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author | David Robillard <d@drobilla.net> | 2007-07-24 19:26:47 +0000 |
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committer | David Robillard <d@drobilla.net> | 2007-07-24 19:26:47 +0000 |
commit | 3b4a308ff647def75e647ac8f97e1e48b57672c3 (patch) | |
tree | a33e3a5c78f2ee7f23e151f39fe17ab39b0b81c8 /raul/Semaphore.h | |
parent | fcb302e6248527b2f1fb655f4d0a64af18f5f059 (diff) | |
download | raul-3b4a308ff647def75e647ac8f97e1e48b57672c3.tar.gz raul-3b4a308ff647def75e647ac8f97e1e48b57672c3.tar.bz2 raul-3b4a308ff647def75e647ac8f97e1e48b57672c3.zip |
Consistently rename all C++ files .cpp/.hpp.
Fix (some) inclusion guard names to not clash with other libs.
git-svn-id: http://svn.drobilla.net/lad/raul@613 a436a847-0d15-0410-975c-d299462d15a1
Diffstat (limited to 'raul/Semaphore.h')
-rw-r--r-- | raul/Semaphore.h | 75 |
1 files changed, 0 insertions, 75 deletions
diff --git a/raul/Semaphore.h b/raul/Semaphore.h deleted file mode 100644 index 28bd93e..0000000 --- a/raul/Semaphore.h +++ /dev/null @@ -1,75 +0,0 @@ -/* This file is part of Raul. - * Copyright (C) 2007 Dave Robillard <http://drobilla.net> - * - * Raul 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. - * - * Raul 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_SEMAPHORE_H -#define RAUL_SEMAPHORE_H - -#include <semaphore.h> -#include <boost/utility.hpp> - -namespace Raul { - - -/** Trivial wrapper around POSIX semaphores (zero memory overhead). - * - * This was created to provide an alternative debuggable implementation of - * semaphores based on a cond/mutex pair because semaphore's appeared not to - * work in GDB. Turns out sem_wait can fail when run in GDB, and Debian - * really needs to update it's man pages. - * - * This class remains as a trivial (yet pretty) wrapper/abstraction. - * - * \ingroup raul - */ -class Semaphore : boost::noncopyable { -public: - inline Semaphore(unsigned int initial) { sem_init(&_sem, 0, initial); } - - inline ~Semaphore() { sem_destroy(&_sem); } - - inline void reset(unsigned int initial) - { sem_destroy(&_sem); sem_init(&_sem, 0, initial); } - - /** Increment (and signal any waiters). - * - * Realtime safe. - */ - inline void post() { sem_post(&_sem); } - - /** Wait until count is > 0, then decrement. - * - * Note that sem_wait always returns 0 in practise. It returns nonzero - * when run in GDB, so the while is necessary to allow debugging. - * - * Obviously not realtime safe. - */ - inline void wait() { while (sem_wait(&_sem) != 0) ; } - - /** Non-blocking version of wait(). - * - * Realtime safe? - */ - inline int try_wait() { return sem_trywait(&_sem); } - -private: - sem_t _sem; -}; - - -} // namespace Raul - -#endif // RAUL_SEMAPHORE_H |