1 /*- 2 * Copyright (c) 1980, 1991, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 * 7 * @(#)proc.h 8.1 (Berkeley) 05/31/93 8 */ 9 10 /* 11 * Structure for each process the shell knows about: 12 * allocated and filled by pcreate. 13 * flushed by pflush; freeing always happens at top level 14 * so the interrupt level has less to worry about. 15 * processes are related to "friends" when in a pipeline; 16 * p_friends links makes a circular list of such jobs 17 */ 18 struct process { 19 struct process *p_next; /* next in global "proclist" */ 20 struct process *p_friends; /* next in job list (or self) */ 21 struct directory *p_cwd; /* cwd of the job (only in head) */ 22 short unsigned p_flags; /* various job status flags */ 23 char p_reason; /* reason for entering this state */ 24 int p_index; /* shorthand job index */ 25 int p_pid; 26 int p_jobid; /* pid of job leader */ 27 /* if a job is stopped/background p_jobid gives its pgrp */ 28 struct timeval p_btime; /* begin time */ 29 struct timeval p_etime; /* end time */ 30 struct rusage p_rusage; 31 Char *p_command; /* first PMAXLEN chars of command */ 32 }; 33 34 /* flag values for p_flags */ 35 #define PRUNNING (1<<0) /* running */ 36 #define PSTOPPED (1<<1) /* stopped */ 37 #define PNEXITED (1<<2) /* normally exited */ 38 #define PAEXITED (1<<3) /* abnormally exited */ 39 #define PSIGNALED (1<<4) /* terminated by a signal != SIGINT */ 40 41 #define PALLSTATES (PRUNNING|PSTOPPED|PNEXITED|PAEXITED|PSIGNALED|PINTERRUPTED) 42 #define PNOTIFY (1<<5) /* notify async when done */ 43 #define PTIME (1<<6) /* job times should be printed */ 44 #define PAWAITED (1<<7) /* top level is waiting for it */ 45 #define PFOREGND (1<<8) /* started in shells pgrp */ 46 #define PDUMPED (1<<9) /* process dumped core */ 47 #define PERR (1<<10) /* diagnostic output also piped out */ 48 #define PPOU (1<<11) /* piped output */ 49 #define PREPORTED (1<<12) /* status has been reported */ 50 #define PINTERRUPTED (1<<13) /* job stopped via interrupt signal */ 51 #define PPTIME (1<<14) /* time individual process */ 52 #define PNEEDNOTE (1<<15) /* notify as soon as practical */ 53 54 #define PMAXLEN 80 55 56 /* defines for arguments to pprint */ 57 #define NUMBER 01 58 #define NAME 02 59 #define REASON 04 60 #define AMPERSAND 010 61 #define FANCY 020 62 #define SHELLDIR 040 /* print shell's dir if not the same */ 63 #define JOBDIR 0100 /* print job's dir if not the same */ 64 #define AREASON 0200 65 66 struct process proclist; /* list head of all processes */ 67 bool pnoprocesses; /* pchild found nothing to wait for */ 68 69 struct process *pholdjob; /* one level stack of current jobs */ 70 71 struct process *pcurrjob; /* current job */ 72 struct process *pcurrent; /* current job in table */ 73 struct process *pprevious; /* previous job in table */ 74 75 int pmaxindex; /* current maximum job index */ 76