PySide Bug Investigation: Producer/Consumer threading

diff --git a/hand_tests/threading.py b/hand_tests/threading.py
new file mode 100755 (executable)
index 0000000..d4f9c91
--- /dev/null
+++ b/hand_tests/threading.py
@@ -0,0 +1,99 @@
+#!/usr/bin/env python
+
+from __future__ import with_statement
+from __future__ import division
+
+import time
+
+import PyQt4.QtCore as QtCore
+
+
+class QThread44(QtCore.QThread):
+       """
+       This is to imitate QThread in Qt 4.4+ for when running on older version
+       See http://labs.trolltech.com/blogs/2010/06/17/youre-doing-it-wrong
+       (On Lucid I have Qt 4.7 and this is still an issue)
+       """
+
+       def __init__(self, parent = None):
+               QtCore.QThread.__init__(self, parent)
+
+       def run(self):
+               self.exec_()
+
+
+class Producer(QtCore.QObject):
+
+       data = QtCore.pyqtSignal(int)
+       done = QtCore.pyqtSignal()
+
+       def __init__(self):
+               QtCore.QObject.__init__(self)
+
+       @QtCore.pyqtSlot()
+       def process(self):
+               print "Starting producer"
+               for i in xrange(10):
+                       self.data.emit(i)
+                       time.sleep(0.1)
+               self.done.emit()
+
+
+class Consumer(QtCore.QObject):
+
+       def __init__(self):
+               QtCore.QObject.__init__(self)
+
+       @QtCore.pyqtSlot()
+       def process(self):
+               print "Starting consumer"
+
+       @QtCore.pyqtSlot()
+       def print_done(self):
+               print "Done"
+
+       @QtCore.pyqtSlot(int)
+       def print_data(self, i):
+               print i
+
+
+if __name__ == "__main__":
+       app = QtCore.QCoreApplication([])
+
+       producerThread = QThread44()
+       producer = Producer()
+       producer.moveToThread(producerThread)
+       producerThread.started.connect(producer.process)
+
+       consumerThread = QThread44()
+       consumer = Consumer()
+       consumer.moveToThread(consumerThread)
+       consumerThread.started.connect(consumer.process)
+
+       producer.data.connect(consumer.print_data)
+       producer.done.connect(consumer.print_done)
+
+       @QtCore.pyqtSlot()
+       def producer_done():
+               print "Shutting down"
+               producerThread.quit()
+               consumerThread.quit()
+               print "Done"
+       producer.done.connect(producer_done)
+
+       count = [0]
+
+       @QtCore.pyqtSlot()
+       def thread_done():
+               print "Thread done"
+               count[0] += 1
+               if count[0] == 2:
+                       print "Quitting"
+                       app.exit(0)
+               print "Done"
+       producerThread.finished.connect(thread_done)
+       consumerThread.finished.connect(thread_done)
+
+       producerThread.start()
+       consumerThread.start()
+       print "Status", app.exec_()