changeset 66:2dd809be0535

Dead-code benchmark.
author shade
date Fri, 31 May 2013 17:46:19 +0400
parents 36085173acd8
children 08762bbbb164
files jmh-core-benchmarks/src/main/java/org/openjdk/jmh/benchmarks/DeadCodeBench.java
diffstat 1 files changed, 60 insertions(+), 0 deletions(-) [+]
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jmh-core-benchmarks/src/main/java/org/openjdk/jmh/benchmarks/DeadCodeBench.java	Fri May 31 17:46:19 2013 +0400
@@ -0,0 +1,60 @@
+/**
+ * Copyright (c) 2005, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+package org.openjdk.jmh.benchmarks;
+
+import org.openjdk.jmh.annotations.BenchmarkType;
+import org.openjdk.jmh.annotations.GenerateMicroBenchmark;
+import org.openjdk.jmh.annotations.Level;
+import org.openjdk.jmh.annotations.OutputTimeUnit;
+import org.openjdk.jmh.annotations.Scope;
+import org.openjdk.jmh.annotations.Setup;
+import org.openjdk.jmh.annotations.State;
+import org.openjdk.jmh.logic.BlackHole;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.concurrent.TimeUnit;
+
+@OutputTimeUnit(TimeUnit.NANOSECONDS)
+@State(Scope.Thread)
+public class DeadCodeBench {
+
+    public int i;
+
+    @GenerateMicroBenchmark(BenchmarkType.AverageTimePerOp)
+    public void base() {
+        //
+    }
+
+    @GenerateMicroBenchmark(BenchmarkType.AverageTimePerOp)
+    public int constant() {
+        return 42;
+    }
+
+    @GenerateMicroBenchmark(BenchmarkType.AverageTimePerOp)
+    public int payload() {
+        return (int) Math.pow(i, 42);
+    }
+}