*/ REBVAL *Find_Last_Event (REBINT model, REBINT type)
/*
** Find the last event in the queue by the model
** Check its type, if it matches, then return the event or NULL
**
**
***********************************************************************/
{
REBVAL *port;
REBVAL *value;
REBVAL *state;
port = Get_System(SYS_PORTS, PORTS_SYSTEM);
if (!IS_PORT(port)) return NULL; // verify it is a port object
// Get queue block:
state = VAL_OBJ_VALUE(port, STD_PORT_STATE);
if (!IS_BLOCK(state)) return NULL;
for (value = VAL_BLK_TAIL(state) - 1; value >= VAL_BLK(state); -- value) {
if (VAL_EVENT_MODEL(value) == model) {
if (VAL_EVENT_TYPE(value) == type) {
return value;
} else {
return NULL;
}
}
}
return NULL;
}
*/ REBVAL *Append_Event()
/*
** Append an event to the end of the current event port queue.
** Return a pointer to the event value.
**
** Note: this function may be called from out of environment,
** so do NOT extend the event queue here. If it does not have
** space, return 0. (Should it overwrite or wrap???)
**
***********************************************************************/
{
REBVAL *port;
REBVAL *value;
REBVAL *state;
port = Get_System(SYS_PORTS, PORTS_SYSTEM);
if (!IS_PORT(port)) return 0; // verify it is a port object
// Get queue block:
state = VAL_BLK_SKIP(port, STD_PORT_STATE);
if (!IS_BLOCK(state)) return 0;
// Append to tail if room:
if (SERIES_FULL(VAL_SERIES(state))) Crash(RP_MAX_EVENTS);
VAL_TAIL(state)++;
value = VAL_BLK_TAIL(state);
SET_END(value);
value--;
SET_NONE(value);
//Dump_Series(VAL_SERIES(state), "state");
//Print("Tail: %d %d", VAL_TAIL(state), nn++);
return value;
}
