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Annotation of xinu/sys/sleep.c, revision 1.1.1.2

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: {
1.1.1.2 ! root       16: #ifdef DEBUG
        !            17:        dotrace("sleep", &n, 1);
        !            18: #endif
1.1       root       19:        if (n<0 || clkruns==0)
                     20:                return(SYSERR);
                     21:        if (n == 0) {
1.1.1.2 ! root       22:                disable();
        !            23:                resched();      /* resched assumes caller is disabled */
        !            24:                restore();
1.1       root       25:                return(OK);
                     26:        }
                     27:        while (n >= 1000) {
                     28:                sleep10(10000);
                     29:                n -= 1000;
                     30:        }
                     31:        if (n > 0)
                     32:                sleep10(10*n);
                     33:        return(OK);
                     34: }

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