test/micro/classes/org/openjdk/bench/java/lang/reflect/Clazz.java
branchJEP-230-microbenchmarks-branch
changeset 56930 079075866d11
parent 56929 b8756e94db7a
child 56992 8a8b778c8163
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/micro/classes/org/openjdk/bench/java/lang/reflect/Clazz.java	Fri Oct 05 18:24:15 2018 +0200
@@ -0,0 +1,84 @@
+/*
+ * Copyright (c) 2014 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.bench.java.lang.reflect;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Method;
+import java.util.concurrent.TimeUnit;
+
+import org.openjdk.jmh.annotations.Benchmark;
+import org.openjdk.jmh.annotations.BenchmarkMode;
+import org.openjdk.jmh.annotations.Mode;
+import org.openjdk.jmh.annotations.OutputTimeUnit;
+
+@BenchmarkMode(Mode.AverageTime)
+@OutputTimeUnit(TimeUnit.NANOSECONDS)
+public class Clazz {
+
+    /**
+     * Get constructor for this class through reflection
+     *
+     * @return
+     * @throws NoSuchMethodException
+     */
+    @Benchmark
+    public Constructor getConstructor() throws NoSuchMethodException {
+        return Clazz.class.getConstructor();
+    }
+
+    /**
+     * Get constructor for the String class through reflection, forcing full
+     * security check
+     *
+     * @return
+     * @throws NoSuchMethodException
+     */
+    @Benchmark
+    public Constructor getConstructorDifferentClassLoader() throws NoSuchMethodException {
+        return String.class.getConstructor();
+    }
+
+    /**
+     * Get the toString method through reflection on Clazz
+     *
+     * @return
+     */
+    @Benchmark
+    public Method getMethod() throws NoSuchMethodException {
+        return Clazz.class.getMethod("toString");
+    }
+
+    /**
+     * Get the toString method through reflection on String, forcing full
+     * security check
+     *
+     * @return
+     * @throws NoSuchMethodException
+     */
+    @Benchmark
+    public Method getMethodDifferentClassLoader() throws NoSuchMethodException {
+        return String.class.getMethod("toString");
+    }
+}