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(* Title: HOL/UNITY/AllocBase.thy
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ID: $Id$
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Author: Lawrence C Paulson, Cambridge University Computer Laboratory
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Copyright 1998 University of Cambridge
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Common declarations for Chandy and Charpentier's Allocator
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*)
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AllocBase = Rename + Follows +
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consts
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NbT :: nat (*Number of tokens in system*)
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Nclients :: nat (*Number of clients*)
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rules
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NbT_pos "0 < NbT"
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(*This function merely sums the elements of a list*)
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consts tokens :: nat list => nat
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primrec
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"tokens [] = 0"
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"tokens (x#xs) = x + tokens xs"
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consts
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bag_of :: 'a list => 'a multiset
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primrec
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"bag_of [] = {#}"
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"bag_of (x#xs) = {#x#} + bag_of xs"
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end
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