From ec0744d2a0773d1aa858c9c1135f77baf25d5a21 Mon Sep 17 00:00:00 2001 From: David Robillard Date: Sat, 12 Jan 2013 04:15:34 +0000 Subject: Add missing file. Break up deeply nested code. git-svn-id: http://svn.drobilla.net/lad/trunk/machina@4930 a436a847-0d15-0410-975c-d299462d15a1 --- src/engine/Slave.hpp | 73 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 73 insertions(+) create mode 100644 src/engine/Slave.hpp (limited to 'src/engine/Slave.hpp') diff --git a/src/engine/Slave.hpp b/src/engine/Slave.hpp new file mode 100644 index 0000000..7a16c10 --- /dev/null +++ b/src/engine/Slave.hpp @@ -0,0 +1,73 @@ +/* This file is part of Machina. + * Copyright 2007-2012 David Robillard + * + * Machina 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 3 of the License, or + * (at your option) any later version. + * + * Machina 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 more details. + * + * You should have received a copy of the GNU General Public License + * along with Machina. If not, see . + */ + +#ifndef MACHINA_SLAVE_HPP +#define MACHINA_SLAVE_HPP + +#include "raul/Semaphore.hpp" +#include "raul/Thread.hpp" + +namespace Machina { + +/** 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. + */ +class Slave + : public Raul::Thread +{ +public: + Slave() : _whip(0) {} + ~Slave() { _exit_flag = true; _whip.post(); } + + virtual void join() { + _exit_flag = true; + _whip.post(); + Thread::join(); + } + + /** 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; + + Raul::Semaphore _whip; + +private: + inline void _run() { + while (true) { + _whip.wait(); + if (_exit_flag) { + break; + } + _whipped(); + } + } + +}; + +} // namespace Machina + +#endif // MACHINA_SLAVE_HPP -- cgit v1.2.1