37 lines
1.1 KiB
Java
37 lines
1.1 KiB
Java
|
package com.baeldung.bitset;
|
||
|
|
|
||
|
|
import org.openjdk.jol.info.ClassLayout;
|
||
|
|
import org.openjdk.jol.info.GraphLayout;
|
||
|
|
|
||
|
|
import java.io.BufferedWriter;
|
||
|
|
import java.io.IOException;
|
||
|
|
import java.nio.file.Files;
|
||
|
|
import java.nio.file.Path;
|
||
|
|
import java.nio.file.Paths;
|
||
|
|
import java.nio.file.StandardOpenOption;
|
||
|
|
import java.util.BitSet;
|
||
|
|
|
||
|
|
public class Plotter {
|
||
|
|
|
||
|
|
public static void main(String[] args) throws IOException {
|
||
|
|
Path path = Paths.get("footprint.csv");
|
||
|
|
try (BufferedWriter stream = Files.newBufferedWriter(path, StandardOpenOption.CREATE)) {
|
||
|
|
stream.write("bits,bool,bitset\n");
|
||
|
|
|
||
|
|
for (int i = 0; i <= 10_000_000; i += 500) {
|
||
|
|
System.out.println("Number of bits => " + i);
|
||
|
|
|
||
|
|
boolean[] ba = new boolean[i];
|
||
|
|
BitSet bitSet = new BitSet(i);
|
||
|
|
|
||
|
|
long baSize = ClassLayout.parseInstance(ba).instanceSize();
|
||
|
|
long bitSetSize = GraphLayout.parseInstance(bitSet).totalSize();
|
||
|
|
|
||
|
|
stream.write((i + "," + baSize + "," + bitSetSize + "\n"));
|
||
|
|
|
||
|
|
if (i % 10_000 == 0) stream.flush();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|