Quelle TesterImportHandlerPerformance.java
Sprache: JAVA
/* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License.
*/ package jakarta.el;
import org.junit.Test;
publicclass TesterImportHandlerPerformance {
/* * This test is looking at the cost of looking up a class when the standard JSP package imports are present: - * java.lang - jakarta.servlet - jakarta.servlet.http - jakarta.servlet.jsp * * Before optimisation, this test took ~4.6s on markt's desktop After optimisation, this test took ~0.05s on markt's * desktop
*/
@Test publicvoid testBug62453() throws Exception { long totalTime = 0; for (int i = 0; i < 100000; i++) {
ImportHandler ih = new ImportHandler();
ih.importPackage("jakarta.servlet");
ih.importPackage("jakarta.servlet.http");
ih.importPackage("jakarta.servlet.jsp"); long start = System.nanoTime();
ih.resolveClass("unknown"); long end = System.nanoTime();
totalTime += (end - start);
}
System.out.println("Time taken: " + totalTime + "ns");
}
}
Messung V0.5
¤ Dauer der Verarbeitung: 0.0 Sekunden
(vorverarbeitet)
¤
Die Informationen auf dieser Webseite wurden
nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit,
noch Qualität der bereit gestellten Informationen zugesichert.
Bemerkung:
Die farbliche Syntaxdarstellung und die Messung sind noch experimentell.