourceLineNo">117</span> testReadAndWrite(array, 4 * 1024 * 1024, 5 * 1024 * 1024, (byte) 4);<a name="line.117"></a>
<span class="sourceLineNo">118</span> testReadAndWrite(array, 256, 256, (byte) 5);<a name="line.118"></a>
<span class="sourceLineNo">119</span> testReadAndWrite(array, 257, 513, (byte) 6);<a name="line.119"></a>
<span class="sourceLineNo">120</span> testReadAndWrite(array, 0, cap, (byte) 7);<a name="line.120"></a>
<span class="sourceLineNo">121</span> testReadAndWrite(array, cap, 0, (byte) 8);<a name="line.121"></a>
<span class="sourceLineNo">122</span> testReadAndWrite(array, cap - 1, 1, (byte) 9);<a name="line.122"></a>
<span class="sourceLineNo">123</span> testReadAndWrite(array, cap - 2, 2, (byte) 10);<a name="line.123"></a>
<span class="sourceLineNo">124</span><a name="line.124"></a>
<span class="sourceLineNo">125</span> expectedAssert(() -&gt; testReadAndWrite(array, cap - 2, 3, (byte) 11));<a name="line.125"></a>
<span class="sourceLineNo">126</span> expectedAssert(() -&gt; testReadAndWrite(array, cap + 1, 0, (byte) 12));<a name="line.126"></a>
<span class="sourceLineNo">127</span> expectedAssert(() -&gt; testReadAndWrite(array, 0, cap + 1, (byte) 12));<a name="line.127"></a>
<span class="sourceLineNo">128</span> expectedAssert(() -&gt; testReadAndWrite(array, -1, 0, (byte) 13));<a name="line.128"></a>
<span class="sourceLineNo">129</span> expectedAssert(() -&gt; testReadAndWrite(array, 0, -23, (byte) 14));<a name="line.129"></a>
<span class="sourceLineNo">130</span> expectedAssert(() -&gt; testReadAndWrite(array, 0, 0, (byte) 15));<a name="line.130"></a>
<span class="sourceLineNo">131</span> expectedAssert(() -&gt; testReadAndWrite(array, 4096, cap - 4096 + 1, (byte) 16));<a name="line.131"></a>
<span class="sourceLineNo">132</span><a name="line.132"></a>
<span class="sourceLineNo">133</span> testAsSubByteBuff(array, 0, cap, true);<a name="line.133"></a>
<span class="sourceLineNo">134</span> testAsSubByteBuff(array, 0, 0, false);<a name="line.134"></a>
<span class="sourceLineNo">135</span> testAsSubByteBuff(array, 0, 1, false);<a name="line.135"></a>
<span class="sourceLineNo">136</span> testAsSubByteBuff(array, 0, bufferSize - 1, false);<a name="line.136"></a>
<span class="sourceLineNo">137</span> testAsSubByteBuff(array, 0, bufferSize, false);<a name="line.137"></a>
<span class="sourceLineNo">138</span> testAsSubByteBuff(array, 0, bufferSize + 1, true);<a name="line.138"></a>
<span class="sourceLineNo">139</span> testAsSubByteBuff(array, 0, 2 * bufferSize, true);<a name="line.139"></a>
<span class="sourceLineNo">140</span> testAsSubByteBuff(array, 0, 5 * bufferSize, true);<a name="line.140"></a>
<span class="sourceLineNo">141</span> testAsSubByteBuff(array, cap - bufferSize - 1, bufferSize, true);<a name="line.141"></a>
<span class="sourceLineNo">142</span> testAsSubByteBuff(array, cap - bufferSize, bufferSize, false);<a name="line.142"></a>
<span class="sourceLineNo">143</span> testAsSubByteBuff(array, cap - bufferSize, 0, false);<a name="line.143"></a>
<span class="sourceLineNo">144</span> testAsSubByteBuff(array, cap - bufferSize, 1, false);<a name="line.144"></a>
<span class="sourceLineNo">145</span> testAsSubByteBuff(array, cap - bufferSize, bufferSize - 1, false);<a name="line.145"></a>
<span class="sourceLineNo">146</span> testAsSubByteBuff(array, cap - 2 * bufferSize, 2 * bufferSize, true);<a name="line.146"></a>
<span class="sourceLineNo">147</span> testAsSubByteBuff(array, cap - 2 * bufferSize, bufferSize + 1, true);<a name="line.147"></a>
<span class="sourceLineNo">148</span> testAsSubByteBuff(array, cap - 2 * bufferSize, bufferSize - 1, false);<a name="line.148"></a>
<span class="sourceLineNo">149</span> testAsSubByteBuff(array, cap - 2 * bufferSize, 0, false);<a name="line.149"></a>
<span class="sourceLineNo">150</span><a name="line.150"></a>
<span class="sourceLineNo">151</span> expectedAssert(() -&gt; testAsSubByteBuff(array, 0, cap + 1, false));<a name="line.151"></a>
<span class="sourceLineNo">152</span> expectedAssert(() -&gt; testAsSubByteBuff(array, 0, -1, false));<a name="line.152"></a>
<span class="sourceLineNo">153</span> expectedAssert(() -&gt; testAsSubByteBuff(array, -1, -1, false));<a name="line.153"></a>
<span class="sourceLineNo">154</span> expectedAssert(() -&gt; testAsSubByteBuff(array, cap - bufferSize, bufferSize + 1, false));<a name="line.154"></a>
<span class="sourceLineNo">155</span> expectedAssert(() -&gt; testAsSubByteBuff(array, 2 * bufferSize, cap - 2 * bufferSize + 1, false));<a name="line.155"></a>
<span class="sourceLineNo">156</span> }<a name="line.156"></a>
<span class="sourceLineNo">157</span><a name="line.157"></a>
<span class="sourceLineNo">158</span> private void testReadAndWrite(ByteBufferArray array, int off, int dataSize, byte val) {<a name="line.158"></a>
<span class="sourceLineNo">159</span> ByteBuff src = createByteBuff(dataSize);<a name="line.159"></a>
<span class="sourceLineNo">160</span> int pos = src.position(), lim = src.limit();<a name="line.160"></a>
<span class="sourceLineNo">161</span> fill(src, val);<a name="line.161"></a>
<span class="sourceLineNo">162</span> assertEquals(src.remaining(), dataSize);<a name="line.162"></a>
<span class="sourceLineNo">163</span> try {<a name="line.163"></a>
<span class="sourceLineNo">164</span> assertEquals(dataSize, array.write(off, src));<a name="line.164"></a>
<span class="sourceLineNo">165</span> assertEquals(0, src.remaining());<a name="line.165"></a>
<span class="sourceLineNo">166</span> } finally {<a name="line.166"></a>
<span class="sourceLineNo">167</span> src.position(pos).limit(lim);<a name="line.167"></a>
<span class="sourceLineNo">168</span> }<a name="line.168"></a>
<span class="sourceLineNo">169</span><a name="line.169"></a>
<span class="sourceLineNo">170</span> ByteBuff dst = createByteBuff(dataSize);<a name="line.170"></a>
<span class="sourceLineNo">171</span> pos = dst.position();<a name="line.171"></a>
<span class="sourceLineNo">172</span> lim = dst.limit();<a name="line.172"></a>
<span class="sourceLineNo">173</span> try {<a name="line.173"></a>
<span class="sourceLineNo">174</span> assertEquals(dataSize, array.read(off, dst));<a name="line.174"></a>
<span class="sourceLineNo">175</span> assertEquals(0, dst.remaining());<a name="line.175"></a>
<span class="sourceLineNo">176</span> } finally {<a name="line.176"></a>
<span class="sourceLineNo">177</span> dst.position(pos).limit(lim);<a name="line.177"></a>
<span class="sourceLineNo">178</span> }<a name="line.178"></a>
<span class="sourceLineNo">179</span> assertByteBuffEquals(src, dst);<a name="line.179"></a>
<span class="sourceLineNo">180</span> }<a name="line.180"></a>
<span class="sourceLineNo">181</span><a name="line.181"></a>
<span class="sourceLineNo">182</span> private void testAsSubByteBuff(ByteBufferArray array, int off, int len, boolean isMulti) {<a name="line.182"></a>
<span class="sourceLineNo">183</span> ByteBuff ret = ByteBuff.wrap(array.asSubByteBuffers(off, len));<a name="line.183"></a>
<span class="sourceLineNo">184</span> if (isMulti) {<a name="line.184"></a>
<span class="sourceLineNo">185</span> assertTrue(ret instanceof MultiByteBuff);<a name="line.185"></a>
<span class="sourceLineNo">186</span> } else {<a name="line.186"></a>
<span class="sourceLineNo">187</span> assertTrue(ret instanceof SingleByteBuff);<a name="line.187"></a>
<span class="sourceLineNo">188</span> }<a name="line.188"></a>
<span class="sourceLineNo">189</span> assertTrue(!ret.hasArray());<a name="line.189"></a>
<span class="sourceLineNo">190</span> assertEquals(len, ret.remaining());<a name="line.190"></a>
<span class="sourceLineNo">191</span><a name="line.191"></a>
<span class="sourceLineNo">192</span> ByteBuff tmp = createByteBuff(len);<a name="line.192"></a>
<span class="sourceLineNo">193</span> int pos = tmp.position(), lim = tmp.limit();<a name="line.193"></a>
<span class="sourceLineNo">194</span> try {<a name="line.194"></a>
<span class="sourceLineNo">195</span> assertEquals(len, array.read(off, tmp));<a name="line.195"></a>
<span class="sourceLineNo">196</span> assertEquals(0, tmp.remaining());<a name="line.196"></a>
<span class="sourceLineNo">197</span> } finally {<a name="line.197"></a>
<span class="sourceLineNo">198</span> tmp.position(pos).limit(lim);<a name="line.198"></a>
<span class="sourceLineNo">199</span> }<a name="line.199"></a>
<span class="sourceLineNo">200</span><a name="line.200"></a>
<span class="sourceLineNo">201</span> assertByteBuffEquals(ret, tmp);<a name="line.201"></a>
<span class="sourceLineNo">202</span> }<a name="line.202"></a>
<span class="sourceLineNo">203</span><a name="line.203"></a>
<span class="sourceLineNo">204</span> private void assertByteBuffEquals(ByteBuff a, ByteBuff b) {<a name="line.204"></a>
<span class="sourceLineNo">205</span> assertEquals(a.remaining(), b.remaining());<a name="line.205"></a>
<span class="sourceLineNo">206</span> for (int i = a.position(), j = b.position(); i &lt; a.limit(); i++, j++) {<a name="line.206"></a>
<span class="sourceLineNo">207</span> assertEquals(a.get(i), b.get(j));<a name="line.207"></a>
<span class="sourceLineNo">208</span> }<a name="line.208"></a>
<span class="sourceLineNo">209</span> }<a name="line.209"></a>
<span class="sourceLineNo">210</span>}<a name="line.210"></a>
</pre>
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