try {
File fraf = new File( "e:\\fraf.bin" );
File fchan = new File( "e:\\fchan.bin" );
File fmapd = new File( "e:\\fmapd.bin" );
RandomAccessFile raf = new RandomAccessFile( fraf, "rw" );
FileChannel fc = new RandomAccessFile( fchan, "rw" ).getChannel();
MemoryMappedFile mmf = new MemoryMappedFile( fmapd );
mmf.setAccessMode( MemoryMappedFile.MODE_READ_WRITE );
long written = 0;
long traf = 0;
long tchan = 0;
long tmmf = 0;
int loop = 1;
while( written < MAX_SIZE ) {
System.out.print("|"); if (loop % 80 == 0) System.out.println();
refreshBuffers();
long start_pos = new Float(RandomUtils.nextFloat()*(MAX_SIZE-BUFF_SIZE)).longValue();
///////////////////////////////////////////////////////
long start = System.currentTimeMillis();
//raf.seek( start_pos ); raf.write( raw );
traf += System.currentTimeMillis() - start;
///////////////////////////////////////////////////////
start = System.currentTimeMillis();
//fc.write( dbb.buff, start_pos );
tchan += System.currentTimeMillis() - start;
///////////////////////////////////////////////////////
start = System.currentTimeMillis();
mmf.write( dbb, 0, start_pos, dbb.limit(DirectByteBuffer.SS_OTHER) );
tmmf += System.currentTimeMillis() - start;
///////////////////////////////////////////////////////
written += raw.length;
loop++;
}
System.out.println();
System.out.println("RandomAccessFile = " + traf);
System.out.println("FileChannel = " + tchan);
System.out.println("MemoryMappedFile = " + tmmf);
System.out.println("Cache H: " +MemoryMappedFile.cache_hits+ " M: " +MemoryMappedFile.cache_misses);
}
catch (Throwable t) { Debug.printStackTrace( t ); }
