projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 0b076053 BJ |
1 | /* proc.h 4.1 %G% */ |
| 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(); |