tService.cxx
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上传日期:2013-07-25
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文件大小:7k
- /* ====================================================================
- * The Vovida Software License, Version 1.0
- *
- * Copyright (c) 2000 Vovida Networks, Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. The names "VOCAL", "Vovida Open Communication Application Library",
- * and "Vovida Open Communication Application Library (VOCAL)" must
- * not be used to endorse or promote products derived from this
- * software without prior written permission. For written
- * permission, please contact vocal@vovida.org.
- *
- * 4. Products derived from this software may not be called "VOCAL", nor
- * may "VOCAL" appear in their name, without prior written
- * permission of Vovida Networks, Inc.
- *
- * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE AND
- * NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL VOVIDA
- * NETWORKS, INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT DAMAGES
- * IN EXCESS OF $1,000, NOR FOR ANY INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
- * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
- * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
- * DAMAGE.
- *
- * ====================================================================
- *
- * This software consists of voluntary contributions made by Vovida
- * Networks, Inc. and many individuals on behalf of Vovida Networks,
- * Inc. For more information on Vovida Networks, Inc., please see
- * <http://www.vovida.org/>.
- *
- */
- static const char* const tService_cxx_Version =
- "$Id$";
- #include "Application.hxx"
- #include "Event.hxx"
- #include "ControlEvent.hxx"
- #include "PollFifo.hxx"
- #include "Thread.hxx"
- #include <iostream>
- using Vocal::Runnable;
- using Vocal::ReturnCode;
- using Vocal::SUCCESS;
- using Vocal::Threads::Thread;
- using Vocal::Services::ControlEvent;
- using Vocal::Services::Event;
- class Module : public Runnable
- {
- public:
- Module() {}
- ~Module() {}
- ReturnCode run();
- bool processMessages(int numberFdsActive);
- PollFifo< Sptr<Event> > & getFifo()
- {
- return ( fifo_ );
- }
- private:
-
- PollFifo< Sptr<Event> > fifo_;
- };
- class tService : public Application
- {
- public:
- tService() {}
- ~tService() {}
- ReturnCode run();
- ReturnCode init(int, char**, char **)
- {
- Thread::init();
- return ( SUCCESS );
- }
-
- void uninit()
- {
- Thread::uninit();
- }
- };
- ReturnCode
- Module::run()
- {
- const string fn("Module::run");
- ReturnCode rc = SUCCESS;
- bool done = false;
- while ( !done )
- {
- int numberFdsActive = 0;
- try
- {
- numberFdsActive = fifo_.block();
- cout << fn << ": after wait. number fds active = "
- << numberFdsActive << endl;
- }
- catch ( ... )
- {
- done = true;
- rc = -1;
- continue;
- }
- done = processMessages(numberFdsActive);
- }
- return ( rc );
- }
- bool
- Module::processMessages(int numberFdsActive)
- {
- const string fn("Module::processMessages");
- VLog log(fn);
- bool done = false;
-
- while ( fifo_.messageAvailable() )
- {
- try
- {
- Sptr<Event> event = fifo_.getNext();
- Sptr<ControlEvent> ctrlEvent;
- ctrlEvent.dynamicCast(event);
- if ( ctrlEvent != 0 )
- {
- cout << fn << ": msg = " << *ctrlEvent << endl;
- switch ( ctrlEvent->getType() )
- {
- case ControlEvent::SHUTDOWN:
- {
- cout << fn << ": Shutdown" << endl;
- done = true;
- break;
- }
- case ControlEvent::START:
- case ControlEvent::STOP:
- {
- ctrlEvent->setReturnCode(SUCCESS);
- FifoBase< Sptr<Event> > * fifo = ctrlEvent->getReplyFifo();
- if ( fifo )
- {
- cout << fn << ": Returning message." << endl;
-
- // Send the message back.
- //
- fifo->add(Sptr<Event>(ctrlEvent));
- }
- else
- {
- cout << fn << ": Huh? no return fifo." << endl;
- done = true;
- }
- break;
- }
- default:
- {
- cout << fn << ": Huh? bad type" << endl;
- done = true;
- }
- }
- }
- }
- catch ( ... )
- {
- done = true;
- }
- }
- if ( numberFdsActive )
- {
- fifo_.processProtocols(numberFdsActive);
- }
- return ( done );
- }
- Application * Application::create()
- {
- return ( new tService );
- }
- ReturnCode
- tService::run()
- {
- Module module;
- Thread moduleThread(module, "module");
- PollFifo< Sptr<Event> > poll;
-
- Sptr<ControlEvent> event = new ControlEvent(ControlEvent::START, poll);
-
- int id = event->getControlEventId();
-
- cout << "Sending start: " << *event << endl;
-
- module.getFifo().add(Sptr<Event>(event));
-
- bool done = false;
- int numberFdsActive;
-
- while ( !done )
- {
- numberFdsActive = poll.block();
-
- if ( poll.messageAvailable() )
- {
- Sptr<Event> newEvent = poll.getNext();
- Sptr<ControlEvent> ctrlEvent;
- ctrlEvent.dynamicCast(event);
- if ( ctrlEvent != 0
- && ctrlEvent->getControlEventId() == id
- )
- {
- cout << "Received start: " << *ctrlEvent << endl;
- done = true;
- }
- else
- {
- cout << "Received unknown event." << endl;
- }
- }
- if ( numberFdsActive )
- {
- poll.processProtocols(numberFdsActive);
- }
- }
- event = new ControlEvent(ControlEvent::STOP, poll);
-
- id = event->getControlEventId();
- module.getFifo().add(Sptr<Event>(event));
- done = false;
-
- while ( !done )
- {
- numberFdsActive = poll.block();
-
- if ( poll.messageAvailable() )
- {
- Sptr<Event> newEvent = poll.getNext();
- Sptr<ControlEvent> ctrlEvent;
- ctrlEvent.dynamicCast(event);
- if ( ctrlEvent != 0
- && ctrlEvent->getControlEventId() == id
- )
- {
- cout << "Received stop: " << *ctrlEvent << endl;
- done = true;
- continue;
- }
- else
- {
- cout << "Received unknown event." << endl;
- }
- }
- if ( numberFdsActive )
- {
- poll.processProtocols(numberFdsActive);
- }
- }
-
- event = new ControlEvent(
- ControlEvent::SHUTDOWN,
- poll);
-
- module.getFifo().add(Sptr<Event>(event));
- return ( moduleThread.join() );
- }
- int main(int argc, char ** argv, char ** arge)
- {
- return ( Application::main(argc, argv, arge) );
- }