On Jul 18, 3:41 am, Benjamin <musiccomposit...@gmail.comwrote:
I'm writing a search engine in Python with wxPython as the GUI. I have
the actual searching preformed on a different thread from Gui thread.
It sends it's results through a Queue to the results ListCtrl which
adds a new item. This works fine or small searches, but when the
results number in the hundreds, the GUI is frozen for the duration of
the search. I suspect that so many search results are coming in that
the GUI thread is too busy updating lists to respond to events. I've
tried buffer the results so there's 20 results before they're sent to
the GUI thread and buffer them so the results are sent every .1
seconds. Nothing helps. Any advice would be great.
I do something similar - populating a bunch of comboboxes from data
takes a long time so I run the generator for the comboboxes in another
thread (and let the user use some textboxes in the mean time). A
rough edit toward what you might be doing:
import thread
class Processor(object):
def __init__(self):
self.lock = thread.allocate_lock()
self.alive = False
self.keepalive = False
def start(self):
if not self.alive:
self.alive = True
self.keepalive = True
thread.start_new_thread(self.Process, (None,))
def stop(self):
self.keepalive = False
def process(self, dummy=None):
self.alive = False
class SearchProcessor(Processor):
def __init__(self, entries, lookfor, report):
Processor.__init__(self)
self.entries = entries
self.lookfor = lookfor
self.report = report
def process(self, dummy=None):
for entry in self.entries:
if lookfor in entry:
self.report(entry)
if not self.keepalive:
break
self.report(None)
self.alive = False
results = []
def storeResult(result):
if result != None:
results.append(result)
else:
notifySomeMethod(results)
sp = SearchProcessor(someListOfData, someTextToSearchFor, storeResult)
sp.start()
when the search is done it will call notifySomeMethod with the
results. Meanwhile you could, for example, bind sp.stop() to a cancel
button to stop the thread, or add a counter to the storeResult
function and set a status bar to the total found, or whatever else you
want to do.
Iain
