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• C++ Thread Safe Integer

  - by Paul Ridgway

  Hello everyone, I have currently created a C++ class for a thread safe integer which simply stores an integer privately and has public get a set functions which use a boost::mutex to ensure that only one change at a time can be applied to the integer. Is this the most efficient way to do it, I have been informed that mutexes are quite resource…

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• Win32 Thread Exits Unexpectedly

  - by sahs

  Hello, I'm writing a C++ application. I realized that one of my worker threads may terminate unexpectedly. The (VS 2005) debug log says: The thread 'Win32 Thread' (0x5d98) has exited with code -858993460 (0xcccccccc). I surrounded all the worker thread code with a try/catch block. So, if the reason was an exception, I would catch it.…

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• Minimizing Java Thread Context Switching Overhead

  - by binil

  I have a Java application running on Sun 1.6 32-bit VM/Solaris 10 (x86)/Nahelem 8-core(2 threads per core). A specific usecase in the application is to respond to some external message. In my performance test environment, when I prepare and send the response in the same thread that receives the external input, I get about 50 us advantage…

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• Sleep a thread until an event is attended in another thread from a different class

  - by Afro Genius

  I have an application that fires 2 threads, the 1st launches another class to do some processing which in turn launches a 3rd class to do yet more processing. The 2nd thread in the main class should wait until some event in the 3rd class completes before it performs its job. How can this be achieved? I had tried implementing a…

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• Thread help with Android game

  - by Ciph3rzer0

  I need some help dealing with three Threads in Android One thread is the main thread, the other is the GLThread, and the other is a WorkerThread I created to update the game state. The problem I have is they all need to access the same LinkedList of game objects. Both the GLThread and my WorkerThread only read from the…

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• thread destructors in C++0x vs boost

  - by Abruzzo Forte e Gentile

  Hi All These days I am reading the pdf Designing MT programs . It explains that the user MUST explicitly call detach() on an object of class std::thread in C++0x before that object gets out of scope. If you don't call it std::terminate() will be called and the application will die. I usually use boost::thread for…

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• VC++ - Asynchronous Thread

  - by JVNR

  I am working on VC++ project, in that my application process a file from input path and generates 3 output "*.DAT" files in the destination path. I will FTP these DAT file to the destination server. After FTP, I need to delete only two output .DAT files the folder. I am able to delete those files, because there one…

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• Update UI in the main activity through handler in a thread (Android)

  - by Hrk

  Hello, I try to make several connection in a class and update the multiple progressbar in the main screen. But I've got the following error trying to use thread in android : Code: 05-06 13:13:11.092: ERROR/ConnectionManager(22854): ERROR:Can't create handler inside thread that has not called Looper.prepare() …

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• Illegal cross thread operation exception, unable to handle it

  - by yeah1000

  Hello, i am using visual C# express 2008. I SOMETIMES get the illegal cross thread operation in my invoke method when i try to run my project. It use the same invoke method in many places but its only at the beginning of another thread that i get the error. I check the InvokeRequired property, invoke the same…

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• Boost.Thread Linking - boost_thread vs. boost_thread-mt

  - by Robert S. Barnes

  It's not clear to me what linking options exist for the Boost.Thread 1.34.1 library. I'm on Ubuntu 8.04 and I've found that using eitherr boost_thread or boost_thread-mt during linking both compile and run, but I don't see any documentation on these or any other linking options in above link. What…

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• Help regarding C# thread pool

  - by Matt

  I have a method that gets called quite often, with text coming in as a parameter.. I'm looking at creating a thread pool that checks the line of text, and performs actions based on that.. Can someone help me out with the basics behind creating the thread pool and firing off new threads please? …

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• can create a new thread on goog-app-engine ..(python)

  - by zjm1126

  i use this code can crteate ,but someone say it can't create ,why ? class LogText(db.Model): content = db.StringProperty(multiline=True) class MyThread(threading.Thread): def __init__(self,threadname): threading.Thread.__init__(self, name=threadname) def run(self,request): …

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• Twisted: why is it that passing a deferred callback to a deferred thread makes the thread blocking a

  - by surtyaarthoughts

  I unsuccessfully tried using txredis (the non blocking twisted api for redis) for a persisting message queue I'm trying to set up with a scrapy project I am working on. I found that although the client was not blocking, it became much slower than it could have been because what should have been one…

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• Android: raise AlertDialog from background thread

  - by Stefan Klumpp

  In my activity there's some stuff going on in a background thread, which gets started in Activity_1. The processing of the background thread takes a while and I want to notify the user when it's completed via an AlertDialog. However, the user might have changed to Activity_2 or Activity_3 in the…

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• Thread & Windows forms

  - by Julien

  I'd like to know if the executing thread is the one that created a given control instance (to prevent cross-thread if it's not). Is that possible ?

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• What is the use of Thread.BeginThreadAffinity() method in Thread class ?

  - by DotNetBeginner

  What is the use of Thread.BeginThreadAffinity() method in Thread class ? It will be helpful for me to understand if you provide its sample example with exaplaination. Thanks.

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• Thread Management Object

  - by Gusdor

  I feel rather foolish as this is just a short question. I was reading about a bunch of thread management helper classes in .net, specifically one that aids the storage of threads to help a service manager object automatically invoke delegates onto the subscribing thread. I'm pretty sure it had…

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• Django Thread-Safety for templatetags

  - by Acti67

  Hi, I am coming here, because I have a question about Django and Thread. I read the documentation http://docs.djangoproject.com/en/dev/howto/custom-template-tags/#template-tag-thread-safety and I would like to now if the next code could be impacted also, at the rendering context. class…

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• Thread affinity

  - by mita

  Can we set two thread or two task to execute with different processor affinity in C#.net Application? I have read about SetThreadAffinityMask but there is no example to have that used.. or Is there any way TPL(Task Parellel Libray) executes two thread/Task in with high priorty to use…

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• redirect output from file to three running thread

  - by alaamh

  I want to use 'cat myclip.avi' command to send the output to three running thread, i am trying to process same clip file to produce three different result. can i use dup2 or how i can make pipe with thread not fork? thanks

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• How to use timer in a thread

  - by Anjaneyulu

  Hi, I would like to send email notifications to users of my project exactly at 8 a.m, Here we are using a thread to send emails to the user. I would like to send some emails exactly at 8 A.M. How can I execute that perticular logic in this Thread. Please help me.

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• Thread safety with heap-allocated memory

  - by incrediman

  I was reading this: http://en.wikipedia.org/wiki/Thread_safety Is the following function thread-safe? void foo(int y){ int * x = new int[50]; /*...do some stuff with the allocated memory...*/ delete x; } In the article it says that to be thread-safe you can only use…

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• Thread & Windows forms (C#)

  - by Julien

  Hello, I'd like to know if the executing thread is the one that created a given control instance (to prevent cross-thread if it's not). Is that possible ? Thx.

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• final fields and thread-safety

  - by pcjuzer

  Should it be all fields, including super-fields, of a purposively immutable java class 'final' in order to be thread-safe or is it enough to have no modifier methods? Suppose I have a POJO with non-final fields where all fields are type of some immutable class. This POJO has…

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• WebLogic stuck thread protection

  - by doublep

  By default WebLogic kills stuck threads after 15 min (600 s), this is controlled by StuckThreadMaxTime parameter. However, I cannot find more details on how exactly "stuckness" is defined. Specifically: What is the point at which 15 min countdown begins. Request…

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