#Cx programmer timer on delay how to

Create a continuation task that cleans up resources and Create a task that completes after the completion event is set. Connect the timer to the callback and start the timer. Create a call object that sets the completion event after the timer fires. A task completion event that is set when a timer fires.Īuto fire_once = new timer(timeout, 0, nullptr, false)

Task complete_after(unsigned int timeout)

Creates a task that completes after the specified delay. If the failure task completes first, the continuation cancels the token source to cancel the overall task. The cancel_after_timeout function creates a continuation task that runs when the success or failure task completes. The second task indicates failure and completes after the specified timeout. The first task indicates success and completes after the provided task completes. The cancel_after_timeout function creates two tasks. The cancel_after_timeout function builds on the complete_after function to cancel a task if that task doesn't complete before a given timeout. When the event is set, listener tasks complete and their continuations are scheduled to run.įor more information about the timer and call classes, which are part of the Asynchronous Agents Library, see Asynchronous Message Blocks. By using the task_completion_event class, you can define a task that completes after a thread or another task signals that a value is available. It uses a timer object and a call object to set a task_completion_event object after the specified delay. The complete_after function creates a task object that completes after the specified delay. The following example shows the complete_after and cancel_after_timeout functions. Example: complete_after and cancel_after_timeout functions You can also introduce timeouts, delay handling of user input for a predetermined time, and so on. You can use this method to build loops that occasionally poll for data.

#Cx programmer timer on delay how to

This example shows how to use the concurrency::task, concurrency::cancellation_token_source, concurrency::cancellation_token, concurrency::task_completion_event, concurrency::timer, and concurrency::call classes to create a task that completes after a delay.