81 lines
2.1 KiB
C++
81 lines
2.1 KiB
C++
/**************************************************************************
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*
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* teller.h - Header for bank teller sample program.
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*
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* $Id: teller.h 550991 2007-06-26 23:58:07Z sebor $
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*
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***************************************************************************
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* permissions and limitations under the License.
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*
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* Copyright 1994-2006 Rogue Wave Software.
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*
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**************************************************************************/
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#ifndef TELLER_H_INCLUDED
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#define TELLER_H_INCLUDED
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inline unsigned long int lcg_rand (int n);
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class Customer
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{
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public:
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int arrivalTime;
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int processTime;
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Customer (int at = 0)
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: arrivalTime (at),
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processTime (2 + lcg_rand (6)) {}
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bool done () { // are we done with our transaction?
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return --processTime < 0;
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}
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bool operator< (const Customer& c) const { // order by arrival time
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return arrivalTime < c.arrivalTime;
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}
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};
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class Teller
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{
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public:
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Teller (): free (true) { }
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bool isFree () { // are we free to service new customer?
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if (free)
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return true;
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if (customer.done())
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free = true;
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return free;
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}
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void addCustomer (const Customer &c) { // start serving new customer
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customer = c;
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free = false;
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}
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private:
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bool free;
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Customer customer;
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};
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#endif // TELLER_H_INCLUDED
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