92 lines
3.4 KiB
Java
92 lines
3.4 KiB
Java
/*
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* Copyright (c) 2020, 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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package nsk.jdi.HiddenClass.events;
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import nsk.jdi.HiddenClass.events.DebuggeeBase;
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import nsk.jdi.HiddenClass.events.HiddenClass;
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import nsk.jdi.HiddenClass.events.HCInterf;
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import nsk.share.jdi.ArgumentHandler;
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import sun.hotspot.WhiteBox;
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/* Debuggee class. */
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class events001a extends DebuggeeBase {
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private final WhiteBox WB = WhiteBox.getWhiteBox();
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private events001a(ArgumentHandler argHandler) {
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super(argHandler);
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}
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public static void main(String args[]) {
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ArgumentHandler argHandler = new ArgumentHandler(args);
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events001a testApp = new events001a(argHandler);
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int status = testApp.runIt();
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System.exit(DebuggerBase.JCK_STATUS_BASE + status);
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}
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public int runIt() {
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int status = DebuggerBase.PASSED;
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logMsg("\nDebuggee: started");
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try {
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testHiddenClass();
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} catch (Throwable t) {
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status = DebuggerBase.FAILED;
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logMsg("FAIL: Throwable was caught in debuggee main: " + t);
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}
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logMsg("\nDebuggee: finished");
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return status;
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}
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public void testHiddenClass() throws Exception {
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syncWithDebugger();
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// Define a hidden class.
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Class<?> hc = HiddenClass.defineHiddenClass();
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logMsg("Debuggee: defined a hidden class: " + hc.getName());
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// It is impossible to use a hidden class name to define a variable,
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// so we use the interface which the tested hidden class implements.
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HCInterf hcObj = (HCInterf)hc.newInstance();
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logMsg("Debuggee: created an instance of a hidden class: " + hc.getName());
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syncWithDebugger();
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// Invoke a hidden class method.
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logMsg("Debuggee: invoking a method of a hidden class: " + hc.getName());
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hcObj.hcMethod();
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// Provoke a hidden class unload event.
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// One more hidden class has to be defined to provoke class unload.
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// The first hidden class can not be unloaded. There are some JDI Field's
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// or Method's associated with the hidden class which keep it alive.
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logMsg("Debuggee: started provoking class unload events");
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Class<?> hcForUnload = HiddenClass.defineHiddenClass();
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hcForUnload = null;
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WB.fullGC(); // force full GC with WB to get hidden class unloaded
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logMsg("Debuggee: finished provoking class unload events");
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quitSyncWithDebugger();
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}
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}
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