Adding upstream version 3.2.1.upstream/3.2.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 125 insertions, 0 deletions

diff --git a/contrib/ucw/lib.h b/contrib/ucw/lib.h
new file mode 100644
index 0000000..506f09b
--- /dev/null
+++ b/contrib/ucw/lib.h
@@ -0,0 +1,125 @@
+/*
+ *	The UCW Library -- Miscellaneous Functions
+ *
+ *	(c) 1997--2014 Martin Mares <mj@ucw.cz>
+ *	(c) 2005--2014 Tomas Valla <tom@ucw.cz>
+ *	(c) 2006 Robert Spalek <robert@ucw.cz>
+ *	(c) 2007 Pavel Charvat <pchar@ucw.cz>
+ *
+ *	This software may be freely distributed and used according to the terms
+ *	of the GNU Lesser General Public License.
+ */
+
+#ifndef _UCW_LIB_H
+#define _UCW_LIB_H
+
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stdlib.h>
+
+#ifdef CONFIG_UCW_CLEAN_ABI
+#define assert_failed ucw_assert_failed
+#define assert_failed_msg ucw_assert_failed_msg
+#define assert_failed_noinfo ucw_assert_failed_noinfo
+#define big_alloc ucw_big_alloc
+#define big_alloc_zero ucw_big_alloc_zero
+#define big_free ucw_big_free
+#define die ucw_die
+#define log_die_hook ucw_log_die_hook
+#define log_file ucw_log_file
+#define log_fork ucw_log_fork
+#define log_init ucw_log_init
+#define log_pid ucw_log_pid
+#define log_title ucw_log_title
+#define msg ucw_msg
+#define page_alloc ucw_page_alloc
+#define page_alloc_zero ucw_page_alloc_zero
+#define page_free ucw_page_free
+#define page_realloc ucw_page_realloc
+#define random_max ucw_random_max
+#define random_max_u64 ucw_random_max_u64
+#define random_u32 ucw_random_u32
+#define random_u64 ucw_random_u64
+#define vdie ucw_vdie
+#define vmsg ucw_vmsg
+#define xfree ucw_xfree
+#define xmalloc ucw_xmalloc
+#define xmalloc_zero ucw_xmalloc_zero
+#define xrealloc ucw_xrealloc
+#define xstrdup ucw_xstrdup
+#endif
+
+/*** === Macros for handling structures, offsets and alignment ***/
+
+#define CHECK_PTR_TYPE(x, type) ((x)-(type)(x) + (type)(x))		/** Check that a pointer @x is of type @type. Fail compilation if not. **/
+#define PTR_TO(s, i) &((s*)0)->i					/** Return OFFSETOF() in form of a pointer. **/
+#define OFFSETOF(s, i) ((uint)offsetof(s, i))				/** Offset of item @i from the start of structure @s **/
+#define SKIP_BACK(s, i, p) ((s *)((char *)p - OFFSETOF(s, i)))		/** Given a pointer @p to item @i of structure @s, return a pointer to the start of the struct. **/
+
+/** Align an integer @s to the nearest higher multiple of @a (which should be a power of two) **/
+#define ALIGN_TO(s, a) (((s)+a-1)&~(a-1))
+
+/** Align a pointer @p to the nearest higher multiple of @s. **/
+#define ALIGN_PTR(p, s) ((uintptr_t)(p) % (s) ? (typeof(p))((uintptr_t)(p) + (s) - (uintptr_t)(p) % (s)) : (p))
+
+#define UNALIGNED_PART(ptr, type) (((uintptr_t) (ptr)) % sizeof(type))
+
+/*** === Other utility macros ***/
+
+#define MIN(a,b) (((a)<(b))?(a):(b))			/** Minimum of two numbers **/
+#define MAX(a,b) (((a)>(b))?(a):(b))			/** Maximum of two numbers **/
+#define CLAMP(x,min,max) ({ typeof(x) _t=x; (_t < min) ? min : (_t > max) ? max : _t; })	/** Clip a number @x to interval [@min,@max] **/
+#define ABS(x) ((x) < 0 ? -(x) : (x))			/** Absolute value **/
+#define ARRAY_SIZE(a) (sizeof(a)/sizeof(*(a)))		/** The number of elements of an array **/
+#define STRINGIFY(x) #x					/** Convert macro parameter to a string **/
+#define STRINGIFY_EXPANDED(x) STRINGIFY(x)		/** Convert an expanded macro parameter to a string **/
+#define GLUE(x,y) x##y					/** Glue two tokens together **/
+#define GLUE_(x,y) x##_##y				/** Glue two tokens together, separating them by an underscore **/
+
+#define COMPARE(x,y) do { if ((x)<(y)) return -1; if ((x)>(y)) return 1; } while(0)		/** Numeric comparison function for qsort() **/
+#define REV_COMPARE(x,y) COMPARE(y,x)								/** Reverse numeric comparison **/
+#define COMPARE_LT(x,y) do { if ((x)<(y)) return 1; if ((x)>(y)) return 0; } while(0)
+#define COMPARE_GT(x,y) COMPARE_LT(y,x)
+
+#define	ROL(x, bits) (((x) << (bits)) | ((uint)(x) >> (sizeof(uint)*8 - (bits))))		/** Bitwise rotation of an unsigned int to the left **/
+#define	ROR(x, bits) (((uint)(x) >> (bits)) | ((x) << (sizeof(uint)*8 - (bits))))		/** Bitwise rotation of an unsigned int to the right **/
+
+/*** === Shortcuts for GCC Extensions ***/
+
+#ifdef __GNUC__
+
+#include "ccan/compiler/compiler.h"
+#define FORMAT_CHECK(x,y,z) __attribute__((format(x,y,z)))		/** Checking of printf-like format strings **/
+#define likely(x) __builtin_expect((x),1)				/** Use `if (likely(@x))` if @x is almost always true **/
+#define unlikely(x) __builtin_expect((x),0)				/** Use `if (unlikely(@x))` to hint that @x is almost always false **/
+
+#if __GNUC__ >= 4 || __GNUC__ == 3 && __GNUC_MINOR__ >= 3
+#define ALWAYS_INLINE inline __attribute__((always_inline))		/** Forcibly inline **/
+#define NO_INLINE __attribute__((noinline))				/** Forcibly uninline **/
+#else
+#define ALWAYS_INLINE inline
+#endif
+
+#if __GNUC__ >= 4
+#define LIKE_MALLOC __attribute__((malloc))				/** Function returns a "new" pointer **/
+#define SENTINEL_CHECK __attribute__((sentinel))			/** The last argument must be NULL **/
+#else
+#define LIKE_MALLOC
+#define SENTINEL_CHECK
+#endif
+
+#else
+#error This program requires the GNU C compiler.
+#endif
+
+/***
+ * [[logging]]
+ *
+ * === Basic logging functions (see <<log:,Logging>> and <ucw/log.h> for more)
+ ***/
+
+#define DBG(x, ...) do { } while(0)
+#define DBG_SPOT do { } while(0)
+#define ASSERT(x)
+
+#endif