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author | David Robillard <d@drobilla.net> | 2010-01-07 01:34:42 +0000 |
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committer | David Robillard <d@drobilla.net> | 2010-01-07 01:34:42 +0000 |
commit | 10a5b76a65fb7ca7bf8c1f5869aaf763854e05a3 (patch) | |
tree | f93824399e791f218545109304500fe71686f0a3 /src/engine/QueuedEventSource.hpp | |
parent | a6045e5dc58f2dd2ab9e3d3d19fd3eaf6d84216f (diff) | |
download | ingen-10a5b76a65fb7ca7bf8c1f5869aaf763854e05a3.tar.gz ingen-10a5b76a65fb7ca7bf8c1f5869aaf763854e05a3.tar.bz2 ingen-10a5b76a65fb7ca7bf8c1f5869aaf763854e05a3.zip |
Merge QueuedEventSource and EventSource.
git-svn-id: http://svn.drobilla.net/lad/trunk/ingen@2352 a436a847-0d15-0410-975c-d299462d15a1
Diffstat (limited to 'src/engine/QueuedEventSource.hpp')
-rw-r--r-- | src/engine/QueuedEventSource.hpp | 78 |
1 files changed, 0 insertions, 78 deletions
diff --git a/src/engine/QueuedEventSource.hpp b/src/engine/QueuedEventSource.hpp deleted file mode 100644 index 12b2300c..00000000 --- a/src/engine/QueuedEventSource.hpp +++ /dev/null @@ -1,78 +0,0 @@ -/* This file is part of Ingen. - * Copyright (C) 2008-2009 Dave Robillard <http://drobilla.net> - * - * 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 INGEN_QUEUED_EVENT_SOURCE_HPP -#define INGEN_QUEUED_EVENT_SOURCE_HPP - -#include <cstdlib> -#include <pthread.h> -#include "raul/Semaphore.hpp" -#include "raul/Slave.hpp" -#include "raul/List.hpp" -#include "EventSource.hpp" - -namespace Ingen { - -class Event; -class QueuedEvent; -class PostProcessor; - - -/** Queue of events that need processing before reaching the audio thread. - * - * Implemented as a deque (ringbuffer) in a circular array. Pushing and - * popping are threadsafe, as long as a single thread pushes and a single - * thread pops (ie this data structure is threadsafe, but the push and pop - * methods themselves are not). Creating an instance of this class spawns - * a pre-processing thread to prepare queued events. - * - * This class is it's own slave. :) - */ -class QueuedEventSource : public EventSource, protected Raul::Slave -{ -public: - QueuedEventSource(size_t queue_size); - ~QueuedEventSource(); - - void activate_source() { Slave::start(); } - void deactivate_source() { Slave::stop(); } - - void process(PostProcessor& dest, ProcessContext& context); - - /** Signal that the blocking event is finished. - * When this is called preparing will resume. This MUST be called by - * blocking events in their post_process() method. */ - inline void unblock() { _blocking_semaphore.post(); } - -protected: - void push_queued(QueuedEvent* const ev); - - inline bool unprepared_events() { return (_prepared_back.get() != NULL); } - - virtual void _whipped(); ///< Prepare 1 event - -private: - Raul::List<Event*> _events; - Raul::AtomicPtr<Raul::List<Event*>::Node> _prepared_back; - Raul::Semaphore _blocking_semaphore; -}; - - -} // namespace Ingen - -#endif // INGEN_QUEUED_EVENT_SOURCE_HPP - |