Dining Philosophers Problem (DPP) example for the QP active object framework. Demonstrates: event-driven programming, hierarchical state machines in C++, modeling and graphical state machine design, code generation, preemptive multitasking, software tracing, power saving mode, direct event posting, publish-subscribe. More information available in the [[/users/QL/notebook|Quantum Leaps Notebook pages]]. See also [[http://www.state-machine.com|state-machine.com]].
Diff: dpp.h
- Revision:
- 0:efb9ac8d1a88
- Child:
- 4:6189d844a1a2
diff -r 000000000000 -r efb9ac8d1a88 dpp.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/dpp.h Sat Feb 12 23:22:47 2011 +0000 @@ -0,0 +1,50 @@ +////////////////////////////////////////////////////////////////////////////// +// Product: DPP example +// Last Updated for Version: 4.0.00 +// Date of the Last Update: Apr 07, 2008 +// +// Q u a n t u m L e a P s +// --------------------------- +// innovating embedded systems +// +// Copyright (C) 2002-2008 Quantum Leaps, LLC. All rights reserved. +// +// This software may be distributed and modified under the terms of the GNU +// General Public License version 2 (GPL) as published by the Free Software +// Foundation and appearing in the file GPL.TXT included in the packaging of +// this file. Please note that GPL Section 2[b] requires that all works based +// on this software must also be made publicly available under the terms of +// the GPL ("Copyleft"). +// +// Alternatively, this software may be distributed and modified under the +// terms of Quantum Leaps commercial licenses, which expressly supersede +// the GPL and are specifically designed for licensees interested in +// retaining the proprietary status of their code. +// +// Contact information: +// Quantum Leaps Web site: http://www.quantum-leaps.com +// e-mail: info@quantum-leaps.com +////////////////////////////////////////////////////////////////////////////// +#ifndef dpp_h +#define dpp_h + +enum DPPSignals { + EAT_SIG = Q_USER_SIG, // published by Table to let a philosopher eat + DONE_SIG, // published by Philosopher when done eating + TERMINATE_SIG, // published by BSP to terminate the application + MAX_PUB_SIG, // the last published signal + + HUNGRY_SIG, // posted from hungry Philosopher to Table + MAX_SIG // the last signal +}; + +struct TableEvt : public QEvent { + uint8_t philoNum; // philosopher number +}; + +enum { N_PHILO = 5 }; // number of philosophers + +extern QActive * const AO_Philo[N_PHILO]; // "opaque" pointers to Philo AO +extern QActive * const AO_Table; // "opaque" pointer to Table AO + +#endif // dpp_h