source: trunk/third/tcsh/sh.proc.h @ 12039

/* $Header: /afs/dev.mit.edu/source/repository/third/tcsh/sh.proc.h,v 1.1.1.2 1998-10-03 21:10:07 danw Exp $ */
/*
 * sh.proc.h: Process data structures and variables
 */
/*-
 * Copyright (c) 1980, 1991 The Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by the University of
 *      California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */
#ifndef _h_sh_proc
#define _h_sh_proc
/*
 * C shell - process structure declarations
 */

/*
 * Structure for each process the shell knows about:
 *      allocated and filled by pcreate.
 *      flushed by pflush; freeing always happens at top level
 *          so the interrupt level has less to worry about.
 *      processes are related to "friends" when in a pipeline;
 *          p_friends links makes a circular list of such jobs
 */
struct process {
    struct process *p_next;     /* next in global "proclist" */
    struct process *p_friends;  /* next in job list (or self) */
    struct directory *p_cwd;    /* cwd of the job (only in head) */
    unsigned long p_flags;      /* various job status flags */
    unsigned char p_reason;     /* reason for entering this state */
    int     p_index;            /* shorthand job index */
    pid_t   p_procid;
    pid_t   p_jobid;            /* pid of job leader */
    /* if a job is stopped/background p_jobid gives its pgrp */
#ifdef BSDTIMES
    struct timeval p_btime;     /* begin time */
    struct timeval p_etime;     /* end time */
    struct sysrusage p_rusage;
#else                           /* BSDTIMES */
# ifdef _SEQUENT_
    timeval_t p_btime;          /* begin time */
    timeval_t p_etime;          /* end time */
    struct process_stats p_rusage;
# else                          /* _SEQUENT_ */
#  ifndef POSIX
    time_t  p_btime;            /* begin time */
    time_t  p_etime;            /* end time */
    time_t  p_utime;            /* user time */
    time_t  p_stime;            /* system time */
#  else /* POSIX */
    clock_t p_btime;            /* begin time */
    clock_t p_etime;            /* end time */
    clock_t p_utime;            /* user time */
    clock_t p_stime;            /* system time */
#  endif /* POSIX */
# endif /* _SEQUENT_ */
#endif /* BSDTIMES */
    Char   *p_command;          /* first PMAXLEN chars of command */
};

/* flag values for p_flags */
#define PRUNNING        (1<<0)  /* running */
#define PSTOPPED        (1<<1)  /* stopped */
#define PNEXITED        (1<<2)  /* normally exited */
#define PAEXITED        (1<<3)  /* abnormally exited */
#define PSIGNALED       (1<<4)  /* terminated by a signal != SIGINT */

#define PALLSTATES      (PRUNNING|PSTOPPED|PNEXITED|PAEXITED| \
                         PSIGNALED|PINTERRUPTED)
#define PNOTIFY         (1<<5)  /* notify async when done */
#define PTIME           (1<<6)  /* job times should be printed */
#define PAWAITED        (1<<7)  /* top level is waiting for it */
#define PFOREGND        (1<<8)  /* started in shells pgrp */
#define PDUMPED         (1<<9)  /* process dumped core */
#define PDIAG           (1<<10) /* diagnostic output also piped out */
#define PPOU            (1<<11) /* piped output */
#define PREPORTED       (1<<12) /* status has been reported */
#define PINTERRUPTED    (1<<13) /* job stopped via interrupt signal */
#define PPTIME          (1<<14) /* time individual process */
#define PNEEDNOTE       (1<<15) /* notify as soon as practical */
#define PBACKQ          (1<<16) /* Process is `` evaluation */
#define PHUP            (1<<17) /* Process is marked for SIGHUP on exit */

#define PMAXLEN         80

/* defines for arguments to pprint */
#define NUMBER          01
#define NAME            02
#define REASON          04
#define AMPERSAND       010
#define FANCY           020
#define SHELLDIR        040     /* print shell's dir if not the same */
#define JOBDIR          0100    /* print job's dir if not the same */
#define AREASON         0200

EXTERN struct process proclist IZERO_STRUCT;/* list head of all processes */
EXTERN bool    pnoprocesses IZERO;      /* pchild found nothing to wait for */

EXTERN struct process *pholdjob IZERO;  /* one level stack of current jobs */

EXTERN struct process *pcurrjob IZERO;  /* current job */
EXTERN struct process *pcurrent IZERO;  /* current job in table */
EXTERN struct process *pprevious IZERO; /* previous job in table */

EXTERN int   pmaxindex IZERO;           /* current maximum job index */

#ifndef BSDTIMES
EXTERN bool    timesdone;       /* shtimes buffer full ? */
#endif /* BSDTIMES */

#endif /* _h_sh_proc */