55 lines
1.7 KiB
C
55 lines
1.7 KiB
C
/*
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* Random set of variables
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* used by more than one
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* routine.
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*/
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char canonb[CANBSIZ]; /* buffer for erase and kill (#@) */
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int coremap[CMAPSIZ]; /* space for core allocation */
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int swapmap[SMAPSIZ]; /* space for swap allocation */
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int *rootdir; /* pointer to inode of root directory */
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int cputype; /* type of cpu =40, 45, or 70 */
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int execnt; /* number of processes in exec */
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int lbolt; /* time of day in 60th not in time */
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int time[2]; /* time in sec from 1970 */
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int tout[2]; /* time of day of next sleep */
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/*
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* The callout structure is for
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* a routine arranging
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* to be called by the clock interrupt
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* (clock.c) with a specified argument,
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* in a specified amount of time.
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* Used, for example, to time tab
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* delays on teletypes.
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*/
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struct callo
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{
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int c_time; /* incremental time */
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int c_arg; /* argument to routine */
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int (*c_func)(); /* routine */
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} callout[NCALL];
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/*
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* Mount structure.
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* One allocated on every mount.
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* Used to find the super block.
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*/
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struct mount
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{
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int m_dev; /* device mounted */
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int *m_bufp; /* pointer to superblock */
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int *m_inodp; /* pointer to mounted on inode */
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} mount[NMOUNT];
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int mpid; /* generic for unique process id's */
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char runin; /* scheduling flag */
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char runout; /* scheduling flag */
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char runrun; /* scheduling flag */
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char curpri; /* more scheduling */
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int maxmem; /* actual max memory per process */
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int *lks; /* pointer to clock device */
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int rootdev; /* dev of root see conf.c */
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int swapdev; /* dev of swap see conf.c */
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int swplo; /* block number of swap space */
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int nswap; /* size of swap space */
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int updlock; /* lock for sync */
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int rablock; /* block to be read ahead */
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char regloc[]; /* locs. of saved user registers (trap.c) */
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