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/*
* Copyright (c) 2004, 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.monitoring.MemoryPoolMBean.isCollectionUsageThresholdExceeded;
import java.lang.management.*;
import java.io.*;
import java.util.*;
import nsk.share.*;
import nsk.monitoring.share.*;
public class isexceeded001 {
private static boolean testFailed = false;
static MemoryMonitor monitor;
public static void main(String[] argv) {
System.exit(Consts.JCK_STATUS_BASE + run(argv, System.out));
}
public static int run(String[] argv, PrintStream out) {
ArgumentHandler argHandler = new ArgumentHandler(argv);
Log log = new Log(out, argHandler);
monitor = Monitor.getMemoryMonitor(log, argHandler);
List pools = monitor.getMemoryPoolMBeans();
for (int i = 0; i < pools.size(); i++) {
Object pool = pools.get(i);
log.display(i + " pool " + monitor.getName(pool));
if (!monitor.isCollectionThresholdSupported(pool)) {
log.display(" does not support collection usage thresholds");
// UnsupportedOperationException is expected
try {
boolean isExceeded
= monitor.isCollectionThresholdExceeded(pool);
log.complain("isCollectionUsageThresholdExceeded() returned"
+ " " + isExceeded + "instead of "
+ "UnsupportedOperationException in pool "
+ monitor.getName(pool));
testFailed = true;
} catch (Exception e) {
Throwable unwrapped = unwrap(e);
if (unwrapped instanceof UnsupportedOperationException) {
log.display(" UnsupportedOperationException is "
+ "thrown");
} else {
log.complain("Incorrect execption " + unwrapped
+ " is thrown, "
+ "UnsupportedOperationException is "
+ "expected");
unwrapped.printStackTrace(log.getOutStream());
testFailed = true;
}
} // try
continue;
} // if
log.display(" supports collection usage thresholds");
// Set a threshold that is greater than used value
MemoryUsage usage = monitor.getCollectionUsage(pool);
long used = usage.getUsed();
long max = usage.getMax();
long threshold = used + 1;
if ( (max > -1) && (threshold > max) )
threshold = max;
log.display(" setting threshold " + threshold + " "
+ monitor.getCollectionUsage(pool));
try {
monitor.setCollectionThreshold(pool, threshold);
} catch (Exception e) {
log.complain("Unexpected " + e + " in pool "
+ monitor.getName(pool));
e.printStackTrace(log.getOutStream());
testFailed = true;
continue;
}
boolean isExceeded = monitor.isCollectionThresholdExceeded(pool);
log.display(" threshold " + threshold + " is set, (used = " + used
+ ", isExceeded = " + isExceeded + ")");
// Eat some memory - provoke usage of the pool to cross the
// threshold value
byte[] b = new byte[100 * 1024]; // Eat 100K
threshold = monitor.getCollectionThreshold(pool);
usage = monitor.getCollectionUsage(pool);
used = usage.getUsed();
if (used >= threshold) {
log.display(" used value (" + used + ") crossed the threshold "
+ "value (" + threshold + ")");
isExceeded = monitor.isCollectionThresholdExceeded(pool);
if (!isExceeded) {
// Refresh the values
threshold = monitor.getCollectionThreshold(pool);
usage = monitor.getCollectionUsage(pool);
if (used >= threshold) {
log.complain("isCollectionUsageThresholdExceeded() "
+ "returned false, while threshold = "
+ threshold + " and " + "used = " + used);
testFailed = true;
}
}
} else {
log.display(" used value (" + used + ") did not cross the "
+ "threshold value (" + threshold + ")");
isExceeded = monitor.isCollectionThresholdExceeded(pool);
if (isExceeded) {
// Refresh the values
threshold = monitor.getCollectionThreshold(pool);
usage = monitor.getCollectionUsage(pool);
if (used < threshold) {
log.complain("isCollectionUsageThresholdExceeded() "
+ "returned true, while threshold = "
+ threshold + " and " + "used = " + used);
testFailed = true;
}
}
}
} // for i
if (testFailed)
out.println("TEST FAILED");
return (testFailed) ? Consts.TEST_FAILED : Consts.TEST_PASSED;
}
static Throwable unwrap(Throwable throwable) {
Throwable unwrapped, t = throwable;
do {
unwrapped = t;
if (unwrapped instanceof UnsupportedOperationException) {
break;
}
t = unwrapped.getCause();
} while (t != null);
return unwrapped;
}
}
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