contrib/tcsh-6/sh.proc.h

   1 /*
   2  * sh.proc.h: Process data structures and variables
   3  */
   4 /*-
   5  * Copyright (c) 1980, 1991 The Regents of the University of California.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. Neither the name of the University nor the names of its contributors
  17  *    may be used to endorse or promote products derived from this software
  18  *    without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  */
  32 #ifndef _h_sh_proc
  33 #define _h_sh_proc
  34 /*
  35  * C shell - process structure declarations
  36  */
  37
  38 /*
  39  * Structure for each process the shell knows about:
  40  *      allocated and filled by pcreate.
  41  *      flushed by pflush; freeing always happens at top level
  42  *          so the interrupt level has less to worry about.
  43  *      processes are related to "friends" when in a pipeline;
  44  *          p_friends links makes a circular list of such jobs
  45  */
  46 struct process {
  47     struct process *p_next;     /* next in global "proclist" */
  48     struct process *p_friends;  /* next in job list (or self) */
  49     struct directory *p_cwd;    /* cwd of the job (only in head) */
  50     unsigned long p_flags;      /* various job status flags */
  51     unsigned char p_reason;     /* reason for entering this state */
  52     int     p_index;            /* shorthand job index */
  53     pid_t   p_parentid;         /* parent pid */
  54     pid_t   p_procid;
  55     pid_t   p_jobid;            /* pid of job leader */
  56     /* if a job is stopped/background p_jobid gives its pgrp */
  57 #ifdef BSDTIMES
  58     struct timeval p_btime;     /* begin time */
  59     struct timeval p_etime;     /* end time */
  60     struct sysrusage p_rusage;
  61 #else                           /* BSDTIMES */
  62 # ifdef _SEQUENT_
  63     timeval_t p_btime;          /* begin time */
  64     timeval_t p_etime;          /* end time */
  65     struct process_stats p_rusage;
  66 # else                          /* _SEQUENT_ */
  67 #  ifndef POSIX
  68     time_t  p_btime;            /* begin time */
  69     time_t  p_etime;            /* end time */
  70     time_t  p_utime;            /* user time */
  71     time_t  p_stime;            /* system time */
  72 #  else /* POSIX */
  73     clock_t p_btime;            /* begin time */
  74     clock_t p_etime;            /* end time */
  75     clock_t p_utime;            /* user time */
  76     clock_t p_stime;            /* system time */
  77 #  endif /* POSIX */
  78 # endif /* _SEQUENT_ */
  79 #endif /* BSDTIMES */
  80     Char   *p_command;          /* command */
  81 };
  82
  83 /* flag values for p_flags */
  84 #define PRUNNING        (1<<0)  /* running */
  85 #define PSTOPPED        (1<<1)  /* stopped */
  86 #define PNEXITED        (1<<2)  /* normally exited */
  87 #define PAEXITED        (1<<3)  /* abnormally exited */
  88 #define PSIGNALED       (1<<4)  /* terminated by a signal != SIGINT */
  89
  90 #define PALLSTATES      (PRUNNING|PSTOPPED|PNEXITED|PAEXITED| \
  91                          PSIGNALED|PINTERRUPTED)
  92 #define PNOTIFY         (1<<5)  /* notify async when done */
  93 #define PTIME           (1<<6)  /* job times should be printed */
  94 #define PAWAITED        (1<<7)  /* top level is waiting for it */
  95 #define PFOREGND        (1<<8)  /* started in shells pgrp */
  96 #define PDUMPED         (1<<9)  /* process dumped core */
  97 #define PDIAG           (1<<10) /* diagnostic output also piped out */
  98 #define PPOU            (1<<11) /* piped output */
  99 #define PREPORTED       (1<<12) /* status has been reported */
 100 #define PINTERRUPTED    (1<<13) /* job stopped via interrupt signal */
 101 #define PPTIME          (1<<14) /* time individual process */
 102 #define PNEEDNOTE       (1<<15) /* notify as soon as practical */
 103 #define PBACKQ          (1<<16) /* Process is `` evaluation */
 104 #define PHUP            (1<<17) /* Process is marked for SIGHUP on exit */
 105 #define PBRACE          (1<<18) /* Process is {} evaluation */
 106
 107 /* defines for arguments to pprint */
 108 #define NUMBER          0x001
 109 #define NAME            0x002
 110 #define REASON          0x004
 111 #define AMPERSAND       0x008
 112 #define FANCY           0x010
 113 #define SHELLDIR        0x020   /* print shell's dir if not the same */
 114 #define JOBDIR          0x040   /* print job's dir if not the same */
 115 #define AREASON         0x080
 116 #define JOBLIST         0x100
 117
 118 EXTERN struct process proclist IZERO_STRUCT;/* list head of all processes */
 119
 120 EXTERN struct process *pholdjob IZERO;  /* one level stack of current jobs */
 121
 122 EXTERN struct process *pcurrjob IZERO;  /* current job */
 123 EXTERN struct process *pcurrent IZERO;  /* current job in table */
 124 EXTERN struct process *pprevious IZERO; /* previous job in table */
 125
 126 EXTERN int   pmaxindex IZERO;           /* current maximum job index */
 127
 128 #endif /* _h_sh_proc */