clib.h File Reference

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Macros
#define	CLIB_UNIX
#define	NULL   ((void *) 0)
#define	BITS(x)   (8*sizeof(x))
#define	ARRAY_LEN(x)   (sizeof (x)/sizeof (x[0]))
#define	STRUCT_OFFSET_OF(t, f)   ((uword) & _STRUCT_FIELD (t, f))
#define	STRUCT_BIT_OFFSET_OF(t, f)   (BITS(u8) * (uword) & _STRUCT_FIELD (t, f))
#define	STRUCT_SIZE_OF(t, f)   (sizeof (_STRUCT_FIELD (t, f)))
#define	STRUCT_BITS_OF(t, f)   (BITS (_STRUCT_FIELD (t, f)))
#define	STRUCT_ARRAY_LEN(t, f)   ARRAY_LEN (_STRUCT_FIELD (t, f))
#define	STRUCT_MARK(mark)   u8 mark[0]
#define	STRUCT_MARK_PTR(v, f)   &(v)->f
#define	STRUCT_STRIDE_OF(t, f)
#define	STRUCT_OFFSET_OF_VAR(v, f)   ((uword) (&(v)->f) - (uword) (v))
#define	CLIB_PACKED(x)   x __attribute__ ((packed))
#define	CLIB_UNUSED(x)   x __attribute__ ((unused))
#define	CLIB_STRING_MACRO(x)   #x
#define	never_inline   __attribute__ ((__noinline__))
#define	always_inline   static inline
#define	static_always_inline   static inline
#define	u8   pad_from[(to) - (from)] u8 pad_##from[(to) - (from)]
	Padding. More...
#define	PREDICT_FALSE(x)   __builtin_expect((x),0)
#define	PREDICT_TRUE(x)   __builtin_expect((x),1)
#define	CLIB_MEMORY_BARRIER()   __sync_synchronize ()
#define	CLIB_MEMORY_STORE_BARRIER()   __builtin_ia32_sfence ()
#define	INIT_FUNCTION(decl)
#define	EXIT_FUNCTION(decl)
#define	count_leading_zeros(x)   __builtin_clzl (x)
#define	count_trailing_zeros(x)   __builtin_ctzl (x)
#define	clib_max(x, y)
#define	clib_min(x, y)
#define	clib_abs(x)

Functions
static uword	min_log2 (uword x)
static uword	max_log2 (uword x)
static u64	min_log2_u64 (u64 x)
static uword	pow2_mask (uword x)
static uword	max_pow2 (uword x)
static uword	is_pow2 (uword x)
static uword	round_pow2 (uword x, uword pow2)
static u64	round_pow2_u64 (u64 x, u64 pow2)
static uword	first_set (uword x)
static uword	log2_first_set (uword x)
static f64	flt_round_down (f64 x)
static word	flt_round_nearest (f64 x)
static f64	flt_round_to_multiple (f64 x, f64 f)
uword	clib_backtrace (uword *callers, uword max_callers, uword n_frames_to_skip)

Macro Definition Documentation

#define always_inline   static inline

Definition at line 92 of file clib.h.

#define ARRAY_LEN

(

x

)

(sizeof (x)/sizeof (x[0]))

Definition at line 59 of file clib.h.

#define BITS

(

x

)

(8*sizeof(x))

Definition at line 58 of file clib.h.

#define clib_abs

(

x

)

Value:

({                                              \
  __typeof__ (x) _x = (x);                      \
  _x < 0 ? -_x : _x;                            \
})

Definition at line 296 of file clib.h.

#define clib_max	(		x,
			y
	)

Value:

({                                              \
  __typeof__ (x) _x = (x);                      \
  __typeof__ (y) _y = (y);                      \
  _x > _y ? _x : _y;                            \
})

Definition at line 282 of file clib.h.

#define CLIB_MEMORY_BARRIER

(

)

__sync_synchronize ()

Definition at line 109 of file clib.h.

#define CLIB_MEMORY_STORE_BARRIER

(

)

__builtin_ia32_sfence ()

Definition at line 112 of file clib.h.

#define clib_min	(		x,
			y
	)

Value:

({                                              \
  __typeof__ (x) _x = (x);                      \
  __typeof__ (y) _y = (y);                      \
  _x < _y ? _x : _y;                            \
})

Definition at line 289 of file clib.h.

#define CLIB_PACKED

(

x

)

x __attribute__ ((packed))

Definition at line 78 of file clib.h.

#define CLIB_STRING_MACRO

(

x

)

#x

Definition at line 82 of file clib.h.

#define CLIB_UNIX

Definition at line 43 of file clib.h.

#define CLIB_UNUSED

(

x

)

x __attribute__ ((unused))

Definition at line 79 of file clib.h.

#define count_leading_zeros

(

x

)

__builtin_clzl (x)

Definition at line 132 of file clib.h.

#define count_trailing_zeros

(

x

)

__builtin_ctzl (x)

Definition at line 133 of file clib.h.

#define EXIT_FUNCTION

(

decl

)

Value:

decl __attribute ((destructor));                \
  decl

Definition at line 123 of file clib.h.

#define INIT_FUNCTION

(

decl

)

Value:

decl __attribute ((constructor));               \
  decl

Definition at line 118 of file clib.h.

#define never_inline   __attribute__ ((__noinline__))

Definition at line 89 of file clib.h.

#define NULL   ((void *) 0)

Definition at line 55 of file clib.h.

#define PREDICT_FALSE

(

x

)

__builtin_expect((x),0)

Definition at line 105 of file clib.h.

#define PREDICT_TRUE

(

x

)

__builtin_expect((x),1)

Definition at line 106 of file clib.h.

#define static_always_inline   static inline

Definition at line 93 of file clib.h.

#define STRUCT_ARRAY_LEN	(		t,
			f
	)		ARRAY_LEN (_STRUCT_FIELD (t, f))

Definition at line 66 of file clib.h.

#define STRUCT_BIT_OFFSET_OF	(		t,
			f
	)		(BITS(u8) * (uword) & _STRUCT_FIELD (t, f))

Definition at line 63 of file clib.h.

#define STRUCT_BITS_OF	(		t,
			f
	)		(BITS (_STRUCT_FIELD (t, f)))

Definition at line 65 of file clib.h.

#define STRUCT_MARK

(

mark

)

u8 mark[0]

Definition at line 67 of file clib.h.

#define STRUCT_MARK_PTR	(		v,
			f
	)		&(v)->f

Definition at line 68 of file clib.h.

#define STRUCT_OFFSET_OF	(		t,
			f
	)		((uword) & _STRUCT_FIELD (t, f))

Definition at line 62 of file clib.h.

#define STRUCT_OFFSET_OF_VAR	(		v,
			f
	)		((uword) (&(v)->f) - (uword) (v))

Definition at line 75 of file clib.h.

#define STRUCT_SIZE_OF	(		t,
			f
	)		(sizeof (_STRUCT_FIELD (t, f)))

Definition at line 64 of file clib.h.

#define STRUCT_STRIDE_OF	(		t,
			f
	)

Value:

(  ((uword) & (((t *) 0)[1].f))         \
   - ((uword) & (((t *) 0)[0].f)))

Definition at line 71 of file clib.h.

#define u8   pad_from[(to) - (from)] u8 pad_##from[(to) - (from)]

Padding.

Definition at line 102 of file clib.h.

Function Documentation

uword clib_backtrace	(	uword *	callers,
		uword	max_callers,
		uword	n_frames_to_skip
	)

Definition at line 226 of file backtrace.c.

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static uword first_set ( uword  x )

inlinestatic

Definition at line 247 of file clib.h.

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static f64 flt_round_down ( f64  x )

inlinestatic

Definition at line 265 of file clib.h.

static word flt_round_nearest ( f64  x )

inlinestatic

Definition at line 271 of file clib.h.

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static f64 flt_round_to_multiple ( f64  x, f64  f  )

inlinestatic

Definition at line 277 of file clib.h.

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static uword is_pow2 ( uword  x )

inlinestatic

Definition at line 229 of file clib.h.

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static uword log2_first_set ( uword  x )

inlinestatic

Definition at line 253 of file clib.h.

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static uword max_log2 ( uword  x )

inlinestatic

Definition at line 185 of file clib.h.

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static uword max_pow2 ( uword  x )

inlinestatic

Definition at line 220 of file clib.h.

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static uword min_log2 ( uword  x )

inlinestatic

Definition at line 138 of file clib.h.

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static u64 min_log2_u64 ( u64  x )

inlinestatic

Definition at line 194 of file clib.h.

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static uword pow2_mask ( uword  x )

inlinestatic

Definition at line 214 of file clib.h.

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static uword round_pow2 ( uword  x, uword  pow2  )

inlinestatic

Definition at line 235 of file clib.h.

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static u64 round_pow2_u64 ( u64  x, u64  pow2  )

inlinestatic

Definition at line 241 of file clib.h.

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