threadpool

I have a win service hosting a few workflows (a WorkflowApplication and a WorkflowServiceHost) that I need to keep long running. Because OnStart() requires that it completes and returns to the OS, I have a main method that fires on another thread in a threadpool. My Onstart() mainly looks like this protected override void OnStart(string[] args) { eventLog.WriteEntry("Service starting..."); ThreadPool.QueueUserWorkItem(new WaitCallback(ServiceMainThread)); Thread.Sleep(100); eventLogCms.WriteEntry("Service Started."); } ServiceMainThread() is the method where my workflows execute and core

We are having this issue with our production servers (apache-tomcat-7.0.6), which is running a Spring-JPA-Hibernate application using MySQL as DB. During this issue server becomes slow and within a minute it becomes unresponsive with number of active tomcat threads shoots up to 200(We use javamelody to observe these things). Logs look something like: 2012-04-07 07:53:48,058 DEBUG AuthenticationHandler:("http-bio-7006"-exec-304):35 - Authentication handler : ~ 2012-04-07 07:53:48,059 DEBUG AuthenticationHandler:("http-bio-7006"-exec-304):45 - Service Id : 1333765428059-/xxx-framework-service

I'm not too clued up with threading but is the following code acceptable (I'm more worried about using thread pools within a loop): string[] filePaths = GetFilePaths(); foreach (string filePath in filePaths ) { ThreadPool.QueueUserWorkItem(DoStuff, filePath); } Is there any other way that this can be done? EDIT: N.B. Each execution of DoStuff will in turn create multiple sub threads (about 200). These sub-threads simulate users of the system and is only responsible for receiving and sending information via TCP. Your current code could go wrong when a combination of the 2 following holds: there

I am getting threadlocal memory leak errors in Tomcat and I am using ThreadPool, but have no implementation of ThreadLocal in my webapp. SEVERE: The web application [/myWebApp] created a ThreadLocal with key of type [org.a pache.http.impl.cookie.DateUtils$DateFormatHolder$1] (value [org.apache.http.imp l.cookie.DateUtils$DateFormatHolder$1@4c2849]) and a value of type [java.lang.re f.SoftReference] (value [java.lang.ref.SoftReference@1e67280]) but failed to rem ove it when the web application was stopped. Threads are going to be renewed ove r time to try and avoid a probable memory leak. What

I want to get a thread-pool behavior using TBB. But whenever I read documents about TBB they always talk about parallel-for, parallel-dowhile etc. In contrast what I need is a main thread to assign tasks to a thread pool so those tasks will be executed 'on their own' - execute tasks asynchronously. Tasks here can be event handling for a GUI. Is the TBB task scheduler appropriate for such behavior? The impression I got from task scheduler is that it's only beneficial if I have tasks that can be broken down and executed in parallel to each other. Alexey Kukanov Starting from version 3.0, TBB has

I have a strange behavior on the Nexus 5 when going in and out to the sleep mode. It kills and relaunchs the app in a really strange way. I show you the log: Going into sleep mode (pressing the power button) 17.005: E/MotherActivity(28940): onPause called 17.025: E/MotherActivity(28940): onStop called 17.315: E/MotherActivity(28940): onDestroy called 17.365: E/GameTuto1Activity(28940): MainActivity Constructor called 17.365: E/MotherActivity(28940): onCreate called 17.695: E/MotherActivity(28940): onStart called 17.705: E/MotherActivity(28940): onResume called 17.705: E/MotherActivity(28940):

I have a scenario that I'm trying to turn into a more responsive UI by pre-fetching some sub-elements of the results before they're actually required by the user if possible. I'm unclear on how best to approach the threading, so I'm hoping someone can provide some advice. Scenario There is search form (.NET rich client) that enable the user to select an account for a given customer. The user searches for given text to find a collection of customers which are then displayed in a result grid. Then when the user selects a customer, the list of accounts for that customer are searched for and

I have a ThreadPoolExecutor that seems to be lying to me when I call getActiveCount(). I haven't done a lot of multithreaded programming however, so perhaps I'm doing something incorrectly. Here's my TPE @Override public void afterPropertiesSet() throws Exception { BlockingQueue<Runnable> workQueue; int maxQueueLength = threadPoolConfiguration.getMaximumQueueLength(); if (maxQueueLength == 0) { workQueue = new LinkedBlockingQueue<Runnable>(); } else { workQueue = new LinkedBlockingQueue<Runnable>(maxQueueLength); } pool = new ThreadPoolExecutor( threadPoolConfiguration.getCorePoolSize(),