106 lines
3.7 KiB
Java
106 lines
3.7 KiB
Java
/*
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* Copyright (c) 2002, 2018, 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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* @key gc
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*
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* @summary converted from VM Testbase gc/gctests/nativeGC01.
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* VM Testbase keywords: [gc]
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* VM Testbase readme:
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* This test creates a large linked list of 10,000 elements. After creating the
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* linked list a native function is called. The native function calls a java
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* method that removes all java references to the linked list and forces a garbage
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* collection. The only live reference to the linked list if on the C stack . As
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* there is a live reference on the C stack, the linked list should not be garbage collected.
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* After forcing a garbage collection, the native code calls another java method
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* that traverses the linked list to verify that the linked list has not
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* been garbage collected.
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*
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* @library /vmTestbase
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* /test/lib
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* @run driver jdk.test.lib.FileInstaller . .
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* @run main/othervm/native gc.gctests.nativeGC01.nativeGC01
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*/
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package gc.gctests.nativeGC01;
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import nsk.share.test.*;
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import nsk.share.gc.*;
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import java.util.Vector;
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public class nativeGC01 extends TestBase {
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private CircularLinkedList cl;
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public native int nativeMethod01(CircularLinkedList cl);
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// This method is a callback that is invoked by a by the native
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// function "nativeMethod()" before the bowels of the nativeMethod()
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// function are executed.
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public void callbackGC() {
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cl = null;
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System.gc();
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}
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public void run() {
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int elementCount;
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cl = buildBigCircularLinkedList(); // build a 2 meg Circular Linked list.
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// Determine number of elements in the linked list with a native method
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// after GC has been done.
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try {
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elementCount = nativeMethod01(cl);
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if (elementCount == 10000) {
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log.info("Test Passed");
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} else {
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log.info("Test Failed");
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setFailed(true);
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}
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} catch (Exception e ) {
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log.info(e);
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log.info("broken test");
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setFailed(true);
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}
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}
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// build a circular linked list of 0.4 Meg
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private CircularLinkedList buildBigCircularLinkedList() {
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CircularLinkedList cl = new CircularLinkedList(100);
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for(int i = 0; i < 10000; i++)
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cl.grow();
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return cl;
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}
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static {
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System.loadLibrary("nativeGC01");
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}
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public static void main(String args[]){
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Tests.runTest(new nativeGC01(), args);
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}
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}
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