mbed_example / Mbed OS events_ex_3

main.cpp

Committer:
sarahmarshy
Date:
2017-09-07
Revision:
0:fca134a32b61

File content as of revision 0:fca134a32b61:

#include "mbed_events.h"
#include <stdio.h>

/**
Event queues easily align with module boundaries, where internal state can be 
implicitly synchronized through event dispatch. Multiple modules can use 
independent event queues, but still be composed through the EventQueue::chain function.
**/

int main() {
    // Create some event queues with pending events
    EventQueue a;
    a.call(printf, "hello from a!\n");
    
    EventQueue b;
    b.call(printf, "hello from b!\n");
    
    EventQueue c;
    c.call(printf, "hello from c!\n");
    
    // Chain c and b onto a's event queue. Both c and b will be dispatched
    // in the context of a's dispatch function.
    c.chain(&a);
    b.chain(&a);
    
    // Dispatching a will in turn dispatch b and c, printing hello from
    // all three queues
    a.dispatch();
}