* Copyright (c) 1980, 1991 The Regents of the University of California.
* %sccs.include.redist.c%
* @(#)proc.h 5.4 (Berkeley) %G%
* Structure for each process the shell knows about:
* allocated and filled by pcreate.
* flushed by pflush; freeing always happens at top level
* so the interrupt level has less to worry about.
* processes are related to "friends" when in a pipeline;
* p_friends links makes a circular list of such jobs
struct process
*p_next
; /* next in global "proclist" */
struct process
*p_friends
; /* next in job list (or self) */
struct directory
*p_cwd
; /* cwd of the job (only in head) */
short unsigned p_flags
; /* various job status flags */
char p_reason
; /* reason for entering this state */
char p_index
; /* shorthand job index */
int p_jobid
; /* pid of job leader */
/* if a job is stopped/background p_jobid gives its pgrp */
struct timeval p_btime
; /* begin time */
struct timeval p_etime
; /* end time */
Char
*p_command
; /* first PMAXLEN chars of command */
/* flag values for p_flags */
#define PRUNNING (1<<0) /* running */
#define PSTOPPED (1<<1) /* stopped */
#define PNEXITED (1<<2) /* normally exited */
#define PAEXITED (1<<3) /* abnormally exited */
#define PSIGNALED (1<<4) /* terminated by a signal != SIGINT */
#define PALLSTATES (PRUNNING|PSTOPPED|PNEXITED|PAEXITED|PSIGNALED|PINTERRUPTED)
#define PNOTIFY (1<<5) /* notify async when done */
#define PTIME (1<<6) /* job times should be printed */
#define PAWAITED (1<<7) /* top level is waiting for it */
#define PFOREGND (1<<8) /* started in shells pgrp */
#define PDUMPED (1<<9) /* process dumped core */
#define PDIAG (1<<10) /* diagnostic output also piped out */
#define PPOU (1<<11) /* piped output */
#define PREPORTED (1<<12) /* status has been reported */
#define PINTERRUPTED (1<<13) /* job stopped via interrupt signal */
#define PPTIME (1<<14) /* time individual process */
#define PNEEDNOTE (1<<15) /* notify as soon as practical */
#define PNULL (struct process *)0
/* defines for arguments to pprint */
#define SHELLDIR 040 /* print shell's dir if not the same */
#define JOBDIR 0100 /* print job's dir if not the same */
struct process proclist
; /* list head of all processes */
bool pnoprocesses
; /* pchild found nothing to wait for */
struct process
*pholdjob
; /* one level stack of current jobs */
struct process
*pcurrjob
; /* current job */
struct process
*pcurrent
; /* current job in table */
struct process
*pprevious
; /* previous job in table */
short pmaxindex
; /* current maximum job index */