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// $Id$
//
// branch hints
// Copyright (C) 2007 Tim Blechmann
//
// This program 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.
//
// This program 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 this program; see the file COPYING. If not, write to
// the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
// Boston, MA 02111-1307, USA.
// $Revision$
// $LastChangedRevision$
// $LastChangedDate$
// $LastChangedBy$
#ifndef __LOCKFREE_BRANCH_HINTS_HPP
#define __LOCKFREE_BRANCH_HINTS_HPP
namespace lockfree
{
/** \brief hint for the branch prediction */
inline bool likely(bool expr)
{
#ifdef __GNUC__
return __builtin_expect(expr, true);
#else
return expr;
#endif
}
/** \brief hint for the branch prediction */
inline bool unlikely(bool expr)
{
#ifdef __GNUC__
return __builtin_expect(expr, false);
#else
return expr;
#endif
}
} // namespace
#endif /* __LOCKFREE_BRANCH_HINTS_HPP */
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