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Annotation of 43BSDTahoe/bin/csh/sh.proc.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1980 Regents of the University of California.
        !             3:  * All rights reserved.  The Berkeley Software License Agreement
        !             4:  * specifies the terms and conditions for redistribution.
        !             5:  *
        !             6:  *     @(#)sh.proc.h   5.2 (Berkeley) 6/6/85
        !             7:  */
        !             8: 
        !             9: /*
        !            10:  * C shell - process structure declarations
        !            11:  */
        !            12: 
        !            13: /*
        !            14:  * Structure for each process the shell knows about:
        !            15:  *     allocated and filled by pcreate.
        !            16:  *     flushed by pflush; freeing always happens at top level
        !            17:  *         so the interrupt level has less to worry about.
        !            18:  *     processes are related to "friends" when in a pipeline;
        !            19:  *         p_friends links makes a circular list of such jobs
        !            20:  */
        !            21: struct process {
        !            22:        struct  process *p_next;        /* next in global "proclist" */
        !            23:        struct  process *p_friends;     /* next in job list (or self) */
        !            24:        struct  directory *p_cwd;       /* cwd of the job (only in head) */
        !            25:        short   unsigned p_flags;       /* various job status flags */
        !            26:        char    p_reason;               /* reason for entering this state */
        !            27:        char    p_index;                /* shorthand job index */
        !            28:        int     p_pid;
        !            29:        int     p_jobid;                /* pid of job leader */
        !            30:        /* if a job is stopped/background p_jobid gives its pgrp */
        !            31:        struct  timeval p_btime;        /* begin time */
        !            32:        struct  timeval p_etime;        /* end time */
        !            33:        struct  rusage p_rusage;
        !            34:        char    *p_command;             /* first PMAXLEN chars of command */
        !            35: };
        !            36: 
        !            37: /* flag values for p_flags */
        !            38: #define        PRUNNING        (1<<0)          /* running */
        !            39: #define        PSTOPPED        (1<<1)          /* stopped */
        !            40: #define        PNEXITED        (1<<2)          /* normally exited */
        !            41: #define        PAEXITED        (1<<3)          /* abnormally exited */
        !            42: #define        PSIGNALED       (1<<4)          /* terminated by a signal != SIGINT */
        !            43: 
        !            44: #define        PALLSTATES      (PRUNNING|PSTOPPED|PNEXITED|PAEXITED|PSIGNALED|PINTERRUPTED)
        !            45: #define        PNOTIFY         (1<<5)          /* notify async when done */
        !            46: #define        PTIME           (1<<6)          /* job times should be printed */
        !            47: #define        PAWAITED        (1<<7)          /* top level is waiting for it */
        !            48: #define        PFOREGND        (1<<8)          /* started in shells pgrp */
        !            49: #define        PDUMPED         (1<<9)          /* process dumped core */
        !            50: #define        PDIAG           (1<<10)         /* diagnostic output also piped out */
        !            51: #define        PPOU            (1<<11)         /* piped output */
        !            52: #define        PREPORTED       (1<<12)         /* status has been reported */
        !            53: #define        PINTERRUPTED    (1<<13)         /* job stopped via interrupt signal */
        !            54: #define        PPTIME          (1<<14)         /* time individual process */
        !            55: #define        PNEEDNOTE       (1<<15)         /* notify as soon as practical */
        !            56: 
        !            57: #define        PNULL           (struct process *)0
        !            58: #define        PMAXLEN         80
        !            59: 
        !            60: /* defines for arguments to pprint */
        !            61: #define        NUMBER          01
        !            62: #define        NAME            02
        !            63: #define        REASON          04
        !            64: #define        AMPERSAND       010
        !            65: #define        FANCY           020
        !            66: #define        SHELLDIR        040             /* print shell's dir if not the same */
        !            67: #define        JOBDIR          0100            /* print job's dir if not the same */
        !            68: #define        AREASON         0200
        !            69: 
        !            70: struct process proclist;               /* list head of all processes */
        !            71: bool   pnoprocesses;                   /* pchild found nothing to wait for */
        !            72: 
        !            73: struct process *pholdjob;              /* one level stack of current jobs */
        !            74: 
        !            75: struct process *pcurrjob;              /* current job */
        !            76: struct process *pcurrent;              /* current job in table */
        !            77: struct process *pprevious;             /* previous job in table */
        !            78: 
        !            79: short  pmaxindex;                      /* current maximum job index */
        !            80: 
        !            81: int    psigint();
        !            82: struct process *pgetcurr();
        !            83: struct process *plookup();
        !            84: struct process *pfind();

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