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• classic .net app pool + iis 7.5 + compression modules

  - by user328648

  I have windows 2008 r2 installed on my server, so iis 7.5 is. I am not able run any of the class.net applications on iis. one of the compression modules throws exception. Detailed Error Information Module DynamicCompressionModule Notification SendResponse Handler StaticFile Error Code 0x8007007e Requested URL http://localhost:8081/a.html Physical Path C:\inetpub\TestWebSite\a.html Logon Method Anonymous Logon User Anonymous i tried diferent logon methods, different sites even static html pages are not served. Error never changes. sorry for poor english.

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• Killing a thread while deleting an object

  - by viswanathan

  I have an application which does some socket communication with some hardwares. Assume for the particular hardware i have an object and this object intiates a thread which listens on a particular port number say 5001 infinitely until a connection is established. Now if i delete this obect is there anyway by which i can ensure that the thread that is listening on port number 5001 infinitely also gets destroyed.

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• emit signal from thread

  - by Umesha MS

  Hi, I am writing a sample which uses thread to do some background processing. In the thread I am trying to emitting a signal. But it is not coming to slot. While connecting I checked the value of “connect()” function value , it is returning value as true. One thing to notice is in the run method I am not using “exec() “ . Please help me to solve this problem.

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• Objective-C: Allocation in one thread and release in other

  - by user423977

  Hi I am doing this in my Main Thread: CCAnimation *anim; //class variable [NSThread detachNewThreadSelector:@selector(loadAimation) toTarget:self withObject:nil]; In loadAimation: -(void) loadAimation { NSAutoreleasePool *autoreleasepool = [[NSAutoreleasePool alloc] init]; anim = [[CCAnimaton alloc] init]; [autoreleasepool drain]; } And in main thread I release it: [anim release]; Now I want to ask if this is fine regarding memory management.

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• Is Perforce's C++ P4API thread-safe?

  - by Scott Bilas

  Simple question - is the C++ API provided by Perforce thread-safe? There is no mention of it in the documentation. By "thread-safe" I mean for server requests from the client. Obviously there will be issues if I have multiple threads trying to set client names and such on the same connection. But given a single connection object, can I have multiple threads fetching changelists, getting status, translating files through a p4 map, etc.?

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• How to handle error on other thread?

  - by markattwood

  Hi, I'm trying to handle errors that have occurred on other threads the .NET CF program is like below: static void Main() { Thread t = new Thread(Start); t.Start(); ... } void Start() { ... Exception here } In my situation, putting try catch in the Start method is impossible. How can I handle it in the global code?

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• Thread safe collections in .NET

  - by ripper234

  What is the standard nowadays when one needs a thread safe collection (e.g. Set). Do I synchronize it myself, or is there an inherently thread safe collection?

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• Java: "implements Runnable" vs. "extends Thread"

  - by user65374

  From what time I've spent with threads in Java, I've found these two ways to write threads. public class ThreadA implements Runnable { public void run() { //Code } } //with a "new Thread(threadA).start()" call public class ThreadB extends Thread { public ThreadB() { super("ThreadB"); } public void run() { //Code } } //with a "threadB.start()" call Is there any significant difference in these two blocks of code?

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• Maintaining many socket connections with a single thread

  - by John

  Many tutorials on socket communication I see seem to use 1 thread per socket. But on a server used for online gaming, you might have 10k concurrent users - 10k threads isn't probably a wonderful idea. I came across a tool (SmartFox) which claims to use a single thread for monitoring all socket connections, potentially thousands of them. This app happens to be in Java, but I figure C++ or C# could do the same... how would you achieve this?

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• C++ standard thread class?

  - by srikfreak

  I have come across many ad hoc implementations of thread class in C++, but why is there no standard library thread class like the one in Java? The one that I generally use in C++ is http://www.linuxdocs.org/HOWTOs/C++Programming-HOWTO-24.html

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• C# Catch Exception in a thread

  - by PaN1C_Showt1Me

  How could you find out that an Exception occurred in a Thread in a MultiThreaded Application ? and consecutively clean the resources ? Because otherwise the Thread can be still remaining in memory and running.

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• class NSCFData autoreleased with no pool in place

  - by iSight

  Hi, I have converted my NSString into string, and returning the same but the above error mentioned in the title is printing on console. Please suggest so that i could get away from this issue. my code is below: string stringFromNSString(NSString *inNSString) { return [inNSString UTF8String]; }

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• What does the GDI+ background thread do?

  - by uj

  Upon initialization, GDI+ (non .NET) creates a background thread, which can optionally be suppressed subject to calling some hook functions. MSDN, however, doesn't say what this thread actually does. Google doesn't seem to know either. What is it for?

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• creating thread on another core? (WinAPI)

  - by user146780

  I was wondering if there was a way to run a thread on a seperate core instead of just a thread on that core? Thanks

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• How to specify the user in a C# Thread

  - by pistacchio

  Hi, how can I spawn the thread T from application A so that that application A's user is U1 (like me) but thread T's user is U2 (like a superuser)? Thanks

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• INFORMIX - listener thread err 25582

  - by Samuel Lao

  I´ve been digging different forums in the last 7 days looking for a possible solution.... Our database is based on informix running in a Linux server (LINUX SUSE 11). Suddenly, last saturday informix began to show an error message: listener-thread err=-25582 oserr=0, network connection is broken End users started to call reporting about slow network performance to this server, moments where the database application lost connection with server...so we proceeded doing a ping to the db server, getting good responses (1ms) without losing packets. I tried typing telnet (ipserver) 1526 which is informix's port for the application, it works. We had to disconnect the server and enable a backup db server which is located on another branch. It has been working in a regular way because the backup server hasn´t good specs (it is an old dell server model). So, I scanned the main server looking for viruses using Trend Micro Server Protect, it didn´t find anything (0 viruses and spywares). I revised the switches and routers, but I haven´t find anything strange... What else could be ? Thanks in advanced for your time and help with this issue.....I would really appreciate any advice...

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• 401 - Unauthorized: Access is denied error from web app running in IIS 7.5 using App Pool Identity

  - by Eric Gatesman

  I have an ASP.NET app on a Windows 2008 server, IIS 7.5. When I try to access web site, I get a login popup. If I click "cancel" I get a 401 - Unauthorized: Access is denied due to invalid credentials. The app is using Windows authentication (anonymous is disabled). The app has it's own app pool, running under the App Pool Identity. If I change the app pool to run under the NetworkService account, my website functions just fine. I'm guessing that this is just a permissions issue, but can't figure out what permissions I need to change. I gave the App Pool Identity permissions on the physical directory of the app, but that didn't solve the problem.

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• Why is a ZFS pool not persisting over server restart?

  - by Chance

  I have a ZFS pool with 4 drives. It also has a 3gb ZIL and a 20GB L2ARC that are each partitions on an SDD that doubles as my Linux Mint (ver. 13) boot drive. The pool is mounted to /data. The problem I am running into is that when I restart the server the pool/directory is completely wiped despite having data in it prior. I'm afraid I'm doing something wrong in the setup, which leads me to the following questions: What would cause this? Is there anyway to get the data back? How do I stop it from happening in the future? Thank you in advance! pool: data state: ONLINE scan: none requested config: NAME STATE READ WRITE CKSUM data ONLINE 0 0 0 raidz2-0 ONLINE 0 0 0 sda1 ONLINE 0 0 0 sdb1 ONLINE 0 0 0 sdc1 ONLINE 0 0 0 sdd1 ONLINE 0 0 0 logs sde4 ONLINE 0 0 0 cache sde3 ONLINE 0 0 0 errors: No known data errors

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• Any way to know what files were in a broken ZFS pool?

  - by Erik Tjernlund

  I have a large ZFS pool of 4 combined drives. Now, the filesystem can not be mounted: pool: tank state: UNAVAIL status: One or more devices could not be opened. There are insufficient replicas for the pool to continue functioning. action: Attach the missing device and online it using 'zpool online'. see: http://www.sun.com/msg/ZFS-8000-3C scan: none requested config: NAME STATE READ WRITE CKSUM tank UNAVAIL 0 0 0 insufficient replicas c10t0d0 ONLINE 0 0 0 c8t0d0 UNAVAIL 0 0 0 cannot open c8t1d0 ONLINE 0 0 0 c10t1d0 ONLINE 0 0 0 Probably a broken drive (c8t0d0). I'm not overly concerned by the loss of the data, but I'd love to know exactly which files were in that pool. Is there any way to get a listing of what files were there?

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• How much memory do I need for innodb buffer pool?

  - by Shirko

  I read here that You need buffer pool a bit (say 10%) larger than your data (total size of Innodb TableSpaces) On the other hand I've read elswher that innodb_buffer_pool_size must be up to %80 of the memory. So I'm really confused how should I choose the best size for the pool. My database size is about 6GB and my total memory 64GB. Also I'm wondering if I increase the buffer pool size, I should shrink the number of maximum connections to make room for extra buffer, or these parameters are independent. Thanks

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• How do I stop my IIS App Pool making a request to wpad.mydomain.com?

  - by Programming Hero

  As part of some performance troubleshooting, I've monitored the slow startup of a "cold" App Pool (one without an active worker process) in IIS. When using a built-in account, the App Pool starts in sub-second time. When using a custom local account the App Pool takes 30+ seconds to start processing requests. The service appears to be making requests to wpad.mydomain.com, an address it does not have access to, which causes it to wait 30 seconds for a response before eventually timing out. As a workaround, I've added the hostname to the server's hosts file, to direct the traffic to the local machine, which returns much faster (1-2 seconds). What do I need to do to stop IIS making this request when this identity is used for the App Pool?

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• Is there any reason for an object pool to not be treated as a singleton?

  - by Chris Charabaruk

  I don't necessarily mean implemented using the singleton pattern, but rather, only having and using one instance of a pool. I don't like the idea of having just one pool (or one per pooled type). However, I can't really come up with any concrete situations where there's an advantage to multiple pools for mutable types, at least not any where a single pool can function just as well. What advantages are there to having multiple pools over a singleton pool?

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• JDBC connection for a background thread being closed accessing in Websphere

  - by ferrari fan

  Hi, I have an application running in Websphere Portal Server inside of Websphere Application Server 6.0 (WAS). In this application for one particular functionality that takes a long time to complete, I am firing a new thread that performs this action. This new thread opens a new Session from Hibernate and starts performing DB transactions with it. Sometimes (haven't been able to see a pattern), the transactions inside the thread work fine and the process completes successfully. Other times however I get the errors below: org.hibernate.exception.GenericJDBCException: could not load an entity: [OBJECT NAME#218294] ... Caused by: com.ibm.websphere.ce.cm.ObjectClosedException: DSRA9110E: Connection is closed. Method cleanup failed while trying to execute method cleanup on ManagedConnection WSRdbManagedConnectionImpl@642aa0d8 from resource jdbc/MyJDBCDataSource. Caught exception: com.ibm.ws.exception.WsException: DSRA0080E: An exception was received by the Data Store Adapter. See original exception message: Cannot call 'cleanup' on a ManagedConnection while it is still in a transaction.. How can I stop this from happening? Why does it seem that WAS wants to kill my connections even though they're not done. Is there a way I can stop WAS from attempting to close this particular connection? Thanks

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• remove an ASIHTTPRequest thread when it is done

  - by user262325

  Hello everyone I have a project in which it runs 5 download threads - (void)fetchThisURLFiveTimes:(NSURL *)url { [myProgressIndicator setProgress:0]; NSLog(@"Value: %f", [myProgressIndicator progress]); [myQueue cancelAllOperations]; [myQueue setDownloadProgressDelegate:myProgressIndicator]; [myQueue setDelegate:self]; [myQueue setRequestDidFinishSelector:@selector(queueComplete:)]; int i; for (i=0; i<5; i++) { ASIHTTPRequest *request = [ASIHTTPRequest requestWithURL:url]; [request setDidFinishSelector:@selector(requestDone:)]; [request setDelegate:self]; [myQueue addOperation:request]; } [myQueue go]; } - (void)requestWentDone:(ASIHTTPRequest *)request { //.. } - (void)queueComplete:(ASINetworkQueue *)queue { NSLog(@"Value: %f", [myProgressIndicator progress]); } I hope to remove a thread when it is done. I do not know where I need to place my codes: requestWentDone:(ASIHTTPRequest *)request or queueComplete:(ASINetworkQueue *)queue I noticed there is no tag property for request, so I added it to ASIHTTPRequest to help me recognize which thread prompts the function reuqestWentDone, I can get the tag of different request, but I do not know how to remove the ASIHTTPRequest thread from myQueue. Welcome any comment Thanks interdev

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• Race condition during thread start?

  - by user296353

  Hi, I'm running the following code to start my threads, but they don't start as intended. For some reason, some of the threads start with the same objects (and some don't even start). If I try to debug, they start just fine (extra delay added by me clicking F10 to step through the code). These are the functions in my forms app: private void startWorkerThreads() { int numThreads = config.getAllItems().Count; int i = 0; foreach (ConfigurationItem tmpItem in config.getAllItems()) { i++; var t = new Thread(() => WorkerThread(tmpItem, i)); t.Start(); //return t; } } private void WorkerThread(ConfigurationItem cfgItem, int mul) { for (int i = 0; i < 100; i++) { Thread.Sleep(10*mul); } this.Invoke((ThreadStart)delegate() { this.textBox1.Text += "Thread " + cfgItem.name + " Complete!\r\n"; this.textBox1.SelectionStart = textBox1.Text.Length; this.textBox1.ScrollToCaret(); }); } Anyone able to help me out? Cheers!

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