bin/csh/proc.h

   1 /* $NetBSD: proc.h,v 1.11 2007/07/16 14:07:01 christos Exp $ */
   2
   3 /*-
   4  * Copyright (c) 1980, 1991, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. Neither the name of the University nor the names of its contributors
  16  *    may be used to endorse or promote products derived from this software
  17  *    without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  *
  31  *      @(#)proc.h      8.1 (Berkeley) 5/31/93
  32  */
  33
  34 #ifndef _PROC_H_
  35 #define _PROC_H_
  36
  37 /*
  38  * Structure for each process the shell knows about:
  39  *      allocated and filled by pcreate.
  40  *      flushed by pflush; freeing always happens at top level
  41  *          so the interrupt level has less to worry about.
  42  *      processes are related to "friends" when in a pipeline;
  43  *          p_friends links makes a circular list of such jobs
  44  */
  45 struct process {
  46     struct process *p_next;     /* next in global "proclist" */
  47     struct process *p_friends;  /* next in job list (or self) */
  48     struct directory *p_cwd;    /* cwd of the job (only in head) */
  49     short unsigned p_flags;     /* various job status flags */
  50     char p_reason;              /* reason for entering this state */
  51     int p_index;                /* shorthand job index */
  52     pid_t p_pid;
  53     pid_t p_jobid;              /* pid of job leader */
  54     /* if a job is stopped/background p_jobid gives its pgrp */
  55     struct timeval p_btime;     /* begin time */
  56     struct timeval p_etime;     /* end time */
  57     struct rusage p_rusage;
  58     Char *p_command;            /* first PMAXLEN chars of command */
  59 };
  60
  61 /* flag values for p_flags */
  62 #define PRUNNING        (1<<0)  /* running */
  63 #define PSTOPPED        (1<<1)  /* stopped */
  64 #define PNEXITED        (1<<2)  /* normally exited */
  65 #define PAEXITED        (1<<3)  /* abnormally exited */
  66 #define PSIGNALED       (1<<4)  /* terminated by a signal != SIGINT */
  67 #define PNOTIFY         (1<<5)  /* notify async when done */
  68 #define PTIME           (1<<6)  /* job times should be printed */
  69 #define PAWAITED        (1<<7)  /* top level is waiting for it */
  70 #define PFOREGND        (1<<8)  /* started in shells pgrp */
  71 #define PDUMPED         (1<<9)  /* process dumped core */
  72 #define PERR            (1<<10) /* diagnostic output also piped out */
  73 #define PPOU            (1<<11) /* piped output */
  74 #define PREPORTED       (1<<12) /* status has been reported */
  75 #define PINTERRUPTED    (1<<13) /* job stopped via interrupt signal */
  76 #define PPTIME          (1<<14) /* time individual process */
  77 #define PNEEDNOTE       (1<<15) /* notify as soon as practical */
  78
  79 #define PALLSTATES      (PRUNNING|PSTOPPED|PNEXITED|PAEXITED|PSIGNALED|PINTERRUPTED)
  80
  81 #define PMAXLEN         80
  82
  83 /* defines for arguments to pprint */
  84 #define NUMBER          01
  85 #define NAME            02
  86 #define REASON          04
  87 #define AMPERSAND       010
  88 #define FANCY           020
  89 #define SHELLDIR        040     /* print shell's dir if not the same */
  90 #define JOBDIR          0100    /* print job's dir if not the same */
  91 #define AREASON         0200
  92
  93 struct process proclist;        /* list head of all processes */
  94 int pnoprocesses;               /* pchild found nothing to wait for */
  95
  96 struct process *pholdjob;       /* one level stack of current jobs */
  97
  98 struct process *pcurrjob;       /* current job */
  99 struct process *pcurrent;       /* current job in table */
 100 struct process *pprevious;      /* previous job in table */
 101
 102 int pmaxindex;                  /* current maximum job index */
 103
 104 #endif /* !_PROC_H_ */