Add a dmnsn_unreachable() macro.

Also rename inline.h to compiler.h.

1 files changed, 51 insertions, 0 deletions

diff --git a/libdimension/compiler-internal.h b/libdimension/compiler-internal.h
new file mode 100644
index 0000000..e59ece2
--- /dev/null
+++ b/libdimension/compiler-internal.h
@@ -0,0 +1,51 @@
+/*************************************************************************
+ * 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
+ * Internally-used compiler abstractions.
+ */
+
+#include <stdbool.h>
+
+#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 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
+
+#ifdef __GNUC__
+  #define DMNSN_HOT             __attribute__((hot))
+  #define DMNSN_INTERNAL        __attribute__((visibility("hidden")))
+  #define DMNSN_DESTRUCTOR      __attribute__((destructor(102)))
+  #define DMNSN_LATE_DESTRUCTOR __attribute__((destructor(101)))
+#else
+  #define DMNSN_HOT
+  #define DMNSN_INTERNAL
+  #define DMNSN_DESTRUCTOR
+  #define DMNSN_LATE_DESTRUCTOR
+#endif