cx-zivuos/sources/kernel.c

#ifndef ZV_DISABLE_DYNAMIC
#include <malloc.h>
#endif

#include "zivu_types.h"
#include "kernel.h"
#include "process.h"

#ifndef ZV_DISABLE_DYNAMIC

zv_kernel_t * zv_kernel_create() {
    zv_kernel_t *self = (zv_kernel_t *) malloc(sizeof(zv_kernel_t));
    
    if (self != NULL) {
        zv_kernel_init(self, NULL, 0x00);
    }

    return self;
}

#else

zv_kernel_t * zv_kernel_create() {
    return (zv_kernel_t *) NULL;
}

#endif

/* For dynamic also kernel. */
#ifndef ZV_DISABLE_DYNAMIC

void zv_kernel_init(
    zv_kernel_t *self, 
    zv_process_t *container,
    zv_pid_t processes_count
) {
    self->current_process = ZV_IDLE_PROCESS;

    if (container != NULL) { 
        self->processes = container;
        self->processes_count = processes_count;
        self->is_dynamic = false;
        
        return;
    }

    self->processes_count = ZV_PROCESSES_STEP * 1;
    self->processes = (zv_process_t *) malloc(ZV_PROCESSES_STEP_SIZE * 1);
    self->is_dynamic = true;

    /* When cannot alloc, make kernel unuseable. */
    if (self->processes == NULL) {
        self->processes_count = 0x00;
        self->is_dynamic = false;
    }
}

#else 

void zv_kernel_init(
    zv_kernel_t *self, 
    zv_process_t *container,
    zv_pid_t processes_count
) {
    self->current_process = ZV_IDLE_PROCESS;
    self->processes = container;
    self->processes_count = processes_count;
}

#endif