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• I am receiving a message saying I have duplicate sources but I can't seem to find a duplicate of the line described, any ideas?

  - by David Griffiths

  I receive this meassage when I run sudo apt-get update in the terminal:- Duplicate sources.list entry http://archive.canonical.com/ubuntu/ precise/partner i386 Packages (/var/lib/apt/lists/archive.canonical.com_ubuntu_dists_precise_partner_binary-i386_Packages) So i ran the command gksu gedit /etc/apt/sources.list and checked the source to find there was no duplicate, not that I can see anyway. Here is the source:- # deb cdrom:[Ubuntu 12.04 LTS _Precise Pangolin_ - Release i386 (20120423)]/ precise main restricted deb-src http://archive.ubuntu.com/ubuntu precise main restricted #Added by software-properties # See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to # newer versions of the distribution. deb http://gb.archive.ubuntu.com/ubuntu/ precise main restricted deb-src http://gb.archive.ubuntu.com/ubuntu/ precise restricted main multiverse universe #Added by software-properties ## Major bug fix updates produced after the final release of the ## distribution. deb http://gb.archive.ubuntu.com/ubuntu/ precise-updates main restricted deb-src http://gb.archive.ubuntu.com/ubuntu/ precise-updates restricted main multiverse universe #Added by software-properties ## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu ## team. Also, please note that software in universe WILL NOT receive any ## review or updates from the Ubuntu security team. deb http://gb.archive.ubuntu.com/ubuntu/ precise universe deb http://gb.archive.ubuntu.com/ubuntu/ precise-updates universe ## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu ## team, and may not be under a free licence. Please satisfy yourself as to ## your rights to use the software. Also, please note that software in ## multiverse WILL NOT receive any review or updates from the Ubuntu ## security team. deb http://gb.archive.ubuntu.com/ubuntu/ precise multiverse deb http://gb.archive.ubuntu.com/ubuntu/ precise-updates multiverse ## N.B. software from this repository may not have been tested as ## extensively as that contained in the main release, although it includes ## newer versions of some applications which may provide useful features. ## Also, please note that software in backports WILL NOT receive any review ## or updates from the Ubuntu security team. deb http://gb.archive.ubuntu.com/ubuntu/ precise-backports main restricted universe multiverse deb-src http://gb.archive.ubuntu.com/ubuntu/ precise-backports main restricted universe multiverse #Added by software-properties deb http://security.ubuntu.com/ubuntu precise-security main restricted deb-src http://security.ubuntu.com/ubuntu precise-security restricted main multiverse universe #Added by software-properties deb http://security.ubuntu.com/ubuntu precise-security universe deb http://security.ubuntu.com/ubuntu precise-security multiverse ## Uncomment the following two lines to add software from Canonical's ## 'partner' repository. ## This software is not part of Ubuntu, but is offered by Canonical and the ## respective vendors as a service to Ubuntu users. deb http://archive.canonical.com/ubuntu precise partner # deb-src http://archive.canonical.com/ubuntu precise partner ## Uncomment the following two lines to add software from Ubuntu's ## 'extras' repository. ## This software is not part of Ubuntu, but is offered by third-party ## developers who want to ship their latest software. # deb http://extras.ubuntu.com/ubuntu precise main # deb-src http://extras.ubuntu.com/ubuntu precise main deb http://repository.spotify.com stable non-free I can see there are two lines of deb http://archive.canonical.com/ubuntu precise partner but one has #deb-src at the beginning of it. Hashed out no? I'm quite new to linux OS and have little to none sourced editing skills so any help would be most appreciated. Thank you:)

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• Rails - How to use modal form to add object in one model, then reflect that change on main page?

  - by Jim

  I'm working on a Rails app and I've come across a situation where I'm unsure of the cleanest way to proceed. I posted a question on SO with code samples and such - it has received no answers, and the more I think about the problem, the more I think I might be approaching this the wrong way. (See the SO question at http://stackoverflow.com/questions/9521319/how-to-reference-form-when-rendering-partial-from-js-erb-file) So, in more of a generic architecture type question: Right now I have a form where a user can add a new recipe. The form also allows the user to select ingredients (it uses a collection_select which contains Ingredient.all). The catch is - I'd like the user to be able to add a new ingredient on the fly, without leaving the recipe form. Using a hidden div and some jQuery/AJAX, I have a link the user can click to popup a modal form containing ingredients/new.html.erb which is a simple form. When that form is submitted, I call ingredients/create.js.erb to validate the ingredient was saved and hide the modal div. Now I am back to my recipe form, but my collection_select hasn't updated. It seems I have a few choices here: try and re-render the collection_select portion of the form so it grabs a new list of ingredients. This was the method I was attempting when I wrote the SO question. The problem I run into is the partial I use for the collection_select needs the parent form passed in, and when I try and render from the JS file I don't know how to pass it the form object. Reload the recipe form. This works (the collection_select now contains the new ingredient), but the user loses any progress they made on the recipe form. I would need a way to persist the form data - I thought about manually passing the values back and forth, but that is sloppy and there has to be a better way... Try and manually insert the tags using jQuery - this would be simple, but because I'm allowing for multiple ingredients to be added, I can't be certain what ID to target. Now, I can't be the only person to have this issue - so is there an easier way I'm missing? I like option 2 above, but I don't know if there's an easy way to grab the entire params hash as if I had submitted the main recipes form. Hopefully someone can point me in the right direction so I can find an answer to this... If this doesn't make any sense at all, let me know - I can post code samples if you want, but most of the pertinent code is up on the SO question. Thanks!

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• Multithreading in Windows Phone 7 emulator: A bug

  - by Laurent Bugnion

  Multithreading is supported in Windows Phone 7 Silverlight applications, however the emulator has a bug (which I discovered and was confirmed to me by the dev lead of the emulator team): If you attempt to start a background thread in the MainPage constructor, the thread never starts. The reason is a problem with the emulator UI thread which doesn’t leave any time to the background thread to start. Thankfully there is a workaround (see code below). Also, the bug should be corrected in a future release, so it’s not a big deal, even though it is really confusing when you try to understand why the *%&^$£% thread is not &$%&%$£ starting (that was me in the plane the other day ;) This code does not work: public partial class MainPage : PhoneApplicationPage { public MainPage() { InitializeComponent(); SupportedOrientations = SupportedPageOrientation.Portrait | SupportedPageOrientation.Landscape; var counter = 0; ThreadPool.QueueUserWorkItem(o => { while (true) { Dispatcher.BeginInvoke(() => { textBlockListTitle.Text = (counter++).ToString(); }); } }); } } This code does work: public MainPage() { InitializeComponent(); SupportedOrientations = SupportedPageOrientation.Portrait | SupportedPageOrientation.Landscape; var counter = 0; ThreadPool.QueueUserWorkItem(o => { while (true) { Dispatcher.BeginInvoke(() => { textBlockListTitle.Text = (counter++).ToString(); }); // NOTICE THIS LINE!!! Thread.Sleep(0); } }); } Note that even if the thread is started in a later event (for example Click of a Button), the behavior without the Thread.Sleep(0) is not good in the emulator. As of now, i would recommend always sleeping when starting a new thread. Happy coding: Laurent   Laurent Bugnion (GalaSoft) Subscribe | Twitter | Facebook | Flickr | LinkedIn

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• what is the best way to use loops to detect events while the main loop is running?

  - by yao jiang

  I am making an "game" that has pathfinding using pygame. I am using Astar algo. I have a main loop which draws the whole map. In the loop I check for events. If user press "enter" or "space", random start and end are selected, then animation starts and it will try to get from start to end. My draw function is stupid as hell right now, it works as expected but I feel that I am doing it wrong. It'll draw everything to the end of the animation. I am also detecting events in there as well. What is a better way of implementing the draw function such that it will draw one "step" at a time while checking for events? animating = False; while loop: check events: if not animating: # space or enter press will choose random start/end coords if enter_pressed or space_pressed: start, end = choose_coords route = find_route(start, end) draw(start, end, grid, route) else: # left click == generate an event to block the path # right click == user can choose a new destination if left_mouse_click: gen_event() reroute() elif right_mouse_click: new_end = new_end() new_start = current_pos() route = find_route(new_start, new_end) draw(new_start, new_end, grid, route) # draw out the grid def draw(start, end, grid, route_coord): # draw the end coords color = red; pick_image(screen, color, width*end[1],height*end[0]); pygame.display.flip(); # then draw the rest of the route for i in range(len(route_coord)): # pausing because we want animation time.sleep(speed); # get the x/y coords x,y = route_coord[i]; event_on = False; if grid[x][y] == 2: color = green; elif grid[x][y] == 3: color = blue; for event in pygame.event.get(): if event.type == pygame.MOUSEBUTTONDOWN: if event.button == 3: print "destination change detected, rerouting"; # get mouse position, px coords pos = pygame.mouse.get_pos(); # get grid coord c = pos[0] // width; r = pos[1] // height; grid[r][c] = 4; end = [r, c]; elif event.button == 1: print "user generated event"; pos = pygame.mouse.get_pos(); # get grid coord c = pos[0] // width; r = pos[1] // height; # mark it as a block for now grid[r][c] = 1; event_on = True; if check_events([x,y]) or event_on: # there is an event # mark it as a block for now grid[y][x] = 1; pick_image(screen, event_x, width*y, height*x); pygame.display.flip(); # then find a new route new_start = route_coord[i-1]; marked_grid, route_coord = find_route(new_start, end, grid); draw(new_start, end, grid, route_coord); return; # just end draw here so it wont throw the "index out of range" error elif grid[x][y] == 4: color = red; pick_image(screen, color, width*y, height*x); pygame.display.flip(); # clear route coord list, otherwise itll just add more unwanted coords route_coord_list[:] = [];

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• POC of take screenshot from XP virtual machine of windows 7 main machine.

  - by Svisstack

  Hello, I searching any ideas of take screenshot of main machine on windows 7 from virtual machine on windows XP, have any ideas or proof on concept to can do this? Maybe from integration drivers or something? I don't require any code snipets, must have only POC of can't do this. EDIT: Can be process integration idea? (dump any process memory on main machine from virtualized)

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• aptitude update gives 404's for intrepid

  - by dotjoe

  I'm having issues trying to update my packages. I haven't used this server since last September and now I'm getting 404 errors on all the intrepid repos. How do I fix this? Thanks aptitude update Err http://security.ubuntu.com intrepid-security/main Packages 404 Not Found [IP: 91.189.92.166 80] Err http://security.ubuntu.com intrepid-security/restricted Packages 404 Not Found [IP: 91.189.92.166 80] Err http://security.ubuntu.com intrepid-security/main Sources 404 Not Found [IP: 91.189.92.166 80] Err http://security.ubuntu.com intrepid-security/restricted Sources 404 Not Found [IP: 91.189.92.166 80] Err http://security.ubuntu.com intrepid-security/universe Packages 404 Not Found [IP: 91.189.92.166 80] Err http://security.ubuntu.com intrepid-security/universe Sources 404 Not Found [IP: 91.189.92.166 80] Ign http://us.archive.ubuntu.com intrepid-updates/multiverse Packages Ign http://us.archive.ubuntu.com intrepid-updates/multiverse Sources Err http://us.archive.ubuntu.com intrepid/main Packages 404 Not Found [IP: 91.189.88.31 80] Err http://us.archive.ubuntu.com intrepid/restricted Packages 404 Not Found [IP: 91.189.88.31 80] Err http://us.archive.ubuntu.com intrepid/main Sources 404 Not Found [IP: 91.189.88.31 80] Err http://security.ubuntu.com intrepid-security/multiverse Packages 404 Not Found [IP: 91.189.92.166 80] Err http://us.archive.ubuntu.com intrepid/restricted Sources 404 Not Found [IP: 91.189.88.31 80] Err http://us.archive.ubuntu.com intrepid/universe Packages 404 Not Found [IP: 91.189.88.31 80] Err http://us.archive.ubuntu.com intrepid/universe Sources 404 Not Found [IP: 91.189.88.31 80] Err http://us.archive.ubuntu.com intrepid/multiverse Packages 404 Not Found [IP: 91.189.88.31 80] Err http://us.archive.ubuntu.com intrepid/multiverse Sources 404 Not Found [IP: 91.189.88.31 80] Err http://us.archive.ubuntu.com intrepid-updates/main Packages 404 Not Found [IP: 91.189.88.31 80] Err http://security.ubuntu.com intrepid-security/multiverse Sources 404 Not Found [IP: 91.189.92.166 80] Err http://us.archive.ubuntu.com intrepid-updates/restricted Packages 404 Not Found [IP: 91.189.88.31 80] Err http://us.archive.ubuntu.com intrepid-updates/main Sources 404 Not Found [IP: 91.189.88.31 80] Err http://us.archive.ubuntu.com intrepid-updates/restricted Sources 404 Not Found [IP: 91.189.88.31 80] Err http://us.archive.ubuntu.com intrepid-updates/universe Packages 404 Not Found [IP: 91.189.88.31 80] Err http://us.archive.ubuntu.com intrepid-updates/universe Sources 404 Not Found [IP: 91.189.88.31 80] Err http://us.archive.ubuntu.com intrepid-updates/multiverse Packages 404 Not Found [IP: 91.189.88.31 80] Err http://us.archive.ubuntu.com intrepid-updates/multiverse Sources 404 Not Found [IP: 91.189.88.31 80] Reading package lists... sources.list # # deb cdrom:[Ubuntu-Server 8.10 _Intrepid Ibex_ - Release i386 (20081028.1)]/ intrepid main restricted # deb cdrom:[Ubuntu-Server 8.10 _Intrepid Ibex_ - Release i386 (20081028.1)]/ intrepid main restricted # See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to # newer versions of the distribution. deb http://us.archive.ubuntu.com/ubuntu/ intrepid main restricted deb-src http://us.archive.ubuntu.com/ubuntu/ intrepid main restricted ## Major bug fix updates produced after the final release of the ## distribution. deb http://us.archive.ubuntu.com/ubuntu/ intrepid-updates main restricted deb-src http://us.archive.ubuntu.com/ubuntu/ intrepid-updates main restricted ## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu ## team. Also, please note that software in universe WILL NOT receive any ## review or updates from the Ubuntu security team. deb http://us.archive.ubuntu.com/ubuntu/ intrepid universe deb-src http://us.archive.ubuntu.com/ubuntu/ intrepid universe deb http://us.archive.ubuntu.com/ubuntu/ intrepid-updates universe deb-src http://us.archive.ubuntu.com/ubuntu/ intrepid-updates universe ## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu ## team, and may not be under a free licence. Please satisfy yourself as to ## your rights to use the software. Also, please note that software in ## multiverse WILL NOT receive any review or updates from the Ubuntu ## security team. deb http://us.archive.ubuntu.com/ubuntu/ intrepid multiverse deb-src http://us.archive.ubuntu.com/ubuntu/ intrepid multiverse deb http://us.archive.ubuntu.com/ubuntu/ intrepid-updates multiverse deb-src http://us.archive.ubuntu.com/ubuntu/ intrepid-updates multiverse ## Uncomment the following two lines to add software from the 'backports' ## repository. ## N.B. software from this repository may not have been tested as ## extensively as that contained in the main release, although it includes ## newer versions of some applications which may provide useful features. ## Also, please note that software in backports WILL NOT receive any review ## or updates from the Ubuntu security team. # deb http://us.archive.ubuntu.com/ubuntu/ intrepid-backports main restricted universe multiverse # deb-src http://us.archive.ubuntu.com/ubuntu/ intrepid-backports main restricted universe multiverse ## Uncomment the following two lines to add software from Canonical's ## 'partner' repository. This software is not part of Ubuntu, but is ## offered by Canonical and the respective vendors as a service to Ubuntu ## users. # deb http://archive.canonical.com/ubuntu intrepid partner # deb-src http://archive.canonical.com/ubuntu intrepid partner deb http://us.archive.ubuntu.com/ubuntu/ intrepid-security main restricted deb-src http://us.archive.ubuntu.com/ubuntu/ intrepid-security main restricted deb http://us.archive.ubuntu.com/ubuntu/ intrepid-security universe deb-src http://us.archive.ubuntu.com/ubuntu/ intrepid-security universe deb http://us.archive.ubuntu.com/ubuntu/ intrepid-security multiverse deb-src http://us.archive.ubuntu.com/ubuntu/ intrepid-security multiverse

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• The calling thread must be STA, because many UI components require this error In WPF?

  - by Rev

  Hi. I make pop-up message for my application. this form is on wpf, and in the a thread i check a value and for some result , I show that pop-up to show message. In the thread when I create pop-up class(type of WPF window class) an error throw by pop-up Contractor. "The calling thread must be STA, because many UI components require this" What do I do?

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• Glassfish v3 / JNDI entry cannot be found problems!

  - by REMP

  I've been having problems trying to call an EJB's method from a Java Application Client. Here is the code. EJB Remote Interface package com.test; import javax.ejb.Remote; @Remote public interface HelloBeanRemote { public String sayHello(); } EJB package com.test; import javax.ejb.Stateless; @Stateless (name="HelloBeanExample" , mappedName="ejb/HelloBean") public class HelloBean implements HelloBeanRemote { @Override public String sayHello(){ return "hola"; } } Main class (another project) import com.test.HelloBeanRemote; import javax.naming.Context; import javax.naming.InitialContext; public class Main { public void runTest()throws Exception{ Context ctx = new InitialContext(); HelloBeanRemote bean = (HelloBeanRemote)ctx.lookup("java:global/Test/HelloBeanExample!com.test.HelloBeanRemote"); System.out.println(bean.sayHello()); } public static void main(String[] args)throws Exception { Main main = new Main(); main.runTest(); } } Well, what is my problem? JNDI entry for this EJB cannot be found! java.lang.NullPointerException at com.sun.enterprise.naming.impl.SerialContext.getRemoteProvider(SerialContext.java:297) at com.sun.enterprise.naming.impl.SerialContext.getProvider(SerialContext.java:271) at com.sun.enterprise.naming.impl.SerialContext.lookup(SerialContext.java:430) at javax.naming.InitialContext.lookup(InitialContext.java:392) at testdesktop.Main.runTest(Main.java:22) at testdesktop.Main.main(Main.java:31) Exception in thread "main" javax.naming.NamingException: Lookup failed for 'java:global/Test/HelloBeanExample!com.test.HelloBeanRemote' in SerialContext [Root exception is javax.naming.NamingException: Unable to acquire SerialContextProvider for SerialContext [Root exception is java.lang.NullPointerException]] at com.sun.enterprise.naming.impl.SerialContext.lookup(SerialContext.java:442) at javax.naming.InitialContext.lookup(InitialContext.java:392) at testdesktop.Main.runTest(Main.java:22) at testdesktop.Main.main(Main.java:31) Caused by: javax.naming.NamingException: Unable to acquire SerialContextProvider for SerialContext [Root exception is java.lang.NullPointerException] at com.sun.enterprise.naming.impl.SerialContext.getProvider(SerialContext.java:276) at com.sun.enterprise.naming.impl.SerialContext.lookup(SerialContext.java:430) ... 3 more Caused by: java.lang.NullPointerException at com.sun.enterprise.naming.impl.SerialContext.getRemoteProvider(SerialContext.java:297) at com.sun.enterprise.naming.impl.SerialContext.getProvider(SerialContext.java:271) ... 4 more Java Result: 1 I've trying with different JNDI entries but nothing works (I got this entries from NetBeans console): INFO: Portable JNDI names for EJB HelloBeanExample : [java:global/Test/HelloBeanExample, java:global/Test/HelloBeanExample!com.test.HelloBeanRemote] INFO: Glassfish-specific (Non-portable) JNDI names for EJB HelloBeanExample : [ejb/HelloBean, ejb/HelloBean#com.test.HelloBeanRemote] So I tried with the following entries but I got the same exception : java:global/Test/HelloBeanExample java:global/Test/HelloBeanExample!com.test.HelloBeanRemote ejb/HelloBean ejb/HelloBean#com.test.HelloBeanRemote I'm using Netbeans 6.8 and Glassfish v3!

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• Mozilla Weave can't sync Firefox. What's wrong?

  - by Mehper C. Palavuzlar

  For the last few days, Mozilla Weave can't sync. Below is the activity log. Any ideas? 2010-05-02 20:47:15 Service.Main WARN Unknown error while downloading metadata record. Aborting sync. 2010-05-02 20:47:15 Service.Main CONFIG Starting backoff, next sync at:Sun May 02 2010 21:16:09 GMT+0300 (GTB Yaz Saati) 2010-05-02 20:47:15 Service.Main DEBUG Exception: aborting sync, remote setup failed No traceback available 2010-05-02 21:16:09 Service.Main DEBUG Idle timer created for sync, will sync after 5 seconds of inactivity. 2010-05-02 21:16:30 Net.Resource DEBUG GET success 200 https://sj-weave03.services.mozilla.com/1.0/mehper/storage/meta/global 2010-05-02 21:16:30 Service.Main DEBUG Weave Version: 1.2.3 Local Storage: 2 Remote Storage: 2 2010-05-02 21:26:50 Net.Resource DEBUG GET success 200 https://sj-weave03.services.mozilla.com/1.0/mehper/info/collections 2010-05-02 21:26:50 Engine.Clients INFO 0 outgoing items pre-reconciliation 2010-05-02 21:26:50 Engine.Clients INFO Records: 0 applied, 0 reconciled, 0 left to fetch 2010-05-02 21:26:50 Engine.Clients DEBUG Total (ms): sync 6, processIncoming 3, uploadOutgoing 0, syncStartup 3, syncFinish 0 2010-05-02 21:26:50 Engine.Bookmarks INFO 0 outgoing items pre-reconciliation 2010-05-02 21:26:50 Engine.Bookmarks INFO Records: 0 applied, 0 reconciled, 0 left to fetch 2010-05-02 21:26:50 Engine.Bookmarks DEBUG Total (ms): sync 13, processIncoming 5, uploadOutgoing 0, syncStartup 3, syncFinish 3 2010-05-02 21:26:50 Engine.Forms INFO 1 outgoing items pre-reconciliation 2010-05-02 21:26:50 Engine.Forms INFO Records: 0 applied, 0 reconciled, 0 left to fetch 2010-05-02 21:26:50 Engine.Forms INFO Uploading all of 1 records 2010-05-02 21:26:50 Collection DEBUG POST Length: 388 2010-05-02 21:27:06 Collection DEBUG POST success 200 https://sj-weave03.services.mozilla.com/1.0/mehper/storage/forms 2010-05-02 21:27:06 Engine.Forms DEBUG Total (ms): sync 15924, processIncoming 3, uploadOutgoing 15918, syncStartup 3, syncFinish 0, createRecord 1 2010-05-02 21:27:06 Engine.History INFO 55 outgoing items pre-reconciliation 2010-05-02 21:27:06 Engine.History INFO Records: 0 applied, 0 reconciled, 0 left to fetch 2010-05-02 21:27:09 Engine.History INFO Uploading all of 55 records 2010-05-02 21:27:09 Collection DEBUG POST Length: 35337 2010-05-02 21:27:32 Collection DEBUG POST success 200 https://sj-weave03.services.mozilla.com/1.0/mehper/storage/history 2010-05-02 21:27:32 Engine.History DEBUG Total (ms): sync 25588, processIncoming 4, uploadOutgoing 25580, syncStartup 3, syncFinish 0, createRecord 2540 2010-05-02 21:27:32 Engine.Passwords INFO 0 outgoing items pre-reconciliation 2010-05-02 21:27:32 Engine.Passwords INFO Records: 0 applied, 0 reconciled, 0 left to fetch 2010-05-02 21:27:32 Engine.Passwords DEBUG Total (ms): sync 8, processIncoming 4, uploadOutgoing 0, syncStartup 4, syncFinish 0 2010-05-02 21:27:32 Engine.Prefs INFO 0 outgoing items pre-reconciliation 2010-05-02 21:27:32 Engine.Prefs INFO Records: 0 applied, 0 reconciled, 0 left to fetch 2010-05-02 21:27:32 Engine.Prefs DEBUG Total (ms): sync 8, processIncoming 3, uploadOutgoing 0, syncStartup 4, syncFinish 0 2010-05-02 21:27:32 Engine.Tabs INFO 1 outgoing items pre-reconciliation 2010-05-02 21:27:32 Engine.Tabs INFO Records: 0 applied, 0 reconciled, 0 left to fetch 2010-05-02 21:27:32 Engine.Tabs INFO Uploading all of 1 records 2010-05-02 21:27:32 Collection DEBUG POST Length: 393 2010-05-02 21:27:54 Collection DEBUG POST success 200 https://sj-weave03.services.mozilla.com/1.0/mehper/storage/tabs 2010-05-02 21:27:54 Engine.Tabs DEBUG Total (ms): sync 21943, processIncoming 3, uploadOutgoing 21936, syncStartup 3, syncFinish 0, createRecord 8 2010-05-02 21:27:54 Service.Main INFO Sync completed successfully 2010-05-02 22:27:53 Service.Main DEBUG Idle timer created for sync, will sync after 5 seconds of inactivity. 2010-05-02 22:28:14 Net.Resource DEBUG GET success 200 https://sj-weave03.services.mozilla.com/1.0/mehper/storage/meta/global 2010-05-02 22:28:14 Service.Main DEBUG Weave Version: 1.2.3 Local Storage: 2 Remote Storage: 2 2010-05-02 22:28:16 Net.Resource DEBUG GET fail 503 https://sj-weave03.services.mozilla.com/1.0/mehper/info/collections 2010-05-02 22:28:16 Service.Main DEBUG Exception: aborting sync, failed to get collections No traceback available 2010-05-02 23:28:15 Service.Main DEBUG Idle timer created for sync, will sync after 5 seconds of inactivity. 2010-05-03 00:26:42 Service.Main DEBUG Exception: Could not acquire lock No traceback available 2010-05-03 00:31:03 RecordMgr DEBUG Failed to import record: App. Quitting JS Stack trace: Res__request(...)@resource.js:208 < Res_get()@resource.js:271 < RecordMgr_import("https://sj-weave03.services.mozilla.com/1.0/mehper/storage/meta/global")@wbo.js:119 < WeaveSvc__remoteSetup()@service.js:824 < ()@service.js:1187 < WrappedNotify()@util.js:114 < WrappedLock()@util.js:86 < WrappedCatch()@util.js:65 < sync(false)@service.js:1146 < ([object Object])@service.js:414 < notify([object XPCWrappedNative_NoHelper])@util.js:629 2010-05-03 00:31:03 Service.Main DEBUG Weave Version: 1.2.3 Local Storage: 2 Remote Storage: 2010-05-03 00:31:03 Service.Main WARN Unknown error while downloading metadata record. Aborting sync. 2010-05-03 00:31:03 Service.Main DEBUG Exception: aborting sync, remote setup failed No traceback available 2010-05-03 17:26:25 Service.Main INFO Loading Weave 1.2.3 2010-05-03 17:26:25 Engine.Bookmarks DEBUG Engine initialized 2010-05-03 17:26:25 Engine.Forms DEBUG Engine initialized 2010-05-03 17:26:25 Engine.History DEBUG Engine initialized 2010-05-03 17:26:25 Engine.Passwords DEBUG Engine initialized 2010-05-03 17:26:25 Engine.Prefs DEBUG Engine initialized 2010-05-03 17:26:25 Engine.Tabs DEBUG Engine initialized 2010-05-03 17:26:25 Engine.Tabs DEBUG Resetting tabs last sync time 2010-05-03 17:26:25 Service.Main INFO Mozilla/5.0 (Windows; U; Windows NT 6.1; tr; rv:1.9.2.3) Gecko/20100401 Firefox/3.6.3 (.NET CLR 3.5.30729) 2010-05-03 17:26:26 Service.Main DEBUG Caching URLs under storage user base: https://sj-weave03.services.mozilla.com/1.0/mehper/ 2010-05-03 17:26:30 Service.Main DEBUG Autoconnecting in 3 seconds 2010-05-03 17:26:36 Service.Main INFO Logging in user mehper 2010-05-03 17:45:46 Service.Main DEBUG Exception: Could not acquire lock No traceback available 2010-05-03 17:53:18 Service.Main DEBUG Exception: Could not acquire lock No traceback available

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• Undefined reference to 'glib'

  - by dali1985

  I would like to parse a config file using glib in Codeblocks which I use. So I want to do exactly the example which is described here first. I have a file named myconfig.cfg and and a code programming.c. I just copy and paste the code to see if glib works but unfortunately it does not work. I did the installation of glib2.0 using sudo apt-get, I found where are the libs in glibs using pkg-config --cflags --libs glib-2.0 and in this path project->Build Options->Compiler Settings-> Other Options I added -I/usr/include/glib-2.0 -I/usr/lib/arm-linuxgnuebihf/glib-2.0/include When I build and run the programming.c I have these errors -------------- Build: Debug in programming --------------- gcc -Wall -g -I/usr/include/glib-2.0 -I/usr/lib/arm-linux-gnueabihf/glib-2.0/include -std=c99 -c /home/pi/Desktop/programming/main.c -o obj/Debug/main.o g++ -o bin/Debug/programming obj/Debug/main.o /usr/lib/libmysqlclient.so.16 obj/Debug/main.o: In function `main': /home/pi/Desktop/programming/main.c:22: undefined reference to `g_key_file_new' /home/pi/Desktop/programming/main.c:26: undefined reference to `g_key_file_load_from_file' /home/pi/Desktop/programming/main.c:28: undefined reference to `g_log' /home/pi/Desktop/programming/main.c:34: undefined reference to `g_slice_alloc' /home/pi/Desktop/programming/main.c:37: undefined reference to `g_key_file_get_string' /home/pi/Desktop/programming/main.c:39: undefined reference to `g_key_file_get_locale_string' /home/pi/Desktop/programming/main.c:41: undefined reference to `g_key_file_get_boolean_list' /home/pi/Desktop/programming/main.c:43: undefined reference to `g_key_file_get_integer_list' /home/pi/Desktop/programming/main.c:45: undefined reference to `g_key_file_get_string_list' /home/pi/Desktop/programming/main.c:47: undefined reference to `g_key_file_get_integer' /home/pi/Desktop/programming/main.c:49: undefined reference to `g_key_file_get_double_list' collect2: ld returned 1 exit status Process terminated with status 1 (0 minutes, 6 seconds) 11 errors, 0 warnings Am I missing something? I tried also to do in the same way with libconfig but again I have undefined reference. Is the problem the path?

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• Is org.exolab.castor.xml.schema.Schema thread safe?

  - by bkent314

  Is Castor's Schema object thread safe?

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• In GWT I'd like to load the main page on www.domain.com and a dynamic page on www.domain.com/xyz - I

  - by Mike Brecht

  Hi, I have a question for which I'm sure there must a simple solution. I'm writing a small GWT application where I want to achieve this: www.domain.com : should serve the welcome page www.domain.com/xyz : should serve page xyz, where xyz is just a key for an item in a database. If there is an item associated with key xyz, I'll load that and show a page, otherwise I'll show a 404 error page. I was trying to modify the web.xml file accordingly but I just couldn't make it work. I could make it work with an url-pattern if the key in question is after another /, for example: www.domain.com/search/xyz. However, I'd like to have the key xyz directly following the root / (http://www.domain.com/xyz). Something like <servlet-mapping> <servlet-name>main</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> doesn't seem to work as I don't know how to address the main page index.html (as it's not an actual servlet) which will then load my main GWT module. I could make it work with a bad work around (see below): Redirecting a 404 exception to index.html and then doing the look up in the main entry point, but I'm sure that's not the best practice, also for SEO purposes. Can anyone give me a hint on how to configure the web.xml with GWT for my purpose? Thanks a lot. Mike Work-around via 404: Web.xml: <web-app> <error-page> <exception-type>404</exception-type> <location>/index.html</location> </error-page> <welcome-file-list> <welcome-file>index.html</welcome-file> </welcome-file-list> </web-app> index.html -- Main Entry point -- onModuleLoad(): String path = Window.Location.getPath(); if (path == null || path.length() == 0 || path.equalsIgnoreCase("/") || path.equalsIgnoreCase("/index.html")) { ... // load main page } else { lookup(path.substring(1)); // that's key xyz

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• error while installing ia32-libs

  - by user3405516

  I am trying to install "ia32-libs" After doing google I did following steps. Yet not able to do it... 1st step i have added dpkg --add-architecture i386 2nd step added "deb http://archive.ubuntu.com/ubuntu/ raring main restricted universe multiverse" ia32-libs-raring.list" root@user:/etc/apt/sources.list.d# sudo dpkg --add-architecture i386 root@user:/etc/apt/sources.list.d# echo "deb http://archive.ubuntu.com/ubuntu/ raring main restricted universe multiverse" >ia32-libs-raring.list root@user:/etc/apt/sources.list.d# apt-get update Ign http://us-east-1.ec2.archive.ubuntu.com trusty InRelease Ign http://security.ubuntu.com trusty-security InRelease Ign http://archive.ubuntu.com raring InRelease Ign http://us-east-1.ec2.archive.ubuntu.com trusty-updates InRelease Hit http://security.ubuntu.com trusty-security Release.gpg Ign http://archive.ubuntu.com raring Release.gpg Hit http://us-east-1.ec2.archive.ubuntu.com trusty Release.gpg Hit http://security.ubuntu.com trusty-security Release Hit http://us-east-1.ec2.archive.ubuntu.com trusty-updates Release.gpg Ign http://archive.ubuntu.com raring Release Hit http://us-east-1.ec2.archive.ubuntu.com trusty Release Hit http://us-east-1.ec2.archive.ubuntu.com trusty-updates Release Hit http://security.ubuntu.com trusty-security/main Sources Hit http://us-east-1.ec2.archive.ubuntu.com trusty/main Sources Hit http://security.ubuntu.com trusty-security/universe Sources Hit http://us-east-1.ec2.archive.ubuntu.com trusty/universe Sources Hit http://security.ubuntu.com trusty-security/main amd64 Packages Hit http://us-east-1.ec2.archive.ubuntu.com trusty/main amd64 Packages Hit http://security.ubuntu.com trusty-security/universe amd64 Packages Hit http://us-east-1.ec2.archive.ubuntu.com trusty/universe amd64 Packages Hit http://security.ubuntu.com trusty-security/main i386 Packages Hit http://us-east-1.ec2.archive.ubuntu.com trusty/main i386 Packages Hit http://security.ubuntu.com trusty-security/universe i386 Packages Hit http://us-east-1.ec2.archive.ubuntu.com trusty/universe i386 Packages Hit http://security.ubuntu.com trusty-security/main Translation-en Hit http://security.ubuntu.com trusty-security/universe Translation-en Hit http://us-east-1.ec2.archive.ubuntu.com trusty/main Translation-en Hit http://us-east-1.ec2.archive.ubuntu.com trusty/universe Translation-en Hit http://us-east-1.ec2.archive.ubuntu.com trusty-updates/main Sources Hit http://us-east-1.ec2.archive.ubuntu.com trusty-updates/universe Sources Hit http://us-east-1.ec2.archive.ubuntu.com trusty-updates/main amd64 Packages Hit http://us-east-1.ec2.archive.ubuntu.com trusty-updates/universe amd64 Packages Hit http://us-east-1.ec2.archive.ubuntu.com trusty-updates/main i386 Packages Hit http://us-east-1.ec2.archive.ubuntu.com trusty-updates/universe i386 Packages Hit http://us-east-1.ec2.archive.ubuntu.com trusty-updates/main Translation-en Hit http://us-east-1.ec2.archive.ubuntu.com trusty-updates/universe Translation-en Ign http://us-east-1.ec2.archive.ubuntu.com trusty/main Translation-en_US Ign http://us-east-1.ec2.archive.ubuntu.com trusty/universe Translation-en_US Err http://archive.ubuntu.com raring/main amd64 Packages 404 Not Found [IP: 91.189.91.13 80] Err http://archive.ubuntu.com raring/restricted amd64 Packages 404 Not Found [IP: 91.189.91.13 80] Err http://archive.ubuntu.com raring/universe amd64 Packages 404 Not Found [IP: 91.189.91.13 80] Err http://archive.ubuntu.com raring/multiverse amd64 Packages 404 Not Found [IP: 91.189.91.13 80] Err http://archive.ubuntu.com raring/main i386 Packages 404 Not Found [IP: 91.189.91.13 80] Err http://archive.ubuntu.com raring/restricted i386 Packages 404 Not Found [IP: 91.189.91.13 80] Err http://archive.ubuntu.com raring/universe i386 Packages 404 Not Found [IP: 91.189.91.13 80] Err http://archive.ubuntu.com raring/multiverse i386 Packages 404 Not Found [IP: 91.189.91.13 80] Ign http://archive.ubuntu.com raring/main Translation-en_US Ign http://archive.ubuntu.com raring/main Translation-en Ign http://archive.ubuntu.com raring/multiverse Translation-en_US Ign http://archive.ubuntu.com raring/multiverse Translation-en Ign http://archive.ubuntu.com raring/restricted Translation-en_US Ign http://archive.ubuntu.com raring/restricted Translation-en Ign http://archive.ubuntu.com raring/universe Translation-en_US Ign http://archive.ubuntu.com raring/universe Translation-en W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/raring/main/binary-amd64/Packages 404 Not Found [IP: 91.189.91.13 80] W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/raring/restricted/binary-amd64/Packages 404 Not Found [IP: 91.189.91.13 80] W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/raring/universe/binary-amd64/Packages 404 Not Found [IP: 91.189.91.13 80] W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/raring/multiverse/binary-amd64/Packages 404 Not Found [IP: 91.189.91.13 80] W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/raring/main/binary-i386/Packages 404 Not Found [IP: 91.189.91.13 80] W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/raring/restricted/binary-i386/Packages 404 Not Found [IP: 91.189.91.13 80] W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/raring/universe/binary-i386/Packages 404 Not Found [IP: 91.189.91.13 80] W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/raring/multiverse/binary-i386/Packages 404 Not Found [IP: 91.189.91.13 80] E: Some index files failed to download. They have been ignored, or old ones used instead.

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• Lock-Free, Wait-Free and Wait-freedom algorithms for non-blocking multi-thread synchronization.

  - by GJ

  In multi thread programming we can find different terms for data transfer synchronization between two or more threads/tasks. When exactly we can say that some algorithem is: 1)Lock-Free 2)Wait-Free 3)Wait-Freedom I understand what means Lock-free but when we can say that some synchronization algorithm is Wait-Free or Wait-Freedom? I have made some code (ring buffer) for multi-thread synchronization and it use Lock-Free methods but: 1) Algorithm predicts maximum execution time of this routine. 2) Therad which call this routine at beginning set unique reference, what mean that is inside of this routine. 3) Other threads which are calling the same routine check this reference and if is set than count the CPU tick count (measure time) of first involved thread. If that time is to long interrupt the current work of involved thread and overrides him job. 4) Thread which not finished job because was interrupted from task scheduler (is reposed) at the end check the reference if not belongs to him repeat the job again. So this algorithm is not really Lock-free but there is no memory lock in use, and other involved threads can wait (or not) certain time before overide the job of reposed thread. Added RingBuffer.InsertLeft function: function TgjRingBuffer.InsertLeft(const link: pointer): integer; var AtStartReference: cardinal; CPUTimeStamp : int64; CurrentLeft : pointer; CurrentReference: cardinal; NewLeft : PReferencedPtr; Reference : cardinal; label TryAgain; begin Reference := GetThreadId + 1; //Reference.bit0 := 1 with rbRingBuffer^ do begin TryAgain: //Set Left.Reference with respect to all other cores :) CPUTimeStamp := GetCPUTimeStamp + LoopTicks; AtStartReference := Left.Reference OR 1; //Reference.bit0 := 1 repeat CurrentReference := Left.Reference; until (CurrentReference AND 1 = 0)or (GetCPUTimeStamp - CPUTimeStamp > 0); //No threads present in ring buffer or current thread timeout if ((CurrentReference AND 1 <> 0) and (AtStartReference <> CurrentReference)) or not CAS32(CurrentReference, Reference, Left.Reference) then goto TryAgain; //Calculate RingBuffer NewLeft address CurrentLeft := Left.Link; NewLeft := pointer(cardinal(CurrentLeft) - SizeOf(TReferencedPtr)); if cardinal(NewLeft) < cardinal(@Buffer) then NewLeft := EndBuffer; //Calcolate distance result := integer(Right.Link) - Integer(NewLeft); //Check buffer full if result = 0 then //Clear Reference if task still own reference if CAS32(Reference, 0, Left.Reference) then Exit else goto TryAgain; //Set NewLeft.Reference NewLeft^.Reference := Reference; SFence; //Try to set link and try to exchange NewLeft and clear Reference if task own reference if (Reference <> Left.Reference) or not CAS64(NewLeft^.Link, Reference, link, Reference, NewLeft^) or not CAS64(CurrentLeft, Reference, NewLeft, 0, Left) then goto TryAgain; //Calcolate result if result < 0 then result := Length - integer(cardinal(not Result) div SizeOf(TReferencedPtr)) else result := cardinal(result) div SizeOf(TReferencedPtr); end; //with end; { TgjRingBuffer.InsertLeft } RingBuffer unit you can find here: RingBuffer, CAS functions: FockFreePrimitives, and test program: RingBufferFlowTest Thanks in advance, GJ

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• Why does release mode affect on Thread.CurrentThread.CurrentCulture?

  - by satispunk

  Hi I have ASP .NET application. I set culture in Application_Begin request: System.Threading.Thread.CurrentThread.CurrentCulture = myCulture; System.Threading.Thread.CurrentThread.CurrentUICulture = myCulture; When I get current culture from page, it is myCulture in debug mode and it is "en-GB" in release mode. I don't understand why Release mode affects on Thread.CurrentThread.CurrentCulture I use VS2010 and .NET 4.0 Thanks

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• How do I solve this indexOutOfBoundsException in my server send/receive thread?

  - by Stefan Schouten

  I am creating a multiplayer game in Java with a server and multiple clients. Everything runs perfectly, until I press the Kick-button in the server to kick a client. Error at receive thread of server, after kicking the first person who joined out of three: java.lang.IndexOutOfBoundsException: Index: 2, Size: 2 at java.util.ArrayList.rangeCheck(ArrayList.java:604) at java.util.ArrayList.get(ArrayList.java:382) > at networktest.Server$3.run(Server.java:186) at java.lang.Thread.run(Thread.java:722) The pointed line is the ois = new ObjectInputStream where I send datatype. The server kicks the first person perfectly, but removes the second one in the list too, with an error of java.lang.ClassCastException. server receive: private static Thread receive = new Thread() { @Override public void run() { ObjectInputStream ois; while (true) { for (int i = 0; i < list_sockets.size(); i++) { try { ois = new ObjectInputStream(list_sockets.get(i).getInputStream()); int receive_state = (Integer) ois.readObject(); // receive state ois = new ObjectInputStream(list_sockets.get(i).getInputStream()); byte datatype = (byte) ois.readObject(); // receive datatype if(datatype == 2){ ois = new ObjectInputStream(list_sockets.get(i).getInputStream()); ChatLine chatLine = (ChatLine) ois.readObject(); // receive ChatLine } else if (datatype == 0){ ois = new ObjectInputStream(list_sockets.get(i).getInputStream()); DataPackage dp = (DataPackage) ois.readObject(); // receive dp list_data.set(i, dp); } if (receive_state == 1) // Client Disconnected by User { disconnectClient(i); i--; } } catch (Exception ex) // Client Disconnected (Client Didn't Notify Server About Disconnecting) { System.err.println("Error @ receive:"); ex.printStackTrace(); disconnectClient(i); i--; } } try { this.sleep(3); } catch (InterruptedException ex) { Logger.getLogger(Server.class.getName()).log(Level.SEVERE, null, ex); } } } }; user send: Thread send = new Thread() { public void run() { ObjectOutputStream oos; byte datatype = 0; while (connected){ if (socket != null){ try { DataPackage dp = new DataPackage(); dp.x = Client.player.x; dp.y = Client.player.y; dp.username = username; dp.charType = charType; dp.walking = (byte)Client.player.walking; if (Client.outputChatLine.line != null) datatype = 2; else { datatype = 0; } oos = new ObjectOutputStream(socket.getOutputStream()); oos.writeObject(Integer.valueOf(Client.this.state)); // send state oos = new ObjectOutputStream(socket.getOutputStream()); oos.writeObject(Byte.valueOf(datatype)); // send datatype if (datatype == 2) { oos.reset(); oos.writeObject(Client.outputChatLine); Client.outputChatLine = new ChatLine(); } else { oos = new ObjectOutputStream(socket.getOutputStream()); oos.writeObject(dp); } if (Client.this.state == 1) { connected = false; socket = null; JOptionPane.showMessageDialog(null, "Client Disconnected", "Info", 1); System.exit(0); } } catch (Exception ex){} } try { this.sleep(2); } catch (InterruptedException ex) { Logger.getLogger(Client.class.getName()).log(Level.SEVERE, null, ex); } } } }; disconnect client method: public static void disconnectClient(int index) { try { list_clients_model.removeElementAt(index); list_client_states.remove(index); list_data.remove(index); list_sockets.remove(index); } catch (Exception ex) {} } Does anyone know how to solve this?

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• is it right to call ejb bean from thread by ThreadPoolExecutor?

  - by kislo_metal

  I trying to call some ejb bean method from tread. and getting error : (as is glassfish v3) Log Level SEVERE Logger javax.enterprise.system.std.com.sun.enterprise.v3.services.impl Name-Value Pairs {_ThreadName=Thread-1, _ThreadID=42} Record Number 928 Message ID java.lang.NullPointerException at ua.co.rufous.server.broker.TempLicService.run(TempLicService.java Complete Message 35) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:637) here is tread public class TempLicService implements Runnable { String hash; //it`s Stateful bean @EJB private LicActivatorLocal lActivator; public TempLicService(String hash) { this.hash= hash; } @Override public void run() { lActivator.proccessActivation(hash); } } my ThreadPoolExecutor public class RequestThreadPoolExecutor extends ThreadPoolExecutor { private boolean isPaused; private ReentrantLock pauseLock = new ReentrantLock(); private Condition unpaused = pauseLock.newCondition(); private static RequestThreadPoolExecutor threadPool; private RequestThreadPoolExecutor() { super(1, Integer.MAX_VALUE, 10, TimeUnit.SECONDS, new LinkedBlockingQueue<Runnable>()); System.out.println("RequestThreadPoolExecutor created"); } public static RequestThreadPoolExecutor getInstance() { if (threadPool == null) threadPool = new RequestThreadPoolExecutor(); return threadPool; } public void runService(Runnable task) { threadPool.execute(task); } protected void beforeExecute(Thread t, Runnable r) { super.beforeExecute(t, r); pauseLock.lock(); try { while (isPaused) unpaused.await(); } catch (InterruptedException ie) { t.interrupt(); } finally { pauseLock.unlock(); } } public void pause() { pauseLock.lock(); try { isPaused = true; } finally { pauseLock.unlock(); } } public void resume() { pauseLock.lock(); try { isPaused = false; unpaused.signalAll(); } finally { pauseLock.unlock(); } } public void shutDown() { threadPool.shutdown(); } //<<<<<< creating thread here public void runByHash(String hash) { Runnable service = new TempLicService(hash); threadPool.runService(service); } } and method where i call it (it is gwt servlet, but there is no proble to call thread that not contain ejb) : @Override public Boolean submitHash(String hash) { System.out.println("submiting hash"); try { if (tBoxService.getTempLicStatus(hash) == 1) { //<<< here is the call RequestThreadPoolExecutor.getInstance().runByHash(hash); return true; } } catch (NoResultException e) { e.printStackTrace(); } return false; } I need to organize some pool of submitting hash to server (calls of LicActivator bean), is ThreadPoolExecutor design good idea and why it is not working in my case? (as I know we can`t create thread inside bean, but could we call bean from different threads? ). If No, what is the bast practice for organize such request pool? Thanks. << Answer: I am using DI (EJB 3.1) soo i do not need any look up here. (application packed in ear and both modules in it (web module and ejb), it works perfect for me). But I can use it only in managed classes. So.. 2.Can I use manual look up in Tread ? Could I use Bean that extends ThreadPoolExecutor and calling another bean that implements Runnable ? Or it is not allowed ?

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• How does SharePoint identify a new email to a Discussion Board as belonging to a thread?

  - by glenatron

  Pretty much as the title really, I want to be able to create a new thread from a reply to an old thread, perhaps by adding a "New Thread: " or similar to the title of the message, but of course Sharepoint is using some other characteristics of the message to recognise messages as replies to other messages and I can't find what those are. Does anyone know? Is it just using the In-Reply-To header? Alternatively, is there already a standard way to get the outcome I'm looking for, of a new discussion thread regardless of whether the initial email is a reply to a current discussion or not?

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• Right way to have a thread in parallel to django project on wsgi.

  - by Enrico Carlesso

  Hi guys. I'm writing a django project, and I need to have a parallel thread which performs certain tasks. The project will be deployed in Apache2.2 with mod_wsgi. Actually my implementation consists on a thread with a while True - Sleep which is called from my django.wsgi file. Is this implementation correct? Two problems raises: does django.wsgi get called only once? Will I have just that instance of the thread running? And second, I need to "manually" visit at least a page to have the Thread run. Is there a workaround? Does anyone has some hints on better solutions? Thanks in advance.

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• If terminating a hung thread is a good idea, how do I do it safely?

  - by Steve

  My Delphi program relies heavily on Outlook automation. Outlook versions prior to 2007-SP2 tend to get stuck in memory due to badly written addins and badly written Outlook code. If Outlook is stuck, calling CreateOleObject('Outlook.Application') or GetActiveObject ... doesn't return and keeps my application hanging till Outlook.exe is closed in the task manager. I've thought of a solution, but I'm unsure whether it's good practice or not. I'd start Outlook with CreateOleObject in a separate thread, wait 10 seconds in my main thread and if Outlook hangs (CreateOleObject doesn't return), offer the user to kill the Outlook.exe process from my program. But since I don't want to force the user to kill the Outlook.exe process, as an alternative I also need a way to kill the new thread in my program which keeps hanging now. Is this good practice? How can I terminate a hanging thread in Delphi without leaking memory?

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• What are the limitations of a STA thread in compare to MTA threads ?

  - by Xaqron

  If we make a thread STA like this: Thread.SetApartmentState(STA); then it cannot run code marked with [MTAThread] attribute. We have seen [STAThread] in windows and console applications but I have never seen code with [MTAThread] attribute and don't know which .NET libraries use this attribute. My question is what are the limitations of a thread with apartment state set to STA, in compare to threads with MTA apartment state (natural .NET threads) ?

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• Where about should my main class be created in a project?

  - by Dan

  The problem is where a class should be created in my code. An example is I have a UI class and a main logic class that controls other objects. Should the main logic class create the UI object, or should the UI object create the instance of the main logic class? An explanation of which method is best and why would be ideal. Thanks.

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• What is the difference between Thread.Sleep(timeout) and ManualResetEvent.Wait(timeout)?

  - by Erik Forbes

  Both Thread.Sleep(timeout) and resetEvent.Wait(timeout) cause execution to pause for at least timeout milliseconds, so is there a difference between them? I know that Thread.Sleep causes the thread to give up the remainder of its time slice, thus possibly resulting in a sleep that lasts far longer than asked for. Does the Wait(timeout) method of a ManualResetEvent object have the same problem?

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• Controlling Movie Clips from the main time line instead of using their individual time lines?

  - by Jess

  I have a Flash website template (four pages) that I made using AS 3.0 and Flash CS4. It is for an assignment involving movie clips. Currently on the main time line there is only one frame, and three layers: actions/menu/content. The actionscript on the main time line is simply: content_mc.stop (); There is a movie clip on the stage called “Content” that contains the content for each of the pages. Inside of that there is a “Menu” movie clip that contains and controls all of the navigation buttons. The actionscript for the Menu movie clip is: function homeBtnPress (event:MouseEvent):void{ //comments here //comments here MovieClip(parent).content_mc.gotoAndStop("home"); } function aboutBtnPress (event:MouseEvent): void{ MovieClip(parent).content_mc.gotoAndStop ("about"); } function servicesBtnPress (event:MouseEvent): void{ MovieClip (parent).content_mc.gotoAndStop ("services"); } function contactBtnPress (event:MouseEvent): void{ MovieClip (parent).content_mc.gotoAndStop ("contact"); } function portfolioBtnPress (event:MouseEvent): void{ MovieClip (parent).content_mc.gotoAndStop ("portfolio"); } home.addEventListener(MouseEvent.CLICK, homeBtnPress); about.addEventListener(MouseEvent.CLICK, aboutBtnPress); services.addEventListener(MouseEvent.CLICK, servicesBtnPress); contact.addEventListener(MouseEvent.CLICK, contactBtnPress); portfolio.addEventListener(MouseEvent.CLICK, portfolioBtnPress); So everything works fine, but my instructor wants me to control the menu/content from the main time line by using the target path tool. What exactly would I target – just the “menu” and “content” movie clips, and what code would I use? Sorry if I'm not explaining very well, I'm pretty confused. Here is the feedback from my instructor: “While we learned how to control the main timeline and the timeline of another movie clip from within a movie clip, this is not the most intuitive way to script and makes for difficult debugging. So you will need to explore how to target your buttons inside of your menu movie clip and the frames within the content movie clip from the main timeline. “ Thanks so much in advance!

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• What system does before launching iPhone app's main() function?

  - by Eonil

  My app takes too much time to loading. So I put a NSLog in main() function like this to measure loading time from first: int main(int argc, char *argv[]) { NSLog(@"main"); NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init]; int retVal = UIApplicationMain(argc, argv, nil, nil); [pool release]; return retVal; } But, the log displayed at really later time. Default.png displayed about 5 seconds, all loading process completed in 1~2 seconds after log appeared. What's happening before executing main() function on iPhone app?

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