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  • embedded dev. question - how to break free from a faulty serial port opening?

    - by user347266
    Under WindowsCE, C++ project, I'm trying to work with devices connected via both "real" serial ports and/or serial-to-usb wrappers ("virtual" serial ports); my problem is - when I try to open the port, if something goes wrong, the function never returns and the system goes into some non-responsive state and has to be eventually rebooted. I need to open the ports from the main thread. The question is - how can I make it happen in a controlled way?? this is the opening code snippet: std::ostringstream device_name; device_name << "\\.\COM" << port; m_port = ::CreateFile(device_name.str().c_str(), GENERIC_READ | GENERIC_WRITE, 0, // exclusive access NULL, // no security OPEN_EXISTING, FILE_FLAG_OVERLAPPED, // overlapped I/O NULL); // null template any suggestions would be greatly appreciated thanks!

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  • Is there a free tool which can help visualize the logic of a stored procedure in SQL Server 2008 R2?

    - by Hamish Grubijan
    I would like to be able to plot a call graph of a stored procedure. I am not interested in every detail, and I am not concerned with dynamic SQL (although it would be cool to detect it and skip it maybe or mark it as such.) I would like the tool to generate a tree for me, given the server name, db name, stored proc name, a "call tree", which includes: Parent stored procedure. Every other stored procedure that is being called as a child of the caller. Every table that is being modified (updated or deleted from) as a child of the stored proc which does it. Hopefully it is clear what I am after; if not - please do ask. If there is not a tool that can do this, then I would like to try to write one myself. Python 2.6 is my language of choice, and I would like to use standard libraries as much as possible. Any suggestions? EDIT: For the purposes of bounty Warning: SQL syntax is COMPLEX. I need something that can parse all kinds of SQL 2008, even if it looks stupid. No corner cases barred :) EDIT2: I would be OK if all I am missing is graphics.

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  • Is there a good free (prefrerably PDF) bash tutorial online?

    - by morpheous
    I am finding myself doing a lot more messing around with scripts than I used to and my lack of knowledge in this area (and linux sysadmin/security in general), is becoming a hindrance. Can anyone recommend a good online resource for bash scripting/linux admin. Preferably, it will be in pdf format, so I can copy it (single file) onto my PDA.

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  • Is there an free (or cheap) issue tracking software that allow you hide some issues to some member g

    - by Andrea Francia
    I need a Issue Tracking System that allow me to share information on a selective manner. I would be able to define these groups: supplier (my company) subcontractors customer Then, I would be able to define three type of permissions for issues: Issue that can be viewed only by supplier Issue that can be viewed only by supplier and subcontractors Issue that can be viewed by all (supplier, subcontractors, customer) I tried redmine but I didn't find a way of hide some issues, they are always visible. There is an open issue and a patch for that but I not sure if it suit well for my situation. With this patch you need always to remember to make it private and there is only a level of permission: private or not. I need something more flexible. EDIT: I need a software that works on Fedora Linux.

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  • What to check to see if server has enough free resources?

    - by kyrisu
    The windows service I am writing will need to run some processor intensive operations once in a while (sound encoding wav - mp3) on a machine that takes part in real time voice communication (so I cannot just run them any-time). What would you check (what counters maybe) before running such operation? Can you point me to any good articles?

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  • How can I parse free text (Twitter tweets) against a large database of values?

    - by user136416
    Hi there Suppose I have a database containing 500,000 records, each representing, say, an animal. What would be the best approach for parsing 140 character tweets to identify matching records by animal name? For instance, in this string... "I went down to the woods to day and couldn't believe my eyes: I saw a bear having a picnic with a squirrel." ... I would like to flag up the words "bear" and "squirrel", as they appear in my database. This strikes me as a problem that has probably been solved many times, but from where I'm sitting it looks prohibitively intensive - iterating over every db record checking for a match in the string is surely a crazy way to do it. Can anyone with a comp sci degree put me out of my misery? I'm working in C# if that makes any difference. Cheers!

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  • How to get just free heap size (not together w stack/method mem) in Java?

    - by Pentium10
    I want to calculate the heap usage for my app. I would like to get a procent value of Heap size only. How do I get the value in code for the current running app? EDIT The upvoted answer is NOT complete/correct. The values returned by those methods include stack and method area too, and I need to monitor only heap size. With that code I got HeapError exception when I reached 43%, so I can't use those methods to monitor just heap.

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  • WebBrowser Control in ATL window. How to free up memory on window unload? I'm stuck.

    - by Martin
    Hello there. I have a Win32 C++ Application. There is the _tWinMain(...) Method with GetMessage(...) in a while loop at the end. Before GetMessage(...) I create the main window with HWND m_MainHwnd = CreateWindowExW(WS_EX_TOOLWINDOW | WS_EX_LAYERED, CAxWindow::GetWndClassName(), _TEXT("http://www.-website-.com"), WS_POPUP, 0, 0, 1024, 768, NULL, NULL, m_Instance, NULL); ShowWindow(m_MainHwnd) If I do not create the main window, my application needs about 150K in memory. But with creating the main window with the WebBrowser Control inside, the memory usage increases to 8500K. But, I want to dynamically unload the main window. My _tWinMain(...) keeps running! Im unloading with DestroyWindow(m_MainHwnd) But the WebBrowser control won't unload and free up it's memory used! Application memory used is still 8500K! I can also get the WebBrowser Instance or with some additional code the WebBrowser HWND IWebBrowser2* m_pWebBrowser2; CAxWindow wnd = (CAxWindow)m_MainHwnd; HRESULT hRet = wnd.QueryControl(IID_IWebBrowser2, (void**)&m_pWebBrowser2); So I tried to free up the memory used by main window and WebBrowser control with (let's say it's experimental): if(m_pWebBrowser2) m_pWebBrowser2->Release(); DestroyWindow(m_hwndWebBrowser); //<-- just analogous OleUninitialize(); No success at all. I also created a wrapper class which creates the main window. I created a pointer and freed it up with delete: Wrapper* wrapper = new Wrapper(); //wrapper creates main window inside and shows it //...do some stuff delete(wrapper); No success. Still 8500K. So please, how can I get rid of the main window and it's WebBrowser control and free up the memory, returning to about 150K. Later I will recreate the window. It's a dynamically load and unload of the main window, depending on other commands. Thanks! Regards Martin

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  • Why isn´t linux using all the available memory

    - by Devator
    I have a linux VPS which has 256 MB of memory (free only finds 248 though). However it seems I still have 85 MB free, but it's swapping for 255 MB. Why is this? free -m total used free shared buffers cached Mem: 248 245 3 0 41 40 -/+ buffers/cache: 163 85 Swap: 1971 255 1716

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  • Windows 7 memory usage

    - by lydonchandra
    Physical memory(MB) for Windows 7 Total 4021 Cached 1113 Available 768 Free 174 Memory used 3.25GB At this point, windows7 asks me to close some programs because "system memory is low". From my understanding reading articles, I still have 768 MB free memory, why does windows7 complain? Also what does Cached memory refer to? Is this part of memory that Windows7 reserved for itself meaning it's free to use by Windows7 (and means I have about 768 + 1113 MB of free mem?)?

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  • What is the best free program to burn DVD movies from DVD movie files that are present on the hard drive the way ImgBurn does it in Windows?

    - by cipricus
    Evaluating burning programs is difficult: it takes more time, while errors are very unpleasant. I have looked at AcetoneISO, Brasero, and K3B (which many recommend) but they seem more limited than Nero, CDBurnXP and especially ImgBurn from Windows. They all seem to work (did not tested them fully myself) but at a more basic level (create ISO, burn them, etc.). When it comes to something like creating a DVD movie disk from DVD movie files present on the hard drive, it seems to me that I would have to create the ISO first and then burn it, which involves using more hard drive space and more time. Looking in the Windows direction, there is a Nero for Linux. It costs money. ImgBurn is said to work well in Wine, but as yet I have not tested it enough. What other options are there?

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  • Does anyone know of a simple (free?) feature request tracking system we could use internally for sales people?

    - by Ryan
    I sometimes hear about pain points of customers using our app from sales people, but there really isn't a good way for us to currently keep track of these. I was going to write one myself but figured I would ask first. I was thinking something so simple it would literally just be a small form for adding a new feature, and then it would appear in the list, like stackexchange questions. Then users can upvote them, or even record each time a user complains about something related to the request so we can order them in priority based on real data. Then I can easily go look every few days and see what's going on. That's really it, nothing more complicated than that. Know of anything?

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  • Add Recaptcha and GridView to an ASP.NET 3.5 Guestbook using MS SQL Server and VB.NET

    This is the conclusion to a four-part ASP.NET 3.5 guest book application tutorial series. In this last part you will learn how to integrate Recaptcha which is used to prevent spam automatic bot submission. Also to be discussed is how to add a GridView web control which is used to display all guest book comments retrieved from the database.... Download a Free Trial of Windows 7 Reduce Management Costs and Improve Productivity with Windows 7

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  • Building a Web Form in ASP.NET and PHP: a Comparison

    While there are important differences between PHP and ASP.NET both are used to build websites. Because of this both need to enable developers to build web forms among other tasks. This article compares building a web form in PHP with building the same form in ASP.NET to help those familiar with one set of tools to learn how to use the other set.... Download a Free Trial of Windows 7 Reduce Management Costs and Improve Productivity with Windows 7

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  • Microsoft Claims Success Versus Autorun Malware

    Microsoft recently used a post on the Threat Research and Response Blog section of its Malware Protection Center to describe how it is winning the battle against autorun malware. Although there is certainly no shortage of malware in the virtual world Microsoft has plenty of statistics to back its claims and it has displayed them with pride.... DNS Configured Correctly? Test Your Internal DNS With Our Free DNS Advisor Tool From Infoblox.

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  • Retrieving Data from Microsoft SQL Server 2008 Using ASP.NET 3.5

    Most of the web applications on the Internet require retrieving data from a database. Almost all websites today are database-driven so it is of primary importance for any developer to retrieve data from a website s database and display it on the web browser. This article illustrates basic ways of retrieving data from Microsoft SQL Server 2 8 using the ASP.NET 3.5 web platform.... Download a Free Trial of Windows 7 Reduce Management Costs and Improve Productivity with Windows 7

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  • ASP.NET 3.5 Loop Control Structures Using Visual Basic

    Loop statements are one of the most important control structures in any programming language. Control structures are used to control or alter the flow of the program depending on a given situation. This article acquaints you with the most important loop statements and how to use them when developing ASP.NET web applications.... Microsoft Exchange Server 2010 Simplify Administration and Deployment of Messaging - Free Download.

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  • More Advanced ASP.NET 3.5 Functions and Subroutines

    If you read the first part of this two-part series you know that functions and subroutines can help make coding programs with ASP.NET 3.5 simpler in certain ways. In this article you will be presented with a slightly more complex web application that uses functions and subroutines in ASP.NET.... Microsoft Exchange Server 2010 Simplify Administration and Deployment of Messaging - Free Download.

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