473,698 Members | 2,932 Online
Bytes | Software Development & Data Engineering Community
+ Post

Home Posts Topics Members FAQ

pythoncom: STA python COM server randomly does not receive event from other objects : deadlock

Hi all,

I coded a python COM object that runs in a pythonw local server as a
STA.

This object creates and advises a VC++ COM object to receive its
event. Those events are sent by worker threads.

The VC++ object is free threaded. As a consequence call between my STA
python object and apartment are marshalled through proxy.

The python COM object regularly calls a blocking method on the VC++
object to synchronize. But, as it is a cross apartment call, during
the call it can gets the event handler called thanks to the message
pump operated by COM.

But sometimes events are no received and it seems that I enter a
deadlock.
When I attach to the VC+ object, I can see that the thread that made
the Fire_XX is still waiting for the call to end.

Does somedy know the reason?

Does the COM message pump may be different from the pythoncom message
pump located in localserver.py : pythoncom.PumpM essages ?

Thanks in advance for any hint, because this is a very blocking issue
for my project.

Marc
Jul 18 '05 #1
0 1453

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

3
12317
by: Paul | last post by:
Hi I'm trying to build a standalone COM exe server using Python 2.2 + Mark Hammond's windows extensions + Py2Exe. I've built the example linked on the Py2Exe homepage and get this error when running the exe: I:\Program Files\Python22\dist\comtest>comtest --register Traceback (most recent call last): File "<string>", line 37, in ? File "win32com\server\register.pyc", line 468, in UseCommandLine
0
2348
by: gloom | last post by:
Hey, I'm programming something with NeroSDK COM module, and I bumped into a problem: why doesn't python releases and uninitializes COM objects that are no longer referenced? Here is a sample code: # start of sample code from win32com.client import *
8
4594
by: Joakim Persson | last post by:
Hello all. I am involved in a project where we have a desire to improve our software testing tools, and I'm in charge of looking for solutions regarding the logging of our software (originating from embedded devices). Currently, we are using a heavyweight, proprietary log tool developed by another part of the company. This tool contains all "standard" logging functionality, but we also need to insert "debug" log points in the software of...
9
2031
by: corey.coughlin | last post by:
Alright, so I've been following some of the arguments about enhancing parallelism in python, and I've kind of been struck by how hard things still are. It seems like what we really need is a more pythonic approach. One thing I've been seeing suggested a lot lately is that running jobs in separate processes, to make it easy to use the latest multiprocessor machines. Makes a lot of sense to me, those processors are going to be more and...
1
3733
by: fraca7 | last post by:
Hello. I got a little problem while using pythoncom to automate IE; for some reason, changing the 'selectedIndex' on an instance of IHTMLSelectElement doesn't fire the 'onchange' event (I guess this is a bug in mshtml). So, I tried to get the 'onchange' event handler and call it myself. According to the docs, this is a simple IDispatch implementation and calling Invoke() should do the trick; I actually have a working example of this in...
112
13812
by: mystilleef | last post by:
Hello, What is the Pythonic way of implementing getters and setters. I've heard people say the use of accessors is not Pythonic. But why? And what is the alternative? I refrain from using them because they smell "Javaish." But now my code base is expanding and I'm beginning to appreciate the wisdom behind them. I welcome example code and illustrations.
2
6956
by: Jobs | last post by:
Download the JAVA , .NET and SQL Server interview with answers Download the JAVA , .NET and SQL Server interview sheet and rate yourself. This will help you judge yourself are you really worth of attending interviews. If you own a company best way to judge if the candidate is worth of it. http://www.questpond.com/InterviewRatingSheet.zip
0
1712
by: Gabriel Genellina | last post by:
En Wed, 27 Aug 2008 21:17:22 -0300, Vistro <vistro@vistro.netescribi�: Reinstalling the pywin32 package should fix that, I presume. In fact that __import_whatever function does a rather complex task, it must ensure that the *right* pywintypes25.dll (or pythoncom25.dll) is loaded, even when it's implicitely loaded.
0
8683
marktang
by: marktang | last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look ! Part I. Meaning of...
0
8611
by: Hystou | last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it. First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
0
9031
jinu1996
by: jinu1996 | last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth. The Art of Business Website Design Your website is...
1
8904
by: Hystou | last post by:
Overview: Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
0
7741
agi2029
by: agi2029 | last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own.... Now, this would greatly impact the work of software developers. The idea...
1
6531
isladogs
by: isladogs | last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM). In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules. He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms. Adolph will...
0
4372
by: TSSRALBI | last post by:
Hello I'm a network technician in training and I need your help. I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs. The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols. I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
1
3052
by: 6302768590 | last post by:
Hai team i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
3
2007
bsmnconsultancy
by: bsmnconsultancy | last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.