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proc.h
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1990-11-09
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#ifndef _PROC_H
#define _PROC_H
#include <setjmp.h>
#ifndef _MBUF_H
#include "mbuf.h"
#endif
#ifndef _TIMER_H
#include "timer.h"
#endif
#define OUTBUFSIZE 512 /* Size to be malloc'ed for outbuf */
/* Kernel process control block */
#define PHASH 16 /* Number of wait table hash chains */
struct proc {
struct proc *prev; /* Process table pointers */
struct proc *next;
jmp_buf env; /* Process state */
char i_state; /* Process interrupt state */
unsigned short state;
#define READY 0
#define WAITING 1
#define SUSPEND 2
void *event; /* Wait event */
int16 *stack; /* Process stack */
unsigned stksize; /* Size of same */
char *name; /* Arbitrary user-assigned name */
int retval; /* Return value from next pwait() */
struct timer alarm; /* Alarm clock timer */
struct mbuf *outbuf; /* Terminal output buffer */
int input; /* standard input socket */
int output; /* standard output socket */
int iarg; /* Copy of iarg */
void *parg1; /* Copy of parg1 */
void *parg2; /* Copy of parg2 */
int freeargs; /* Free args on termination if set */
};
#define NULLPROC (struct proc *)0
extern struct proc *Waittab[]; /* Head of wait list */
extern struct proc *Rdytab; /* Head of ready list */
extern struct proc *Curproc; /* Currently running process */
extern struct proc *Susptab; /* Suspended processes */
extern int Stkchk; /* Stack checking flag */
/* In kernel.c: */
void alert __ARGS((struct proc *pp,int val));
void chname __ARGS((struct proc *pp,char *newname));
void killproc __ARGS((struct proc *pp));
void killself __ARGS((void));
struct proc *mainproc __ARGS((char *name));
struct proc *newproc __ARGS((char *name,unsigned int stksize,
void (*pc) __ARGS((int,void *,void *)),
int iarg,void *parg1,void *parg2,int freeargs));
int psignal __ARGS((void *event,int n));
int pwait __ARGS((void *event));
void resume __ARGS((struct proc *pp));
void suspend __ARGS((struct proc *pp));
/* In ksubr.c: */
void chkstk __ARGS((void));
void kinit __ARGS((void));
unsigned phash __ARGS((void *event));
void psetup __ARGS((struct proc *pp,int iarg,void *parg1,void *parg2,
void __ARGS(((*pc) __ARGS((int,void *,void *)) )) ));
#ifdef AMIGA
void init_psetup __ARGS((struct proc *pp));
#endif
/* Stack background fill value for high water mark checking */
#define STACKPAT 0x55aa
/* Value stashed in location 0 to detect null pointer dereferences */
#define NULLPAT 0xdead
#endif /* _PROC_H */