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 * @(#)proc.h 5.2 (Berkeley) 06/06/85 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(); 85