Christopher Haster / events

Note! This project has moved to github.com/armmbed/mbed-events

Dependents:   SimpleHTTPExample

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This project has moved to mbed-events

Composable event loops combine the cheap synchronicity of event loops with the composability of preempted threads.

Two modular event queue classes are provided:

  • EventLoop - for loops coupled with a c++ managed thread
  • EventQueue - for manually managed event queues

The Event class takes advantage of the extensibility of FuncPtr to allow an event to be passed through APIs as a normal function.

More information on composable event loops.

EventQueue.h@0:b1b901ae3696, 2016-04-20 (annotated)

Committer:
Christopher Haster
Date:
Wed Apr 20 11:43:51 2016 -0500
Revision:
0:b1b901ae3696
Child:
1:2202c19570e5
Initial commit of Event and EventQueue classes

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Christopher Haster 0:b1b901ae3696 1 /* EventQueue
Christopher Haster 0:b1b901ae3696 2 *
Christopher Haster 0:b1b901ae3696 3 * Flexible queue for managing events
Christopher Haster 0:b1b901ae3696 4 */
Christopher Haster 0:b1b901ae3696 5 #ifndef EVENT_QUEUE_H
Christopher Haster 0:b1b901ae3696 6 #define EVENT_QUEUE_H
Christopher Haster 0:b1b901ae3696 7
Christopher Haster 0:b1b901ae3696 8
Christopher Haster 0:b1b901ae3696 9 /** Flexible queue for managing events
Christopher Haster 0:b1b901ae3696 10 */
Christopher Haster 0:b1b901ae3696 11 class EventQueue {
Christopher Haster 0:b1b901ae3696 12 public:
Christopher Haster 0:b1b901ae3696 13 /** Dispatch pending events
Christopher Haster 0:b1b901ae3696 14 * @param milli Time to wait for events in milliseconds,
Christopher Haster 0:b1b901ae3696 15 * 0 indicates to return immediately if no events are pending
Christopher Haster 0:b1b901ae3696 16 */
Christopher Haster 0:b1b901ae3696 17 void dispatch(unsigned milli=-1);
Christopher Haster 0:b1b901ae3696 18
Christopher Haster 0:b1b901ae3696 19 private:
Christopher Haster 0:b1b901ae3696 20 struct event {
Christopher Haster 0:b1b901ae3696 21 struct event *next;
Christopher Haster 0:b1b901ae3696 22 void (*callback)(void *);
Christopher Haster 0:b1b901ae3696 23 void *data;
Christopher Haster 0:b1b901ae3696 24 };
Christopher Haster 0:b1b901ae3696 25
Christopher Haster 0:b1b901ae3696 26 void event_register(struct event *event);
Christopher Haster 0:b1b901ae3696 27 void event_unregister(struct event *event);
Christopher Haster 0:b1b901ae3696 28
Christopher Haster 0:b1b901ae3696 29 template <typename F>
Christopher Haster 0:b1b901ae3696 30 friend class Event;
Christopher Haster 0:b1b901ae3696 31
Christopher Haster 0:b1b901ae3696 32 struct event *_queue;
Christopher Haster 0:b1b901ae3696 33 };
Christopher Haster 0:b1b901ae3696 34
Christopher Haster 0:b1b901ae3696 35
Christopher Haster 0:b1b901ae3696 36 #endif