autoresetevent

问题 I have read the documentation on this and I think I understand. An AutoResetEvent resets when the code passes through event.WaitOne() , but a ManualResetEvent does not. Is this correct? 回答1: Yes. It's like the difference between a tollbooth and a door. The ManualResetEvent is the door, which needs to be closed (reset) manually. The AutoResetEvent is a tollbooth, allowing one car to go by and automatically closing before the next one can get through. 回答2: Just imagine that the AutoResetEvent

问题 I have read the documentation on this and I think I understand. An AutoResetEvent resets when the code passes through event.WaitOne() , but a ManualResetEvent does not. Is this correct? 回答1: Yes. It's like the difference between a tollbooth and a door. The ManualResetEvent is the door, which needs to be closed (reset) manually. The AutoResetEvent is a tollbooth, allowing one car to go by and automatically closing before the next one can get through. 回答2: Just imagine that the AutoResetEvent

问题 I need some mechanism reminiscent of Win32 reset events that I can check via functions having the same semantics with WaitForSingleObject() and WaitForMultipleObjects() (Only need the ..SingleObject() version for the moment) . But I am targeting multiple platforms so all I have is boost::threads (AFAIK) . I came up with the following class and wanted to ask about the potential problems and whether it is up to the task or not. Thanks in advance. class reset_event { bool flag, auto_reset; boost

问题 I'm trying to implement AutoResetEvent . For the purpose I use a very simple class : public class MyThreadTest { static readonly AutoResetEvent thread1Step = new AutoResetEvent(false); static readonly AutoResetEvent thread2Step = new AutoResetEvent(false); void DisplayThread1() { while (true) { Console.WriteLine("Display Thread 1"); Thread.Sleep(1000); thread1Step.Set(); thread2Step.WaitOne(); } } void DisplayThread2() { while (true) { Console.WriteLine("Display Thread 2"); Thread.Sleep(1000)

问题 I have an object in a worker thread, which I can instruct to stop running. I can implement this using a bool or an AutoResetEvent: boolean: private volatile bool _isRunning; public void Run() { while (_isRunning) { doWork(); Thread.Sleep(1000); } } AutoResetEvent: private AutoResetEvent _stop; public void Run() { do { doWork(); } while (!_stop.WaitOne(1000)); } The Stop() method would then set _isRunning to false, or call _stop.Set() . Apart from that the solution with AutoResetEvent may stop

问题 I have a windows application using SqlDependency running at separated thread pool, this application represents a log monitor UI get the latest rows added in a specific table in the database and view it in a DataGridView. You can see the application source code from this LINK, or follow this script. const string tableName = "OutgoingLog"; const string statusMessage = "{0} changes have occurred."; int changeCount = 0; private static DataSet dataToWatch = null; private static SqlConnection

问题 I want my function to wait until the event WebBrowser.DocumentCompleted is completed. I am using AutoResetEvent and here is my code: private static WebBrowser _browser = new WebBrowser(); private static AutoResetEvent _ar = new AutoResetEvent(false); private bool _returnValue = false; public Actions() //constructor { _browser.DocumentCompleted += PageLoaded; } public bool MyFunction() { _browser.Navigate("https://www.somesite.org/"); _ar.WaitOne(); // wait until receiving the signal, _ar.Set(

问题 what happens if a manual-reset event is set using setEvent but not reset using ResetEvent; and that event is triggered multiple times.i.e. while the event is getting processed, again the event is set. following is the sample task: void foo() { ... SetEvent(hEvent1); ... } void foo1() { ... SetEvent(hEvent2); ... } int MainHandler() { ... dwEvent = WaitForMultipleObjects(2, ghEvents, // array of objects FALSE, // wait for any object 5000); switch(dwEvent) { case hEvent1: //do something break;

问题 I am new in C# and currently working on the backend code to support PIN pad. Basically, my code OpenDevice() -> RequestPIN() -> key in PIN on PIN PAD -> GetResultPIN() -> ConsolePrintOutPIN() -> Print keyed PIN on the Console I don't know how to write thread for this, so that once the "Enter key" is hit on the device after PIN, the system would automatically rolls to function GetResultPIN() . So, with my elementary knowledge, I wrote the following codes using Console.ReadLine() to separate

问题 I've had the following code in my application for some years and have never seen an issue from it. while ((PendingOrders.Count > 0) || (WaitHandle.WaitAny(CommandEventArr) != 1)) { lock (PendingOrders) { if (PendingOrders.Count > 0) { fbo = PendingOrders.Dequeue(); } else { fbo = null; } } // Do Some Work if fbo is != null } Where CommandEventArr is made up of the NewOrderEvent (an auto reset event) and the ExitEvent (a manual reset event). But I'm not sure if this is thread safe (assuming N