inp = raw_input(CLIENT_PROMPT)
except EOFError:
break
sinput = inp.split()
cmd = sinput[0]
# Supported commands - enter | exit
# Use `enter` to acquire the distributed lock before entering the critical
# section. The process will wait until the lock is available.
# Once acquired, the distributed lock can be released with the `exit` command
# If the process does not own the distributed lock, this will be a no-op
if cmd == 'enter':
print "Waiting for mutex lock..."
# Multicast request to all processes in its group
cs_request = RCOMessage(mp.local_name, "", "MCAST_CS_REQUEST", mp.local_name)
mp.co_multicast(cs_request)
# Wait until lock is acquired
lock_acquired_event.wait()
print "Inside critical section. Type exit to quit."
elif cmd == 'exit':
if lock_acquired:
print "Leaving critical section. Releasing mutex lock now."
lock_acquired = False
lock_acquired_event.clear()
acks_received = 0
# Multicast release to all processes in its group
cs_release = RCOMessage(mp.local_name, "", "MCAST_CS_RELEASE", mp.local_name)
mp.co_multicast(cs_release)
else:
print "Umm... You are not in a critical section..."
else:
