cx-zivuos/sources/round_roubin_first_match_scheduler.c

#include "kernel.h"
#include "scheduler.h"

#ifndef ZV_FULL_DISABLE_ROUND_ROUBIN_FIRST_MATCH

zv_process_t * zv_kernel_round_first_match(zv_kernel_t *self) {
    zv_pid_t size = self->processes_count;
    zv_pid_t count = (self->last + 1) % size;

    while (count != self->last) {
        zv_process_t *current = self->processes + count;
        
        if (zv_process_is_ready(current)) {
            return current;
        }

        count = (count + 1) % size;
    }

    return NULL;
}

#else

zv_process_t * zv_kernel_round_first_match(zv_kernel_t *self) {
    return NULL;
}

#endif