synchronization

问题 So I'm trying to create a simple multi-threaded game engine for the game I want to write. So far, everything has worked without any problems, I even know what steps I have to take to finish it. There is only one thing I don't know (well, technically, I know a solution for it, but I'm hoping there is something more elegant and faster): Basically, I have a seperate thread for every part of my engine - Graphics, Input, Physics, Audio, etc. The physics thread has a complete scene node structure

问题 So I'm trying to create a simple multi-threaded game engine for the game I want to write. So far, everything has worked without any problems, I even know what steps I have to take to finish it. There is only one thing I don't know (well, technically, I know a solution for it, but I'm hoping there is something more elegant and faster): Basically, I have a seperate thread for every part of my engine - Graphics, Input, Physics, Audio, etc. The physics thread has a complete scene node structure

问题 After upgrading to Android Studio 3.0 gradle snyc fails with the following error messages: Unable to resolve dependency for ':Skynavigator@debug/compileClasspath': Could not resolve project :SkyNavLib. Unable to resolve dependency for ':Skynavigator@debugAndroidTest/compileClasspath': Could not resolve project :SkyNavLib. Unable to resolve dependency for ':Skynavigator@debugUnitTest/compileClasspath': Could not resolve project :SkyNavLib. Unable to resolve dependency for ':Skynavigator

问题 The app is written in Delphi XE. I have two classes, a TBoss and TWorker, which are both based of of TThread. The TBoss is a single instance thread, which starts up and then will create about 20 TWorker threads. When the boss creates a instance of TWorker it assigns it a method to call synchronize on, when the Worker has finished with what it's doing it calls this method which allows the Boss to access a record on the Worker. However I feel this is a problem, calling synchronize appears to be

问题 Recently I have been working on a multiplayer networking app. I had successfully implemented the client server model using Bonjour services and NSStream objects. The two way communication has been done successfully. The problem I'm facing is: the two devices running the app are connected via local wifi. There is a latency problem while sending the messages from client to server and vice versa. Describing in brief: It's a car racing game with at most two players. One server and other client.

问题 When a new item is added in MySQL, it must be also indexed by Lucene. When an existing item is removed from MySQL, it must be also removed from Lucene's index. The idea is to write a script that will be called every x minutes via a scheduler (e.g. a CRON task). This is a way to keep MySQL and Lucene synchronized. What I managed until yet: For each new added item in MySQL, Lucene indexes it too. For each already added item in MySQL, Lucene does not reindex it (no duplicated items). This is the

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 4 months ago . I need to keep synchronized two folder on different host in Windows. I really think that something already done exists but I did not find anything (SyncToys is not an option), do you have something to suggest me? Requirements are: running as a service sync over a network shared path (ie \\myhost\myfolder ) 回答1:

问题 I just realized that I need to synchronize a significant amount of data collection code in an aspect but performance is a real concern. If performance degrades too much my tool will be thrown out. I will be writing ints and longs individually and to various arrays, ArrayLists and Maps. There will be multiple threads of an application that will make function calls that will be picked up by my aspect. What kind of things should I look out for that will negatively affect performance? What code

问题 I like to know do we synchronize the instance variable which are final. As variables are final there can not be change in the value. Can anybody explain this? 回答1: Do we synchronize instance variables which are final? Yes. You still have to synchronize mutable objects final != immutable public class Something { private final List list = new ArrayList(); public void add( String value ) { this.list.add( value ); } public int count() { return this.list.size(); } } Later Something s = new

问题 On constrained devices, I often find myself "faking" locks between 2 threads with 2 bools. Each is only read by one thread, and only written by the other. Here's what I mean: bool quitted = false, paused = false; bool should_quit = false, should_pause = false; void downloader_thread() { quitted = false; while(!should_quit) { fill_buffer(bfr); if(should_pause) { is_paused = true; while(should_pause) sleep(50); is_paused = false; } } quitted = true; } void ui_thread() { // new Thread(downloader