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  • File I/O OS handling

    - by Albinoswordfish
    This isn't a direct coding question but more of a OS handling mechanism. I was reading somebody's previous question regarding C# and file handling. Apparently C# was throwing an exception regarding a file being locked when trying to access this. So my question is, does C# use an internal lock to handle file I/O between processes, or does the OS use some type of mutual exclusion for file I/O? From what I learned about operating systems, well at least unix, is that the OS doesn't implement any type of mutual exclusion for processes trying to access the same file.

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  • DataTable.WriteXml on background thread

    - by Sheraz KHan
    I am trying to serealize DataTables in a background thread and it's failing. Any idea [Test] public void Async_Writing_DataTables() { string path = @"C:\Temp\SerialzeData"; if (!Directory.Exists(path)) { Directory.CreateDirectory(path); } Assert.IsTrue(Directory.Exists(path)); Thread thread1 = new Thread(new ThreadStart(delegate { object lockObject = new object(); for (int index = 0; index < 10; index++) { lock (lockObject) { DataTable table = new DataTable("test"); table.WriteXml(Path.Combine(path, table.TableName + index + ".xml")); } } })); thread1.Start(); }

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  • Insert wait in VS2008 web test.

    - by SonOfOmer
    Hi everyone, How can I insert time wait value in web test in Visual Studio 2008 test edition? I have recorded a web test that I want to use in Load test. Now I need to put some time delay between pages in web test. Thanks a lot.

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  • Useful Eclipse Java Code Templates

    - by Jon
    You can create various Java code templates in Eclipse via the Window->Preferences->Java -> Editor -> Templates e.g. sysout is expanded to: System.out.println(${word_selection}${});${cursor} You can activate this by typing sysout followed by CTRL+SPACE What useful Java code templates do you currently use? Include the name and description of it and why it's awesome. There's an open bounty on this for an original/novel use of a template rather than a built-in existing feature. Create Log4J logger Get swt color from display Syncexec - Eclipse Framework Singleton Pattern/Enum Singleton Generation Readfile Const Traceout Format String Comment Code Review String format Try Finally Lock Message Format i18n and log Equalsbuilder Hashcodebuilder Spring Object Injection Create FileOutputStream

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  • How to throw an HTTP error with mod_python

    - by Zxaos
    I have a setup where I'm serving simple python pages using the mod_python publisher. At some points I'd like to have the python function raise a standard apache error - for example throwing a 500 error if a required file is missing. How can I throw an apache error from within a mod_python script?

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  • Enforcing a coding template in the getters of a class in java

    - by Yoav Schwartz
    Hello, I want to make sure all getters of the classes in a certain package follow a given template. For example, all getters must be of the form: XXX getYYY(){ classLock.lock(); return YYY; finally{ classLock.unlock(); } } Basically, I want that my project will not compile/run unless all getters are of that form. What is the best way to do that? I would prefer a solution that can be used as an Eclipse plugin. Thanks, Yoav

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  • How can I find out if an instance is a MarshalByRef proxy?

    - by Will
    I know there's a way, I know I've done it (a long time) before, but I can't remember or find out how to do it!!! var otherDomain = AppDomain.Create("Lol my memory sucks"); var myRemotableType = typeof(MyTypeThatExtendsMBRO); var proxy = otherDomain .CreateInstanceAndUnwrap( type.Assembly.FullName, type.FullName); // how do you do this next step??? bool isProxy = IsYouIsOrIsYouAintAProxy(proxy);

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  • How to get cursor to follow text when reading a web page?

    - by Jack BeNimble
    I know this isn't strictly program related, but I think I've seen this answer on SO before and lost track of it. The specific question has to do with reading an electronic document. I find it helpful to move the cursor across the words as I'm reading them. This works great with Word documents, but I'm unable to do it with web pages. Is there a way to make a web page see and respond to cursor movement?

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  • Adding Parsekit To An Xcode Project

    - by Garry
    I am trying to add the Parsekit framework to my OSX Xcode project. I've never added a 3rd party framework before and I can't get it to work right. I dragged the included Xcode project into my 'Groups & Files' pane and chose to Add it to my project. I then dragged Parsekit.framework underneath the Link Binary With Libraries heading. Then I double-clicked my target app and added Parsekit as a Direct Dependency. I also added libicucore.dylib as a Linked Library (as it says to do this on their site). Finally, in the Build settings tab of my target info I set the Header Search Paths to /Users/path/to/include/directory and the Other Linker Flags to -ObjC -all_load. Running this as a debug build work fine with no errors. However, when I build my app to release and then try to run the executable created, the app fails to load with the following error message: MyApp cannot be opened because of a problem. Check with the developer to make sure myApp works with this version of Mac OS X. Here is the dump from the crash reporter: Process: MyApp [11658] Path: /Users/Garry/Programming/Xcode/Mac/MyApp/build/Release/MyApp.app/Contents/MacOS/MyApp Identifier: com.yourcompany.MyApp Version: ??? (???) Code Type: X86-64 (Native) Parent Process: launchd [135] Date/Time: 2010-05-24 17:08:08.475 +0100 OS Version: Mac OS X 10.6.3 (10D573) Report Version: 6Interval Since Last Report: 133300 sec Crashes Since Last Report: 3 Per-App Crashes Since Last Report: 3 Anonymous UUID: DF0265E4-B5A0-45E1-8B71-D52A27CFDDCA Exception Type: EXC_BREAKPOINT (SIGTRAP) Exception Codes: 0x0000000000000002, 0x0000000000000000 Crashed Thread: 0 Dyld Error Message: Library not loaded: @executable_path/../Frameworks/ParseKit.framework/Versions/A/ParseKit Referenced from: /Users/Garry/Programming/Xcode/Mac/MyApp/build/Release/MyApp.app/Contents/MacOS/MyApp Reason: image not found Model: MacBookPro5,5, BootROM MBP55.00AC.B03, 2 processors, Intel Core 2 Duo, 2.53 GHz, 4 GB, SMC 1.47f2 Graphics: NVIDIA GeForce 9400M, NVIDIA GeForce 9400M, PCI, 256 MB Memory Module: global_name AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x8D), Broadcom BCM43xx 1.0 (5.10.91.27) Bluetooth: Version 2.3.1f4, 2 service, 2 devices, 1 incoming serial ports Network Service: AirPort, AirPort, en1 Network Service: Ethernet Adaptor (en6), Ethernet, en6 Serial ATA Device: Hitachi HTS545025B9SA02, 232.89 GB Serial ATA Device: HL-DT-ST DVDRW GS23N USB Device: Built-in iSight, 0x05ac (Apple Inc.), 0x8507, 0x24400000 USB Device: Internal Memory Card Reader, 0x05ac (Apple Inc.), 0x8403, 0x26500000 USB Device: IR Receiver, 0x05ac (Apple Inc.), 0x8242, 0x04500000 USB Device: Apple Internal Keyboard / Trackpad, 0x05ac (Apple Inc.), 0x0237, 0x04600000 USB Device: BRCM2046 Hub, 0x0a5c (Broadcom Corp.), 0x4500, 0x06100000 USB Device: Bluetooth USB Host Controller, 0x05ac (Apple Inc.), 0x8213, 0x06110000 After building the app, in addition to the executable file, Xcode is also creating a file called MyApp.app.dSYM. Any idea what that is?? I am developing with Xcode 3.2.2 on an Intel MBP running 10.6.3. Many thanks for any help offered.

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  • Rails nested URL question

    - by Jacobo Tibaquira
    Hi Im having issues with RESTful URLs in Rails. I have site.com/services url, and I want to have subpages under that category, thats it: site.com/services/arquitecture, site.com/services/plumbing, etc. The pages that im serving under that category are "static" .rhtml files and I would want them to be on the same controller. Is there a way of doing this? I've tried nested resources but I find it hard to fully understand. Thanks

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  • Warning: mysql_real_escape_string()?

    - by Tom
    Hi, I am getting the error; Warning: mysql_real_escape_string() [function.mysql-real-escape-string]: Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2) Why do I get this error? The mysql_real_escape_string() works on all of my pages apart from one? Is it something to do with MySQL being on a different server to the PHP server - if so, how do I fix it? Thanks Tom

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  • Subclassing a window from a thread in c#

    - by user258651
    I'm creating a thread that looks for a window. When it finds the window, it overrides its windowproc, and handles WM_COMMAND and WM_CLOSE. Here's the code that looks for the window and subclasses it: public void DetectFileDialogProc() { Window fileDialog = null; // try to find the dialog twice, with a delay of 500 ms each time for (int attempts = 0; fileDialog == null && attempts < 2; attempts++) { // FindDialogs enumerates all windows of class #32770 via an EnumWindowProc foreach (Window wnd in FindDialogs(500)) { IntPtr parent = NativeMethods.User32.GetParent(wnd.Handle); if (parent != IntPtr.Zero) { // we're looking for a dialog whose parent is a dialog as well Window parentWindow = new Window(parent); if (parentWindow.ClassName == NativeMethods.SystemWindowClasses.Dialog) { fileDialog = wnd; break; } } } } // if we found the dialog if (fileDialog != null) { OldWinProc = NativeMethods.User32.GetWindowLong(fileDialog.Handle, NativeMethods.GWL_WNDPROC); NativeMethods.User32.SetWindowLong(fileDialog.Handle, NativeMethods.GWL_WNDPROC, Marshal.GetFunctionPointerForDelegate(new WindowProc(WndProc)).ToInt32()); } } And the windowproc: public IntPtr WndProc(IntPtr hWnd, uint msg, IntPtr wParam, IntPtr lParam) { lock (this) { if (!handled) { if (msg == NativeMethods.WM_COMMAND || msg == NativeMethods.WM_CLOSE) { // adding to a list. i never access the window via the hwnd from this list, i just treat it as a number _addDescriptor(hWnd); handled = true; } } } return NativeMethods.User32.CallWindowProc(OldWinProc, hWnd, msg, wParam, lParam); } This all works well under normal conditions. But I am seeing two instances of bad behavior in order of badness: If I do not close the dialog within a minute or so, the app crashes. Is this because the thread is getting garbage collected? This would kind of make sense, as far as GC can tell the thread is done? If this is the case, (and I don't know that it is), how can I make the thread stay around as long as the dialog is around? If I immediately close the dialog with the 'X' button (WM_CLOSE) the app crashes. I believe its crashing in the windowproc, but I can't get a breakpoint in there. I'm getting an AccessViolationException, The exception says "Attempted to read or write protected memory. This is often an indication that other memory is corrupt." Its a race condition, but of what I don't know. FYI, I had been reseting the old windowproc once I processed the commands, but that was crashing even more often! Any ideas on how I can solve these issues?

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  • javascript detect if being run in hta

    - by rjmunro
    We'd like to allow our users to download an hta file and run our web app inside it, and have certain pages detect that they are running in an hta file and offer additional features that a web app wouldn't normally have permission to do. How can I simply detect if the page is being browsed from an hta file container?

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  • iphone: caching and updating xml fields

    - by pJosh
    Thanks for your help. Here I have another question. I get the data through XMLParsing, now I want to store it in iphone's cache, and the XML Fields are updates every 12 hours.how can i check that XML Fields are change or not? and how can I store the data in iphone's cache memory so that evry it does not has to interact with web. Can anybody please help me???

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  • SQL Server Table locks in long query - Solution: NoLock?

    - by Kovu
    a report in my application runs a query that needs between 5 - 15 seconds (constrained to count of rows that will be returned). The query has 8 joins to nearly all main-tables of my application (Customers, sales, units etc). A little tool shows me, that in this time, all those 8 tables are locked with a shared table lock. That means, no update operation will be done in this time. A solution from a friend is, to have every join in the query, which is not mandetory to have 100% correct data (dirty read), with a NoLock, so only 1 of this 8 tables will be locked completly. Is that a good solution? For a report in which 99% of data came from one table, unlock the less prio tables?

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  • How to add a book mark feature in windows phone 8 webbrowser

    - by Aadarsh
    Every one i am developing a web browser for windows phone , as you know two most important feature are history and bookmark , but i am new bee to wp8 but i want those two feature in my wp8 web browser . So any body know to implement those two things. means when history page is shown it can display list of all the web pages visited and when book marks page is open it can diplay list of all the book marks aaded hope you are able to understand the problem.

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  • How to make easily PDF version of a web?

    - by MartyIX
    I'm trying to make an offline version of a web and I'm looking for a tool that would do the task automatically for the whole web (circa 1000 pages of HTML + images). Is there anything like that and free? I know it is quite challenge for a program but maybe I'll be lucky :). Thanks!

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  • How to insert JSP functionality in Servlets?

    - by chustar
    How can I use Servlets to access the HTML uses of having JSP without having to have all my client-facing pages called *.jsp? I would rather do this than using all the response.write() stuff because I think it is easier to read and maintain when it is all clean "HTML". Is this is fair assesment?

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  • losing mvc intellisense

    - by freddoo
    Hi My intellisense doesn't work in aspx or ascx pages running mvc 1.0 When I save or build it does not show the intellisense, but if I do a clean then it works it this a bug or am I missing something ? thanks

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  • Tab control in Silverlight 3.0 and Dirty data

    - by Vinayak Bhosale
    We are using tab control in our project. While using this control i came across a few issues like - When the tab control loads, it invokes constructor of all the xaml pages that form the individual tabs. Can this be avoided? Is there any event with tab control that we can use to identify dirty data on the previous tab that i may have visited. I mean can i prevent user from navigating to some other tab before saving the changes on current tab.

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  • Difference between Breadth First Search, and Iterative deepening

    - by theraven
    I understand BFS, and DFS, but for the life of me cannot figure out the difference between iterative deepening and BFS. Apparently Iterative deepening has the same memory usage as DFS, but I am unable to see how this is possible, as it just keeps expanding like BFS. If anyone can clarify that would be awesome. tree to work on if required: A / \ B C / / \ D E F

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  • Sysadmin 101: How can I figure out why my server crashes and monitor performance?

    - by bflora
    I have a Drupal-powered site that seems to have neverending performance problems. It was butt-slow about 5 months ago. I brought in some guys who installed nginx for anonymous visitors, ajaxified a few queries so they wouldn't fire during page load, and helped me find a few bottlenecks in the code. For about a month, the site was significantly faster, though not "fast" by any stretch of the word. Meanwhile, I'm now shelling out $400/month to Slicehost to host a site that gets less than 5,000/uniques a day. Yes, you read that right. Go Drupal. Recently the site started crashing again and is slow again. I can't afford to hire people to come in, study my code from top to bottom, and make changes that may or may not help anymore. And I can't afford to throw more hardware at the problem. So I need to figure out what the problem is myself. Questions: When apache crashes, is it possible to find out what caused it to crash? There has to be a way, right? If so, how can I do this? Is there software I can use that will tell me which process caused my server to die? (e.g. "Apache crashed because someone visited page X." or "Apache crashed because you were importing too many RSS items from feed X.") There's got to be a way to learn this, right? What's a good, noob-friendly way to monitor my current apache performance? My developer friends tell me to "just use Top, dude," but Top shows me a bunch of numbers without any context. I have no clue what qualifies as a bad number or a good number in Top, or which processes are relevant and which aren't. Are there any noob-friendly server monitoring tools out there? Ideally, I could have a page that would give me a color-coded indicator about how apache is performing and then show me a list of processes or pages that are sucking right now. This way, I could know when performance is bad and then what's causing it to be so bad. Why does PHP memory matter? My apparently has a 30MB memory foot print. Will it run faster if I bring that number down? Thanks for any advice. I spent a year or so trying to boost my advertising income so I could hire a contractor to solve my performance woes. I didn't want to have to learn all this sysadmin voodoo. I'm now resigned to the fact that might not have a choice.

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