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authormarha <marha@users.sourceforge.net>2015-03-22 14:10:47 +0100
committermarha <marha@users.sourceforge.net>2015-03-22 14:10:47 +0100
commit3bc24b271f45f9f33484b8cf53b44f33f7e8a237 (patch)
tree193651a94adb3804e800747e993d07b92688e4d4 /xorg-server/glx/util
parentc646056120fe14e4c4ccf81bac5d78d61225a8e8 (diff)
parent82c8df11062f72a7d467e26cedbbd8b322ff7a70 (diff)
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Merge remote-tracking branch 'origin/released'
Conflicts: mesalib/src/mapi/glapi/glapi.h mesalib/src/mapi/glapi/glapi_nop.c mesalib/src/mesa/main/bufferobj.c
Diffstat (limited to 'xorg-server/glx/util')
-rw-r--r--xorg-server/glx/util/macros.h186
1 files changed, 186 insertions, 0 deletions
diff --git a/xorg-server/glx/util/macros.h b/xorg-server/glx/util/macros.h
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--- /dev/null
+++ b/xorg-server/glx/util/macros.h
@@ -0,0 +1,186 @@
+/*
+ * Copyright © 2014 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#ifndef UTIL_MACROS_H
+#define UTIL_MACROS_H
+
+/* Compute the size of an array */
+#ifndef ARRAY_SIZE
+# define ARRAY_SIZE(x) (sizeof(x) / sizeof(*(x)))
+#endif
+
+/* For compatibility with Clang's __has_builtin() */
+#ifndef __has_builtin
+# define __has_builtin(x) 0
+#endif
+
+/**
+ * __builtin_expect macros
+ */
+#if !defined(HAVE___BUILTIN_EXPECT)
+# define __builtin_expect(x, y) (x)
+#endif
+
+#ifndef likely
+# ifdef HAVE___BUILTIN_EXPECT
+# define likely(x) __builtin_expect(!!(x), 1)
+# define unlikely(x) __builtin_expect(!!(x), 0)
+# else
+# define likely(x) (x)
+# define unlikely(x) (x)
+# endif
+#endif
+
+
+/**
+ * Static (compile-time) assertion.
+ * Basically, use COND to dimension an array. If COND is false/zero the
+ * array size will be -1 and we'll get a compilation error.
+ */
+#define STATIC_ASSERT(COND) \
+ do { \
+ (void) sizeof(char [1 - 2*!(COND)]); \
+ } while (0)
+
+
+/**
+ * Unreachable macro. Useful for suppressing "control reaches end of non-void
+ * function" warnings.
+ */
+#ifdef HAVE___BUILTIN_UNREACHABLE
+#define unreachable(str) \
+do { \
+ assert(!str); \
+ __builtin_unreachable(); \
+} while (0)
+#elif defined (_MSC_VER)
+#define unreachable(str) \
+do { \
+ assert(!str); \
+ __assume(0); \
+} while (0)
+#else
+#define unreachable(str) assert(!str)
+#endif
+
+/**
+ * Assume macro. Useful for expressing our assumptions to the compiler,
+ * typically for purposes of silencing warnings.
+ */
+#if __has_builtin(__builtin_assume)
+#define assume(expr) \
+do { \
+ assert(expr); \
+ __builtin_assume(expr); \
+} while (0)
+#elif defined HAVE___BUILTIN_UNREACHABLE
+#define assume(expr) ((expr) ? ((void) 0) \
+ : (assert(!"assumption failed"), \
+ __builtin_unreachable()))
+#elif defined (_MSC_VER)
+#define assume(expr) __assume(expr)
+#else
+#define assume(expr) assert(expr)
+#endif
+
+#ifdef HAVE_FUNC_ATTRIBUTE_FLATTEN
+#define FLATTEN __attribute__((__flatten__))
+#else
+#define FLATTEN
+#endif
+
+#ifdef HAVE_FUNC_ATTRIBUTE_FORMAT
+#define PRINTFLIKE(f, a) __attribute__ ((format(__printf__, f, a)))
+#else
+#define PRINTFLIKE(f, a)
+#endif
+
+#ifdef HAVE_FUNC_ATTRIBUTE_MALLOC
+#define MALLOCLIKE __attribute__((__malloc__))
+#else
+#define MALLOCLIKE
+#endif
+
+/* Used to optionally mark structures with misaligned elements or size as
+ * packed, to trade off performance for space.
+ */
+#ifdef HAVE_FUNC_ATTRIBUTE_PACKED
+#define PACKED __attribute__((__packed__))
+#else
+#define PACKED
+#endif
+
+#ifdef __cplusplus
+/**
+ * Macro function that evaluates to true if T is a trivially
+ * destructible type -- that is, if its (non-virtual) destructor
+ * performs no action and all member variables and base classes are
+ * trivially destructible themselves.
+ */
+# if defined(__GNUC__)
+# if ((__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 3)))
+# define HAS_TRIVIAL_DESTRUCTOR(T) __has_trivial_destructor(T)
+# endif
+# elif (defined(__clang__) && defined(__has_feature))
+# if __has_feature(has_trivial_destructor)
+# define HAS_TRIVIAL_DESTRUCTOR(T) __has_trivial_destructor(T)
+# endif
+# endif
+# ifndef HAS_TRIVIAL_DESTRUCTOR
+ /* It's always safe (if inefficient) to assume that a
+ * destructor is non-trivial.
+ */
+# define HAS_TRIVIAL_DESTRUCTOR(T) (false)
+# endif
+#endif
+
+/**
+ * PUBLIC/USED macros
+ *
+ * If we build the library with gcc's -fvisibility=hidden flag, we'll
+ * use the PUBLIC macro to mark functions that are to be exported.
+ *
+ * We also need to define a USED attribute, so the optimizer doesn't
+ * inline a static function that we later use in an alias. - ajax
+ */
+#ifndef PUBLIC
+# if defined(__GNUC__) || (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x590))
+# define PUBLIC __attribute__((visibility("default")))
+# define USED __attribute__((used))
+# elif defined(_MSC_VER)
+# define PUBLIC __declspec(dllexport)
+# define USED
+# else
+# define PUBLIC
+# define USED
+# endif
+#endif
+
+#ifdef HAVE_FUNC_ATTRIBUTE_UNUSED
+#define UNUSED __attribute__((unused))
+#else
+#define UNUSED
+#endif
+
+
+#endif /* UTIL_MACROS_H */