static void on_chain(LwqqAsyncEvent* caller,LwqqAsyncEvent* called)
{
called->result = caller->result;
called->failcode = caller->failcode;
called->lc = caller->lc;
lwqq_async_event_finish(called);
}
void lwqq_async_add_event_listener(LwqqAsyncEvent* event,LwqqCommand cmd)
{
LwqqAsyncEvent_* event_ = (LwqqAsyncEvent_*) event;
if(event == NULL){
vp_do(cmd,NULL);
return ;
}else if(event_->cmd.func== NULL)
event_->cmd = cmd;
else
vp_link(&event_->cmd,&cmd);
if(event->failcode == LWQQ_CALLBACK_SYNCED)
lwqq_async_event_finish(event);
}
void lwqq_async_add_event_chain(LwqqAsyncEvent* caller,LwqqAsyncEvent* called)
{
/**indeed caller->lc may be NULL when recursor */
called->lc = caller->lc;
LwqqAsyncEvent_* called_ = (LwqqAsyncEvent_*)called;
//cancel previous chained event
if(called_->chained){
LwqqAsyncEvent_* chained_ = (LwqqAsyncEvent_*)called_->chained;
vp_cancel0(chained_->cmd);
}
called_->chained = caller;
if(caller->failcode == LWQQ_CALLBACK_SYNCED){
//when sync enabled, caller and called must finished already.
//so free caller ,and do not trigger anything
called->result = caller->result;
called->failcode = caller->failcode;
lwqq_async_event_finish(caller);
}else{
lwqq_async_add_event_listener(caller,_C_(2p,on_chain,caller,called));
}
}
static void async_call_on_chain(LwqqAsyncEvent* ev,void* data)
{
lwqq_async_event_finish((LwqqAsyncEvent*)data);
}
