/** Show the current stacktrace using Screen.debug. */
@KernelSpace
public final void debugStackTrace(int max) {
Address f = VmMagic.getCurrentFrame();
Unsafe.debug("\nDebug stacktrace: ");
boolean first = true;
while (isValid(f) && (max > 0)) {
if (first) {
first = false;
} else {
Unsafe.debug(", ");
}
final VmMethod method = getMethod(f);
final VmType<?> vmClass = method.getDeclaringClass();
Unsafe.debug(vmClass.getName());
Unsafe.debug("::");
Unsafe.debug(method.getName());
Unsafe.debug('\n');
f = getPrevious(f);
max--;
}
if (isValid(f)) {
Unsafe.debug("...");
}
}
/**
* Process the input from the kernel debugger.
*
* @param input
* @throws org.vmmagic.pragma.UninterruptiblePragma
*/
@Uninterruptible
@KernelSpace
private final void processKdbInput(int input) {
switch ((char) input) {
case '?':
case 'h':
debug("Commands:\n");
debug("l Show Load/Compile queue\n");
debug("p Ping\n");
debug("q Print thread queues\n");
debug("r Print stacktraces of ready-queue\n");
debug("t Print current thread\n");
debug("v Verify thread\n");
debug("w Print waiting threads\n");
debug("W Print stacktraces of waiting threads\n");
break;
case 'l':
debug("<load-compile-service: ");
debug("\n");
LoadCompileService.showInfo();
debug("/>\n");
break;
case 'p':
debug("<ping/>");
break;
case 'q':
{
final VmThread currentThread = VmMagic.currentProcessor().currentThread;
debug("<queues: current-thread name='");
debug(currentThread.getName());
debug("' state='");
debug(currentThread.getThreadStateName());
debug("\n");
vmScheduler.getReadyQueue().dump(false, null);
vmScheduler.getSleepQueue().dump(false, null);
debug("/>\n");
break;
}
case 'r':
debug("<traces: ");
debug("\n");
vmScheduler.getReadyQueue().dump(true, vmScheduler.getStackReader());
debug("/>\n");
break;
case 'v':
debug("<verify: ");
debug("\n");
verifyThreads();
debug("/>\n");
break;
case 'w':
debug("<waiting: ");
debug("\n");
dumpWaitingThreads(false, null);
debug("/>\n");
break;
case 'W':
debug("<waiting: ");
debug("\n");
dumpWaitingThreads(true, vmScheduler.getStackReader());
debug("/>\n");
break;
case 't':
{
final VmThread currentThread = VmMagic.currentProcessor().currentThread;
debug("<currentthread name='");
debug(currentThread.getName());
debug("' state='");
debug(currentThread.getThreadStateName());
debug("'/>\n");
break;
}
case 'T':
{
final VmThread currentThread = VmMagic.currentProcessor().currentThread;
debug("<currentthread name='");
debug(currentThread.getName());
debug("' state='");
debug(currentThread.getThreadStateName());
vmScheduler.getStackReader().debugStackTrace(currentThread);
debug("'/>\n");
break;
}
case '#':
debug("Halt for ever\n");
while (true) ;
// default:
// debug(input);
}
}