1 /*- 2 * Copyright (c) 1980, 1991 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 * 7 * @(#)proc.h 5.3 (Berkeley) 04/04/91 8 */ 9 10 /* 11 * C shell - process structure declarations 12 */ 13 14 /* 15 * Structure for each process the shell knows about: 16 * allocated and filled by pcreate. 17 * flushed by pflush; freeing always happens at top level 18 * so the interrupt level has less to worry about. 19 * processes are related to "friends" when in a pipeline; 20 * p_friends links makes a circular list of such jobs 21 */ 22 struct process { 23 struct process *p_next; /* next in global "proclist" */ 24 struct process *p_friends; /* next in job list (or self) */ 25 struct directory *p_cwd; /* cwd of the job (only in head) */ 26 short unsigned p_flags; /* various job status flags */ 27 char p_reason; /* reason for entering this state */ 28 char p_index; /* shorthand job index */ 29 int p_pid; 30 int p_jobid; /* pid of job leader */ 31 /* if a job is stopped/background p_jobid gives its pgrp */ 32 struct timeval p_btime; /* begin time */ 33 struct timeval p_etime; /* end time */ 34 struct rusage p_rusage; 35 char *p_command; /* first PMAXLEN chars of command */ 36 }; 37 38 /* flag values for p_flags */ 39 #define PRUNNING (1<<0) /* running */ 40 #define PSTOPPED (1<<1) /* stopped */ 41 #define PNEXITED (1<<2) /* normally exited */ 42 #define PAEXITED (1<<3) /* abnormally exited */ 43 #define PSIGNALED (1<<4) /* terminated by a signal != SIGINT */ 44 45 #define PALLSTATES (PRUNNING|PSTOPPED|PNEXITED|PAEXITED|PSIGNALED|PINTERRUPTED) 46 #define PNOTIFY (1<<5) /* notify async when done */ 47 #define PTIME (1<<6) /* job times should be printed */ 48 #define PAWAITED (1<<7) /* top level is waiting for it */ 49 #define PFOREGND (1<<8) /* started in shells pgrp */ 50 #define PDUMPED (1<<9) /* process dumped core */ 51 #define PDIAG (1<<10) /* diagnostic output also piped out */ 52 #define PPOU (1<<11) /* piped output */ 53 #define PREPORTED (1<<12) /* status has been reported */ 54 #define PINTERRUPTED (1<<13) /* job stopped via interrupt signal */ 55 #define PPTIME (1<<14) /* time individual process */ 56 #define PNEEDNOTE (1<<15) /* notify as soon as practical */ 57 58 #define PNULL (struct process *)0 59 #define PMAXLEN 80 60 61 /* defines for arguments to pprint */ 62 #define NUMBER 01 63 #define NAME 02 64 #define REASON 04 65 #define AMPERSAND 010 66 #define FANCY 020 67 #define SHELLDIR 040 /* print shell's dir if not the same */ 68 #define JOBDIR 0100 /* print job's dir if not the same */ 69 #define AREASON 0200 70 71 struct process proclist; /* list head of all processes */ 72 bool pnoprocesses; /* pchild found nothing to wait for */ 73 74 struct process *pholdjob; /* one level stack of current jobs */ 75 76 struct process *pcurrjob; /* current job */ 77 struct process *pcurrent; /* current job in table */ 78 struct process *pprevious; /* previous job in table */ 79 80 short pmaxindex; /* current maximum job index */ 81 82 int psigint(); 83 struct process *pgetcurr(); 84 struct process *plookup(); 85 struct process *pfind(); 86