feat: JMHExample11

multithreading1/src/main/java/cn/bunny/jmh/JMHExample11.java

@@ -0,0 +1,51 @@
+package cn.bunny.jmh;
+
+import org.openjdk.jmh.annotations.*;
+import org.openjdk.jmh.runner.Runner;
+import org.openjdk.jmh.runner.RunnerException;
+import org.openjdk.jmh.runner.options.Options;
+import org.openjdk.jmh.runner.options.OptionsBuilder;
+
+import java.util.concurrent.TimeUnit;
+
+@BenchmarkMode(Mode.AverageTime)
+@Fork(1)
+@Warmup(iterations = 5)
+@Measurement(iterations = 10)
+@OutputTimeUnit(TimeUnit.MICROSECONDS)
+@State(Scope.Thread)
+public class JMHExample11 {
+
+    private final double x1 = 124.56;
+    private final double x2 = 342.456;
+
+    private final double y1 = 124.56;
+    private final double y2 = 342.456;
+
+    public static void main(String[] args) throws RunnerException {
+        final Options options = new OptionsBuilder()
+                .include(JMHExample11.class.getSimpleName())
+                .build();
+        new Runner(options).run();
+    }
+
+    @Benchmark
+    public double returnDirect() {
+        return 42_620.703936d;
+    }
+
+    @Benchmark
+    public double returnDirect2() {
+        return x1 * x2;
+    }
+
+    @Benchmark
+    public double returnCac_2() {
+        return Math.log(y1) * Math.log(y2);
+    }
+
+    @Benchmark
+    public double returnCac_3() {
+        return Math.log(x1) * Math.log(x2);
+    }
+}