Hello Phil.
I was impressed with the python coroutines idea and wrote small
implementation for the PyQt: http://github.com/ddosoff/pyqtcoroutines
Nonpreemptive multithreading programs looks synchronous:
from pyqtcoroutines.coroutines import Scheduler
# coroutine example
def inserter( a_lot_of_records ):
try:
for record in a_lot_of_records:
# do small piece of work here
... insert one record to the sql database ...
# This is execution trap
#
# Unlike QCoreApplication.processEvents()
# we do not call new restricted event loop,
# we will NORMALLY RETURN to the main qt event loop!
yield
except:
# handle all exceptions in synchronous manner
...
# create scheduler to execute our inserter(..) later
s = Scheduler()
# It's not the inserter() call!
# We construct the built-in python Generator object!
#
# Execution will start after the first
# coroutine.send( None ) call inside the Scheduler.
coroutine = inserter( a_lot_of_records )
# Let the Scheduler to start execution of
# inserter(..) later inside the main qt event loop.
s.newTask( coroutine )
Full example : http://github.com/ddosoff/pyqtcoroutines
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