python - Using gobject.timeout_add_seconds - Segmentation Fault -

-

i writing gui program allows user repeatedly send message phone number configurable delay , number of repetitions.

i used qt designer create gui, , trying create code behind it. trying make program start sending messages when start button pressed, not freeze gui.

i trying use gobject.timeout_add_seconds check if new messages need send every 1s, when causing segmentation fault.

queuemessages called whenever button pressed start sending messages, , sendmessages should run every 1s send needed messages.

let me know if there easier way (such threading). open other ideas.

here's applicable code. can include gui code if helpful:

#!/usr/bin/python2.5 import sys, os import time import gobject pyqt4 import qtgui,qtcore smsbomb import *  class myform(qtgui.qmainwindow):     def __init__(self, parent=none):         #build parent user interface         qtgui.qwidget.__init__(self, parent)         self.ui = ui_mainwindow()         self.ui.setupui(self)         # create button actions         qtcore.qobject.connect(self.ui.btnsendmessages, qtcore.signal('clicked()'), self.queuemessages)         # check if need send messages every 1s.         self.maintimer = gobject.timeout_add_seconds(1, self.sendmessages)      def queuemessages(self):         # queue messages!         number = str(self.ui.txtnumber.text())         message = str(self.ui.txtmessage.text())         delay = int(self.ui.txtdelay.text())         repetitions = int(self.ui.txtrepetitions.text())         in range(repetitions):             os.system('dbus-send --dest=org.qgvdial.textserver --session --print-reply /org/qgvdial/textserver org.qgvdial.textserver.text array:string:"+1' + number + '" string:"' + message + '"')             #time.sleep(delay)      def sendmessages(self):         # send queued messages needed         print "sending queued messages..."         return true  if __name__ == "__main__":     app = qtgui.qapplication(sys.argv)     myapp = myform()     myapp.show()     sys.exit(app.exec_())

you appear using (py)gtk timer object within (py)qt application. try replacing

    self.maintimer = gobject.timeout_add_seconds(1, self.sendmessages)

with equivalent pyqt code

    self.maintimer = qtcore.qtimer(self);     self.connect(self.maintimer, qtcore.signal('timeout()'), self.sendmessages)     self.maintimer.start(1000)

i able reproduce segfault using gobject.timeout_add_seconds, , went away once replaced pygtk timer pyqt one. can't sure why happens, this article gives possible reason:

one caveat found, gobject.timeout_add_seconds() seems depend on gtk main loop, cannot use regular non-gtk python application.


Comments

Post a Comment

Popular posts from this blog

javascript - Enclosure Memory Copies -

-
function myclass() { //lots , lots of vars , code here. this.bar = function() { //do numerous enclosed myclass vars } this.foo = function() { alert('hello'); //don't enclosed variables. } } each instance of myclass gets own copy of bar , foo, why prototyped methods use less memory. however, know more memory use of inner methods. it seems obvious me (1) below must true. agree? not distinct myclass instances have own distinct copies of bar, must have own distinct copies of myclass enclosure. (or else how bar method keep myclass variables straight on per instance basis?) now (2) question i'm after. since inner foo method doesn't use in myclass enclosure natural qustion is: javascript smart enough not keep myclass enclosure in memory use of foo? this depend entirely on implementation not language. naive implementations keep far more around others. answer true e.g. v8 (chrome's js engine) may not true spider...
Read more

php - Replacing tags in braces, even nested tags, with regex -

-
example preg_replace('/\{[a-za-z.,\(\)0-9]+\}/', 'replaced', 'lorem ipsum dolor sit {tag1({tag2()})}, consectetur adipiscing elit.'); the result: lorem ipsum dolor sit {tag1(replaced)}, consectetur adipiscing elit. question as can see "tag2" has been replaced, want replace "tag1" know how can this? (in cases might this: {tag1({tag2({tag3()})})}) , on.) btw using preg_replace_callback, easier show preg_replace here site can test code: http://www.spaweditor.com/scripts/regex/index.php you need add curly braces character set. here's pattern used: /\{[a-za-z.,\(\)\{\}0-9]+\}/ and here result: "lorem ipsum dolor sit replaced, consectetur adipiscing elit."
Read more