97 lines
3.0 KiB
Java
97 lines
3.0 KiB
Java
/*
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* Copyright (c) 1999, 2024, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 4250354
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* @key headful
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* @summary tests that JNI global refs are cleaned up correctly
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* @run main/timeout=600 NoEventsLeakTest
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*/
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import java.awt.Canvas;
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import java.awt.EventQueue;
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import java.awt.Frame;
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public class NoEventsLeakTest extends Frame {
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static final int nLoopCount = 1000;
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private static void initialize() {
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NoEventsLeakTest app = new NoEventsLeakTest();
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boolean result = app.run();
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if (result) {
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throw new RuntimeException("Memory leak in Component");
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}
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System.out.println("Test Passed");
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}
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public boolean run() {
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setSize(10, 10);
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addNotify();
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for (int i = 0; i < nLoopCount; i++) {
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Canvas panel = new TestCanvas();
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add(panel, 0);
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remove(0);
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panel = null;
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System.gc();
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}
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try {
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Thread.currentThread().sleep(1000);
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} catch (InterruptedException e) {
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}
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System.gc();
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System.out.println("Checking");
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return ((TestCanvas.created - TestCanvas.finalized) > 800);
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}
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public static void main(String[] args) throws Exception {
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EventQueue.invokeAndWait(NoEventsLeakTest::initialize);
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}
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}
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class TestCanvas extends Canvas {
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static int finalized = 0;
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static int created = 0;
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static final int nLoopPrint = 100;
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public TestCanvas() {
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if (created % nLoopPrint == 0) {
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System.out.println("Created " + getClass() + " " + created);
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}
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created++;
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}
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@SuppressWarnings("removal")
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protected void finalize() {
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try {
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super.finalize();
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if (finalized % nLoopPrint == 0) {
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System.out.println("Finalized " + getClass() + " " + finalized);
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}
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finalized++;
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} catch (Throwable t) {
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System.out.println("Exception in " + getClass() + ": " + t);
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}
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}
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}
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