27 lines
627 B
C
27 lines
627 B
C
#include <internals/events.h>
|
|
#include <events.h>
|
|
|
|
volatile struct Event event_queue[EVENTS_QUEUE_SIZE];
|
|
volatile int queue_start = 0;
|
|
volatile int queue_size = 0;
|
|
|
|
/*
|
|
event_push()
|
|
Queues a user-defined event, allowing it to be retrieved by getevent()
|
|
or pollevent() later. Pushing ET_None events is not allowed.
|
|
Returns non-zero on error.
|
|
*/
|
|
int event_push(struct Event event)
|
|
{
|
|
if(queue_size >= EVENTS_QUEUE_SIZE) return 1;
|
|
if(event.type == ET_None) return 2;
|
|
|
|
int index = queue_start + queue_size;
|
|
if(index >= EVENTS_QUEUE_SIZE) index -= EVENTS_QUEUE_SIZE;
|
|
|
|
event_queue[index] = event;
|
|
queue_size++;
|
|
|
|
return 0;
|
|
}
|