63 lines
2.3 KiB
Java
63 lines
2.3 KiB
Java
/*
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* Copyright (C) 2022 THL A29 Limited, a Tencent company. 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 8284910
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* @summary Check that the cleaner is not bound to the PasswordCallback object
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*/
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import javax.security.auth.callback.PasswordCallback;
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import java.util.WeakHashMap;
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public final class CheckCleanerBound {
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private final static WeakHashMap<PasswordCallback, ?> weakHashMap =
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new WeakHashMap<>();
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public static void main(String[] args) throws Exception {
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// Create an object
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PasswordCallback passwordCallback =
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new PasswordCallback("Password: ", false);
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passwordCallback.setPassword("ThisIsAPassword".toCharArray());
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weakHashMap.put(passwordCallback, null);
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passwordCallback = null;
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// Check if the PasswordCallback object could be collected.
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// Wait to trigger the cleanup.
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for (int i = 0; i < 10 && weakHashMap.size() != 0; i++) {
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System.gc();
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Thread.sleep(100);
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}
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// Check if the object has been collected. The collection will not
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// happen if the cleaner implementation in PasswordCallback is bound
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// to the PasswordCallback object.
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if (weakHashMap.size() > 0) {
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throw new RuntimeException(
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"PasswordCallback object is not released");
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}
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}
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}
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