103 lines
2.9 KiB
C++
103 lines
2.9 KiB
C++
/*
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Copyright (C) 2001 Paul Davis
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Copyright (C) 2004-2008 Grame
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef __JackWaitThreadedDriver__
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#define __JackWaitThreadedDriver__
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#include "JackThreadedDriver.h"
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#include "JackTimedDriver.h"
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namespace Jack
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{
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/*!
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\brief Wrapper for a restartable threaded driver (e.g. JackNetDriver).
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The idea is to behave as the "dummy" driver, until the network connection is really started and processing starts.
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The Execute method will call the ProcessNull method from the base JackWaiterDriver, until the decorated driver Initialize method returns.
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A helper JackDriverStarter thread is used for that purpose.
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*/
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class SERVER_EXPORT JackWaitThreadedDriver : public JackThreadedDriver
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{
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private:
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struct JackDriverStarter : public JackRunnableInterface
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{
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JackDriver* fDriver;
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JackThread fThread;
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volatile bool fRunning;
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JackDriverStarter(JackDriver* driver)
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:fDriver(driver), fThread(this), fRunning(false)
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{}
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~JackDriverStarter()
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{
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fThread.Kill();
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}
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int Start()
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{
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fRunning = false;
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return fThread.Start();
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}
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// JackRunnableInterface interface
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bool Execute()
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{
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// Blocks until decorated driver is started (that is when it's Initialize method returns).
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if (fDriver->Initialize()) {
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fRunning = true;
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} else {
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jack_error("Initing net driver fails...");
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}
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return false;
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}
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};
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JackDriverStarter fStarter;
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public:
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JackWaitThreadedDriver(JackDriver* net_driver)
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: JackThreadedDriver(net_driver), fStarter(net_driver)
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{}
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virtual ~JackWaitThreadedDriver()
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{}
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// JackRunnableInterface interface
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bool Init();
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bool Execute();
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protected:
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virtual bool ExecuteReal(); /*!< Real work to be done when the decorated driver has finish initializing */
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};
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} // end of namespace
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#endif
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