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Diffstat (limited to 'raul/AtomicPtr.h')
-rw-r--r-- | raul/AtomicPtr.h | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/raul/AtomicPtr.h b/raul/AtomicPtr.h new file mode 100644 index 0000000..8209ca6 --- /dev/null +++ b/raul/AtomicPtr.h @@ -0,0 +1,43 @@ +/* This file is part of Ingen. Copyright (C) 2007 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_ATOMIC_PTR_H +#define RAUL_ATOMIC_PTR_H + +#include <glib.h> + +template<typename T> +class AtomicPtr { +public: + + inline AtomicPtr(const AtomicPtr& copy) + { g_atomic_pointer_set(&_val, copy.get()); } + + inline T* get() const + { return (T*)g_atomic_pointer_get(&_val); } + + inline void operator=(T* val) + { g_atomic_pointer_set(&_val, val); } + + /** Set value to newval iff current value is oldval */ + inline bool compare_and_exchange(int oldval, int newval) + { return g_atomic_pointer_compare_and_exchange(&_val, oldval, newval); } + +private: + volatile T* _val; +}; + +#endif // RAUL_ATOMIC_PTR_H |