/********************************************************************** * Copyright (c) Digital Equipment Corporation 1984, 1985, 1986. * * All Rights Reserved. * * Reference "/usr/src/COPYRIGHT" for applicable restrictions. * **********************************************************************/ /* * SCCSID: @(#)sh.proc.h 3.0 4/21/86 */ /* sh.proc.h 4.1 10/9/80 */ /* * C shell - process structure declarations */ /* * Structure for each process the shell knows about: * allocated and filled by pcreate. * flushed by pflush; freeing always happens at top level * so the interrupt level has less to worry about. * processes are related to "friends" when in a pipeline; * p_friends links makes a circular list of such jobs */ struct process { struct process *p_next; /* next in global "proclist" */ struct process *p_friends; /* next in job list (or self) */ struct directory *p_cwd; /* cwd of the job (only in head) */ short unsigned p_flags; /* various job status flags */ char p_reason; /* reason for entering this state */ char p_index; /* shorthand job index */ short p_pid; short p_jobid; /* pid of job leader */ /* if a job is stopped/background p_jobid gives its pgrp */ time_t p_btime; /* begin time */ time_t p_etime; /* end time */ long p_stime; /* system cpu time */ long p_utime; /* user cpu time */ #ifdef VMUNIX struct vtimes p_vtimes; #endif char *p_command; /* first PMAXLEN chars of command */ }; /* flag values for p_flags */ #define PRUNNING (1<<0) /* running */ #define PSTOPPED (1<<1) /* stopped */ #define PNEXITED (1<<2) /* normally exited */ #define PAEXITED (1<<3) /* abnormally exited */ #define PSIGNALED (1<<4) /* terminated by a signal != SIGINT */ #define PALLSTATES (PRUNNING|PSTOPPED|PNEXITED|PAEXITED|PSIGNALED|PINTERRUPTED) #define PNOTIFY (1<<5) /* notify async when done */ #define PTIME (1<<6) /* job times should be printed */ #define PAWAITED (1<<7) /* top level is waiting for it */ #define PFOREGND (1<<8) /* started in shells pgrp */ #define PDUMPED (1<<9) /* process dumped core */ #define PDIAG (1<<10) /* diagnostic output also piped out */ #define PPOU (1<<11) /* piped output */ #define PREPORTED (1<<12) /* status has been reported */ #define PINTERRUPTED (1<<13) /* job stopped via interrupt signal */ #define PPTIME (1<<14) /* time individual process */ #define PNEEDNOTE (1<<15) /* notify as soon as practical */ #define PNULL (struct process *)0 #define PMAXLEN 80 /* defines for arguments to pprint */ #define NUMBER 01 #define NAME 02 #define REASON 04 #define AMPERSAND 010 #define FANCY 020 #define SHELLDIR 040 /* print shell's dir if not the same */ #define JOBDIR 0100 /* print job's dir if not the same */ #define AREASON 0200 #define NOISEOK 0400 /* Use notify var. as msg prefix */ struct process proclist; /* list head of all processes */ bool pnoprocesses; /* pchild found nothing to wait for */ struct process *pholdjob; /* one level stack of current jobs */ struct process *pcurrjob; /* current job */ struct process *pcurrent; /* current job in table */ struct process *pprevious; /* previous job in table */ short pmaxindex; /* current maximum job index */ bool timesdone; /* shtimes buffer full ? */ int psigint(); struct process *pgetcurr(); struct process *plookup(); struct process *pfind();