@TestOnly
public static void dispatchAllInvocationEventsInIdeEventQueue() throws InterruptedException {
assert SwingUtilities.isEventDispatchThread() : Thread.currentThread();
final EventQueue eventQueue = Toolkit.getDefaultToolkit().getSystemEventQueue();
while (true) {
AWTEvent event = eventQueue.peekEvent();
if (event == null) break;
AWTEvent event1 = eventQueue.getNextEvent();
if (event1 instanceof InvocationEvent) {
IdeEventQueue.getInstance().dispatchEvent(event1);
}
}
}
/**
* Returns the next event in the queue that has the specified id without removing it from the
* queue. This method will block until an event is available or until the thread is interrupted.
*
* @param id The event id to return.
* @return The next event in the queue.
* @specnote Does not block. Returns null if there are no matching events on the queue.
*/
public synchronized AWTEvent peekEvent(int id) {
if (next != null) return next.peekEvent(id);
AWTEvent evt = null;
for (int i = 0; i < queues.length && evt == null; i++) {
Queue q = queues[i];
evt = q.queueHead;
while (evt != null && evt.id != id) evt = evt.queueNext;
// At this point we either have found an event (evt != null -> exit
// for loop), or we have found no event (evt == null -> search next
// internal queue).
}
return evt;
}
/**
* Invokes the {@code callable} on the main MATLAB thread and waits for the computation to be
* completed.
*
* @param <T>
* @param callable
* @return
* @throws MatlabInvocationException
*/
static <T> T invokeAndWait(final MatlabThreadCallable<T> callable)
throws MatlabInvocationException {
T result;
if (NativeMatlab.nativeIsMatlabThread()) {
try {
result = callable.call(THREAD_OPERATIONS);
} catch (RuntimeException e) {
ThrowableWrapper cause = new ThrowableWrapper(e);
throw MatlabInvocationException.Reason.RUNTIME_EXCEPTION.asException(cause);
}
} else if (EventQueue.isDispatchThread()) {
final AtomicReference<MatlabReturn<T>> returnRef = new AtomicReference<MatlabReturn<T>>();
Matlab.whenMatlabIdle(
new Runnable() {
@Override
public void run() {
MatlabReturn<T> matlabReturn;
try {
matlabReturn = new MatlabReturn<T>(callable.call(THREAD_OPERATIONS));
} catch (MatlabInvocationException e) {
matlabReturn = new MatlabReturn<T>(e);
} catch (RuntimeException e) {
ThrowableWrapper cause = new ThrowableWrapper(e);
MatlabInvocationException userCausedException =
MatlabInvocationException.Reason.RUNTIME_EXCEPTION.asException(cause);
matlabReturn = new MatlabReturn<T>(userCausedException);
}
returnRef.set(matlabReturn);
}
});
// Pump event queue while waiting for MATLAB to complete the computation
try {
while (returnRef.get() == null) {
if (EVENT_QUEUE.peekEvent() != null) {
EVENT_QUEUE_DISPATCH_METHOD.invoke(EVENT_QUEUE, EVENT_QUEUE.getNextEvent());
}
}
} catch (InterruptedException e) {
throw MatlabInvocationException.Reason.EVENT_DISPATCH_THREAD.asException(e);
} catch (IllegalAccessException e) {
throw MatlabInvocationException.Reason.EVENT_DISPATCH_THREAD.asException(e);
} catch (InvocationTargetException e) {
throw MatlabInvocationException.Reason.EVENT_DISPATCH_THREAD.asException(e);
}
// Process return
MatlabReturn<T> matlabReturn = returnRef.get();
// If exception was thrown, rethrow it
if (matlabReturn.exception != null) {
throw matlabReturn.exception;
}
// Return data computed by MATLAB
else {
result = matlabReturn.data;
}
} else {
// Used to block the calling thread while waiting for MATLAB to finish computing
final ArrayBlockingQueue<MatlabReturn<T>> returnQueue =
new ArrayBlockingQueue<MatlabReturn<T>>(1);
Matlab.whenMatlabIdle(
new Runnable() {
@Override
public void run() {
MatlabReturn<T> matlabReturn;
try {
matlabReturn = new MatlabReturn<T>(callable.call(THREAD_OPERATIONS));
} catch (MatlabInvocationException e) {
matlabReturn = new MatlabReturn<T>(e);
} catch (RuntimeException e) {
ThrowableWrapper cause = new ThrowableWrapper(e);
MatlabInvocationException userCausedException =
MatlabInvocationException.Reason.RUNTIME_EXCEPTION.asException(cause);
matlabReturn = new MatlabReturn<T>(userCausedException);
}
returnQueue.add(matlabReturn);
}
});
try {
// Wait for MATLAB's main thread to finish computation
MatlabReturn<T> matlabReturn = returnQueue.take();
// If exception was thrown, rethrow it
if (matlabReturn.exception != null) {
throw matlabReturn.exception;
}
// Return data computed by MATLAB
else {
result = matlabReturn.data;
}
} catch (InterruptedException e) {
throw MatlabInvocationException.Reason.INTERRRUPTED.asException(e);
}
}
return result;
}
/**
* Returns the next event in the queue without removing it from the queue. This method will block
* until an event is available or until the thread is interrupted.
*
* @return The next event in the queue.
* @specnote Does not block. Returns null if there are no events on the queue.
*/
public synchronized AWTEvent peekEvent() {
if (next != null) return next.peekEvent();
return getNextEventImpl(false);
}
