1 /* 2 * Copyright 1999 Sun Microsystems, Inc. All rights reserved. 3 * Use is subject to license terms. 4 */ 5 6 /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */ 7 /* All Rights Reserved */ 8 9 /* 10 * Copyright (c) 1980 Regents of the University of California. 11 * All rights reserved. The Berkeley Software License Agreement 12 * specifies the terms and conditions for redistribution. 13 */ 14 15 #pragma ident "%Z%%M% %I% %E% SMI" 16 17 /* 18 * C shell - process structure declarations 19 */ 20 21 /* 22 * Structure for each process the shell knows about: 23 * allocated and filled by pcreate. 24 * flushed by pflush; freeing always happens at top level 25 * so the interrupt level has less to worry about. 26 * processes are related to "friends" when in a pipeline; 27 * p_friends links makes a circular list of such jobs 28 */ 29 struct process { 30 struct process *p_next; /* next in global "proclist" */ 31 struct process *p_friends; /* next in job list (or self) */ 32 struct directory *p_cwd; /* cwd of the job (only in head) */ 33 short unsigned p_flags; /* various job status flags */ 34 tchar p_reason; /* reason for entering this state */ 35 tchar p_index; /* shorthand job index */ 36 int p_pid; 37 int p_jobid; /* pid of job leader */ 38 /* if a job is stopped/background p_jobid gives its pgrp */ 39 struct timeval p_btime; /* begin time */ 40 struct timeval p_etime; /* end time */ 41 struct rusage p_rusage; 42 tchar *p_command; /* first PMAXLEN chars of command */ 43 }; 44 45 /* added for status */ 46 #define ABN_TERM 0200 47 48 /* flag values for p_flags */ 49 #define PRUNNING (1<<0) /* running */ 50 #define PSTOPPED (1<<1) /* stopped */ 51 #define PNEXITED (1<<2) /* normally exited */ 52 #define PAEXITED (1<<3) /* abnormally exited */ 53 #define PSIGNALED (1<<4) /* terminated by a signal != SIGINT */ 54 55 #define PALLSTATES (PRUNNING|PSTOPPED|PNEXITED|PAEXITED|PSIGNALED|PINTERRUPTED) 56 #define PNOTIFY (1<<5) /* notify async when done */ 57 #define PTIME (1<<6) /* job times should be printed */ 58 #define PAWAITED (1<<7) /* top level is waiting for it */ 59 #define PFOREGND (1<<8) /* started in shells pgrp */ 60 #define PDUMPED (1<<9) /* process dumped core */ 61 #define PDIAG (1<<10) /* diagnostic output also piped out */ 62 #define PPOU (1<<11) /* piped output */ 63 #define PREPORTED (1<<12) /* status has been reported */ 64 #define PINTERRUPTED (1<<13) /* job stopped via interrupt signal */ 65 #define PPTIME (1<<14) /* time individual process */ 66 #define PNEEDNOTE (1<<15) /* notify as soon as practical */ 67 68 #define PNULL (struct process *)0 69 #define PMAXLEN 80 70 71 /* defines for arguments to pprint */ 72 #define NUMBER 01 73 #define NAME 02 74 #define REASON 04 75 #define AMPERSAND 010 76 #define FANCY 020 77 #define SHELLDIR 040 /* print shell's dir if not the same */ 78 #define JOBDIR 0100 /* print job's dir if not the same */ 79 #define AREASON 0200 80 81 struct process proclist; /* list head of all processes */ 82 bool pnoprocesses; /* pchild found nothing to wait for */ 83 84 struct process *pholdjob; /* one level stack of current jobs */ 85 86 struct process *pcurrjob; /* current job */ 87 struct process *pcurrent; /* current job in table */ 88 struct process *pprevious; /* previous job in table */ 89 90 short pmaxindex; /* current maximum job index */ 91 92 int psigint(); 93 struct process *pgetcurr(); 94 struct process *plookup(); 95 struct process *pfind(); 96