multithreading

问题 This question already has answers here : Checking for null before event dispatching… thread safe? (6 answers) Closed 6 hours ago . This is how I have always written event raisers; for example PropertyChanged: public event PropertyChangedEventHandler PropertyChanged; private void RaisePropertyChanged(string name) { var handler = PropertyChanged; if (handler != null) handler(this, new PropertyChangedEventArgs(name)); } In the latest Visual Studio, however, the light bulb thingamabob suggested

问题 This is more of a theoretical question. I'm not sure if all concepts, compiler behaviors, etc. are uptodate and still in use, but I'd like to have confirmation if I'm correctly understanding some concepts I'm trying to learn. Language is Java. From what I've understood so far, on X86 architecture, StoreLoad barriers (despite the exact CPU instructions used to implement them) are put after Volatile writes, to make them visible to subsequent Volatile Reads in other threads (since x86 doesn't

问题 This is more of a theoretical question. I'm not sure if all concepts, compiler behaviors, etc. are uptodate and still in use, but I'd like to have confirmation if I'm correctly understanding some concepts I'm trying to learn. Language is Java. From what I've understood so far, on X86 architecture, StoreLoad barriers (despite the exact CPU instructions used to implement them) are put after Volatile writes, to make them visible to subsequent Volatile Reads in other threads (since x86 doesn't

问题 This is more of a theoretical question. I'm not sure if all concepts, compiler behaviors, etc. are uptodate and still in use, but I'd like to have confirmation if I'm correctly understanding some concepts I'm trying to learn. Language is Java. From what I've understood so far, on X86 architecture, StoreLoad barriers (despite the exact CPU instructions used to implement them) are put after Volatile writes, to make them visible to subsequent Volatile Reads in other threads (since x86 doesn't

问题 It's similar to many questions, but not rly. I need something like BeginInvoke for Winforms, but not for winforms only. So i need single method, that works for any type of application, so i'm calling void ExecuteInMainContext(Action action) { ... } and it should work, be called from Console, winforms, wpf and so on. All methods i saw was using BeginInvoke for winforms, Dispatcher.Invoke for WPF etc. But i should call it from library and i don't know from where it's called. And it also should

问题 I'm looking at spyne to be able to make a webservice that handles requests in json. The problem is that I still didn't managed to get it working for more than one request at a time. I thought this https://github.com/arskom/spyne/blob/master/examples/async.py might solve, but I can't seem to make it work as the get_callback_info() isn't found anywhere... Does anyone know any example of how to handle multiple requests at the same time with spyne? Thanks! 回答1: You mean you can't get Spyne to be

问题 I'm looking at spyne to be able to make a webservice that handles requests in json. The problem is that I still didn't managed to get it working for more than one request at a time. I thought this https://github.com/arskom/spyne/blob/master/examples/async.py might solve, but I can't seem to make it work as the get_callback_info() isn't found anywhere... Does anyone know any example of how to handle multiple requests at the same time with spyne? Thanks! 回答1: You mean you can't get Spyne to be

问题 I'm looking at spyne to be able to make a webservice that handles requests in json. The problem is that I still didn't managed to get it working for more than one request at a time. I thought this https://github.com/arskom/spyne/blob/master/examples/async.py might solve, but I can't seem to make it work as the get_callback_info() isn't found anywhere... Does anyone know any example of how to handle multiple requests at the same time with spyne? Thanks! 回答1: You mean you can't get Spyne to be

问题 I am using grpc-java and have 3 services, A, B and C. I call service A and then service A calls B and C. I am using Hystrix in the calls to B and C. C in turn spawns another thread to call another service. I have ClientInterceptors and ServerInterceptors which passes around the traceId. I can see the traceIds in the Context and logs as long as it is a gRPC worker thread but lose them when the call moves to another thread - RxIoScheduler thread or Hystrix thread. How do I pass the traceId

问题 I am using grpc-java and have 3 services, A, B and C. I call service A and then service A calls B and C. I am using Hystrix in the calls to B and C. C in turn spawns another thread to call another service. I have ClientInterceptors and ServerInterceptors which passes around the traceId. I can see the traceIds in the Context and logs as long as it is a gRPC worker thread but lose them when the call moves to another thread - RxIoScheduler thread or Hystrix thread. How do I pass the traceId