thrd_sleep.c

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#include <stdatomic.h>
#include <stdbool.h>
#include <stdio.h>
#include <sys/proc.h>
#include <threads.h>
 
#include "user/common/syscalls.h"
#include "user/common/thread.h"
 
int thrd_sleep(const struct timespec* duration, struct timespec* remaining)
{
    uint64_t nanoseconds = (uint64_t)duration->tv_sec * CLOCKS_PER_SEC + (uint64_t)duration->tv_nsec;
 
    if (remaining != NULL)
    {
        clock_t start = uptime();
        nanosleep(nanoseconds);
        clock_t end = uptime();
 
        clock_t timeLeft = nanoseconds - (end - start);
        remaining->tv_sec = timeLeft / CLOCKS_PER_SEC;
        remaining->tv_nsec = timeLeft % CLOCKS_PER_SEC;
    }
    else
    {
        nanosleep(nanoseconds);
    }
 
    return 0;
}