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  • How do I view how many concurrent long polling requests there are on my server?

    - by Pascal
    My host is Joyent. My host says I have 15 process limit and prstat -J shows those processes but that doesn't tell me how many long polling requests are currently being served. I could record it myself but that would add alot of performance overhead. I need to know when the server is at its long polling limits. I know this limit occurs far before the memory or CPU is used up. From experimentation, I've already verified that the number of long polls open is NOT equivalant to the number of processes running, probably because each process has multiple threads, each serving a request. thanks.

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  • Ridiculously Simple Erlang Question

    - by Aiden Bell
    Read (skimmed enough to get coding) through Erlang Programming and Programming Erlang. One question, which is as simple as it sounds: If you have a process Pid1 on machine m1 and a billion million messages are sent to Pid1, are messages handled in parallel by that process (I get the impression no) and is there any guarantee of order when processing messages? ie. Received in order sent? Coming from the whole C/Thread pools/Shared State background ... I want to get this concrete. I understand distributing an application, but want to ensure the 'raw bones' are what I expect before building processes and distributing workload. Also, am I right in thinking the whole world is currently flicking through Erlang texts ;)

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  • ASP.Net MVC 2 / EF 4 Reference Issue

    - by Eric J.
    My ASP.Net MVC 2 project references a Domain project where POCO business objects are defined and a Data project where EF 4 POCO persistence is implemented. Things were running well until I had a little fussiness with my version control provider (rollback to previous version left me with merge conflicts). Now, upon launching the MVC 2 project, I get a runtime error: The type 'System.Data.Objects.DataClasses.IEntityWithKey' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Data.Entity, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'. However, every project references System.Data.Entity (same version). If I remove the reference to System.Data.Entity from the MVC 2 project, I get the same message as a compile-time error. I'm pretty sure something got messed up when I had the version control issue, but really not sure where to look for this one.

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  • Access to path denied when saving an image with ASP.NET 4.0 project

    - by user161276
    I have an existing application that was written in .NET 3.5. The piece of code in question is using the FileUpload control and its SaveAs method. Its worked perfectly for the past six months, but I've recently upgraded the project to .NET 4.0 and I'm now receiving an "Access to path (...) is denied" every time the method is called. It works fine locally in dev mode but fails on my prod server. I've upgraded the website to run under .NET 4.0 and I've made sure the account (Network Service) it runs under in the app pool has full control. Other than upgrading to .NET 4.0, nothing has changed for the project. Any ideas or suggestions? Thanks in advance.

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  • status update error (null field)

    - by ejah85
    hai guys... i .ve the problem that i cannot be recovered yet... i have one form where admin need to approve or reject the booking request... i've set the b_status field in table usage IN PROCESS default value... i want to update the b_status value BOOKING APPROVED when user click APPROVE button.. otherwise, the b_status will update the value as BOOKING REJECTED when user click on the REJECT button here's is the form code: <?php $db = mysql_connect('localhost','root') or die ("unable to connect"); mysql_select_db('fyp',$db) or die ("able to select"); $sql="SELECT * FROM vehicle WHERE v_status='READY'"; $result = mysql_query($sql) or die ("Query failed!"); ?> <tr><td>&nbsp;</td></tr> <tr> <tr> <td width="200"><font face="Arial" size="2" font color="#000000">Registration Number </font></td> <td><select name="regno"> <option value="" selected>--Registration No--</option> <?php while($row = mysql_fetch_array($result)){?> <option value="<?php echo $row['regno']; ?>"><?php echo $row['regno']; ?></option> <?php } ?> </select></td> <td><font face="Arial" size="2" font color="#000000">Reason</font></td> <td><textarea name="reason" rows="3" cols="50 "value = ""></textarea></td> </tr> <?php $db = mysql_connect('localhost','root') or die ("unable to connect"); mysql_select_db('fyp',$db) or die ("able to select"); $sql="SELECT * FROM driver WHERE d_status='READY'"; $result = mysql_query($sql) or die ("Query failed!"); ?> <tr> <td><font face="Arial" size="2" font color="#000000">Driver</font></td> <td><select id = "d_name" name="d_name"> <option value="" selected>--Driver Name--</option> <?php while($row = mysql_fetch_array($result)){?> <option value="<?php echo $row['d_name']; ?>"><?php echo $row['d_name']; ?></option> <?php } ?> </select></td> </tr> <tr> <?php mysql_close($db); ?> </table> <p></p> <center><input name="APPROVED" type="submit" id="APPROVED" value="APPROVED"> <input name="REJECT" type="submit" id="REJECT" value="REJECT"> </center> </div> </center> and this is the process page code: <?php $db = mysql_connect('localhost','root') or die ("unable to connect"); mysql_select_db('fyp',$db) or die ("able to select"); $bookingno=mysql_real_escape_string($_POST['bookingno']); $username=mysql_real_escape_string($_POST['username']); $name=mysql_real_escape_string($_POST['name']); $department=mysql_real_escape_string($_POST['department']); $g_date=mysql_real_escape_string($_POST['g_date']); $g_time=mysql_real_escape_string($_POST['g_time']); $r_date=mysql_real_escape_string($_POST['r_date']); $r_time=mysql_real_escape_string($_POST['r_time']); $destination=mysql_real_escape_string($_POST['destination']); $pass_num=mysql_real_escape_string($_POST['pass_num']); $trip_purpose=mysql_real_escape_string($_POST['trip_purpose']); $regno=mysql_real_escape_string($_POST['regno']); $d_name=mysql_real_escape_string($_POST['d_name']); $reason=mysql_real_escape_string($_POST['reason']); $b_status=mysql_real_escape_string($_POST['b_status']); $sql = "INSERT INTO `usage` VALUES('$bookingno','$username','$name','$department','$g_date','$g_time','$r_date','$r_time','$destination', '$pass_num','$trip_purpose','$regno','$d_name','$reason','$b_status')"; $query = "INSERT INTO `usage` VALUES b_status ='BOOKING APPROVED'"; $result = @mysql_query($query); $query1 = "UPDATE driver SET d_status ='OUT' WHERE '$d_name'=d_name"; $result1 = @mysql_query($query1); if(isset($_POST['APPROVED'])) { $query2 = "UPDATE `usage` SET b_status ='BOOKING APPROVED' WHERE '$b_status'='IN PROCESS'"; $result2 = @mysql_query($query2); } if (isset($_POST['REJECT'])) { $query3 = "UPDATE `usage` SET b_status ='BOOKING REJECTED' WHERE '$b_status'='IN PROCESS'"; $result3 = @mysql_query($query3); } //$result = mysql_query($sql) or die ("error!"); $result = mysql_query($sql) or trigger_error (mysql_error().' in '.$sql); i.ve the problem on the b_status field.. plz guys... help me ya :-)

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  • Why does the token returned by LogonUser() in Win x64 not belong to LOCAL group?

    - by edwinbs
    Hi, I have a piece of code that calls LogonUser() followed by CreateProcessAsUser(). In Win32, the resulting process belongs to a user (say, TESTDOMAIN\user1) who belongs to the LOCAL group. However, in x64, the process owner does not belong to LOCAL. The owner still belongs to all other groups (Authenticated Users, Everyone, etc.) Does anyone know if this is a documented behavior change? Or am I supposed to put some special flag in x64 when calling LogonUser()? Thanks.

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  • c# list<int> how to insert a new value in between two values

    - by gdubs
    so i have a list where i need to add new values constantly but when i do i need to increment it and insert it in between two values. List<int> initializers = new List <int>(); initializers.Add(1); initializers.Add(3); so initializers would have 1, 3 values. i would then process a new set of numbers. the initializers will need to have the values. 1, 5, 3, 7 and if i process another set of numbers it should become 1, 9, 5, 13, 3, 11, 7, 15 i know how to properly generate the new values inserted, i just need some help on inserting it in between the existing values of the initializers without having to add 2 or 3 more loops to move the values' positions.

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  • Pattern for null settings

    - by user21243
    Hi, I would like to hear your thoughts and ideas about this one. in my application i have controls that are binded to objects properties. but.. the controls always looks like that: a check box, label that explain the settings and then the edited control (for ex: text box) when unchecking the checkbox i disable the text box (using binding) when the checkbox is unchecked i want the property to contain null, and when it is checked i would like the property to contain the text box's text. Of course text box can be NumericUpDown, ComboBox, DatePicker etc.. Do you have any smart way of doing it using binding or do i have to do everything on code; I really would like to a build a control that supports that and re-use it all over Ideas? Thanks,

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  • Creating compound applications in Windows 7

    - by Mmarquee
    I need to port a suite of Windows applications (running under XP with little security turned on) to Windows 7 with various levels of security, depending on how our clients may configure it. Each functional area is a seperate executable or DLL that is downloaded and registered by a central 'compound' application. This means that the different parts are all joined together to form in effect a large single application. My problem is that the compound application knows about the other applications via COM registery, either as a typelibrary or as OCXs, where appropriate. I have tried several questions here to try and solve the problems I am getting, but I don't seem to be able to get around the problem of needing elevated access to register applications and access the registry. Our clients will be expecting the same (relatively) seemless download and activation process as current under XP. So does anyone have a solution for registering typelibraries and OCX controls without need to go through an elevation process. Thanks in advance

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  • Business Objects Web Intelligence-style reporting in a Winform app. Is this possible?

    - by George
    I have a WinForm app that displays results in a Gridview control. If a user right mouse clicks on a row, he can then, from a popup menu, select a command to perform on the row much like windows File Explorer. But now I want to be able to give the user the ability to construct a filter so that he can control which rows are displayed in the grid w/o effecting the functionality of the application. I would also like the user to be able to select the columns/fields that he sees in the grid. For the basis of this question, let's assume that the data displayed in grid comes from a single table. business Objects' Web Intelligence and Desktop Intelligence applications give me very flexible and powerful reporting capabilities, but I want to integrate this capability into my WinForm application. Does Business Objects, or maybe Crystal Reports provide this sort of functionality? I can construct my own query builder but I'd rather not reinvent sliced bread.

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  • What could be adding "Pragma:no-cache" to my response Headers? (Apache, PHP)

    - by Daniel Magliola
    I have a website whose maintenance I've inherited, which is a big hairy mess. One of the things i'm doing is improving performance. Among other things, I'm adding Expires headers to images. Now, there are some images that are served through a PHP file, and I notice that they do have the Expires header, but they also get loaded every time. Looking at Response Headers, I see this: Expires Wed, 15 Jun 2011 18:11:55 GMT Cache-Control no-store, no-cache, must-revalidate, post-check=0, pre-check=0 Pragma no-cache Which obviously explains the problem. Now, i've looked all over the code base, and it doesn't say "pragma" anywhere. .htaccess doesn't seem to have anything related either. Any ideas who could be setting those "pragma" (and "cache-control") headers, and how I can avoid it? Thanks! Daniel

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  • IIS6 + PHP + FastCGI 500 Errors - Where do I start looking?

    - by Bertvan
    I've set up IIS6 with FastCGI to use php-cgi.exe. I have some php websites by external parties, that I'm trying to run in a test environment. One of the websites just plain gives me a FastCGI Error Page. Is there some way to enable logging somewhere so that I can get a bit more information on this problem? I have looked in - Eventlog - IIS Website log (c:\windows\system32\Logfiles) - PHP log But no results, except the IIS Website log mentions a return of a 500 page. Is there any other way to debug/check where things might be going wrong? Here is what the page looks like: FastCGI Error The FastCGI Handler was unable to process the request. Error Details: The FastCGI process exited unexpectedly Error Number: -1073741571 (0xc00000fd). Error Description: Unknown Error HTTP Error 500 - Server Error. Internet Information Services (IIS)

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  • How can I measure TForm deserialization time in Delphi?

    - by mjustin
    For performance tests I need a way to measure the time needed for a form to load its definition from the DFM. All existing forms inherit a custom form class. To capture the current time, this base class needs overriden methods as "extension points": before the beginning of the deserialization process after the completion of deserialization (can be implemented by overriding the Loaded procedure) the moment just before the execution of the OnFormCreate event Which TObject (or TComponent) methods are best suited? Maybe there are other extension points in the form creation process, please feel free to make suggestions.

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  • Multiple layout UserControl

    - by johnm01
    Hi all, I have a UserControl that manages a lot of editable information (like text-boxes). Now I need to make a version of this control that has a different layout (from horizontal to vertical). I can expose the control, like this: public TextBox MyText { get { return myText; } set { myText = value; } } i can now manually change the location and size, but this does not give me a visual reposition of them at design time. Is there a better way of doing this ? Thanks John

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  • Threading multiple WebBrowser in VB .net

    - by Code_Seeker
    I'm building a multiple webbrowser inside tabs( 1 predefine webbrowser control per tab) and I want them all to load at the same time or other words must run in thread. Unfortunately I feel a valid fact came from the error message that this is something not possible. Pls help me to check my simple program code below and its error in case i tried releasing 2 webbrowser controls but when I leave it to single web browser control it works fine. Any workaround? Imports System.Threading Public Class Form1 Dim mythread1 As Thread Dim mythread2 As Thread Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load mythread1 = New Thread(AddressOf mysub1) mythread2 = New Thread(AddressOf mysub2) mythread1.IsBackground = True mythread2.IsBackground = True mythread1.Start() mythread2.Start() End Sub Public Sub mysub1() Dim HTML As String WebBrowser1.Navigate("about:blank") mythread1.Abort() End Sub Public Sub mysub2() WebBrowser2.Navigate("about:blank") mythread2.Abort() End Sub

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  • urllib alternative for iPhone

    - by Pr301
    hi, I am trying to create an iPhone application which in some point connects to the internet, fills an on-line form, fetches the resulting website, parses it and returns a string to the user. I want all this process to happen in the background. I know how to do this kind of things with python and urllib but in objc I can't find an alternative, from on-line search I found either sites that explain how to use webkit to retrieve webpages (I suppose this is for displaying them to the user) or how to parse an existing HTML file or string. Since I want the file to be retrieved from the internet and the whole process should be running in the background, neither of these solutions covers my needs.

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  • how to selfhost wcf without iis

    - by dotnetcoder
    Reading up on WCF we have self hosting option available , one limitation here is we have to manage the host process lifecycle ourselves. What I am exploring here is to run the service without IIS and do a self hosting. Few things come to mind - How will request management work here. In case of IIS it manages the request and give control to dotnet on a particular thread. In absence of IIS do we need to write code ourselves to manage incoming requests ( say on a tcp port ) or WCF provides some classes to manage request and spawn threads to process each thread. I am aware that in case of self hosting this needs to be a windows service. In case of self hosting how can me tap on the number of simultaneous requests on the sever , it can be managed by limiting the thread pool ? or we can configure this via wcf ? Thanks dc

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  • How to create reusable WPF grid layout

    - by zendar
    I have a window with tab control and number of pages - tab items. Each tab item has same grid layout - 6 rows and 4 columns. Now, each tab item contains grid with row and column definitions, so almost half of XAML is definition of grids. How can I define this grid in one place and reuse that definition in my application? Template? User control? Besides 6x4, I have only two more grid dimensions that repeat: 8x4 and 6x6.

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  • WPF update binding in a background thread

    - by Mark
    I have a control that has its data bound to a standard ObservableCollection, and I have a background task that calls a service to get more data. I want to, then, update my backing data behind my control, while displaying a "please wait" dialog, but when I add the new items to the collection, the UI thread locks up while it re-binds and updates my controls. Can I get around this so that my animations and stuff keep running on my "please wait" dialog? Or at least give the "appearance" to the user that its not locked up?

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  • c++ new & delete and string & functions

    - by Newbie
    Okay the previous question was answered clearly, but i found out another problem. What if i do: char *test(int ran){ char *ret = new char[ran]; // process... return ret; } And then run it: for(int i = 0; i < 100000000; i++){ string str = test(rand()%10000000+10000000); // process... // no need to delete str anymore? string destructor does it for me here? } So after converting the char* to string, i dont have to worry about the deleting anymore?

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  • Recommendations for C# controls that can be used to create a hierarchical list of prioritised items?

    - by Mendokusai
    I need to be able to display and edit a hierarchical list of tasks in a C# app. It can either be a Windows form app, or ASP.NET. Basically, I want similar behaviour to the way Microsoft Project handles tasks. The control would need to: 1) Maintain a list of items made up of several fields 2) Each item can have a number of children (at least 3 levels of nesting) 3) It needs to be very easy to change the parents/children of an item 4) It needs to be very easy to edit the fields (as fast as changing cells in Excel) 5) It needs to be very easy to reorder the items by dragging and dropping or cut and paste 6) If I can easily connect the control to a database, even better Anyone got any recommendations for controls for me to look at?

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  • Web SITE publishing, dynamic compilation, smoke & mirrors

    - by tbehunin
    When you publish a web SITE in Visual Studio, in the dialog box that follows, you are given an option to "Allow this precompiled site to be updatable". According to MSDN, checking this option "specifies that all program code is compiled into assemblies, but that .aspx files (including single-file ASP.NET Web pages) are copied as-is to the target folder". With this option checked, you can update existing .aspx files as well as add new ones without any issue. When a page, that has either been updated or newly created, is requested, the page gets dynamically compiled at run-time and is then processed and returned to the user. If, on the other hand, you didn't check that checkbox during the publish phase, the .aspx files get compiled, along with the code-behind and App_Code files in separate assemblies. The .aspx files are then completely overwritten with a line of text that says: This is a marker file generated by the precompilation tool, and should not be deleted! You obviously can't edit an existing page in this scenario. If you were to ADD a new .aspx file to this site, you would get a .Net run-time error saying that the file hasn't been precompiled. With that background, my questions are these: Something must be able to determine that this website was published to be updatable (allow dynamic compilation) or not. If it was published as updatable, it must also be able to determine whether a file was changed or added, so it can do a dynamic compile. Who makes those determinations? IIS? ASP.NET worker process? HOW does it make those determinations? If I had the same website published in both of those scenarios, could I make a visual determination that one is updatable and the other is not? Is there some bit I can look at in the assemblies using Reflector to make that determination myself? In addition to answering those questions, what also might be helpful would be information on the process flow from when a resource is requested to when it starts being processed, not necessarily the ASP.NET Page Lifecycle, but what happens BEFORE ASP.Net worker process starts processing the page and firing off events. The dynamic compilation appears to be smoke and mirrors. Can someone demystify this for me?

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