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authorTavian Barnes <tavianator@gmail.com>2011-01-29 19:14:45 -0500
committerTavian Barnes <tavianator@gmail.com>2011-01-29 19:14:45 -0500
commit9400fce82dcf773c9862006a41681a73b22cbd87 (patch)
tree8193cc766c169c15cf1e74145ea2432ac70286cd /libdimension/compiler.h
parent4f0c30aee2c56967895c981534414d1b04e9e0ce (diff)
downloaddimension-9400fce82dcf773c9862006a41681a73b22cbd87.tar.xz
Add dmnsn_[un]likely() macros and a profiling framework.
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+/*************************************************************************
+ * Copyright (C) 2010 Tavian Barnes <tavianator@gmail.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
+ * Compiler abstractions.
+ */
+
+#ifndef DIMENSION_IMPL_COMPILER_H
+#define DIMENSION_IMPL_COMPILER_H
+
+#include <stdbool.h>
+
+#if 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 defined(__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
+
+#endif /* DIMENSION_IMPL_COMPILER_H */