Thread deadlock inside CString::AllocB uffer and sudden crashes

I have an application that uses Postgres 7.2.3. It appears to deadlock fromtime to time. I'm not absolutely sure that it deadlocks, but I'm pretty sure because all of a sudden all my updates block, and my postgres processes are all idle. The strange thing is that my application never concurrently modifies any row (although it does modify multiple rows in the same table within a given transaction), so I don't know how this could happen, unless...

Hi everybody! VS.NET 2003 C++ MFC-SDI-Standard project. I would like to show some current info in the status bar of the SDI-Window. As long as I use the following code CStatusBar* pStatus = (CStatusBar*)AfxGetApp()->m_pMainWnd->GetDescendantWindow(AFX_IDW_STATUS_BAR);

I am trying to send a message from a visual c++ user-thread to the main window, so the main window can update text on the window to reflect what the user-thread is doing. I have tried 2 different approaches, and both fail. I don't know what to try next. +++++++++++++++++++++++++++++++++++++++++++++++++++++ APPROACH #1: (this approach makes the most sence to me) Configure the first parameter of the thread's PostMessage() to talk to the...

I am new to threading and trying to figure some things out. Are all variables in a thread set to only that thread? Meaning if I create 2 instances of a class and then put each one in a different thread and run them will the local variables in functions be shared or will they be thread safe?

I get python crashes and (in better cases) strange Python exceptions when (in most cases) importing and using cookielib lazy on demand in a thread. It is mainly with cookielib, but remember the problem also with other imports (e.g. urllib2 etc.). And again very often in all these cases where I get weired Python exceptions, the problem is around re-functions - usually during re.compile calls during import (see some of the exceptions below). But...

Jochen Kalmbach wrote: Thank you for your reply. Yes we do. Could you please elaborate. Are you referring to the CString::AllocBuffer related hangs or sudden crashes --

Hi, I've recently been working on an application which does quite a bit of searching through large data structures and string matching, and I was thinking that it would help to put some of this CPU-intensive work in another thread, but of course this won't work because of Python's GIL. There's a lot of past discussion on this, and I want to bring it up again because with the work on Python 3000, I think it is worth trying

Hi, In multi-thread programming, if I using smart pointers to store pointers to the same dynamically allocated objects, can memory leak be avoided? For example, two threads share the same dynamically allocated objects using smart pointer. The reference to the shared object is 2. If one thread crashes before decreasing the reference, then eventually the reference will still be 1, so the object will not be deleted. So this

What am I doing wrong? I'm trying to capture stdErr in a multi-threaded program. This code crashes wxPython with /Py Assertion Error: C++ assertion "m_count=-1 || m_count=-2" failed/ What I'm trying to do is redirect stderr and stdout to a wxPython text control. In an ideal world, when the worker thread crashes, I should get a stderr message, with no effect on the main thread.

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...

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Dear forum friends, With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...

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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...

I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one. At the time of converting from word file to html my equations which are in the word document file was convert into image. Globals.ThisAddIn.Application.ActiveDocument.Select();...

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...

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