146 lines
4.4 KiB
Java
146 lines
4.4 KiB
Java
/*
|
|
* Copyright (c) 2015, 2019, 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.
|
|
*
|
|
* 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.vm.lang;
|
|
|
|
import java.util.concurrent.TimeUnit;
|
|
import org.openjdk.jmh.annotations.Benchmark;
|
|
import org.openjdk.jmh.annotations.BenchmarkMode;
|
|
import org.openjdk.jmh.annotations.Fork;
|
|
import org.openjdk.jmh.annotations.Measurement;
|
|
import org.openjdk.jmh.annotations.Mode;
|
|
import org.openjdk.jmh.annotations.OutputTimeUnit;
|
|
import org.openjdk.jmh.annotations.Param;
|
|
import org.openjdk.jmh.annotations.Scope;
|
|
import org.openjdk.jmh.annotations.State;
|
|
import org.openjdk.jmh.annotations.Warmup;
|
|
import org.openjdk.jmh.infra.Blackhole;
|
|
|
|
@State(value = Scope.Benchmark)
|
|
@BenchmarkMode(Mode.AverageTime)
|
|
@OutputTimeUnit(TimeUnit.NANOSECONDS)
|
|
@Warmup(iterations = 4, time = 2)
|
|
@Measurement(iterations = 4, time = 2)
|
|
@Fork(value = 3)
|
|
public class ThrowableRuntimeMicros {
|
|
|
|
// TestStack will add this number of calls to the call stack
|
|
@Param({"4", "100", "1000"})
|
|
// For more thorough testing, consider:
|
|
// @Param({"4", "10", "100", "256", "1000"})
|
|
public int depth;
|
|
|
|
/** Build a call stack of a given size, then run trigger code in it.
|
|
* (Does not account for existing frames higher up in the JMH machinery).
|
|
*/
|
|
static class TestStack {
|
|
final long fence;
|
|
long current;
|
|
final Runnable trigger;
|
|
|
|
TestStack(long max, Runnable trigger) {
|
|
this.fence = max;
|
|
this.current = 0;
|
|
this.trigger = trigger;
|
|
}
|
|
|
|
public void start() {
|
|
one();
|
|
}
|
|
|
|
public void one() {
|
|
if (check()) {
|
|
two();
|
|
}
|
|
}
|
|
|
|
void two() {
|
|
if (check()) {
|
|
three();
|
|
}
|
|
}
|
|
|
|
private void three() {
|
|
if (check()) {
|
|
one();
|
|
}
|
|
}
|
|
|
|
boolean check() {
|
|
if (++current == fence) {
|
|
trigger.run();
|
|
return false;
|
|
} else {
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
|
|
@Benchmark
|
|
public void testThrowableInit(Blackhole bh) {
|
|
final Blackhole localBH = bh;
|
|
final boolean[] done = {false};
|
|
new TestStack(depth, new Runnable() {
|
|
public void run() {
|
|
localBH.consume(new Throwable());
|
|
done[0] = true;
|
|
}
|
|
}).start();
|
|
if (!done[0]) {
|
|
throw new RuntimeException();
|
|
}
|
|
}
|
|
|
|
@Benchmark
|
|
public void testThrowableGetStackTrace(Blackhole bh) {
|
|
final Blackhole localBH = bh;
|
|
final boolean[] done = {false};
|
|
new TestStack(depth, new Runnable() {
|
|
public void run() {
|
|
localBH.consume(new Throwable().getStackTrace());
|
|
done[0] = true;
|
|
}
|
|
}).start();
|
|
if (!done[0]) {
|
|
throw new RuntimeException();
|
|
}
|
|
}
|
|
|
|
@Benchmark
|
|
public void testThrowableSTEtoString(Blackhole bh) {
|
|
final Blackhole localBH = bh;
|
|
final boolean[] done = {false};
|
|
new TestStack(depth, new Runnable() {
|
|
public void run() {
|
|
Throwable t = new Throwable();
|
|
for (StackTraceElement ste : t.getStackTrace()) {
|
|
localBH.consume(ste.toString());
|
|
}
|
|
done[0] = true;
|
|
}
|
|
}).start();
|
|
if (!done[0]) {
|
|
throw new RuntimeException();
|
|
}
|
|
}
|
|
}
|