threadpool

问题 I have a .NET application with a button. When I click the button I want the application to print thread stack of all threads to debug console. Is it possible to do it? Datte. 回答1: You can use the StackTrace class ( System.Diagnostics ) to get a stack trace of a Thread . You'd need to enumerate the threads, and (unfortunately) suspend them first, though. Here's the constructor of interest: http://msdn.microsoft.com/en-us/library/t2k35tat.aspx You may well need to create your own ThreadPool

问题 I've an Spring Boot REST async application, wanna adjust: Connections threads from clients (wanna REST request go in parallel) Thread numbers for @Async methods in my service tier pool of connections to DB Browsing documentations and sites found possibilities: corePoolSize value=... VS server.tomcat.max-threads = ... - What is the difference? spring.datasource.hikari.maximum-pool-size= ... VS spring.datasource.tomcat.max... = ... - What is the difference? 回答1: Assuming you are using Spring

问题 I would like to use the QueueUserWorkItem from the ThreadPool. When I use the following code everything works well. private int ThreadCountSemaphore = 0; private void (...) { var reportingDataList = new List<LBReportingData>(); ThreadCountSemaphore = reportingDataList.Count; using (var autoResetEvent = new AutoResetEvent(false)) { ThreadPool.QueueUserWorkItem((o) => this.FillReportingData(settings, reportingDataList[0], autoResetEvent)); ThreadPool.QueueUserWorkItem((o) => this

问题 I've been learning how to use the threadpools but I'm not sure that each of the threads in the pool are being executed properly and I suspect some are being executed more than once. I've cut down the code to the bare minimum and having been using Debug.WriteLine to try and work out what is going on but this produces some odd results. My code is as follows (based on code from (WaitAll for multiple handles on a STA thread is not supported): public void ThreadCheck() { string[] files;

问题 I have a C++ app in which I create pthreads to run user provided functions. I want to be able to be alerted in some way when a thread exits so that I can remove it from an array of pthread that I am using to keep the threads. Is there a way to do this, or should the function just set some "magic value". Because my main code that spawns the pthreads is in a sort of runloop, I can easily check for an exit condition. Also, is using a std::vector<pthread_t> overdoing to keep track of my threads

问题 I want the Windows thread pool (QueueUserWorkItem()) to call my class' member functions. Unfortunately this cannot be done directly by passing a member function pointer as an argument to QueueUserWorkItem(). What makes it difficult is that more than one member function must be callable and they have different signatures (all return void though). One probably need to add a few layers of abstraction to get this to work, but I'm not sure how to approach this. Any ideas? 回答1: This might help. You

问题 I want the Windows thread pool (QueueUserWorkItem()) to call my class' member functions. Unfortunately this cannot be done directly by passing a member function pointer as an argument to QueueUserWorkItem(). What makes it difficult is that more than one member function must be callable and they have different signatures (all return void though). One probably need to add a few layers of abstraction to get this to work, but I'm not sure how to approach this. Any ideas? 回答1: This might help. You

问题 The scenario I am facing is as below. Because ThreadPool is 1 instance per process so my question is that would method 1 cancel tasks queued by method 2 after 3 seconds ? http request comes in *method 1 gets executed first*: ThreadPool.QueueUserWorkItem x 3 WaitHandle.WaitAll for 3 seconds *method 2 gets executed after method 1*: ThreadPool.QueueUserWorkItem x 10 WaitHandle.WaitAll for 10 seconds Sorry I think I totally misunderstood the use of WaitHandle. It seems that if I do below

问题 I need to talk to an api to get information about teams. Each team has a unique id. I call the api with that id, and I get a list of players on each team (list of dicts). One of the keys for a player is another id that I can use to get more information about that player. I can bundle all these player_ids and make a call to the api to get all the additional information for each player in one api call. My question is this: I expect the number of teams to grow, it could be quite large. Also, the

问题 I'm writing a load-testing application in Java, and have a thread pool that executes tasks against the server under test. So to make 1000 jobs and run them in 5 threads I do something like this: ExecutorService pool = Executors.newFixedThreadPool(5); List<Runnable> jobs = makeJobs(1000); for(Runnable job : jobs){ pool.execute(job); } However I don't think this approach will scale very well, because I have to make all the 'job' objects ahead of time and have them sitting in memory until they