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Define IBUFSIZ as 384. This goes with speeding up ttnread().

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OBUFSIZ should be increased to the same value as IBUFSIZE (both are
smaller than desirable because they have to fit on the stack), but
there are currently problems with magic buffer limits and watermarks.

Remove unused #define of TTMASK.

Undo bogus exportation of ttnread().
This commit is contained in:
Bruce Evans 1995-04-15 20:59:28 +00:00
parent 5d2cacaa26
commit f6c6c6428b
1 changed files with 8 additions and 3 deletions
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11
sys/sys/tty.h
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@ -36,7 +36,7 @@
* SUCH DAMAGE.
*
* @(#)tty.h 8.6 (Berkeley) 1/21/94
* $Id: tty.h,v 1.16 1995/04/01 11:58:27 ache Exp $
* $Id: tty.h,v 1.17 1995/04/11 17:53:14 ache Exp $
*/
#ifndef _SYS_TTY_H_
@ -110,8 +110,14 @@ struct tty {
#define TTIPRI 25 /* Sleep priority for tty reads. */
#define TTOPRI 26 /* Sleep priority for tty writes. */
#define TTMASK 15
/*
* User data unfortunately has to be copied through buffers on the way to
* and from clists. The buffers are on the stack so their sizes must be
* fairly small.
*/
#define IBUFSIZ 384 /* Should be >= max value of MIN. */
#define OBUFSIZ 100
#define TTYHOG 1024
#ifdef KERNEL
@ -216,7 +222,6 @@ int nullmodem __P((struct tty *tp, int flag));
int tputchar __P((int c, struct tty *tp));
int ttioctl __P((struct tty *tp, int com, void *data, int flag));
int ttread __P((struct tty *tp, struct uio *uio, int flag));
int ttnread __P((struct tty *));
void ttrstrt __P((void *tp));
int ttyselect __P((struct tty *tp, int rw, struct proc *p));
int ttselect __P((dev_t dev, int rw, struct proc *p));