sleep.c File Reference

#include <xinu.h>

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Macros
#define	MAXSECONDS   2147483 /* Max seconds per 32-bit msec */

Functions
syscall	sleep (int32 delay)
syscall	sleepms (int32 delay)

Macro Definition Documentation

MAXSECONDS

#define MAXSECONDS   2147483 /* Max seconds per 32-bit msec */

Definition at line 5 of file sleep.c.

Referenced by sleep().

Function Documentation

sleep()

syscall sleep

(

int32

delay

)

Definition at line 11 of file sleep.c.

References MAXSECONDS, OK, sleepms(), and SYSERR.

Referenced by xsh_sleep().

{
    if ( (delay < 0) || (delay > MAXSECONDS) ) {
        return SYSERR;
    }
    sleepms(1000*delay);
    return OK;
}

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sleepms()

syscall sleepms

(

int32

delay

)

Definition at line 26 of file sleep.c.

References currpid, disable(), insertd(), OK, PR_SLEEP, proctab, procent::prstate, resched(), restore(), sleepq, SYSERR, and yield().

Referenced by main(), and sleep().

{
    intmask mask;           /* Saved interrupt mask     */

    if (delay < 0) {
        return SYSERR;
    }

    if (delay == 0) {
        yield();
        return OK;
    }

    /* Delay calling process */

    mask = disable();
    if (insertd(currpid, sleepq, delay) == SYSERR) {
        restore(mask);
        return SYSERR;
    }

    proctab[currpid].prstate = PR_SLEEP;
    resched();
    restore(mask);
    return OK;
}

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