package org.apache.directmemory.memory;
   
   /*
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you 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.
   */
  
  import com.carrotsearch.junitbenchmarks.AbstractBenchmark;
  import com.carrotsearch.junitbenchmarks.BenchmarkOptions;
  import com.carrotsearch.junitbenchmarks.annotation.AxisRange;
  import com.carrotsearch.junitbenchmarks.annotation.BenchmarkHistoryChart;
  import com.carrotsearch.junitbenchmarks.annotation.BenchmarkMethodChart;
  import com.carrotsearch.junitbenchmarks.annotation.LabelType;
  import com.google.common.collect.MapMaker;
  import org.apache.directmemory.measures.Ram;
  import org.apache.directmemory.memory.Pointer;
  import org.junit.After;
  import org.junit.Before;
  import org.junit.Ignore;
  import org.junit.Test;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import java.io.IOException;
  import java.util.Random;
  import java.util.concurrent.ConcurrentMap;
  
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertNotNull;
  
  @AxisRange( min = 0, max = 1 )
  @BenchmarkMethodChart( )
  @BenchmarkOptions( benchmarkRounds = 1, warmupRounds = 0 )
  @BenchmarkHistoryChart( labelWith = LabelType.CUSTOM_KEY, maxRuns = 5 )
  @Ignore
  public class MallocTest
      extends AbstractBenchmark
  {
  
      Random rnd = new Random();
  
      private static Logger logger = LoggerFactory.getLogger( MallocTest.class );
  
      @After
      public void dump()
          throws IOException
      {
          logger.info( "off-heap allocated: " + Ram.inMb( mem.capacity() ) );
          logger.info( "off-heap used:      " + Ram.inMb( mem.used() ) );
          logger.info( "heap - max: " + Ram.inMb( Runtime.getRuntime().maxMemory() ) );
          logger.info( "heap - allocated: " + Ram.inMb( Runtime.getRuntime().totalMemory() ) );
          logger.info( "heap - free : " + Ram.inMb( Runtime.getRuntime().freeMemory() ) );
          logger.info( "************************************************" );
  
          if ( mem != null )
          {
              mem.close();
          }
      }
  
      MemoryManagerService<Object> mem;
  
      @Before
      public void initMMS()
      {
          mem = new MemoryManagerServiceImpl<Object>();
          mem.init( 1, 512 * 1024 * 1024 );
      }
  
      @Test
      public void oneMillionEntries()
      {
          assertNotNull( mem );
          int howMany = 1000000;
          int size = (int) mem.capacity() / ( howMany );
          size -= size / 100 * 1;
          logger.info( "payload size=" + size );
          logger.info( "entries=" + howMany );
  
          logger.info( "starting..." );
  
          long start = System.currentTimeMillis();
  
          byte[] payload = new byte[size];
          for ( int i = 0; i < howMany; i++ )
         {
             mem.store( payload );
         }
 
         logger.info( "...done in " + ( System.currentTimeMillis() - start ) + " msecs." );
     }
 
     @Test
     public void twoMillionEntries()
     {
 
         assertNotNull( mem );
         int howMany = 2000000;
         int size = (int) mem.capacity() / ( howMany );
         size -= size / 100 * 1;
         logger.info( "payload size=" + size );
         logger.info( "entries=" + howMany );
 
         logger.info( "starting..." );
         long start = System.currentTimeMillis();
 
         byte[] payload = new byte[size];
         for ( int i = 0; i < howMany; i++ )
         {
             mem.store( payload );
         }
 
         logger.info( "...done in " + ( System.currentTimeMillis() - start ) + " msecs." );
     }
 
     @Test
     public void fiveMillionEntries()
     {
 
         assertNotNull( mem );
         int howMany = 5000000;
         int size = (int) mem.capacity() / ( howMany );
         size -= size / 100 * 1;
         logger.info( "payload size=" + size );
         logger.info( "entries=" + howMany );
 
         logger.info( "starting..." );
         long start = System.currentTimeMillis();
 
         byte[] payload = new byte[size];
         for ( int i = 0; i < howMany; i++ )
         {
             mem.store( payload );
         }
 
         logger.info( "...done in " + ( System.currentTimeMillis() - start ) + " msecs." );
     }
 
     @Test
     public void withMap()
     {
 
         ConcurrentMap<Long, Pointer<Object>> map =
             new MapMaker().concurrencyLevel( 4 ).initialCapacity( 500000 ).makeMap();
 
         String str = "This is the string to store into the off-heap memory";
 
         int size = str.length();
         int howMany = 1000000;
         byte[] payload = str.getBytes();
 
         logger.info( "adding " + howMany + " strings of " + size + " bytes..." );
         for ( long i = 0; i < howMany; i++ )
         {
             Pointer<Object> p = mem.store( payload );
             map.put( i, p );
         }
         logger.info( "...done" );
 
     }
 
     @Before
     public void before()
     {
         mem.clear();
     }
 
     @Test
     public void oneMillionEntriesWithRead()
     {
 
         logger.info( "total capacity=" + Ram.inMb( mem.capacity() ) );
         assertNotNull( mem );
         int size = 400;
         int howMany = 1000000;
         logger.info( "payload size=" + Ram.inKb( size ) );
         logger.info( "entries=" + howMany );
         String test = "this is a nicely crafted test";
         byte[] payload = test.getBytes();
         for ( int i = 0; i < howMany; i++ )
         {
             Pointer<Object> p = mem.store( payload );
             byte[] check = mem.retrieve( p );
             assertNotNull( check );
             assertEquals( test, new String( check ) );
         }
 
         logger.info( "total used=" + Ram.inMb( mem.used() ) );
     }
 }