multithreading

问题 I have a python tool, that has basically this kind of setup: main process (P1) -> spawns a process (P2) that starts a tcp connection -> spawns a thread (T1) that starts a loop to receive messages that are sent from P2 to P1 via a Queue (Q1) server process (P2) -> spawns two threads (T2 and T3) that start loops to receive messages that are sent from P1 to P2 via Queues (Q2 and Q3) The problem I'm having is that when I stop my program (with Ctrl+C), it doesn't quit. The server process is ended,

问题 How can I start a thread in DLLMain means std :: thread - fundamentally. No means WinApi, and STL means. When I run the function in the flow, then I crash the application is called from this DLL. Thank you in advance. This code gets the hash sum on the file (exe) and writes it to a file. (* .txt). But the application crash void initialize() { string buffer; thread t(calclulateHash, ref(buffer)); t.detach(); } BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved) {

问题 How can I start a thread in DLLMain means std :: thread - fundamentally. No means WinApi, and STL means. When I run the function in the flow, then I crash the application is called from this DLL. Thank you in advance. This code gets the hash sum on the file (exe) and writes it to a file. (* .txt). But the application crash void initialize() { string buffer; thread t(calclulateHash, ref(buffer)); t.detach(); } BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved) {

问题 Collection class comes with a new method " parallelStream " in Java SDK 8. It is obvious that this new method provides a mechanism to consume collections in parallel. But, I wonder about how Java achieve this parallelism. What is the underlying mechanism? Is it simply a multithreaded execution? Or does fork/join framework (coming with Java SDK 7) step in? If the answer is neither then, how does it work and what are the advantages of it over the other two mechanisms? 回答1: Looking at the stream

问题 Collection class comes with a new method " parallelStream " in Java SDK 8. It is obvious that this new method provides a mechanism to consume collections in parallel. But, I wonder about how Java achieve this parallelism. What is the underlying mechanism? Is it simply a multithreaded execution? Or does fork/join framework (coming with Java SDK 7) step in? If the answer is neither then, how does it work and what are the advantages of it over the other two mechanisms? 回答1: Looking at the stream

问题 I'm trying to have a SoundPool play while a view object is being clicked. I have successfully implemented it but found out that the sound of the click will lag. I've been researching on StackOverFlow and on the internet for solutions and the best solution seems to be to have the SoundPool on a separate Thread. I'm very new to the whole Thread thing and so I don't really know what to do at the moment. I have followed THIS guide on creating a SoundPool thread, however, I don't know how to

问题 I am trying to count how many instances of a class generated during the run time of a process under multi-threading environment. The way how I do it is to increase a static counter in the constructor by looking at this post: How to Count Number of Instances of a Class So in multi-threading environment, here is how i define the class: class Television { private static volatile int counter = 0; public Television(){ counter ++; } } However, I am not sure whether there is a potential bug with the

问题 I am trying to count how many instances of a class generated during the run time of a process under multi-threading environment. The way how I do it is to increase a static counter in the constructor by looking at this post: How to Count Number of Instances of a Class So in multi-threading environment, here is how i define the class: class Television { private static volatile int counter = 0; public Television(){ counter ++; } } However, I am not sure whether there is a potential bug with the

问题 I'm trying to implement my own read/write lock using atomic types. I can easily define exclusive locks, but I fail to create locks for shared reader threads, like SRWLock does (see SRWLock). My question is how to implement locks that can be used in exclusive mode (one reader/writer threads at a time) or in shared mode (multiple reader threads at a time). I can't use std::mutex lock because it doesn't support multiple readers. Also I don't use boost, so no shared_mutex either. 回答1: The shared

问题 Looking for sample code to use tbb::concurrent_hash_map<K,V> from Intel Threading Building Blocks (TBB). I can insert, but I cannot seem to read the values back. The official Intel documentation appears to be somewhat lacking on the sample code side. Update The best docs are in "Pro TBB: C++ Parallel Programming with Threading Building Blocks" by Voss. Download this book for free (it's public domain). Ignore the Intel docs. They are essentially a collection of function signatures. 回答1: Intel