first commit

extern/stdcxx/4.2.1/examples/include/teller.h

@@ -0,0 +1,80 @@
+/**************************************************************************
+ *
+ * teller.h - Header for bank teller sample program.
+ *
+ * $Id: teller.h 550991 2007-06-26 23:58:07Z sebor $
+ *
+ ***************************************************************************
+ *
+ * Licensed to the Apache Software  Foundation (ASF) under one or more
+ * contributor  license agreements.  See  the NOTICE  file distributed
+ * with  this  work  for  additional information  regarding  copyright
+ * ownership.   The ASF  licenses this  file to  you under  the Apache
+ * License, Version  2.0 (the  "License"); you may  not use  this file
+ * except in  compliance with the License.   You may obtain  a copy of
+ * the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the  License is distributed on an  "AS IS" BASIS,
+ * WITHOUT  WARRANTIES OR CONDITIONS  OF ANY  KIND, either  express or
+ * implied.   See  the License  for  the  specific language  governing
+ * permissions and limitations under the License.
+ *
+ * Copyright 1994-2006 Rogue Wave Software.
+ * 
+ **************************************************************************/
+
+
+#ifndef TELLER_H_INCLUDED
+#define TELLER_H_INCLUDED
+
+inline unsigned long int lcg_rand (int n);
+
+class Customer
+{
+public:
+
+    int arrivalTime;
+    int processTime;
+
+    Customer (int at = 0)
+        : arrivalTime (at),
+          processTime (2 + lcg_rand (6)) {}
+
+    bool done () {   // are we done with our transaction?
+        return --processTime < 0;
+    }
+
+    bool operator< (const Customer& c) const {   // order by arrival time
+        return arrivalTime < c.arrivalTime;
+    }
+};
+
+
+class Teller
+{
+public:
+    Teller (): free (true) { }
+
+    bool isFree () {   // are we free to service new customer?
+        if (free)
+            return true;
+        if (customer.done())
+            free = true;
+        return free;
+    }
+
+    void addCustomer (const Customer &c) {   // start serving new customer
+        customer = c;
+        free = false;
+    }
+
+private:
+
+    bool     free;
+    Customer customer;
+};
+
+#endif   // TELLER_H_INCLUDED