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/*
* Copyright (c) 2003, 2018, 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.jvmti.PopFrame;
import java.io.*;
/**
* This test checks that the JVMTI function <code>PopFrame()</code>
* correctly returns the following errors:
* <li><i>JVMTI_ERROR_NULL_POINTER</i>
* <li><i>JVMTI_ERROR_INVALID_THREAD</i>
* <li><i>JVMTI_ERROR_THREAD_NOT_SUSPENDED</i><br>
* and no JVMTI events will be generated by the function.<br>
* The test creates an instance of inner class <code>popFrameCls</code>
* and start it in a separate thread. Then the test tries to pop frame
* with the following erroneous thread's parameter of the
* <code>PopFrame()</code>:
* <li>NULL pointer to the thread
* <li>an invalid thread
* <li>the non suspended popFrameCls' thread<br><br>
* The test was changed due to the bug 4448675.
*/
public class popframe002 {
static final int PASSED = 0;
static final int FAILED = 2;
static final int JCK_STATUS_BASE = 95;
static volatile boolean popFdone = false;
static volatile int totRes = PASSED;
private PrintStream out;
private popFrameCls popFrameClsThr;
static Object readi = new Object(); // for notification about readiness
static Object barrier = new Object(); // for suspending a child thread
static {
try {
System.loadLibrary("popframe002");
} catch (UnsatisfiedLinkError e) {
System.err.println("Could not load popframe002 library");
System.err.println("java.library.path:" +
System.getProperty("java.library.path"));
throw e;
}
}
// t_case:
// 1 - PopFrame for NULL thread
// 2 - PopFrame for invalid thread (not Thread object)
// 3 - PopFrame for non-suspended thread
native static int doPopFrame(int t_case, popFrameCls popFrameClsThr);
public static void main(String[] argv) {
argv = nsk.share.jvmti.JVMTITest.commonInit(argv);
System.exit(run(argv, System.out) + JCK_STATUS_BASE);
}
public static int run(String argv[], PrintStream out) {
return new popframe002().runIt(argv, out);
}
private int runIt(String argv[], PrintStream out) {
int retValue = 0;
this.out = out;
popFrameClsThr = new popFrameCls();
synchronized (barrier) { // force a child thread to pause
synchronized(readi) {
popFrameClsThr.start(); // start the child thread
// wait until the thread will enter into a necessary method
try {
readi.wait(); // wait for the child readiness
} catch (Exception e) {
out.println("TEST FAILURE: waiting for " +
popFrameClsThr.toString() + ": caught " + e);
return FAILED;
}
}
/* check that if PopFrame() would be invoked with NULL pointer to
the thread, it will return the error JVMTI_ERROR_NULL_POINTER */
totRes = retValue = doPopFrame(1, popFrameClsThr);
if (retValue == PASSED) {
out.println("Check #1 PASSED:\n" +
"\tPopFrame(), being invoked with NULL pointer " +
"to the thread,\n" +
"\treturned the appropriate error JVMTI_ERROR_NULL_POINTER");
}
/* check that if the thread, whose top frame is to be popped,
is invalid, the PopFrame() will return the error
JVMTI_ERROR_INVALID_THREAD */
retValue = doPopFrame(2, popFrameClsThr);
if (retValue == FAILED) {
popFdone = true;
totRes = FAILED;
} else {
out.println("Check #2 PASSED:\n" +
"\tPopFrame(), being invoked with " +
"the invalid thread,\n" +
"\treturned the appropriate error " +
"JVMTI_ERROR_INVALID_THREAD");
}
/* check that if the thread, whose top frame is to be popped,
has not been suspended, the PopFrame() will return the error
JVMTI_ERROR_THREAD_NOT_SUSPENDED */
retValue = doPopFrame(3, popFrameClsThr);
if (retValue == FAILED) {
popFdone = true;
totRes = FAILED;
} else {
out.println("Check #3 PASSED:\n" +
"\tPopFrame(), being invoked with " +
"the non suspended thread,\n" +
"\treturned the appropriate error " +
"JVMTI_ERROR_THREAD_NOT_SUSPENDED");
}
}
return totRes;
}
class popFrameCls extends Thread {
public void run() {
boolean compl = true;
if (popframe002.popFdone) { // popping has been done
out.println("TEST FAILED: frame with popFrameCls.run() was popped");
popframe002.totRes = FAILED;
} else {
synchronized(readi) {
readi.notify(); // notify the main thread
}
}
try {
// pause here and get the main thread a chance to run
synchronized (popframe002.barrier) {}
compl = false;
} catch (Exception e) {
out.println("FAILURE: popFrameCls (" + this +
"): caught " + e);
compl = false;
} finally {
if (compl) {
out.println("TEST FAILED: finally block was executed after PopFrame()");
popframe002.totRes = FAILED;
}
}
}
}
}
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