private void allCorrect() {
int reg;
for (reg = 0; reg < NUM_REGISTERS; reg++) {
boolean allAcks = true;
int i;
for (i = 0; (i < correct.getSize()) && allAcks; i++) {
SampleProcess p = correct.getProcess(i);
if (p.isCorrect() && !writeSet.get(reg).contains(p)) allAcks = false;
}
if (allAcks) {
writeSet.get(reg).clear();
try {
SharedWriteReturn ev = new SharedWriteReturn(mainchannel, Direction.UP, this);
ev.reg = reg;
ev.go();
debug("Sent WriteReturn");
} catch (AppiaEventException ex) {
ex.printStackTrace();
}
}
}
}
private void handleProcessInit(ProcessInitEvent event) {
correct = event.getProcessSet();
init();
try {
event.go();
} catch (AppiaEventException ex) {
ex.printStackTrace();
}
}
private void handleSharedRead(SharedRead event) {
try {
SharedReadReturn ev = new SharedReadReturn(mainchannel, Direction.UP, this);
ev.reg = event.reg;
ev.value = value[event.reg];
ev.go();
} catch (AppiaEventException ex) {
ex.printStackTrace();
}
}
private void handleCrash(Crash event) {
correct.setCorrect(event.getCrashedProcess(), false);
try {
event.go();
} catch (AppiaEventException ex) {
ex.printStackTrace();
}
allCorrect();
}
private void handleSharedWrite(SharedWrite event) {
debug("received SharedWrite");
try {
WriteEvent ev = new WriteEvent(mainchannel, Direction.DOWN, this);
ev.getMessage().pushObject(event.value);
ev.getMessage().pushInt(event.reg);
ev.go();
} catch (AppiaEventException ex) {
ex.printStackTrace();
}
}
private void handleWriteEvent(WriteEvent event) {
int reg = event.getMessage().popInt();
Object val = event.getMessage().popObject();
value[reg] = val;
try {
AckEvent ev = new AckEvent(pp2pchannel, Direction.DOWN, this);
ev.getMessage().pushInt(reg);
ev.dest = event.source;
ev.go();
} catch (AppiaEventException ex) {
ex.printStackTrace();
}
}
public void handle(Event event) {
if (event instanceof ChannelInit) handleChannelInit((ChannelInit) event);
else if (event instanceof ProcessInitEvent) handleProcessInit((ProcessInitEvent) event);
else if (event instanceof Crash) handleCrash((Crash) event);
else if (event instanceof SharedRead) handleSharedRead((SharedRead) event);
else if (event instanceof SharedWrite) handleSharedWrite((SharedWrite) event);
else if (event instanceof WriteEvent) handleWriteEvent((WriteEvent) event);
else if (event instanceof AckEvent) handleAckEvent((AckEvent) event);
else {
debug("Unwanted event received (\"" + event + "\"), ignoring.");
try {
event.go();
} catch (AppiaEventException ex) {
ex.printStackTrace();
}
}
}
private void handleChannelInit(ChannelInit init) {
if (mainchannel == null) {
mainchannel = init.getChannel();
debug("mainchannel initiated");
try {
pp2pinit.start();
} catch (AppiaDuplicatedSessionsException ex) {
ex.printStackTrace();
}
} else {
if (init.getChannel() == pp2pinit) {
pp2pchannel = init.getChannel();
}
}
try {
init.go();
} catch (AppiaEventException ex) {
ex.printStackTrace();
}
}