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/*
* Copyright (c) 2020, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package nsk.jdi.HiddenClass.events;
import nsk.jdi.HiddenClass.events.DebuggeeBase;
import nsk.jdi.HiddenClass.events.HiddenClass;
import nsk.jdi.HiddenClass.events.HCInterf;
import nsk.share.jdi.ArgumentHandler;
import jdk.test.whitebox.WhiteBox;
/* Debuggee class. */
class events001a extends DebuggeeBase {
private final WhiteBox WB = WhiteBox.getWhiteBox();
private events001a(ArgumentHandler argHandler) {
super(argHandler);
}
public static void main(String args[]) {
ArgumentHandler argHandler = new ArgumentHandler(args);
events001a testApp = new events001a(argHandler);
int status = testApp.runIt();
System.exit(DebuggerBase.JCK_STATUS_BASE + status);
}
public int runIt() {
int status = DebuggerBase.PASSED;
logMsg("\nDebuggee: started");
try {
testHiddenClass();
} catch (Throwable t) {
status = DebuggerBase.FAILED;
logMsg("FAIL: Throwable was caught in debuggee main: " + t);
}
logMsg("\nDebuggee: finished");
return status;
}
public void testHiddenClass() throws Exception {
syncWithDebugger();
// Define a hidden class.
Class<?> hc = HiddenClass.defineHiddenClass();
logMsg("Debuggee: defined a hidden class: " + hc.getName());
// It is impossible to use a hidden class name to define a variable,
// so we use the interface which the tested hidden class implements.
HCInterf hcObj = (HCInterf)hc.newInstance();
logMsg("Debuggee: created an instance of a hidden class: " + hc.getName());
syncWithDebugger();
// Invoke a hidden class method.
logMsg("Debuggee: invoking a method of a hidden class: " + hc.getName());
hcObj.hcMethod();
// Provoke a hidden class unload event.
// One more hidden class has to be defined to provoke class unload.
// The first hidden class can not be unloaded. There are some JDI Field's
// or Method's associated with the hidden class which keep it alive.
logMsg("Debuggee: started provoking class unload events");
Class<?> hcForUnload = HiddenClass.defineHiddenClass();
hcForUnload = null;
WB.fullGC(); // force full GC with WB to get hidden class unloaded
logMsg("Debuggee: finished provoking class unload events");
quitSyncWithDebugger();
}
}
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