svm_fifo.c File Reference

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Functions
static u8	position_lt (svm_fifo_t *f, u32 a, u32 b)
static u8	position_leq (svm_fifo_t *f, u32 a, u32 b)
static u8	position_gt (svm_fifo_t *f, u32 a, u32 b)
static u32	position_diff (svm_fifo_t *f, u32 posa, u32 posb)
static u32	ooo_segment_end_pos (svm_fifo_t *f, ooo_segment_t *s)
u8 *	format_ooo_segment (u8 *s, va_list *args)
u8 *	svm_fifo_dump_trace (u8 *s, svm_fifo_t *f)
u8 *	svm_fifo_replay (u8 *s, svm_fifo_t *f, u8 no_read, u8 verbose)
u8 *	format_ooo_list (u8 *s, va_list *args)
u8 *	format_svm_fifo (u8 *s, va_list *args)
svm_fifo_t *	svm_fifo_create (u32 data_size_in_bytes)
	create an svm fifo, in the current heap. More...
void	svm_fifo_free (svm_fifo_t *f)
static ooo_segment_t *	ooo_segment_new (svm_fifo_t *f, u32 start, u32 length)
static void	ooo_segment_del (svm_fifo_t *f, u32 index)
static void	ooo_segment_add (svm_fifo_t *f, u32 offset, u32 length)
	Add segment to fifo's out-of-order segment list. More...
static int	ooo_segment_try_collect (svm_fifo_t *f, u32 n_bytes_enqueued)
	Removes segments that can now be enqueued because the fifo's tail has advanced. More...
	CLIB_MARCH_FN (svm_fifo_enqueue_nowait, int, svm_fifo_t *f, u32 max_bytes, const u8 *copy_from_here)
int	svm_fifo_enqueue_nowait (svm_fifo_t *f, u32 max_bytes, const u8 *copy_from_here)
	CLIB_MARCH_FN (svm_fifo_enqueue_with_offset, int, svm_fifo_t *f, u32 offset, u32 required_bytes, u8 *copy_from_here)
	Enqueue a future segment. More...
int	svm_fifo_enqueue_with_offset (svm_fifo_t *f, u32 offset, u32 required_bytes, u8 *copy_from_here)
void	svm_fifo_overwrite_head (svm_fifo_t *f, u8 *data, u32 len)
	CLIB_MARCH_FN (svm_fifo_dequeue_nowait, int, svm_fifo_t *f, u32 max_bytes, u8 *copy_here)
int	svm_fifo_dequeue_nowait (svm_fifo_t *f, u32 max_bytes, u8 *copy_here)
	CLIB_MARCH_FN (svm_fifo_peek, int, svm_fifo_t *f, u32 relative_offset, u32 max_bytes, u8 *copy_here)
int	svm_fifo_peek (svm_fifo_t *f, u32 relative_offset, u32 max_bytes, u8 *copy_here)
int	svm_fifo_dequeue_drop (svm_fifo_t *f, u32 max_bytes)
void	svm_fifo_dequeue_drop_all (svm_fifo_t *f)
int	svm_fifo_segments (svm_fifo_t *f, svm_fifo_segment_t *fs)
void	svm_fifo_segments_free (svm_fifo_t *f, svm_fifo_segment_t *fs)
u32	svm_fifo_number_ooo_segments (svm_fifo_t *f)
ooo_segment_t *	svm_fifo_first_ooo_segment (svm_fifo_t *f)
void	svm_fifo_init_pointers (svm_fifo_t *f, u32 pointer)
	Set fifo pointers to requested offset. More...
void	svm_fifo_add_subscriber (svm_fifo_t *f, u8 subscriber)
void	svm_fifo_del_subscriber (svm_fifo_t *f, u8 subscriber)

Function Documentation

CLIB_MARCH_FN() [1/4]

CLIB_MARCH_FN	(	svm_fifo_enqueue_nowait	,
		int	,
		svm_fifo_t *	f,
		u32	max_bytes,
		const u8 *	copy_from_here
	)

Definition at line 464 of file svm_fifo.c.

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CLIB_MARCH_FN() [2/4]

CLIB_MARCH_FN	(	svm_fifo_enqueue_with_offset	,
		int	,
		svm_fifo_t *	f,
		u32	offset,
		u32	required_bytes,
		u8 *	copy_from_here
	)

Enqueue a future segment.

Two choices: either copies the entire segment, or copies nothing Returns 0 of the entire segment was copied Returns -1 if none of the segment was copied due to lack of space

Definition at line 545 of file svm_fifo.c.

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CLIB_MARCH_FN() [3/4]

CLIB_MARCH_FN	(	svm_fifo_dequeue_nowait	,
		int	,
		svm_fifo_t *	f,
		u32	max_bytes,
		u8 *	copy_here
	)

Definition at line 622 of file svm_fifo.c.

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CLIB_MARCH_FN() [4/4]

CLIB_MARCH_FN	(	svm_fifo_peek	,
		int	,
		svm_fifo_t *	f,
		u32	relative_offset,
		u32	max_bytes,
		u8 *	copy_here
	)

Definition at line 685 of file svm_fifo.c.

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format_ooo_list()

u8* format_ooo_list	(	u8 *	s,
		va_list *	args
	)

Definition at line 152 of file svm_fifo.c.

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format_ooo_segment()

u8* format_ooo_segment	(	u8 *	s,
		va_list *	args
	)

Definition at line 56 of file svm_fifo.c.

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format_svm_fifo()

u8* format_svm_fifo	(	u8 *	s,
		va_list *	args
	)

Definition at line 171 of file svm_fifo.c.

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ooo_segment_add()

static void ooo_segment_add ( svm_fifo_t *  f, u32  offset, u32  length  )

static

Add segment to fifo's out-of-order segment list.

Takes care of merging adjacent segments and removing overlapping ones.

Definition at line 284 of file svm_fifo.c.

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ooo_segment_del()

static void ooo_segment_del ( svm_fifo_t *  f, u32  index  )

inlinestatic

Definition at line 255 of file svm_fifo.c.

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ooo_segment_end_pos()

static u32 ooo_segment_end_pos ( svm_fifo_t *  f, ooo_segment_t *  s  )

inlinestatic

Definition at line 48 of file svm_fifo.c.

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ooo_segment_new()

static ooo_segment_t* ooo_segment_new ( svm_fifo_t *  f, u32  start, u32  length  )

inlinestatic

Definition at line 240 of file svm_fifo.c.

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ooo_segment_try_collect()

static int ooo_segment_try_collect ( svm_fifo_t *  f, u32  n_bytes_enqueued  )

static

Removes segments that can now be enqueued because the fifo's tail has advanced.

Returns the number of bytes added to tail.

Definition at line 416 of file svm_fifo.c.

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position_diff()

static u32 position_diff ( svm_fifo_t *  f, u32  posa, u32  posb  )

inlinestatic

Definition at line 41 of file svm_fifo.c.

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position_gt()

static u8 position_gt ( svm_fifo_t *  f, u32  a, u32  b  )

inlinestatic

Definition at line 34 of file svm_fifo.c.

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position_leq()

static u8 position_leq ( svm_fifo_t *  f, u32  a, u32  b  )

inlinestatic

Definition at line 27 of file svm_fifo.c.

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position_lt()

static u8 position_lt ( svm_fifo_t *  f, u32  a, u32  b  )

inlinestatic

Definition at line 20 of file svm_fifo.c.

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svm_fifo_add_subscriber()

void svm_fifo_add_subscriber	(	svm_fifo_t *	f,
		u8	subscriber
	)

Definition at line 849 of file svm_fifo.c.

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svm_fifo_create()

svm_fifo_t* svm_fifo_create

(

u32

data_size_in_bytes

)

create an svm fifo, in the current heap.

Fails vs blow up the process

Definition at line 205 of file svm_fifo.c.

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svm_fifo_del_subscriber()

void svm_fifo_del_subscriber	(	svm_fifo_t *	f,
		u8	subscriber
	)

Definition at line 857 of file svm_fifo.c.

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svm_fifo_dequeue_drop()

int svm_fifo_dequeue_drop	(	svm_fifo_t *	f,
		u32	max_bytes
	)

Definition at line 734 of file svm_fifo.c.

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svm_fifo_dequeue_drop_all()

void svm_fifo_dequeue_drop_all

(

svm_fifo_t *

f

)

Definition at line 774 of file svm_fifo.c.

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svm_fifo_dequeue_nowait()

int svm_fifo_dequeue_nowait	(	svm_fifo_t *	f,
		u32	max_bytes,
		u8 *	copy_here
	)

Definition at line 678 of file svm_fifo.c.

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svm_fifo_dump_trace()

u8* svm_fifo_dump_trace	(	u8 *	s,
		svm_fifo_t *	f
	)

Definition at line 68 of file svm_fifo.c.

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svm_fifo_enqueue_nowait()

int svm_fifo_enqueue_nowait	(	svm_fifo_t *	f,
		u32	max_bytes,
		const u8 *	copy_from_here
	)

Definition at line 530 of file svm_fifo.c.

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svm_fifo_enqueue_with_offset()

int svm_fifo_enqueue_with_offset	(	svm_fifo_t *	f,
		u32	offset,
		u32	required_bytes,
		u8 *	copy_from_here
	)

Definition at line 598 of file svm_fifo.c.

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svm_fifo_first_ooo_segment()

ooo_segment_t* svm_fifo_first_ooo_segment

(

svm_fifo_t *

f

)

Definition at line 834 of file svm_fifo.c.

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svm_fifo_free()

void svm_fifo_free

(

svm_fifo_t *

f

)

Definition at line 227 of file svm_fifo.c.

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svm_fifo_init_pointers()

void svm_fifo_init_pointers	(	svm_fifo_t *	f,
		u32	pointer
	)

Set fifo pointers to requested offset.

Definition at line 843 of file svm_fifo.c.

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svm_fifo_number_ooo_segments()

u32 svm_fifo_number_ooo_segments

(

svm_fifo_t *

f

)

Definition at line 828 of file svm_fifo.c.

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svm_fifo_overwrite_head()

void svm_fifo_overwrite_head	(	svm_fifo_t *	f,
		u8 *	data,
		u32	len
	)

Definition at line 607 of file svm_fifo.c.

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svm_fifo_peek()

int svm_fifo_peek	(	svm_fifo_t *	f,
		u32	relative_offset,
		u32	max_bytes,
		u8 *	copy_here
	)

Definition at line 726 of file svm_fifo.c.

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svm_fifo_replay()

u8* svm_fifo_replay	(	u8 *	s,
		svm_fifo_t *	f,
		u8	no_read,
		u8	verbose
	)

Definition at line 92 of file svm_fifo.c.

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svm_fifo_segments()

int svm_fifo_segments	(	svm_fifo_t *	f,
		svm_fifo_segment_t *	fs
	)

Definition at line 781 of file svm_fifo.c.

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svm_fifo_segments_free()

void svm_fifo_segments_free	(	svm_fifo_t *	f,
		svm_fifo_segment_t *	fs
	)

Definition at line 809 of file svm_fifo.c.

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