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SimulateInterruptViaThreadAdapter.h

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00001 /*******************************************************************************
00002  *
00003  * Copyright (c) 2008-2010 Michael Schulze <mschulze@ivs.cs.uni-magdeburg.de>
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00018  *    * Neither the name of the copyright holders nor the names of
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00023  *    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
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00039 
00040 #ifndef __SimulateInterruptViaThreadAdapter_h__
00041 #define __SimulateInterruptViaThreadAdapter_h__
00042 
00043 #include <boost/thread.hpp>
00044 #include <boost/bind.hpp>
00045 #include "devices/nic/can/PAXCAN/RxInterrupt.h"
00046 #include "util/ios.h"
00047 
00048 namespace device {
00049     namespace nic {
00050         namespace CAN {
00051 
00064             template < class Base, class InterruptProvider = RxInterrupt >
00065             class SimulateInterruptViaThreadAdapter : public Base, public InterruptProvider {
00066                 public:
00067                     typedef bool    asio_tag;
00069                     void init() {
00070                         famouso::util::impl::start_ios();
00071                         Base::init();
00072                         sim = new boost::thread(
00073                             boost::bind(&SimulateInterruptViaThreadAdapter::simulatedInterruptViaThread,
00074                                         this));
00075                     }
00076 
00077                 private:
00078 
00083                     void simulatedInterruptViaThread() {
00084                         typename Base::MOB mob;
00085                         while (1) {
00086                             if (Base::interrupt_condition ()) {
00087                                 /* Post the interrupt service routine to the
00088                                  * ios-instance. This avoids inconsistencies
00089                                  * in the data-structures of the EventLayer,
00090                                  * because no threads are working at the same
00091                                  * time on the EventLayer data-structures.
00092                                  */
00093                                 famouso::util::ios::instance().post(
00094                                     boost::bind(&InterruptProvider::fire_Interrupt, this));
00095                             } else {
00096                                 // sleep a short while
00097                             }
00098                         }
00099                     }
00101                     boost::thread *sim;
00102             };
00103 
00104         } /* namespace CAN */
00105     } /* namespace nic */
00106 } /* namespace device */
00107 
00108 #endif
00109