projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 0edd06b4 KT |
1 | /* |
| 2 | * tunable variables | |
| 3 | */ | |
| 4 | ||
| 5 | #define NBUF 15 /* size of buffer cache */ | |
| 6 | #define NINODE 100 /* number of in core inodes */ | |
| 7 | #define NFILE 100 /* number of in core file structures */ | |
| 8 | #define NMOUNT 5 /* number of mountable file systems */ | |
| 9 | #define NEXEC 3 /* number of simultaneous exec's */ | |
| 10 | #define MAXMEM (64*32) /* max core per process - first # is Kw */ | |
| 11 | #define SSIZE 20 /* initial stack size (*64 bytes) */ | |
| 12 | #define SINCR 20 /* increment of stack (*64 bytes) */ | |
| 13 | #define NOFILE 15 /* max open files per process */ | |
| 14 | #define CANBSIZ 256 /* max size of typewriter line */ | |
| 15 | #define CMAPSIZ 100 /* size of core allocation area */ | |
| 16 | #define SMAPSIZ 100 /* size of swap allocation area */ | |
| 17 | #define NCALL 20 /* max simultaneous time callouts */ | |
| 18 | #define NPROC 50 /* max number of processes */ | |
| 19 | #define NTEXT 40 /* max number of pure texts */ | |
| 20 | #define NCLIST 100 /* max total clist size */ | |
| 21 | #define HZ 60 /* Ticks/second of the clock */ | |
| 22 | ||
| 23 | /* | |
| 24 | * priorities | |
| 25 | * probably should not be | |
| 26 | * altered too much | |
| 27 | */ | |
| 28 | ||
| 29 | #define PSWP -100 | |
| 30 | #define PINOD -90 | |
| 31 | #define PRIBIO -50 | |
| 32 | #define PPIPE 1 | |
| 33 | #define PWAIT 40 | |
| 34 | #define PSLEP 90 | |
| 35 | #define PUSER 100 | |
| 36 | ||
| 37 | /* | |
| 38 | * signals | |
| 39 | * dont change | |
| 40 | */ | |
| 41 | ||
| 42 | #define NSIG 20 | |
| 43 | #define SIGHUP 1 /* hangup */ | |
| 44 | #define SIGINT 2 /* interrupt (rubout) */ | |
| 45 | #define SIGQIT 3 /* quit (FS) */ | |
| 46 | #define SIGINS 4 /* illegal instruction */ | |
| 47 | #define SIGTRC 5 /* trace or breakpoint */ | |
| 48 | #define SIGIOT 6 /* iot */ | |
| 49 | #define SIGEMT 7 /* emt */ | |
| 50 | #define SIGFPT 8 /* floating exception */ | |
| 51 | #define SIGKIL 9 /* kill */ | |
| 52 | #define SIGBUS 10 /* bus error */ | |
| 53 | #define SIGSEG 11 /* segmentation violation */ | |
| 54 | #define SIGSYS 12 /* sys */ | |
| 55 | #define SIGPIPE 13 /* end of pipe */ | |
| 56 | ||
| 57 | /* | |
| 58 | * fundamental constants | |
| 59 | * cannot be changed | |
| 60 | */ | |
| 61 | ||
| 62 | #define USIZE 16 /* size of user block (*64) */ | |
| 63 | #define NULL 0 | |
| 64 | #define NODEV (-1) | |
| 65 | #define ROOTINO 1 /* i number of all roots */ | |
| 66 | #define DIRSIZ 14 /* max characters per directory */ | |
| 67 | ||
| 68 | /* | |
| 69 | * structure to access an | |
| 70 | * integer in bytes | |
| 71 | */ | |
| 72 | struct | |
| 73 | { | |
| 74 | char lobyte; | |
| 75 | char hibyte; | |
| 76 | }; | |
| 77 | ||
| 78 | /* | |
| 79 | * structure to access an integer | |
| 80 | */ | |
| 81 | struct | |
| 82 | { | |
| 83 | int integ; | |
| 84 | }; | |
| 85 | ||
| 86 | /* | |
| 87 | * Certain processor registers | |
| 88 | */ | |
| 89 | #define PS 0177776 | |
| 90 | #define KL 0177560 | |
| 91 | #define SW 0177570 |