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  • Is stack address shared by Heap addresses ??

    - by numerical25
    I read On most operating systems, the addresses in memory starts from highest to lowest. So I am wondering if the heap, stack, and global memory all fall under the same ordering..? If I created... pointerType* pointer = new pointerType //creates memory address 0xffffff And then created a local varible on the stack localObject object would localObjects address be 0xfffffe Or is heap and stack ordering completely different.

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  • svn doesnt commit my added files?

    - by ajsie
    i have checked out files from my svn repository to a local project folder. then i add 1 file in the project folder but when i run svn commit -m "added a file" it doesnt commit anything! only when i change in the original files, not adding new ones. how comes? cause i want it to add new files to the repository. thanks!

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  • DOM Storage and locks

    - by user535759
    Since DOM storage and its equivalencies persist in between tabs and windows, I've thought about using it for message passing. The problem is that fetch and store are different operations, and therefore not atomic. I have models that rely on UUID generation, conflict resolutions, and beaconing to do the small subset of what I need to do, but my real question is this: Since the local storage is a shared memory resource, what are the locking mechanisms available for mutual access?

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  • Linux configurations that would affect Java memory usage?

    - by wmacura
    Hi, Background: I have a set of java background workers I start as part of my webapp. I develop locally on Ubuntu 10.10 and deploy to an Ubuntu 10.04LTS server (a media temple (ve) instance). They're both running the same JVM: Sun JVM 1.6.0_22-b04. As part of the initialization script each worker is started with explicit Xmx, Xms, and XX:MaxPermGen settings. Yet somehow locally all 10 workers use 250MB, while on the server they use more than 2.7GB. I don't know how to begin to track this down. I thought the Ubuntu (and thus, kernel) version might make a difference, but I tried an old 10.04 VM and it behaves as expected. I've noticed that the machine does not seem to ever use memory for buffer or cache (according to htop), which seems a bit strange, but perhaps normal for a server? (edited) Some info: (server) root@devel:/app/axir/target# uname -a Linux devel 2.6.18-028stab069.5 #1 SMP Tue May 18 17:26:16 MSD 2010 x86_64 GNU/Linux (local) wiktor@beastie:~$ uname -a Linux beastie 2.6.35-25-generic #44-Ubuntu SMP Fri Jan 21 17:40:44 UTC 2011 x86_64 GNU/Linux (edited) Comparing PS output: (ps -eo "ppid,pid,cmd,rss,sz,vsz") PPID PID CMD RSS SZ VSZ (local) 1588 1615 java -cp axir-distribution. 25484 234382 937528 1615 1631 java -cp /home/wiktor/Code/ 83472 163059 652236 1615 1657 java -cp /home/wiktor/Code/ 70624 89135 356540 1615 1658 java -cp /home/wiktor/Code/ 37652 77625 310500 1615 1669 java -cp /home/wiktor/Code/ 38096 77733 310932 1615 1675 java -cp /home/wiktor/Code/ 37420 61395 245580 1615 1684 java -cp /home/wiktor/Code/ 38000 77736 310944 1615 1703 java -cp /home/wiktor/Code/ 39180 78060 312240 1615 1712 java -cp /home/wiktor/Code/ 38488 93882 375528 1615 1719 java -cp /home/wiktor/Code/ 38312 77874 311496 1615 1726 java -cp /home/wiktor/Code/ 38656 77958 311832 1615 1727 java -cp /home/wiktor/Code/ 78016 89429 357716 (server) 22522 23560 java -cp axir-distribution. 24860 285196 1140784 23560 23585 java -cp /app/axir/target/a 100764 161629 646516 23560 23667 java -cp /app/axir/target/a 72408 92682 370728 23560 23670 java -cp /app/axir/target/a 39948 97671 390684 23560 23674 java -cp /app/axir/target/a 40140 81586 326344 23560 23739 java -cp /app/axir/target/a 39688 81542 326168 They look very similar. In fact, the question now is why, if I add up the virtual memory usage on the server (3.2GB) does it more closely reflect 2.4GB of memory used (according to free), yet locally the virtual memory used adds up to a much more substantial 4.7GB but only actually uses ~250MB. It seems that perhaps memory isn't being shared as aggressively. (if that's even possible) Thank you for your help, Wiktor

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  • How to retrieve the currently searched for text in vim?

    - by Paul Wicks
    For example, I have some code and I use "*" to search for something within that code. Not finding what I want in that file, I'd like to use something like ack or grep to search for it within the local directory. I know I can do :! ack whatever to do the search from within vim, but what I'd like to know is is there a way to replace whatever with the currently searched for word within vim.

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  • Problem While Deploying Application in GlassFish

    - by Sarang
    I have to deploy an application named "mrs-ws-server.war" in glassfish. I did it using both : 1) Package File to be uploaded to the server 2) Local package File or Directory at the address : http://localhost:42328/common/index.jsf It generates the following error : Exception while loading the app : java.lang.Exception: java.lang.IllegalStateException: ContainerBase.addChild: start: org.apache.catalina.LifecycleException: org.springframework.transaction.CannotCreateTransactionException: Could not open Hibernate Session for transaction; nested exception is org.hibernate.exception.GenericJDBCException: Cannot open connection What should be the solution for the same ?

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  • Problem with heroku db:pull while at work.

    - by shopfiber
    When I try to pull down a database while at work I get the following error: :>heroku db:pull Auto-detected local database: sqlite://db/development.sqlite3 Bad credentials given for http://heroku:[hidden]@taps.heroku.com Note that when I am at home I am able to run this command just fine. I wanted to know if you have any suggestions for common reasons I would get this error.

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  • Does iPhone SDK Objective C support functions inside of functions?

    - by Moshe
    I know that javascript, for example supports functions inside of functions, like so: function doSomething(){ function doAnothingThing(){ //this function is redefined every time doSomething() is called and only exists inside doSomething() } //you can also stick it inside of conditions if(yes){ function doSomethingElse(){ //this function only exists if yes is true } } } Does objective-c support this? Theoretical example: -(void) doSomething:(id) sender{ -(void) respondToEvent: (id) sender{ //theoretically? ... please? } } BONUS: What is the proper term for a "local" function?

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  • How do I access a file share programattically

    - by Mykroft
    I have a windows forms app running on a machine that is not on a domain, that needs to be able to move a file from the local filesystem to a UNC path. I have a username and password for that path. I was wondering is there any way to do this directly with out execing the net.exe command? Ideally I wouldn't have to map a drive.

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  • choosing an image locally from http url and serving that image without a server round trip

    - by serverman
    Hi folks I am a complete novice to Flash (never created anything in flash). I am quite familiar with web applications (J2EE based) and have a reasonable expertise in Javascript. Here is my requirement. I want the user to select (via an html form) an image. Normally in the post, this image would be sent to server and may be stored there to be served later. I do not want that. I want to store this image locally and then serve it via HTTP to the user. So, the flow is: 1. Go to the "select image url":mywebsite.com/selectImage Browse the image and select the image This would transfer control locally to some code running on the client (Javascript or flash), which would then store the image locally at some place on the client machine. Go to the "show image url": mywebsite.com/showImage This would eventually result in some client code running on the browser that retrieves the image and renders it (without any server round trips.) I considered the following options: Use HTML5 local storage. Since I am a complete novice to flash, I looked into this. I found that it is fairly straightforward to store and retrieve images in javascript (only strings are allowed but I am hoping storing base64 encoded strings would work at least for small images). However, how do I serve the image via http url that points to my server without a server round trip? I saw the interesting article at http://hacks.mozilla.org/category/fileapi/ but that would work only in firefox and I need to work on all latest browsers (at least the ones supporting HTML5 local storage) Use flash SharedObjects. OK, this would have been good - the only thing is I am not sure where to start. Snippets of actionscripts to do this are scattered everywhere but I do not know how to use those scripts in an actual html page:) I do not need to create any movies or anything - just need to store an image and serve it locally. If I go this route, I would also use it to store other "strings" locally. If you suggest this, please give me the exact steps (could be pointers to other web sites) on how to do this. I would like to avoid paying for any flash development environment software ideally:) Thank you!

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  • MSSQL using SSH-tunnel from Visual Studio

    - by pbt
    Hi, I recently contacted a web host regarding support for external database access to a Microsoft SQL Database included in a package they offer. They replied saying that it is only possible with an SSH-tunnel. Is it possible to connect to a MS SQL database in Visual Studio using an SSH-tunnel? It is important for me to be able to access the database from my local machine (for debugging, generating LINQ classes, editing tables, etc). Or, how should I go about working with their database?

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  • How do I parse an HTML website using Perl?

    - by Nano HE
    Could you please give me some suggestions on how to parse HTML in Perl? I plan to parse the keywords(including URL links) and save them to a MySQL database. I am using Windows XP. Also, do I first need to download some website pages to the local hard drive with some offline Explorer tool? If I do, could you point me to a good download tool?

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  • google app engine proxy workaround

    - by Lumpy
    I am trying to build a google app engine app in Java. The app is trying to get information from another site. On my computer I am behind a firewall and need to connect to the site through a proxy. Google app engine does not allow the use of java.net.proxy. Is there a way to configure eclipse so it knows that when I use URL.getContent() my local host will connect to that url through a proxy??

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  • Error opening crystal report in excel format

    - by user337098
    We have an application written in VB.NET 2003 which has built in Crystal reports. When we install the application on Windows 2008 server we get the following error while trying to open crystal report in excel format Error is : Error in File :"....rpt" Error detected by export DLL. The report opens up fine in PDF on server Opeing report in Excel works fine on my local(development) machine...But this error is thrown on server... Kindly help me resolve this issue and how to fix it?..

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  • How to manually install an artifact in Maven 2?

    - by liangzan
    Hi, I've encountered some errors when I tried to install an artifact manually with Maven 2. I wanted to install a jar from a local directory with the command mvn install:install-file -Dfile=jta-1.0.1B.jar But Maven gave a build error which reads like: Invalid task '.01B.jar': you must specify a valid lifecycle phase, or a goal in the format plugin:goal or pluginGroupId:pluginArtifactId:pluginVersion:goal Is there a mistake with my command?

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  • C# http network requests with Windows service

    - by Omegavirus
    hello, today i wrote a windows service which needs to send regular http requests to a server. the problem is that the service runs under the "SYSTEM" account as local service and as such a type of service it isn't allowed to access the network.. for installing the service i use this class: http://dl.dropbox.com/u/152585/ServiceInstaller.cs is there a way to send http requests in a .net c# windows service and get the http response? thanks. :)

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