/*
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* Copyright (C) 2010 Google Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package benchmarks.regression;
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import java.security.AccessController;
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import java.security.PrivilegedAction;
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public class DoPrivilegedBenchmark {
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public void timeDirect(int reps) throws Exception {
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for (int i = 0; i < reps; ++i) {
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String lineSeparator = System.getProperty("line.separator");
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}
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}
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public void timeFastAndSlow(int reps) throws Exception {
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for (int i = 0; i < reps; ++i) {
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String lineSeparator;
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if (System.getSecurityManager() == null) {
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lineSeparator = System.getProperty("line.separator");
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} else {
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lineSeparator = AccessController.doPrivileged(new PrivilegedAction<String>() {
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public String run() {
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return System.getProperty("line.separator");
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}
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});
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}
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}
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}
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public void timeNewAction(int reps) throws Exception {
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for (int i = 0; i < reps; ++i) {
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String lineSeparator = AccessController.doPrivileged(new PrivilegedAction<String>() {
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public String run() {
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return System.getProperty("line.separator");
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}
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});
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}
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}
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public void timeReusedAction(int reps) throws Exception {
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final PrivilegedAction<String> action = new ReusableAction("line.separator");
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for (int i = 0; i < reps; ++i) {
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String lineSeparator = AccessController.doPrivileged(action);
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}
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}
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private static final class ReusableAction implements PrivilegedAction<String> {
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private final String propertyName;
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public ReusableAction(String propertyName) {
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this.propertyName = propertyName;
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}
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public String run() {
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return System.getProperty(propertyName);
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}
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}
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}
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