void RequestHandler::send_event(g_pid process, uint32_t listener_id, uint8_t* data, uint32_t length) {
// lock
g_atomic_lock(&process_map_lock);
if (processMap.count(process) > 0) {
UIRegisteredProcessData& procdat = processMap.at(process);
// add event data to dispatcher queue
UIEventDispatchData event_data;
event_data.output = procdat.output;
event_data.listener = listener_id;
event_data.data = data;
event_data.length = length;
event_dispatch_queue_add(event_data);
}
// unlock
process_map_lock = false;
}
/**
* Waits for responses from the window manager and stores them
* in the transaction message map.
*/
void g_ui::asynchronous_receiver_thread() {
while (true) {
// TODO properly check if each read/write was successful & validate the data length
// read the id
uint32_t idlen = sizeof(g_ui_transaction_id);
uint8_t id[idlen];
g_read(g_ui_channel_in, &id, idlen);
g_ui_transaction_id transaction = *((g_ui_transaction_id*) id);
// read the length
uint32_t lenlen = sizeof(uint32_t);
uint8_t len[lenlen];
g_read(g_ui_channel_in, &len, lenlen);
uint32_t length = *((uint32_t*) len);
// read the data
uint8_t* data = new uint8_t[length];
int32_t data_read = 0;
while (data_read < length) {
data_read += g_read(g_ui_channel_in, &data[data_read], length - data_read);
}
// no transaction? -> event
if (transaction == 0) {
// get id from data
g_value_placer data_reader(data);
uint32_t listener_id = data_reader.get<uint32_t>();
// notify listener
if (listeners.count(listener_id) > 0) {
g_listener* listener = listeners.at(listener_id);
// add event to dispatch queue
g_ui_event_dispatch_data ldata;
ldata.listener = listener;
ldata.data = data;
ldata.length = length;
event_dispatch_queue_add(ldata);
}
} else {
// does map even exist?
if (transaction_map == 0) {
g_logger::log("transaction map did not exist when receiving request");
break;
}
// check if data exists
if (transaction_map->count(transaction) < 1) {
g_logger::log("transaction map did not contain data for a request that was received");
break;
}
// update the data
g_ui_transaction_data* transaction_data = transaction_map->at(transaction);
transaction_data->data = data;
transaction_data->length = length;
transaction_data->waiting = false;
}
}
}
