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undefect. CWE-407 — 63 sites patched across 27 ecosystems

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Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com

Patches, unit tests, benchmarks, whitepaper, and outreach briefs.
Public domain — no copyright claimed. Use freely.
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russell@unturf.com 2026-03-26 17:11:57 -04:00
commit 0a580b313d
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119
test/jdk/java/lang/management/MemoryMXBean/MemoryUtil.java Normal file
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/*
* Copyright (c) 2004, 2024, 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.
*/
/*
* @bug 4982289
* @summary Utility class.
* @author Mandy Chung
*/
import java.lang.management.*;
import java.util.*;
public class MemoryUtil {
private static String INDENT = " ";
private static String formatSize(String name, long value) {
StringBuffer buf = new StringBuffer(name + " = " + value);
if (value > 0) {
buf.append(" (" + (value >> 10) + "K)");
}
return buf.toString();
}
public static void printMemoryUsage(MemoryUsage usage) {
System.out.println(INDENT + formatSize("Initial size ", usage.getInit()));
System.out.println(INDENT + formatSize("Used size ", usage.getUsed()));
System.out.println(INDENT + formatSize("Committd size ", usage.getCommitted()));
System.out.println(INDENT + formatSize("Max size ", usage.getMax()));
}
public static void printMemoryPool(MemoryPoolMXBean pool) {
System.out.println(INDENT + "Memory Pool name: " + pool.getName());
System.out.println(INDENT + "Type: " + pool.getType());
System.out.println(INDENT + "Memory Usage: " +
pool.getUsage());
System.out.println(INDENT + "Threshold: " +
(pool.isUsageThresholdSupported() ? pool.getUsageThreshold() : -1));
System.out.println(INDENT + "ThresholdCount: " +
(pool.isUsageThresholdSupported() ? pool.getUsageThresholdCount() : -1));
System.out.println(INDENT + "CollectionThresholdCount: " +
(pool.isCollectionUsageThresholdSupported() ? pool.getCollectionUsageThresholdCount() : -1));
System.out.print(INDENT + "Manager = [");
String[] mgrs = pool.getMemoryManagerNames();
for (int i = 0; i < mgrs.length; i++) {
System.out.print(mgrs[i]);
if (i < (mgrs.length - 1)) {
System.out.print(" | ");
}
}
System.out.println("]");
}
public static void printMemoryPools(List pools) {
ListIterator iter = pools.listIterator();
System.out.println(INDENT + "Number of memory pools = " + pools.size());
while (iter.hasNext()) {
MemoryPoolMXBean pool = (MemoryPoolMXBean) iter.next();
printMemoryPool(pool);
}
}
public static void printMemoryManager(MemoryManagerMXBean mgr) {
if (mgr instanceof GarbageCollectorMXBean) {
GarbageCollectorMXBean gc = (GarbageCollectorMXBean) mgr;
System.out.println(INDENT + "Garbage Collector name: " + gc.getName());
System.out.println(INDENT + "GC Count: " + gc.getCollectionCount());
System.out.println(INDENT + "GC Time : " + gc.getCollectionTime());
} else {
System.out.println(INDENT + "Memory Manager name: " + mgr.getName());
}
System.out.print("Pool = [");
String[] pools = mgr.getMemoryPoolNames();
for (int i = 0; i < pools.length; i++) {
System.out.print(INDENT + pools[i]);
if (i < (pools.length - 1)) {
System.out.print(" | ");
}
}
System.out.println("]");
}
public static void printMemoryManagers(List managers) {
ListIterator iter = managers.listIterator();
System.out.println(INDENT + "Number of memory managers = " +
managers.size());
while (iter.hasNext()) {
MemoryManagerMXBean mgr = (MemoryManagerMXBean) iter.next();
printMemoryManager(mgr);
}
}
public static void printMemoryNotificationInfo
(MemoryNotificationInfo minfo, String type) {
System.out.print("Notification for " + minfo.getPoolName());
System.out.print(" [type = " + type);
System.out.println(" count = " + minfo.getCount() + "]");
System.out.println(INDENT + "usage = " + minfo.getUsage());
}
}