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  • How to automatically monitor and limit resource of process on Windows

    - by Nat
    On Linux, normally I use ptrace function to trace all syscall, and kill the process if the it tries to do anything harmful to my machine, such as system("shutdown -s -t 00") or so. Is there a way for me to do this on Windows? EDIT: I want to write Sandbox program to limit time and memory usage of its child that can work on both Windows and Linux, and now it can only run on Linux via ptrace

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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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  • Most suitable collection for multithreading requests?

    - by Raj Aththanayake
    I have ~10,000 records would like to keep in a collection in memory and execute LINQ queries against it. This collection should be available for all the users in the application domain and can access concurrently. I’m looking for a .NET collection that supports multithreading can query asynchronously and efficiently without any threading issues. Any suggestions on deciding a collection for this?

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  • HTTPS only on specific page with .htaccess

    - by JamWaffles
    Hi all I have a URL such as http://www.domain.com/index.php?p=register. I want to redirect that to use HTTPS (SSL) with .htaccess, but only on this, and a couple of other pages (the login page, etc), but not the entire site. The URLs don't point to directories, but are used to dynamically include different files. Can someone give me a pointer or an example of how to get a single page redirect to HTTPS please? Thanks, James

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  • Does python have a session variable concept???

    - by gizgok
    I have a datetime.date variable in python.I need to pass it to a function do operations according to the date given and then increment the date for the next set of operations.The problem is I have to do the operations in diff pages and hence I need the date as a variable which can go from page to page. Can we do this in python.......

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  • Issue with blocking the UI during a onchange request - prevents other event from firing.

    - by jfrobishow
    I am having issues with jQuery blockUI plugins and firing two events that are (I think, unless I am loosing it) unrelated. Basically I have textboxes with onchange events bound to them. The event is responsible for blocking the UI, doing the ajax call and on success unblocking the UI. The ajax is saving the text in memory. The other control is a button with on onclick event which also block the UI, fire an ajax request saving what's in memory to the database and on success unblock the UI. Both of these work fine separately. The issue arise when I trigger the onchange by clicking on the button. Then only the onchange is fired and the onclick is ignored. I can change the text in the checkbox, click on the link and IF jQuery.blockUI() is present the onchange alone is fired and the save is never called. If I remove the blockUI both function are called. Here's a fully working example where you can see the issue. Please note the setTimeout are there when I was trying to simulate the ajax delay but the issue is happening without it. <html> <head> <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script> <script src="http://github.com/malsup/blockui/raw/master/jquery.blockUI.js?v2.31"></script> <script> function doSomething(){ $.blockUI(); alert("doing something"); //setTimeout(function(){ $.unblockUI(); //},500); } function save(){ $.blockUI(); //setTimeout(function(){ alert("saving"); $.unblockUI(); //}, 1000); } </script> </head> <body> <input type="text" onchange="doSomething();"> <a href="#" onclick="save()">save</a> </body> </html>

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  • Replacement for java.util.zip for streaming usage?

    - by evilfred
    java.util.zip sucks for stream compression. The longer you leave an Inflator/Deflator open without calling end(), the more native memory it uses up. This is a known issue: http://bugs.sun.com/view_bug.do?bug_id=4797189 which nobody seems to care about fixing. What is a good alternative? Preferably one that is free and is still actively supported by its developers.

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  • Find out how much storage a row is taking up in the database

    - by Vaccano
    Is there a way to find out how much space (on disk) a row in my database takes up? I would love to see it for SQL Server CE, but failing that SQL Server 2008 works (I am storing about the same data in both). The reason I ask is that I have a Image column in my SQL Server CE db (it is a varbinary[max] in the SQL 2008 db) and I need to know now many rows I can store before I max out the memory on my device.

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  • Dynamically add tab sheets to page control and embed a form?

    - by Jerry Dodge
    I'm working on a module which consists of a page control. By default, this page control (TPageControl) shouldn't have any tab sheets (TTabSheet), but upon initialization, it should dynamically insert these pages and embed a form inside of it. The issue comes with knowing how to insert a tab sheet into the page control. How do I create this? And once it's created, along with the forms inside each one, how do I iterate through them to destroy the forms?

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  • Does ASP.NET Make Request Scheduling Decisions Based Upon SessionID?

    - by Mike Murphy
    I know that a properly implemented SessionStateStoreProvider maintains an exclusive lock on session data for the duration of a request. However, considering that multiple requests could arrive simultaneously (e.g. via IFRAMEs) all but one would be able to make forward progress. All the other requests would block for a bit and reduce the number of worker threads available during that time. It seems if ASP.NET "peeked" at the session IDs on the requests early on, it could avoid running requests simultaneously that were on the same session. This would improve throughput under load for pages that didn't want to give up using IFRAMEs. This seems plausible enough that it might be true.

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  • Should I make my MutexLock volatile?

    - by sje397
    I have some code in a function that goes something like this: void foo() { { // scope the locker MutexLocker locker(&mutex); // do some stuff.. } bar(); } The function call bar() also locks the mutex. I am having an issue whereby the program crashes (for someone else, who has not as yet provided a stack trace or more details) unless the mutex lock inside bar is disabled. Is it possible that some optimization is messing around with the way I have scoped the locker instance, and if so, would making it volatile fix it? Is that a bad idea? Thanks.

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  • My app crashes on Iphone SDK 3.2

    - by Mladen
    Hi Guys, My app worked ok on iPhone SDK 3.1. However, when I try to run it in 3.2 simulator, I get the following error and it crashes: bool _WebTryThreadLock(bool), 0x5148280: Tried to obtain the web lock from a thread other than the main thread or the web thread. This may be a result of calling to UIKit from a secondary thread. Crashing now... Program received signal: “EXC_BAD_ACCESS”. When I debug it, it leads me to this peace of code: - (void)LoginViewToCheckView:(id)sender { CheckViewController *tempTestController = [[CheckViewController alloc] initWithStyle:UITableViewStyleGrouped]; [tempTestController setDelegate:self]; [self setCheckViewController: tempTestController]; [tempTestController release]; [navigationController pushViewController:checkViewController animated:YES];} Other thing worth mentioning is maybe that I am calling this function from a separate thread. Any ideas what could be wrong?

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  • ReWrite Rules Issue

    - by Jacob Clark
    I seem to be having an issue with my Apache Rewrites RewriteEngine on RewriteBase / RewriteRule ^wordpress/?$ / [NC,L,R=301] RewriteRule ^/$ wordpress/ [NC,L] I simply need to remove /wordpress from the URL as I have pages within Wordpress I want to be seen as the main directory At the moment the urls are domain.com/wordpress/blog I'd rather not have /wordpress, rather domain.com/blog Any help?

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  • ms access negative page numbers

    - by FrustratedWithFormsDesigner
    I have an access report that generates 36505 pages (un filtered, and about half of each page is taken up by group headers and page headers) , though the footer at the bottom of the report page says "36505 of -29031". This looks like an overflow problem maybe, though I'm confused how it got the current page number of the last page OK, but failed to get total page count. Has anyone dealt with this before?

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  • JQuery class selectors like $(.someClass) are case sensitive?

    - by Justin Grant
    Given this HTML: <div class="OpenIDSelector">some text</div> Why does this JQuery selector match it on some browsers and some pages, but not on others? $('.OpenIdSelector) NOTE: I ran into this problem and solved it myself, but it was annoying and I didn't find it on StackOverflow already, so I'm posting it as a Q&A pair so someone else won't waste an hour like I did.

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  • Using ActiveRecord caching library in Heroku

    - by zetarun
    Hi all, I'm studying how to use caching in Heroku for my Rails app. HTTP cache powered by Varnish is superb and I'll use it in all pages without user info but I also want to use a kind of ActiveRecord caching with Memcached using "high livel" plugins such as cache_fu or cache-money...but it seems that Heroku supports only the memcached gem (http://docs.heroku.com/memcache) and it's a very low level Memcachad API... Do you have any other solutions? Thx.

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