2.9BSD - /usr/src/ucb/csh/sh.proc.h

   1: /* sh.proc.h 4.1 10/9/80 */
   2: 
   3: /*
   4:  * C shell - process structure declarations
   5:  */
   6: 
   7: /*
   8:  * Structure for each process the shell knows about:
   9:  *	allocated and filled by pcreate.
  10:  *	flushed by pflush; freeing always happens at top level
  11:  *	    so the interrupt level has less to worry about.
  12:  *	processes are related to "friends" when in a pipeline;
  13:  *	    p_friends links makes a circular list of such jobs
  14:  */
  15: struct process  {
  16:     struct  process *p_next;    /* next in global "proclist" */
  17:     struct  process *p_friends; /* next in job list (or self) */
  18:     struct  directory *p_cwd;   /* cwd of the job (only in head) */
  19:     short   unsigned p_flags;   /* various job status flags */
  20:     char    p_reason;       /* reason for entering this state */
  21:     char    p_index;        /* shorthand job index */
  22:     short   p_pid;
  23:     short   p_jobid;        /* pid of job leader */
  24:     /* if a job is stopped/background p_jobid gives its pgrp */
  25:     time_t  p_btime;        /* begin time */
  26:     time_t  p_etime;        /* end time */
  27:     long    p_stime;        /* system cpu time */
  28:     long    p_utime;        /* user cpu time */
  29: #ifdef VMUNIX
  30:     struct  vtimes p_vtimes;
  31: #endif
  32:     char    *p_command;     /* first PMAXLEN chars of command */
  33: };
  34: 
  35: /* flag values for p_flags */
  36: #define PRUNNING    (1<<0)      /* running */
  37: #define PSTOPPED    (1<<1)      /* stopped */
  38: #define PNEXITED    (1<<2)      /* normally exited */
  39: #define PAEXITED    (1<<3)      /* abnormally exited */
  40: #define PSIGNALED   (1<<4)      /* terminated by a signal != SIGINT */
  41: 
  42: #define PALLSTATES  (PRUNNING|PSTOPPED|PNEXITED|PAEXITED|PSIGNALED|PINTERRUPTED)
  43: #define PNOTIFY     (1<<5)      /* notify async when done */
  44: #define PTIME       (1<<6)      /* job times should be printed */
  45: #define PAWAITED    (1<<7)      /* top level is waiting for it */
  46: #define PFOREGND    (1<<8)      /* started in shells pgrp */
  47: #define PDUMPED     (1<<9)      /* process dumped core */
  48: #define PDIAG       (1<<10)     /* diagnostic output also piped out */
  49: #define PPOU        (1<<11)     /* piped output */
  50: #define PREPORTED   (1<<12)     /* status has been reported */
  51: #define PINTERRUPTED    (1<<13)     /* job stopped via interrupt signal */
  52: #define PPTIME      (1<<14)     /* time individual process */
  53: #define PNEEDNOTE   (1<<15)     /* notify as soon as practical */
  54: 
  55: #define PNULL       (struct process *)0
  56: #define PMAXLEN     80
  57: 
  58: /* defines for arguments to pprint */
  59: #define NUMBER      01
  60: #define NAME        02
  61: #define REASON      04
  62: #define AMPERSAND   010
  63: #define FANCY       020
  64: #define SHELLDIR    040     /* print shell's dir if not the same */
  65: #define JOBDIR      0100        /* print job's dir if not the same */
  66: #define AREASON     0200
  67: 
  68: struct  process proclist;       /* list head of all processes */
  69: bool    pnoprocesses;           /* pchild found nothing to wait for */
  70: 
  71: struct  process *pholdjob;      /* one level stack of current jobs */
  72: 
  73: struct  process *pcurrjob;      /* current job */
  74: struct  process *pcurrent;      /* current job in table */
  75: struct  process *pprevious;     /* previous job in table */
  76: 
  77: short   pmaxindex;          /* current maximum job index */
  78: 
  79: bool    timesdone;          /* shtimes buffer full ? */
  80: 
  81: int psigint();
  82: struct  process *pgetcurr();
  83: struct  process *plookup();
  84: struct  process *pfind();

Defined variables

Defined struct's

Defined macros

Usage of this include