/* This file is part of VoltDB.
* Copyright (C) 2008-2014 VoltDB Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
package org.voltcore.utils;
import java.util.Random;
import junit.framework.TestCase;
import org.apache.hadoop_voltpatches.util.PureJavaCrc32C;
import org.junit.Test;
import org.voltcore.utils.DBBPool.BBContainer;
import org.voltdb.EELibraryLoader;
public class TestDBBPool extends TestCase {
/*
* Allocate 4 gigs of memory, should not OOM
*/
@Test
public void testBasicBehavior() {
for (int ii = 0; ii < (2097152 * 2); ii++) {
DBBPool.allocateDirect(1024).discard();
}
}
@Test
public void testChecksum() {
EELibraryLoader.loadExecutionEngineLibrary(true);
final long seed = System.currentTimeMillis();
Random r = new Random(seed);
System.out.println("Seed is " + seed);
for (int ii = 0; ii < 10000; ii++) {
int nextLength = r.nextInt(4096);
byte bytes[] = new byte[nextLength];
r.nextBytes(bytes);
PureJavaCrc32C checksum = new PureJavaCrc32C();
checksum.update(bytes);
int javaSum = (int)checksum.getValue();
BBContainer cont = DBBPool.allocateDirect(nextLength);
cont.b().put(bytes);
int cSum = DBBPool.getCRC32C(cont.address(), 0, nextLength);
cont.discard();
assertEquals(javaSum, cSum);
}
}
}