MATLAB Programming

Accessing Files with Memory-Mapping
% yet ready.
m.Data(1) = 0;
str = input('Enter send string (or RETURN to end): ', 's');
len = length(str);
if (len == 0)
disp('Terminating SEND function.')
break;
end
str = str(1:min(len, 255));
% Message limited to 255 chars.
end
% Update the file via the memory map.
m.Data(2:len+1) = str;
m.Data(1)=len;
% Wait until the first byte is set back to zero,
% indicating that a response is available.
while (m.Data(1) ~= 0)
pause(.25);
end
% Display the response.
disp('response from ANSWER is:')
disp(char(m.Data(2:len+1))')
The answer Function
The answer function starts a server that, using memory-mapping, watches
for a message from send. When the message is received, answer replaces the
message with an uppercase version of it, and sends this new message back
to send.
To use answer, call it with no inputs.
function answer
% Respond to SEND using memmapfile class.
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