private int printThreadGroup(OutputSink out, ThreadGroupReference tg, int iThread) {
out.println("Group " + tg.name() + ":");
List<ThreadReference> tlist = tg.threads();
int maxId = 0;
int maxName = 0;
for (int i = 0; i < tlist.size(); i++) {
ThreadReference thr = tlist.get(i);
int len = Utils.description(thr).length();
if (len > maxId) {
maxId = len;
}
String name = thr.name();
int iDot = name.lastIndexOf('.');
if (iDot >= 0 && name.length() > iDot) {
name = name.substring(iDot + 1);
}
if (name.length() > maxName) {
maxName = name.length();
}
}
String maxNumString = String.valueOf(iThread + tlist.size());
int maxNumDigits = maxNumString.length();
for (int i = 0; i < tlist.size(); i++) {
ThreadReference thr = tlist.get(i);
char buf[] = new char[80];
for (int j = 0; j < 79; j++) {
buf[j] = ' ';
}
buf[79] = '\0';
StringBuffer sbOut = new StringBuffer();
sbOut.append(buf);
// Right-justify the thread number at start of output string
String numString = String.valueOf(iThread + i + 1);
sbOut.insert(maxNumDigits - numString.length(), numString);
sbOut.insert(maxNumDigits, ".");
int iBuf = maxNumDigits + 2;
sbOut.insert(iBuf, Utils.description(thr));
iBuf += maxId + 1;
String name = thr.name();
int iDot = name.lastIndexOf('.');
if (iDot >= 0 && name.length() > iDot) {
name = name.substring(iDot + 1);
}
sbOut.insert(iBuf, name);
iBuf += maxName + 1;
sbOut.insert(iBuf, Utils.getStatus(thr));
sbOut.setLength(79);
out.println(sbOut.toString());
}
for (ThreadGroupReference tg0 : tg.threadGroups()) {
if (!tg.equals(tg0)) { // TODO ref mgt
iThread += printThreadGroup(out, tg0, iThread + tlist.size());
}
}
return tlist.size();
}
private void commandMethods(StringTokenizer t) throws NoSessionException {
if (!t.hasMoreTokens()) {
env.error("No class specified.");
return;
}
String idClass = t.nextToken();
ReferenceType cls = findClass(idClass);
if (cls != null) {
List<Method> methods = cls.allMethods();
OutputSink out = env.getOutputSink();
for (int i = 0; i < methods.size(); i++) {
Method method = methods.get(i);
out.print(method.declaringType().name() + " " + method.name() + "(");
Iterator<String> it = method.argumentTypeNames().iterator();
if (it.hasNext()) {
while (true) {
out.print(it.next());
if (!it.hasNext()) {
break;
}
out.print(", ");
}
}
out.println(")");
}
out.show();
} else {
// ### Should validate class name syntax.
env.failure("\"" + idClass + "\" is not a valid id or class name.");
}
}
private ReferenceType findClass(String pattern) throws NoSessionException {
List<ReferenceType> results = runtime.findClassesMatchingPattern(pattern);
if (results.size() > 0) {
// ### Should handle multiple results sensibly.
return results.get(0);
}
return null;
}
private void dumpStack(ThreadReference thread, boolean showPC) {
// ### Check for these.
// env.failure("Thread no longer exists.");
// env.failure("Target VM must be in interrupted state.");
// env.failure("Current thread isn't suspended.");
// ### Should handle extremely long stack traces sensibly for user.
List<StackFrame> stack = null;
try {
stack = thread.frames();
} catch (IncompatibleThreadStateException e) {
env.failure("Thread is not suspended.");
}
// ### Fix this!
// ### Previously mishandled cases where thread was not current.
// ### Now, prints all of the stack regardless of current frame.
int frameIndex = 0;
// int frameIndex = context.getCurrentFrameIndex();
if (stack == null) {
env.failure("Thread is not running (no stack).");
} else {
OutputSink out = env.getOutputSink();
int nFrames = stack.size();
for (int i = frameIndex; i < nFrames; i++) {
StackFrame frame = stack.get(i);
Location loc = frame.location();
Method meth = loc.method();
out.print(" [" + (i + 1) + "] ");
out.print(meth.declaringType().name());
out.print('.');
out.print(meth.name());
out.print(" (");
if (meth.isNative()) {
out.print("native method");
} else if (loc.lineNumber() != -1) {
try {
out.print(loc.sourceName());
} catch (AbsentInformationException e) {
out.print("<unknown>");
}
out.print(':');
out.print(loc.lineNumber());
}
out.print(')');
if (showPC) {
long pc = loc.codeIndex();
if (pc != -1) {
out.print(", pc = " + pc);
}
}
out.println();
}
out.show();
}
}
private void commandList(StringTokenizer t) throws NoSessionException {
ThreadReference current = context.getCurrentThread();
if (current == null) {
env.error("No thread specified.");
return;
}
Location loc;
try {
StackFrame frame = context.getCurrentFrame(current);
if (frame == null) {
env.failure("Thread has not yet begun execution.");
return;
}
loc = frame.location();
} catch (VMNotInterruptedException e) {
env.failure("Target VM must be in interrupted state.");
return;
}
SourceModel source = sourceManager.sourceForLocation(loc);
if (source == null) {
if (loc.method().isNative()) {
env.failure("Current method is native.");
return;
}
env.failure("No source available for " + Utils.locationString(loc) + ".");
return;
}
ReferenceType refType = loc.declaringType();
int lineno = loc.lineNumber();
if (t.hasMoreTokens()) {
String id = t.nextToken();
// See if token is a line number.
try {
lineno = Integer.valueOf(id).intValue();
} catch (NumberFormatException nfe) {
// It isn't -- see if it's a method name.
List<Method> meths = refType.methodsByName(id);
if (meths == null || meths.size() == 0) {
env.failure(
id + " is not a valid line number or " + "method name for class " + refType.name());
return;
} else if (meths.size() > 1) {
env.failure(id + " is an ambiguous method name in" + refType.name());
return;
}
loc = meths.get(0).location();
lineno = loc.lineNumber();
}
}
int startLine = (lineno > 4) ? lineno - 4 : 1;
int endLine = startLine + 9;
String sourceLine = source.sourceLine(lineno);
if (sourceLine == null) {
env.failure("" + lineno + " is an invalid line number for " + refType.name());
} else {
OutputSink out = env.getOutputSink();
for (int i = startLine; i <= endLine; i++) {
sourceLine = source.sourceLine(i);
if (sourceLine == null) {
break;
}
out.print(i);
out.print("\t");
if (i == lineno) {
out.print("=> ");
} else {
out.print(" ");
}
out.println(sourceLine);
}
out.show();
}
}
