@Override
public void terminateProcess(ThreadInfo ti) {
SystemState ss = getSystemState();
ThreadInfo[] liveThreads = getLiveThreads();
ThreadInfo finalizerTi = null;
for (int i = 0; i < liveThreads.length; i++) {
if (!liveThreads[i].isSystemThread()) {
// keep the stack frames around, so that we can inspect the snapshot
liveThreads[i].setTerminated();
} else {
// FinalizerThread is not killed at this point. We need to keep it around in
// case fianlizable objects are GCed after System.exit() returns.
finalizerTi = liveThreads[i];
}
}
ss.setMandatoryNextChoiceGenerator(
new BreakGenerator("exit", ti, true), "exit without break CG");
// if there is a finalizer thread, we have to run the last GC, to queue finalizable objects, if
// any
if (finalizerTi != null) {
assert finalizerTi.isAlive();
activateGC();
}
}
@Override
public boolean isDeadlocked() {
boolean hasNonDaemons = false;
boolean hasBlockedThreads = false;
if (ss.isBlockedInAtomicSection()) {
return true; // blocked in atomic section
}
ThreadInfo[] threads = getThreadList().getThreads();
boolean hasUserThreads = false;
for (int i = 0; i < threads.length; i++) {
ThreadInfo ti = threads[i];
if (ti.isAlive()) {
hasNonDaemons |= !ti.isDaemon();
// shortcut - if there is at least one runnable, we are not deadlocked
if (ti.isTimeoutRunnable()) { // willBeRunnable() ?
return false;
}
if (!ti.isSystemThread()) {
hasUserThreads = true;
}
// means it is not NEW or TERMINATED, i.e. live & blocked
hasBlockedThreads = true;
}
}
boolean isDeadlock = hasNonDaemons && hasBlockedThreads;
if (processFinalizers && isDeadlock && !hasUserThreads) {
// all threads are blocked, system threads. If the finalizer thread
// is in-use, then this is a deadlocked state.
return (!getFinalizerThread().isIdle());
}
return isDeadlock;
}