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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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