1 /* proc.h 4.1 10/09/80 */ 2 3 /* 4 * C shell - process structure declarations 5 */ 6 7 /* 8 * Structure for each process the shell knows about: 9 * allocated and filled by pcreate. 10 * flushed by pflush; freeing always happens at top level 11 * so the interrupt level has less to worry about. 12 * processes are related to "friends" when in a pipeline; 13 * p_friends links makes a circular list of such jobs 14 */ 15 struct process { 16 struct process *p_next; /* next in global "proclist" */ 17 struct process *p_friends; /* next in job list (or self) */ 18 struct directory *p_cwd; /* cwd of the job (only in head) */ 19 short unsigned p_flags; /* various job status flags */ 20 char p_reason; /* reason for entering this state */ 21 char p_index; /* shorthand job index */ 22 short p_pid; 23 short p_jobid; /* pid of job leader */ 24 /* if a job is stopped/background p_jobid gives its pgrp */ 25 time_t p_btime; /* begin time */ 26 time_t p_etime; /* end time */ 27 long p_stime; /* system cpu time */ 28 long p_utime; /* user cpu time */ 29 #ifdef VMUNIX 30 struct vtimes p_vtimes; 31 #endif 32 char *p_command; /* first PMAXLEN chars of command */ 33 }; 34 35 /* flag values for p_flags */ 36 #define PRUNNING (1<<0) /* running */ 37 #define PSTOPPED (1<<1) /* stopped */ 38 #define PNEXITED (1<<2) /* normally exited */ 39 #define PAEXITED (1<<3) /* abnormally exited */ 40 #define PSIGNALED (1<<4) /* terminated by a signal != SIGINT */ 41 42 #define PALLSTATES (PRUNNING|PSTOPPED|PNEXITED|PAEXITED|PSIGNALED|PINTERRUPTED) 43 #define PNOTIFY (1<<5) /* notify async when done */ 44 #define PTIME (1<<6) /* job times should be printed */ 45 #define PAWAITED (1<<7) /* top level is waiting for it */ 46 #define PFOREGND (1<<8) /* started in shells pgrp */ 47 #define PDUMPED (1<<9) /* process dumped core */ 48 #define PDIAG (1<<10) /* diagnostic output also piped out */ 49 #define PPOU (1<<11) /* piped output */ 50 #define PREPORTED (1<<12) /* status has been reported */ 51 #define PINTERRUPTED (1<<13) /* job stopped via interrupt signal */ 52 #define PPTIME (1<<14) /* time individual process */ 53 #define PNEEDNOTE (1<<15) /* notify as soon as practical */ 54 55 #define PNULL (struct process *)0 56 #define PMAXLEN 80 57 58 /* defines for arguments to pprint */ 59 #define NUMBER 01 60 #define NAME 02 61 #define REASON 04 62 #define AMPERSAND 010 63 #define FANCY 020 64 #define SHELLDIR 040 /* print shell's dir if not the same */ 65 #define JOBDIR 0100 /* print job's dir if not the same */ 66 #define AREASON 0200 67 68 struct process proclist; /* list head of all processes */ 69 bool pnoprocesses; /* pchild found nothing to wait for */ 70 71 struct process *pholdjob; /* one level stack of current jobs */ 72 73 struct process *pcurrjob; /* current job */ 74 struct process *pcurrent; /* current job in table */ 75 struct process *pprevious; /* previous job in table */ 76 77 short pmaxindex; /* current maximum job index */ 78 79 bool timesdone; /* shtimes buffer full ? */ 80 81 int psigint(); 82 struct process *pgetcurr(); 83 struct process *plookup(); 84 struct process *pfind(); 85