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>

Include dependency graph for tty_outq.c:

Go to the source code of this file.

Data Structures
struct	ttyoutq_block

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

Functions
	__FBSDID ("$BSDSUniX$")
void	ttyoutq_flush (struct ttyoutq *to)
void	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

#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 61 of file tty_outq.c.

Referenced by ttyoutq_setsize().

#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 77 of file tty_outq.c.

Referenced by ttyoutq_read(), and ttyoutq_read_uio().

#define TTYOUTQ_REMOVE_HEAD

(

to

)

Value:

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

Definition at line 72 of file tty_outq.c.

Referenced by ttyoutq_free(), ttyoutq_read(), and ttyoutq_read_uio().

Function Documentation

__FBSDID

(

"$BSDSUniX$"

)

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

void ttyoutq_flush

(

struct ttyoutq *

to

)

Definition at line 85 of file tty_outq.c.

Referenced by tty_flush(), ttydisc_close(), and ttyoutq_free().

Here is the caller graph for this function:

void ttyoutq_free

(

struct ttyoutq *

to

)

Definition at line 119 of file tty_outq.c.

References ttyoutq_flush(), TTYOUTQ_REMOVE_HEAD, and ttyoutq_zone.

Referenced by ttydev_leave().

Here is the call graph for this function:

Here is the caller graph for this function:

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

Definition at line 135 of file tty_outq.c.

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

Referenced by ttydisc_getc().

Here is the caller graph for this function:

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

Definition at line 196 of file tty_outq.c.

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

Referenced by ttydisc_getc_uio().

Here is the call graph for this function:

Here is the caller graph for this function:

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

Definition at line 93 of file tty_outq.c.

References TTYOUTQ_INSERT_TAIL, and ttyoutq_zone.

Referenced by TAILQ_HEAD().

Here is the caller graph for this function:

static void ttyoutq_startup ( void *  dummy )

static

Definition at line 332 of file tty_outq.c.

References ttyoutq_zone.

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

Definition at line 272 of file tty_outq.c.

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

Referenced by ttydisc_write(), and ttyoutq_write_nofrag().

Here is the caller graph for this function:

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

Definition at line 317 of file tty_outq.c.

References ttyoutq_write().

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

Here is the call graph for this function:

Here is the caller graph for this function:

Variable Documentation

uma_zone_t ttyoutq_zone

static

Definition at line 59 of file tty_outq.c.

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