Home | History | Annotate | Download | only in csh
      1 /*
      2  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
      3  * Use is subject to license terms.
      4  */
      5 
      6 /*	Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T	*/
      7 /*	  All Rights Reserved  	*/
      8 
      9 /*
     10  * Copyright (c) 1980 Regents of the University of California.
     11  * All rights reserved. The Berkeley Software License Agreement
     12  * specifies the terms and conditions for redistribution.
     13  */
     14 
     15 #pragma ident	"%Z%%M%	%I%	%E% SMI"
     16 
     17 /*
     18  * C shell - process structure declarations
     19  */
     20 
     21 /*
     22  * Structure for each process the shell knows about:
     23  *	allocated and filled by pcreate.
     24  *	flushed by pflush; freeing always happens at top level
     25  *	    so the interrupt level has less to worry about.
     26  *	processes are related to "friends" when in a pipeline;
     27  *	    p_friends links makes a circular list of such jobs
     28  */
     29 struct process	{
     30 	struct	process *p_next;	/* next in global "proclist" */
     31 	struct	process	*p_friends;	/* next in job list (or self) */
     32 	struct	directory *p_cwd;	/* cwd of the job (only in head) */
     33 	short	unsigned p_flags;	/* various job status flags */
     34  tchar p_reason;		/* reason for entering this state */
     35  tchar p_index;		/* shorthand job index */
     36 	int	p_pid;
     37 	int	p_jobid;		/* pid of job leader */
     38 	/* if a job is stopped/background p_jobid gives its pgrp */
     39 	struct	timeval p_btime;	/* begin time */
     40 	struct	timeval p_etime;	/* end time */
     41 	struct	rusage p_rusage;
     42  tchar *p_command;		/* first PMAXLEN chars of command */
     43 };
     44 
     45 /* added for status */
     46 #define	ABN_TERM	0200
     47 
     48 /* flag values for p_flags */
     49 #define	PRUNNING	(1<<0)		/* running */
     50 #define	PSTOPPED	(1<<1)		/* stopped */
     51 #define	PNEXITED	(1<<2)		/* normally exited */
     52 #define	PAEXITED	(1<<3)		/* abnormally exited */
     53 #define	PSIGNALED	(1<<4)		/* terminated by a signal != SIGINT */
     54 
     55 #define	PALLSTATES	(PRUNNING|PSTOPPED|PNEXITED|PAEXITED|PSIGNALED|PINTERRUPTED)
     56 #define	PNOTIFY		(1<<5)		/* notify async when done */
     57 #define	PTIME		(1<<6)		/* job times should be printed */
     58 #define	PAWAITED	(1<<7)		/* top level is waiting for it */
     59 #define	PFOREGND	(1<<8)		/* started in shells pgrp */
     60 #define	PDUMPED		(1<<9)		/* process dumped core */
     61 #define	PDIAG		(1<<10)		/* diagnostic output also piped out */
     62 #define	PPOU		(1<<11)		/* piped output */
     63 #define	PREPORTED	(1<<12)		/* status has been reported */
     64 #define	PINTERRUPTED	(1<<13)		/* job stopped via interrupt signal */
     65 #define	PPTIME		(1<<14)		/* time individual process */
     66 #define	PNEEDNOTE	(1<<15)		/* notify as soon as practical */
     67 
     68 #define	PNULL		(struct process *)0
     69 #define	PMAXLEN		80
     70 
     71 /* defines for arguments to pprint */
     72 #define	NUMBER		01
     73 #define	NAME		02
     74 #define	REASON		04
     75 #define	AMPERSAND	010
     76 #define	FANCY		020
     77 #define	SHELLDIR	040		/* print shell's dir if not the same */
     78 #define	JOBDIR		0100		/* print job's dir if not the same */
     79 #define	AREASON		0200
     80 
     81 struct	process	proclist;		/* list head of all processes */
     82 bool	pnoprocesses;			/* pchild found nothing to wait for */
     83 
     84 struct	process *pholdjob;		/* one level stack of current jobs */
     85 
     86 struct	process *pcurrjob;		/* current job */
     87 struct	process	*pcurrent;		/* current job in table */
     88 struct	process *pprevious;		/* previous job in table */
     89 
     90 short	pmaxindex;			/* current maximum job index */
     91