private String getThreadName(final Instance threadInstance) {
Object threadName = threadInstance.getValueOfField("name"); // NOI18N
PrimitiveArrayInstance chars;
int offset = 0;
int len;
if (threadName == null) {
return "*null*"; // NOI18N
}
if (threadName instanceof PrimitiveArrayInstance) {
chars = (PrimitiveArrayInstance) threadName;
len = chars.getLength();
} else {
Instance stringInstance = (Instance) threadName;
assert stringInstance.getJavaClass().getName().equals(String.class.getName());
chars = (PrimitiveArrayInstance) stringInstance.getValueOfField("value"); // NOI18N
if (chars != null) {
Integer oi = (Integer) stringInstance.getValueOfField("offset"); // NOI18N
Integer ci = (Integer) stringInstance.getValueOfField("count"); // NOI18N
if (oi != null) {
offset = oi.intValue();
}
if (ci != null) {
len = ci.intValue();
} else {
len = chars.getLength();
}
} else {
return "*null*"; // NOI18N
}
}
List<String> charsList = chars.getValues();
List<String> stringList = charsList.subList(offset, offset + len);
char charArr[] = new char[stringList.size()];
int j = 0;
for (String ch : stringList) {
charArr[j++] = ch.charAt(0);
}
return new String(charArr);
}
private long computeFinalizers(Heap heap) {
JavaClass finalizerClass = heap.getJavaClassByName("java.lang.ref.Finalizer"); // NOI18N
if (finalizerClass != null) {
Instance queue = (Instance) finalizerClass.getValueOfStaticField("queue"); // NOI18N
if (queue != null) {
Long len = (Long) queue.getValueOfField("queueLength"); // NOI18N
if (len != null) {
return len.longValue();
}
}
}
return -1;
}
private synchronized String getStackTrace() {
if (stackTrace == null) {
boolean gotoSourceAvailable =
heapFragmentWalker.getHeapDumpProject() != null && GoToSource.isAvailable();
StringBuilder sb = new StringBuilder();
Heap h = heapFragmentWalker.getHeapFragment();
Collection<GCRoot> roots = h.getGCRoots();
Map<ThreadObjectGCRoot, Map<Integer, List<JavaFrameGCRoot>>> javaFrameMap =
computeJavaFrameMap(roots);
// Use this to enable VisualVM color scheme for threads dumps:
// sw.append("<pre style='color: #cc3300;'>"); // NOI18N
sb.append("<pre>"); // NOI18N
for (GCRoot root : roots) {
if (root.getKind().equals(GCRoot.THREAD_OBJECT)) {
ThreadObjectGCRoot threadRoot = (ThreadObjectGCRoot) root;
Instance threadInstance = threadRoot.getInstance();
if (threadInstance != null) {
String threadName = getThreadName(threadInstance);
Boolean daemon = (Boolean) threadInstance.getValueOfField("daemon"); // NOI18N
Integer priority = (Integer) threadInstance.getValueOfField("priority"); // NOI18N
Long threadId = (Long) threadInstance.getValueOfField("tid"); // NOI18N
Integer threadStatus =
(Integer) threadInstance.getValueOfField("threadStatus"); // NOI18N
StackTraceElement stack[] = threadRoot.getStackTrace();
Map<Integer, List<JavaFrameGCRoot>> localsMap = javaFrameMap.get(threadRoot);
String style = "";
if (threadRoot.equals(oome)) {
style = "style=\"color: #FF0000\"";
}
// --- Use this to enable VisualVM color scheme for threads dumps: ---
// sw.append(" <span style=\"color: #0033CC\">"); // NOI18N
sb.append(" <a name=")
.append(threadInstance.getInstanceId())
.append("></a><b ")
.append(style)
.append(">"); // NOI18N
// -------------------------------------------------------------------
sb.append("\"")
.append(htmlize(threadName))
.append("\"")
.append(daemon.booleanValue() ? " daemon" : "")
.append(" prio=")
.append(priority); // NOI18N
if (threadId != null) {
sb.append(" tid=").append(threadId); // NOI18N
}
if (threadStatus != null) {
State tState = sun.misc.VM.toThreadState(threadStatus.intValue());
sb.append(" ").append(tState); // NOI18N
}
// --- Use this to enable VisualVM color scheme for threads dumps: ---
// sw.append("</span><br>"); // NOI18N
sb.append("</b><br>"); // NOI18N
// -------------------------------------------------------------------
if (stack != null) {
for (int i = 0; i < stack.length; i++) {
String stackElHref;
StackTraceElement stackElement = stack[i];
String stackElementText = htmlize(stackElement.toString());
if (gotoSourceAvailable) {
String className = stackElement.getClassName();
String method = stackElement.getMethodName();
int lineNo = stackElement.getLineNumber();
String stackUrl =
OPEN_THREADS_URL + className + "|" + method + "|" + lineNo; // NOI18N
// --- Use this to enable VisualVM color scheme for threads dumps: ---
// stackElHref = " <a style=\"color: #CC3300;\"
// href=\""+stackUrl+"\">"+stackElement+"</a>"; // NOI18N
stackElHref =
"<a href=\"" + stackUrl + "\">" + stackElementText + "</a>"; // NOI18N
// -------------------------------------------------------------------
} else {
stackElHref = stackElementText;
}
sb.append("\tat ").append(stackElHref).append("<br>"); // NOI18N
if (localsMap != null) {
List<JavaFrameGCRoot> locals = localsMap.get(Integer.valueOf(i));
if (locals != null) {
for (JavaFrameGCRoot localVar : locals) {
Instance localInstance = localVar.getInstance();
if (localInstance != null) {
sb.append("\t Local Variable: ")
.append(printInstance(localInstance))
.append("<br>"); // NOI18N
} else {
sb.append(
"\t Unknown Local Variable<br>"); // NOI18N
}
}
}
}
}
}
} else {
sb.append(" Unknown thread"); // NOI18N
}
sb.append("<br>"); // NOI18N
}
}
sb.append("</pre>"); // NOI18N
stackTrace = sb.toString();
}
return stackTrace;
}
