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Diffstat (limited to 'raul/Slave.h')
-rw-r--r-- | raul/Slave.h | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/raul/Slave.h b/raul/Slave.h new file mode 100644 index 0000000..c16818b --- /dev/null +++ b/raul/Slave.h @@ -0,0 +1,66 @@ +/* This file is part of Ingen. Copyright (C) 2006 Dave Robillard. + * + * Ingen is free software; you can redistribute it and/or modify it under the + * terms of the GNU General Public License as published by the Free Software + * Foundation; either version 2 of the License, or (at your option) any later + * version. + * + * Ingen is distributed in the hope that it will be useful, but WITHOUT ANY + * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS + * FOR A PARTICULAR PURPOSE. See the GNU General Public License for details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef RAUL_SLAVE_H +#define RAUL_SLAVE_H + +#include <pthread.h> +#include "raul/Semaphore.h" +#include "raul/Thread.h" + + +/** Thread driven by (realtime safe) signals. + * + * Use this to perform some task in a separate thread you want to 'drive' + * from a realtime (or otherwise) thread. + * + * \ingroup engine + */ +class Slave : public Thread +{ +public: + Slave() : _whip(0) {} + + /** Tell the slave to do whatever work it does. Realtime safe. */ + inline void whip() { _whip.post(); } + +protected: + /** Worker method. + * + * This is called once from this thread every time whip() is called. + * Implementations likely want to put a single (non loop) chunk of code + * here, e.g. to process an event. + */ + virtual void _whipped() = 0; + + Semaphore _whip; + +private: + // Prevent copies (undefined) + Slave(const Slave&); + Slave& operator=(const Slave&); + + inline void _run() + { + while (true) { + _whip.wait(); + _whipped(); + } + } +}; + + +#endif // RAUL_SLAVE_H |