usr/src/cmd/csh/sh.proc.h

   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 */