| /* |
| * Copyright (c) 1998, 2021 Oracle and/or its affiliates. All rights reserved. |
| * |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Public License v. 2.0 which is available at |
| * http://www.eclipse.org/legal/epl-2.0, |
| * or the Eclipse Distribution License v. 1.0 which is available at |
| * http://www.eclipse.org/org/documents/edl-v10.php. |
| * |
| * SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause |
| */ |
| |
| // Contributors: |
| // Oracle - initial API and implementation from Oracle TopLink |
| package org.eclipse.persistence.testing.framework; |
| |
| import java.util.*; |
| |
| /** |
| * Used to measure the amount of memory required for a task. |
| */ |
| public abstract class MemoryRegressionTestCase extends PerformanceRegressionTestCase { |
| |
| public MemoryRegressionTestCase() { |
| this.testRunTime = DEFAULT_TEST_TIME; |
| this.allowableDecrease = DEFAULT_ALLOWABLE_DECREASE; |
| this.tests = new ArrayList(); |
| } |
| |
| /** |
| * Executes this test measuring the memory delta. |
| */ |
| @Override |
| public void executeTest() throws Throwable { |
| PerformanceComparisonTestResult result = new PerformanceComparisonTestResult(this, "Passed"); |
| setTestResult(result); |
| try { |
| // Repeat the test and baseline for the number of repeats. |
| for (int index = 0; index < REPEATS; index++) { |
| long startMemory, endMemory; |
| try { |
| startTest(); |
| forceGC(); |
| startMemory = Runtime.getRuntime().freeMemory(); |
| test(); |
| forceGC(); |
| endMemory = Runtime.getRuntime().freeMemory(); |
| } finally { |
| endTest(); |
| } |
| result.addTestCount(startMemory - endMemory, 0); |
| |
| for (int testIndex = 0; testIndex < getTests().size(); testIndex++) { |
| PerformanceComparisonTest test = (PerformanceComparisonTest)getTests().get(testIndex); |
| ((TestCase)test).setExecutor(getExecutor()); |
| try { |
| test.startTest(); |
| forceGC(); |
| startMemory = Runtime.getRuntime().freeMemory(); |
| endMemory = startMemory; |
| ((TestCase)test).test(); |
| forceGC(); |
| endMemory = Runtime.getRuntime().freeMemory(); |
| } finally { |
| test.endTest(); |
| } |
| result.addTestCount(startMemory - endMemory, testIndex + 1); |
| } |
| } |
| } finally { |
| result.computeResults(); |
| } |
| } |
| } |