Logo Search packages:      
Sourcecode: tcsh version File versions  Download package

sh.proc.h

/* $Header: /p/tcsh/cvsroot/tcsh/sh.proc.h,v 3.13 2009/06/19 16:35:33 christos 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. 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;        /* 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 */

/* 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 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 */

#endif /* _h_sh_proc */

Generated by  Doxygen 1.6.0   Back to index