Ben,
Thanks very much for your reply. Everything you say is true, and the system can
certainly be made to work (and without the performance problem I described)
using only Condition variables.
I think the correct version of my pseudo-code becomes:
def sender():
while alive():
wait_for_my_data_from_hardware()
with condition:
send_data_to_receiver() # I think this has to be done inside
the lock on the Condition
condition.raise()
def receiver():
while alive():
while data available:
receive_all_data_from_sender()
process_data()
with condition: # only sleep when we have nothing to do
condition.wait()
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