92 lines
2.1 KiB
C
92 lines
2.1 KiB
C
/*
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* tunable variables
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*/
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#define NBUF 15 /* size of buffer cache */
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#define NINODE 100 /* number of in core inodes */
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#define NFILE 100 /* number of in core file structures */
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#define NMOUNT 5 /* number of mountable file systems */
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#define NEXEC 3 /* number of simultaneous exec's */
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#define MAXMEM (64*32) /* max core per process - first # is Kw */
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#define SSIZE 20 /* initial stack size (*64 bytes) */
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#define SINCR 20 /* increment of stack (*64 bytes) */
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#define NOFILE 15 /* max open files per process */
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#define CANBSIZ 256 /* max size of typewriter line */
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#define CMAPSIZ 100 /* size of core allocation area */
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#define SMAPSIZ 100 /* size of swap allocation area */
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#define NCALL 20 /* max simultaneous time callouts */
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#define NPROC 50 /* max number of processes */
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#define NTEXT 40 /* max number of pure texts */
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#define NCLIST 100 /* max total clist size */
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#define HZ 60 /* Ticks/second of the clock */
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/*
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* priorities
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* probably should not be
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* altered too much
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*/
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#define PSWP -100
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#define PINOD -90
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#define PRIBIO -50
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#define PPIPE 1
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#define PWAIT 40
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#define PSLEP 90
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#define PUSER 100
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/*
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* signals
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* dont change
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*/
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#define NSIG 20
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#define SIGHUP 1 /* hangup */
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#define SIGINT 2 /* interrupt (rubout) */
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#define SIGQIT 3 /* quit (FS) */
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#define SIGINS 4 /* illegal instruction */
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#define SIGTRC 5 /* trace or breakpoint */
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#define SIGIOT 6 /* iot */
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#define SIGEMT 7 /* emt */
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#define SIGFPT 8 /* floating exception */
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#define SIGKIL 9 /* kill */
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#define SIGBUS 10 /* bus error */
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#define SIGSEG 11 /* segmentation violation */
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#define SIGSYS 12 /* sys */
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#define SIGPIPE 13 /* end of pipe */
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/*
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* fundamental constants
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* cannot be changed
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*/
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#define USIZE 16 /* size of user block (*64) */
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#define NULL 0
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#define NODEV (-1)
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#define ROOTINO 1 /* i number of all roots */
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#define DIRSIZ 14 /* max characters per directory */
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/*
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* structure to access an
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* integer in bytes
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*/
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struct
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{
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char lobyte;
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char hibyte;
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};
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/*
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* structure to access an integer
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*/
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struct
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{
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int integ;
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};
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/*
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* Certain processor registers
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*/
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#define PS 0177776
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#define KL 0177560
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#define SW 0177570
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