changeset 63:6e8fa6b3a37f

Core benchmarks: black hole test.
author shade
date Fri, 31 May 2013 17:04:07 +0400
parents 14b70ed286a6
children 83e90ece1d41
files jmh-core-benchmarks/src/main/java/org/openjdk/jmh/benchmarks/BlackholeBench.java
diffstat 1 files changed, 171 insertions(+), 0 deletions(-) [+]
line wrap: on
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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/BlackholeBench.java	Fri May 31 17:04:07 2013 +0400
@@ -0,0 +1,171 @@
+/**
+ * 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 BlackholeBench {
+
+    private List<String> strs;
+
+    @Setup(Level.Iteration)
+    public void makeGarbage() {
+        // make some garbage to evict blackhole from the TLAB/eden
+        strs = new ArrayList<String>();
+        for (int i = 0; i < 100000; i++) {
+            strs.add("str" + i);
+        }
+    }
+
+    public byte b;
+    public boolean bool;
+    public char c;
+    public short s;
+    public int i;
+    public long l;
+    public float f;
+    public double d;
+    public Object o;
+    public Object[] os;
+
+    @GenerateMicroBenchmark(BenchmarkType.AverageTimePerOp)
+    public void baseline() {
+        // do nothing
+    }
+
+    @GenerateMicroBenchmark(BenchmarkType.AverageTimePerOp)
+    public byte implicit_testByte() {
+        return b;
+    }
+
+    @GenerateMicroBenchmark(BenchmarkType.AverageTimePerOp)
+    public boolean implicit_testBoolean() {
+        return bool;
+    }
+
+    @GenerateMicroBenchmark(BenchmarkType.AverageTimePerOp)
+    public char implicit_testChar() {
+        return c;
+    }
+
+    @GenerateMicroBenchmark(BenchmarkType.AverageTimePerOp)
+    public short implicit_testShort() {
+        return s;
+    }
+
+    @GenerateMicroBenchmark(BenchmarkType.AverageTimePerOp)
+    public int implicit_testInt() {
+        return i;
+    }
+
+    @GenerateMicroBenchmark(BenchmarkType.AverageTimePerOp)
+    public long implicit_testLong() {
+        return l;
+    }
+
+    @GenerateMicroBenchmark(BenchmarkType.AverageTimePerOp)
+    public float implicit_testFloat() {
+        return f;
+    }
+
+    @GenerateMicroBenchmark(BenchmarkType.AverageTimePerOp)
+    public double implicit_testDouble() {
+        return d;
+    }
+
+    @GenerateMicroBenchmark(BenchmarkType.AverageTimePerOp)
+    public Object implicit_testObject() {
+        return o;
+    }
+
+    @GenerateMicroBenchmark(BenchmarkType.AverageTimePerOp)
+    public Object[] implicit_testArray() {
+        return os;
+    }
+
+    @GenerateMicroBenchmark(BenchmarkType.AverageTimePerOp)
+    public void explicit_testByte(BlackHole bh) {
+        bh.consume(b);
+    }
+
+    @GenerateMicroBenchmark(BenchmarkType.AverageTimePerOp)
+    public void explicit_testBoolean(BlackHole bh) {
+        bh.consume(bool);
+    }
+
+    @GenerateMicroBenchmark(BenchmarkType.AverageTimePerOp)
+    public void explicit_testChar(BlackHole bh) {
+        bh.consume(c);
+    }
+
+    @GenerateMicroBenchmark(BenchmarkType.AverageTimePerOp)
+    public void explicit_testShort(BlackHole bh) {
+        bh.consume(s);
+    }
+
+    @GenerateMicroBenchmark(BenchmarkType.AverageTimePerOp)
+    public void explicit_testInt(BlackHole bh) {
+        bh.consume(i);
+    }
+
+    @GenerateMicroBenchmark(BenchmarkType.AverageTimePerOp)
+    public void explicit_testLong(BlackHole bh) {
+        bh.consume(l);
+    }
+
+    @GenerateMicroBenchmark(BenchmarkType.AverageTimePerOp)
+    public void explicit_testFloat(BlackHole bh) {
+        bh.consume(f);
+    }
+
+    @GenerateMicroBenchmark(BenchmarkType.AverageTimePerOp)
+    public void explicit_testDouble(BlackHole bh) {
+        bh.consume(d);
+    }
+
+    @GenerateMicroBenchmark(BenchmarkType.AverageTimePerOp)
+    public void explicit_testObject(BlackHole bh) {
+        bh.consume(o);
+    }
+
+    @GenerateMicroBenchmark(BenchmarkType.AverageTimePerOp)
+    public void explicit_testArray(BlackHole bh) {
+        bh.consume(os);
+    }
+
+}