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8215521: add microbenchmark to measure AccessController.getContext

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Reviewed-by: redestad, alanb
This commit is contained in:
Eric Caspole 2019-10-04 12:00:16 -04:00
parent 80d6ffee5f
commit 4325a8443b
1 changed files with 86 additions and 0 deletions
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test/micro/org/openjdk/bench/java/security/GetContext.java Normal file
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/*
* Copyright (c) 2014, 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. 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.security;
import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.BenchmarkMode;
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 java.security.AccessControlContext;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.util.concurrent.TimeUnit;
/**
* Benchmark measuring AccessController.getContext
*/
@BenchmarkMode(Mode.AverageTime)
@OutputTimeUnit(TimeUnit.NANOSECONDS)
@State(Scope.Thread)
public abstract class GetContext {
public static class Top extends GetContext {
@Benchmark
public AccessControlContext testNonPriv() {
return AccessController.getContext();
}
@Benchmark
public AccessControlContext testPriv() {
PrivilegedAction<AccessControlContext> pa = () -> AccessController.getContext();
return AccessController.doPrivileged(pa);
}
}
public static class Deep extends GetContext {
@Param({"2", "50"})
int depth;
private AccessControlContext recurse(int depth) {
if (depth > 0) {
return recurse(depth - 1);
} else {
return AccessController.getContext();
}
}
@Benchmark
public AccessControlContext testNonPrivRecurse() {
return recurse(depth);
}
@Benchmark
public AccessControlContext testPrivInline() {
PrivilegedAction<AccessControlContext> pa = () -> recurse(depth);
return AccessController.doPrivileged(pa);
}
}
}