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proc.h revision 1.1 
      1 /*-
      2  * Copyright (c) 1980, 1991 The Regents of the University of California.
      3  * All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  * 2. Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in the
     12  *    documentation and/or other materials provided with the distribution.
     13  * 3. All advertising materials mentioning features or use of this software
     14  *    must display the following acknowledgement:
     15  *	This product includes software developed by the University of
     16  *	California, Berkeley and its contributors.
     17  * 4. Neither the name of the University nor the names of its contributors
     18  *    may be used to endorse or promote products derived from this software
     19  *    without specific prior written permission.
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     31  * SUCH DAMAGE.
     32  *
     33  *	@(#)proc.h	5.6 (Berkeley) 6/25/91
     34  */
     35 
     36 /*
     37  * Structure for each process the shell knows about:
     38  *	allocated and filled by pcreate.
     39  *	flushed by pflush; freeing always happens at top level
     40  *	    so the interrupt level has less to worry about.
     41  *	processes are related to "friends" when in a pipeline;
     42  *	    p_friends links makes a circular list of such jobs
     43  */
     44 struct process {
     45     struct process *p_next;	/* next in global "proclist" */
     46     struct process *p_friends;	/* next in job list (or self) */
     47     struct directory *p_cwd;	/* cwd of the job (only in head) */
     48     short unsigned p_flags;	/* various job status flags */
     49     char    p_reason;		/* reason for entering this state */
     50     int     p_index;		/* shorthand job index */
     51     int     p_pid;
     52     int     p_jobid;		/* pid of job leader */
     53     /* if a job is stopped/background p_jobid gives its pgrp */
     54     struct timeval p_btime;	/* begin time */
     55     struct timeval p_etime;	/* end time */
     56     struct rusage p_rusage;
     57     Char   *p_command;		/* first PMAXLEN chars of command */
     58 };
     59 
     60 /* flag values for p_flags */
     61 #define	PRUNNING	(1<<0)	/* running */
     62 #define	PSTOPPED	(1<<1)	/* stopped */
     63 #define	PNEXITED	(1<<2)	/* normally exited */
     64 #define	PAEXITED	(1<<3)	/* abnormally exited */
     65 #define	PSIGNALED	(1<<4)	/* terminated by a signal != SIGINT */
     66 
     67 #define	PALLSTATES	(PRUNNING|PSTOPPED|PNEXITED|PAEXITED|PSIGNALED|PINTERRUPTED)
     68 #define	PNOTIFY		(1<<5)	/* notify async when done */
     69 #define	PTIME		(1<<6)	/* job times should be printed */
     70 #define	PAWAITED	(1<<7)	/* top level is waiting for it */
     71 #define	PFOREGND	(1<<8)	/* started in shells pgrp */
     72 #define	PDUMPED		(1<<9)	/* process dumped core */
     73 #define	PDIAG		(1<<10)	/* diagnostic output also piped out */
     74 #define	PPOU		(1<<11)	/* piped output */
     75 #define	PREPORTED	(1<<12)	/* status has been reported */
     76 #define	PINTERRUPTED	(1<<13)	/* job stopped via interrupt signal */
     77 #define	PPTIME		(1<<14)	/* time individual process */
     78 #define	PNEEDNOTE	(1<<15)	/* notify as soon as practical */
     79 
     80 #define	PMAXLEN		80
     81 
     82 /* defines for arguments to pprint */
     83 #define	NUMBER		01
     84 #define	NAME		02
     85 #define	REASON		04
     86 #define	AMPERSAND	010
     87 #define	FANCY		020
     88 #define	SHELLDIR	040	/* print shell's dir if not the same */
     89 #define	JOBDIR		0100	/* print job's dir if not the same */
     90 #define	AREASON		0200
     91 
     92 struct process proclist;	/* list head of all processes */
     93 bool    pnoprocesses;		/* pchild found nothing to wait for */
     94 
     95 struct process *pholdjob;	/* one level stack of current jobs */
     96 
     97 struct process *pcurrjob;	/* current job */
     98 struct process *pcurrent;	/* current job in table */
     99 struct process *pprevious;	/* previous job in table */
    100 
    101 int    pmaxindex;		/* current maximum job index */
    102