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  • Split text files Accross threads

    - by Kevin
    The problem: I have a few text files (10) with numbers in them on every line. I need to have them split across some threads I create using the pthread library. these threads that are created (worker threads) are to find the largest prime number that gets sent to them (and over all the largest prime from all of the text files). My current thoughts on solutions: I am thinking myself to have two arrays and all of the text files in one array and the other array will contain a binary file that I can read say 1000 lines and send the pointer to the index of that binary file in a struct that contains the id, file pointer, and file position and let it crank through that. a little bit of what I am talking about pthread_create(&threads[index],NULL,calc_sqrt,(void *)threadFields[index]);//Pass struct to each worker Struct: typedef struct threadFields{ int *id, *position; FILE *Fin; }tField; If anyone has any insight or a better solution it would be greatly appreciated Thanks

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  • Recognizing synchronization object hanging two 3rd party executables

    - by eran
    I'm using a 3rd party tool, which uses a 4th party plugin. Occasionally, the tool will hang when launched. Looking at the stack traces, I can see a few threads are waiting on WaitForSingleObject, and my bet is that they're blocking each other. Some of the threads start at the 3rt party tool, and some at the 4th party plugin. What I'd like to do is file the most detailed complaint to the 3rd party tool vendor, assuming it's its fault (I don't trust their local support to get those details themselves). For that, I'd like to: Find out what are the synchronization objects currently waited on Find out who has created those synchronization objects Tools currently at hand are VS2005, WinDbg and Process Explorer. OS is Window 7 64 bit. Any suggestions?

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  • Creating huge images

    - by David Rutten
    My program has the feature to export a hi-res image of the working canvas to the disk. Users will frequently try to export images of about 20,000 x 10,000 pixels @ 32bpp which equals about 800MB. Add that to the serious memory consumption already going on in your average 3D CAD program and you'll pretty much guarantee an out-of-memory crash on 32-bit platforms. So now I'm exporting tiles of 1000x1000 pixels which the user has to stitch together afterwards in a pixel editor. Is there a way I can solve this problem without the user doing any work? I figured I could probably write a small exe that gets command-lined into the process and performs the stitching automatically. It would be a separate process and it would thus have 2GB of ram all to itself. Or is there a better way still? I'd like to support jpg, png and bmp so writing the image as a bytestream to the disk is not really possible.

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  • how to write floating value accurately to a bin file.

    - by user319873
    Hi I am trying to dump the floating point values from my program to a bin file. Since I can't use any stdlib function, I am thinking of writting it char by char to a big char array which I am dumping in my test application to a file. It's like float a=3132.000001; I will be dumping this to a char array in 4 bytes. Code example would be:- if((a < 1.0) && (a > 1.0) || (a > -1.0 && a < 0.0)) a = a*1000000 // 6 bit fraction part. Can you please help me writting this in a better way.

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  • rails migration. modify starting point for auto_increment

    - by railsnew
    I have a table already created. I am looking for a rails migration where I can modify the starting point of the auto_increment number for id column of my table. Let's say I want it to start from 1000. I googled a bit and came across this: it says: :options "string" pass raw options to your underlying database, e.g. auto_increment = 10000. Note that passing options will cause you to lose the default ENGINE=InnoDB statement Can this be used for something I want? and how will the migration look since i am changing the column and not creating new one...

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  • SQL Compact Edition database corruption

    - by jdv
    Hi, Our product is using MS SQL Compact Edition on a Windows machine (laptop). It's basically a metadata index for files we have on the filesystem. Recently we have seen databases getting corrupted. This happens when the machine is very busy moving files around and has to do a tiny bit of database changes at the same time. I was somewhat shocked that was at all possible. It was my expectation that the database would stay coherent whatever the circumstances. Of course we are doing something wrong. Things we have checked so far are: Use of only one db connection per thread specify the maximum size when opening the database The database is accessed only by one application, a .net based windows service. Are there other gotcha's?

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  • Activating "pointer-events:none" only on section of image that overlaps

    - by Buckers
    I'm using pointer-events:none; on the main photograph at the top of my site http://www.onedirection.net/, to allow the user to select the navigation behind the image. However, I'd like to let the user click on each member of the band to go to a separate page, but ONLY for the parts of the image that don't overlap into the navigation. I'm a bit stuck with this. Can it be done? I was thinking of using an image map, but can't get it working without the navigation becoming "less clickable".

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  • How to convert a MooTools 'Scroll to Top' Script to jQuery

    - by Vikram
    Hello friends I have the following script in my Template: window.addEvent('domready', function () { var a = $('totop'); if (a) { var b = new Fx.Scroll(window); a.setStyle('outline', 'none').addEvent('click', function (e) { new Event(e).stop(); b.toTop() }) } }); I wanted this in jQuery as I don't want to load 2 libraries just for this bit of script. I am actually very new to programming and still in the learning stage. Hence looking forward for some help on this issue. Kindly Help.

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  • Shared WCF client code between .NET and Silverlight apps?

    - by Eduardo Scoz
    I'm developing a .NET application that will have both a WinForms and a Silverlight client. Although the majority of code will be in the server, I'll need to have quite a bit of logic in the clients as well, and I would like to keep the client library code the same. From what I could figure out so far, I need to have two different project types, a class library and a Silverlight class library, and link the files from one project to the other. This seems kind of lame, but it works for simple code. My problem, though, is that the code generated by the SVCUtil.exe to access WCF services is different from the code generated by the slsvcutil.exe, and the silverlight code is actually incompatible with the .NET one: I get a bunch of problems with the System.ServiceModel.Channel classes when I try to import the class into .NET. Has anybody done anything similar to this before? What am I doing wrong?

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  • Net Neutrality FAIL [closed]

    - by leeand00
    I know I'll get into all kinds of trouble for bringing this up on SO, but considering that nearly all of us programmers depend on the Internet to get our jobs done, I really think it's worth looking into today's failure of our right to use the Internet by way of Lobbying ISPs. Although something tells me there will be retribution for the actions of the ISPs/tel cos/cable and their lobbyist since, lets face it...ISPs/Telcos didn't invent the Internet. I'm not going to be the one to do it, but um I think somebody already has...as everybody I talked to was having Internet connection problems today at work. Just thought this might be relevant to all of our jobs...in the U.S.A. at least. If you work at an Big evil ISPs, by all means...try and close this question. If you don't...and your just a chap who enjoys your Internet access...please RT this: Contact The Democrats Who Are Against Net Neutrality (Full List W/ Contact Info) http://bit.ly/aMSV0W #NetNeutralityFAIL net-neutrality

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  • Printing UTF-16 strings in JSP is outputted as HTML encoding (&#xxxx)

    - by Ori Osherov
    Hello, When I try to print a UTF-16 string in JSP, specifically Hebrew, it ends up showing up as HTML encoding (&#xxxx). This problem occurs because I print an array of variables into the web page and then parse them. The variables are all UTF-16 strings, but once the servlet prints the variables, it becomes translated to HTML encoding. Is there any way to get rid of the encoding? Thanks in advance Edit for a bit more background: The JSP that I'm printing is not the entirety of the page. It's used in a manner I don't quite understand by a server app which prints the JSPs output into its built in page. As a result, I can't, for instance, use a tag because the will have already been placed somewhere else. This isn't a frame or anything like that. It's just redirected output.

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  • annotation pins in iphone

    - by alecnash
    Guys I am a little bit stuck here. So here it goes. I am using json to get latitude and longitude for a map project. I use these values to add some pins on the map. I also created a detail view for the pins. Here comes the tricky part. I want to load some images from my db to the detail view but I don't know how to tell the pins appart so the right image goes to the right pin. Thanks in advance

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  • Do you draw the entire object?

    - by vbman11
    Hi I'm working on learning 3d game development and I'm starting with JavaScript and the html5 canvas and I was wondering if I were to have a 3d model do I draw the entire model(front, back, etc) and let the web browser decide what to render or should I try to just draw the sides that are in view of the camera? I ask this because I can see how it would be faster to do the latter of the 2 but that can get very complex and I'll need to do quite a bit more research to find how to do that. Thanks!!

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  • How much trust can I put behind a computer system? How can I measure trust?

    - by danmine
    How much trust can I put in a standard computer running windows? To what certainty can I be sure it will run my code the way I wrote it? How can I be sure that if I declare something like "int j = 5;", j will alway be 5? Is there a way to measure trust in a standard x86 computer system? What kind of protections are there to make sure that j = 5? I'm thinking about critical systems where nothing can be off even by one bit and everything must run exactly the way it was written to run.

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  • Add database to plesk domain account via XML

    - by Ryan French
    Hi All, I'm currently working on trying to integrate a site with Plesk via the XML API and I've run into a bit of an issue. I've managed to get most things working but I'm trying to add a database to a domain and I keep getting an error. When creating the database I extract a list of Domain Accounts associated with the current clients account, and use the domain guid that is returned in the XML to try and create the new database, but Plesk is returning an error stating that the id I am using is not a valid id. I've looked at the documentation and it is saying that the domain ID that I should be sending is an integer, but the only ID I can find for the domain is the guid, which is a string. Anyone done anything like this before and know where I can get the ID from?

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  • change color of red box on tri-state checkbox

    - by Adam S
    Hi all. I'm trying to get the green box that appears on the second click of a tri-state checkbox to be red, and also to fill up the box. I found an article here that demonstrates a little bit about using templates to do this: http://social.msdn.microsoft.com/Forums/en-US/wpf/thread/98cf8a65-f4ca-4ff5-9851-c2989b91a013 However, I can't figure out how to interpret all that. I only understand a few of the things in that template and don't know how to get my red box. Can anyone help, and also tell me how you knew what to do?

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  • Compute column widths in a HTML-like manner (based on cell contents)

    - by cipak
    Hi, I have a grid of data that I want to export to RTF, PDF etc. using various (and not perfect) PHP converters/generators. What I am missing most is the HTML table automatic adjustment of column widths based on the lengths of strings in the cells (strings contain line breaks which complicate things a bit, as they should be preserved). I need an algorithm that, given the contents of the cells (plain text), a total width of the table and an average width of a character, would return a width for each column. I wouldn't want to reinvent the wheel if something is already available. Of course it can't be perfect if the font is variable width, but an approximation would do just fine. Or maybe it could have a configurable table with widths for each character. Any hint would be appreciated. Thank you.

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  • NSTextField (Label) Attributed Text: Select

    - by huntaub
    I have a NSTextField Label that has attributed text in it. The color and size are different from the defaults. (The text is a bit larger and green) Now, I need to be able to select the text in the label so as the click the hyperlinks embedded in the attributed text. This works fine; however, when selecting the text the format of the text reverts back to the defaults (a smaller, black font). Is there anyway to stop this behavior so that my styling is preserved when the user clicks (selects text) on a Label?

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  • Get countries within range of LAT/LONG coordinates

    - by ptrn
    Trouble! I'm looking for a way to find the countries within a given range of LAT/LONG coordinates. E.g.: When viewing a place in Africa in Google Maps, I get out which countries that are in my current view. This is a bit ambitious, and I think the main problem will be dealing with accuracy of the needed polygons. The accuracy of these don't need to be all that great, the borders can probably be tens of miles off, or even more. This will be needed for the entire world.

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  • Installation Error When Installing Package from R Forge

    - by Suminda Sirinath Salpitikorala
    I am trying to update zoo from R Forge. install.packages("zoo", repo = "http://r-forge.r-project.org") But I get the following error Installing package(s) into ‘C:/REVOLU~1/R-COMM~1.3/R-212~1.2/library’ (as ‘lib’ is unspecified) Warning in install.packages : cannot open: HTTP status was '404 Not Found' Warning in install.packages : cannot open: HTTP status was '404 Not Found' Warning in install.packages : unable to access index for repository http://r-forge.r-project.org/bin/windows/contrib/2.12 Warning in install.packages : package ‘zoo’ is not available I am using Revolution R Community version 4.3 (64-bit). install.packages("zoo") Installs a slightly dated version of zoo

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  • CakePHP: How can I disable auto-increment on Model.id?

    - by tomws
    CakePHP 1.3.0, mysqli I have a model, Manifest, whose ID should be the unique number from a printed form. However, with Manifest.id set as the primary key, CakePHP is helping me by setting up auto-increment on the field. Is there a way to flag the field via schema.php and/or elsewhere to disable auto-increment? I need just a plain, old primary key without it. The only other solution I can imagine is adding on a separate manifest number field and changing foreign keys in a half dozen other tables. A bit wasteful and not as intuitive.

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  • Running sites on "localhost" is extremeley slow.

    - by seanxe
    Hello all, Having real trouble using my local host to test sites. It runs extremely slow! Sometimes up to a minute to load a page. I'm using firefox and the sites i'm testing run fine on other developers in my office local machines/ on the production server. I've gone through the normal things :- Disabled IPv6 Not running in debug mood Put the site in the highest app pool (High Isolated) on IIS 6. Taking of firewalls etc. The problem only seems to occur when hitting pages which contain some form of .net code in the code-behind. Appreciate that this a little bit of a vague topic / stab in the dark but would appreciate any sort of advice - it's horrible waiting a minute each refresh to try out a change! Cheers, Sean.

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  • Unable to debug ASP.NET Applicatation using VS 2008 on IIS 7 running on Windows 7 x64

    - by rsteckly
    Hi, I've been trying to debug an existing asp.net web application that requires me to debug against an IIS website. I've installed the app and can navigate to it on localhost. However, when I start VS 2008 as an Administrator and try to debug it, I get a message "Unable to start debugging on the web server. The IIS worker process for the launched URL is not currently running." I've looked through some of the help file contents and can't seem to figure out what is going on. Clearly, the IIS worker process IS running, since I can navigate to the site locally without VS open. My boss has suggested that it might be because my OS is 64 bit. Any ideas?

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  • Blackbery Axis IP camera Suggestions

    - by user440541
    hello Everyone well i am making an application of IP camera for Blackberry all models. i have gathered all the information regarding coding. now i just wanted a bit of ur help. please guide me through some of the APIs for java through which i could implement live Ip camera video streaming in blackberry. and also some of the references through which i could get help . m new in here pleae guide me thru this everyone. i will be v thankful to u . regards. Thanks a bunch in advance.....

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  • The easiest way to draw an image?

    - by Benno
    Assume you want to read an image file in a common file format from the hard drive, change the color of one pixel, and display the resulting image to the screen, in C++. Which (open-source) libraries would you recommend to accomplish the above with the least amount of code? Alternatively, which libraries would do the above in the most elegant way possible? A bit of background: I have been reading a lot of computer graphics literature recently, and there are lots of relatively easy, pixel-based algorithms which I'd like to implement. However, while the algorithm itself would usually be straightforward to implement, the necessary amount of frame-work to manipulate an image on a per-pixel basis and display the result stopped me from doing it.

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