TY - JOUR
T1 - A multiply hierarchical automaton semantics for the IWIM coordination model
AU - Banach, Richard
AU - Arbab, Farhad
AU - Papadopoulos, George A.
AU - Glauert, John R. W.
PY - 2003
Y1 - 2003
N2 - The drawbacks of programming coordination activities directly within the applications software that needs them are briefly reviewed. Coordination programming helps to separate concerns, making complex coordination protocols into standalone entities, permitting separate development, verification, maintenance, and reuse. The IWIM coordination model is described, and a formal automata theoretic version of the model is developed, capturing the essentials of the framework in a fibration based approach. Specifically, families of worker automata have their communication governed by a state of a manager automaton, whose transitions correspond to reconfigurations. To capture the generality of processes in IWIM systems, the construction is generalised so that process automata can display both manager and worker traits. The relationship with other formalisations of the IWIM conception of the coordination principle is explored.
AB - The drawbacks of programming coordination activities directly within the applications software that needs them are briefly reviewed. Coordination programming helps to separate concerns, making complex coordination protocols into standalone entities, permitting separate development, verification, maintenance, and reuse. The IWIM coordination model is described, and a formal automata theoretic version of the model is developed, capturing the essentials of the framework in a fibration based approach. Specifically, families of worker automata have their communication governed by a state of a manager automaton, whose transitions correspond to reconfigurations. To capture the generality of processes in IWIM systems, the construction is generalised so that process automata can display both manager and worker traits. The relationship with other formalisations of the IWIM conception of the coordination principle is explored.
U2 - 10.3217/jucs-009-01-0002
DO - 10.3217/jucs-009-01-0002
M3 - Article
VL - 9
SP - 2
EP - 33
JO - J.UCS Journal of Universal Computer Science
JF - J.UCS Journal of Universal Computer Science
IS - 1
ER -