Annotation of xinu/sys/sleep.c, revision 1.1.1.1

1.1       root        1: /* sleep.c - sleep */
                      2: 
                      3: #include <conf.h>
                      4: #include <kernel.h>
                      5: #include <proc.h>
                      6: #include <q.h>
                      7: #include <sleep.h>
                      8: 
                      9: /*------------------------------------------------------------------------
                     10:  * sleep  --  delay the calling process n seconds
                     11:  *------------------------------------------------------------------------
                     12:  */
                     13: SYSCALL        sleep(n)
                     14:        int     n;
                     15: {
                     16:        PStype  ps;
                     17: 
                     18:        if (n<0 || clkruns==0)
                     19:                return(SYSERR);
                     20:        if (n == 0) {
                     21:                disable(ps);
                     22:                resched();
                     23:                restore(ps);
                     24:                return(OK);
                     25:        }
                     26:        while (n >= 1000) {
                     27:                sleep10(10000);
                     28:                n -= 1000;
                     29:        }
                     30:        if (n > 0)
                     31:                sleep10(10*n);
                     32:        return(OK);
                     33: }

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