tty_outq.c File Reference

#include <sys/cdefs.h>
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/queue.h>
#include <sys/systm.h>
#include <sys/tty.h>
#include <sys/uio.h>
#include <vm/uma.h>

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Data Structures
struct	ttyoutq_block

Macros
#define	TTYOUTQ_INSERT_TAIL(to, tob)
#define	TTYOUTQ_REMOVE_HEAD(to)
#define	TTYOUTQ_RECYCLE(to, tob)

Functions
	__FBSDID ("$FreeBSD$")
void	ttyoutq_flush (struct ttyoutq *to)
int	ttyoutq_setsize (struct ttyoutq *to, struct tty *tp, size_t size)
void	ttyoutq_free (struct ttyoutq *to)
size_t	ttyoutq_read (struct ttyoutq *to, void *buf, size_t len)
int	ttyoutq_read_uio (struct ttyoutq *to, struct tty *tp, struct uio *uio)
size_t	ttyoutq_write (struct ttyoutq *to, const void *buf, size_t nbytes)
int	ttyoutq_write_nofrag (struct ttyoutq *to, const void *buf, size_t nbytes)
static void	ttyoutq_startup (void *dummy)
	SYSINIT (ttyoutq, SI_SUB_DRIVERS, SI_ORDER_FIRST, ttyoutq_startup, NULL)

Variables
static uma_zone_t	ttyoutq_zone

Macro Definition Documentation

TTYOUTQ_INSERT_TAIL

#define TTYOUTQ_INSERT_TAIL	(		to,
			tob
	)

Value:

        do {                            \
        if (to->to_end == 0) {                                          \
                tob->tob_next = to->to_firstblock;                      \
                to->to_firstblock = tob;                                \
        } else {                                                        \
                tob->tob_next = to->to_lastblock->tob_next;             \
                to->to_lastblock->tob_next = tob;                       \
        }                                                               \
        to->to_nblocks++;                                               \
} while (0)

Definition at line 63 of file tty_outq.c.

TTYOUTQ_RECYCLE

#define TTYOUTQ_RECYCLE	(		to,
			tob
	)

Value:

        do {                                    \
        if (to->to_quota <= to->to_nblocks)                             \
                uma_zfree(ttyoutq_zone, tob);                           \
	else								\
		TTYOUTQ_INSERT_TAIL(to, tob);                         \
} while (0)

Definition at line 79 of file tty_outq.c.

TTYOUTQ_REMOVE_HEAD

#define TTYOUTQ_REMOVE_HEAD

(

to

)

Value:

        do {                                    \
        to->to_firstblock = to->to_firstblock->tob_next;                \
        to->to_nblocks--;                                               \
} while (0)

Definition at line 74 of file tty_outq.c.

Function Documentation

__FBSDID()

__FBSDID

(

"$FreeBSD$"

)

SYSINIT()

SYSINIT	(	ttyoutq	,
		SI_SUB_DRIVERS	,
		SI_ORDER_FIRST	,
		ttyoutq_startup	,
		NULL
	)

ttyoutq_flush()

void ttyoutq_flush

(

struct ttyoutq *

to

)

Definition at line 87 of file tty_outq.c.

Referenced by tty_flush(), and ttyoutq_free().

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ttyoutq_free()

void ttyoutq_free

(

struct ttyoutq *

to

)

Definition at line 127 of file tty_outq.c.

References ttyoutq_flush(), TTYOUTQ_REMOVE_HEAD, and ttyoutq_zone.

Referenced by tty_dealloc(), and ttydev_leave().

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ttyoutq_read()

size_t ttyoutq_read	(	struct ttyoutq *	to,
		void *	buf,
		size_t	len
	)

Definition at line 143 of file tty_outq.c.

References buf, ttyoutq_block::tob_data, TTYOUTQ_RECYCLE, and TTYOUTQ_REMOVE_HEAD.

Referenced by ttydisc_getc().

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ttyoutq_read_uio()

int ttyoutq_read_uio	(	struct ttyoutq *	to,
		struct tty *	tp,
		struct uio *	uio
	)

Definition at line 204 of file tty_outq.c.

References ttyoutq_block::tob_data, TTYOUTQ_RECYCLE, TTYOUTQ_REMOVE_HEAD, and uiomove().

Referenced by ttydisc_getc_uio().

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ttyoutq_setsize()

int ttyoutq_setsize	(	struct ttyoutq *	to,
		struct tty *	tp,
		size_t	size
	)

Definition at line 95 of file tty_outq.c.

References TTYOUTQ_INSERT_TAIL, and ttyoutq_zone.

ttyoutq_startup()

static void ttyoutq_startup ( void *  dummy )

static

Definition at line 340 of file tty_outq.c.

References ttyoutq_zone.

ttyoutq_write()

size_t ttyoutq_write	(	struct ttyoutq *	to,
		const void *	buf,
		size_t	nbytes
	)

Definition at line 280 of file tty_outq.c.

References buf, nbytes, ttyoutq_block::tob_data, and ttyoutq_block::tob_next.

Referenced by ttydisc_write(), and ttyoutq_write_nofrag().

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ttyoutq_write_nofrag()

int ttyoutq_write_nofrag	(	struct ttyoutq *	to,
		const void *	buf,
		size_t	nbytes
	)

Definition at line 325 of file tty_outq.c.

References buf, nbytes, and ttyoutq_write().

Referenced by tty_hiwat_in_block(), tty_hiwat_in_unblock(), ttydisc_echo_force(), ttydisc_rint(), ttydisc_rubchar(), and ttydisc_write_oproc().

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Variable Documentation

ttyoutq_zone

uma_zone_t ttyoutq_zone

static

Definition at line 61 of file tty_outq.c.

Referenced by ttyoutq_free(), ttyoutq_setsize(), and ttyoutq_startup().