void Component::run()
{
try {
std::cerr << "starting component " << name << "..." << std::endl;
startIO();
std::cerr << " ... " << name << " ready." << std::endl;
} catch (std::exception & ex) {
log->error("Cannot startup component:", &ex);
try {
state = STATE_FAILURE;
meta.reportState(state, "Cannot startup component:", &ex);
} catch (CMSException & me) {
log->error("cannot report failure state", & me);
}
requestExit();
}
while (!exitRequested()) {
// Report that we are alive before we check system ready status,
// (in case we were stalled due to a long act() or react() this
// means we "report back" to the rest of the system)
meta.IamAlive();
//printf("run %i\n",exitRequested());
// Check at every loop that the total system is ready
bool exitFlag = false;
synchronized (&meta) {
if (!meta.isSystemReady()) {
log->info("waiting for system to become ready");
}
while (!meta.isSystemReady()) {
try {
meta.wait(1000);
} catch (decaf::lang::Exception & ie) {
ie.printStackTrace();
}
if (meta.isSystemReady()) {
log->info("system ready - let's go");
}
if (exitRequested()) {
exitFlag = true;
break;
}
}
}
if (exitFlag) break;
try {
// Check if we should do something proactively:
long long before = System::currentTimeMillis();
act();
long long timeSpentInAct = System::currentTimeMillis() - before;
meta.statistics()->actTime((long)timeSpentInAct);
} catch (std::exception & e) {
log->error("error when trying to act", & e);
try {
state = STATE_FAILURE;
meta.reportState(state, "error when trying to act", &e);
} catch (CMSException & me) {
log->error("cannot report failure state", & me);
}
requestExit();
return;
}
Receiver * r = NULL;
synchronized (&mutex) {
if (inputWaiting.empty()) {
// block until input becomes available
mutex.wait(waitingTime);
}
// check again
if (!inputWaiting.empty()) {
r = inputWaiting.front();
inputWaiting.pop();
}
}
if (r == NULL) continue;
//assert(receivers.contains(r)); // the receiver that alerted us is not one of our receivers;
SEMAINEMessage * message = r->getMessage();
assert(message != NULL); // Receiver alerted me but has no message
meta.statistics()->countMessageReceived();
try {
// time that the message travelled, in "user" time (ms since system startup -- this should be independent of clock asynchrony)
long long timeMessageTravelled = meta.getTime() - message->getUsertime();
meta.statistics()->transmitTime((long)timeMessageTravelled);
// Now, do something meaningful with the message,
// and possibly send output via the Senders.
long long before = System::currentTimeMillis();
react(message);
delete message;
long long timeSpentInReact = System::currentTimeMillis() - before;
meta.statistics()->reactTime((long)timeSpentInReact);
} catch (std::exception & e) {
log->error("error when trying to react", &e);
try {
state = STATE_FAILURE;
std::string errMsg = CMSLogger::toLogMessageText("error when trying to react", &e)
+ "(message was: " + CMSLogger::message2logString(message) + ")";
meta.reportState(state, errMsg);
} catch (CMSException & me) {
log->error("cannot report failure state", & me);
}
requestExit();
return;
}
}
}
