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/*************************************************************************
* Copyright (C) 2010-2011 Tavian Barnes <tavianator@tavianator.com> *
* *
* This file is part of The Dimension Library. *
* *
* The Dimension Library is free software; you can redistribute it and/ *
* or modify it under the terms of the GNU Lesser General Public License *
* as published by the Free Software Foundation; either version 3 of the *
* License, or (at your option) any later version. *
* *
* The Dimension Library 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 *
* Lesser General Public License for more details. *
* *
* You should have received a copy of the GNU Lesser General Public *
* License along with this program. If not, see *
* <http://www.gnu.org/licenses/>. *
*************************************************************************/
/**
* @file
* Built-in branch profiler.
*/
#ifndef DMNSN_INTERNAL_H
#error "Please include \"internal.h\" instead of this header directly."
#endif
#include <stdbool.h>
/**
* @def dmnsn_likely
* Indicate that a test is likely to succeed.
* @param test The test to perform.
* @return The truth value of \p test.
*/
/**
* @def dmnsn_unlikely
* Indicate that a test is unlikely to succeed.
* @param test The test to perform.
* @return The truth value of \p test.
*/
#ifdef DMNSN_PROFILE
#define dmnsn_likely(test) \
dmnsn_expect(!!(test), true, DMNSN_FUNC, __FILE__, __LINE__)
#define dmnsn_unlikely(test) \
dmnsn_expect(!!(test), false, DMNSN_FUNC, __FILE__, __LINE__)
#elif DMNSN_GNUC
#define dmnsn_likely(test) __builtin_expect(!!(test), true)
#define dmnsn_unlikely(test) __builtin_expect(!!(test), false)
#else
#define dmnsn_likely(test) (!!(test))
#define dmnsn_unlikely(test) (!!(test))
#endif
/**
* Record a test and its expected result. Called by dmnsn_[un]likely();
* don't call directly.
* @param[in] result The result of the test.
* @param[in] expected The expected result of the test.
* @param[in] func The name of the function the test occurs in.
* @param[in] file The name of the file the test occurs in.
* @param[in] line The line number on which the test occurs.
* @return \p result.
*/
DMNSN_INTERNAL bool dmnsn_expect(bool result, bool expected, const char *func,
const char *file, unsigned int line);
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