source: mainline/uspace/srv/sysman/unit.c@ 694253c

#include <assert.h>
#include <errno.h>
#include <fibril_synch.h>
#include <mem.h>
#include <stdio.h>
#include <stdlib.h>

#include "unit.h"

static void unit_init(unit_t *unit, unit_type_t type)
{
        assert(unit);

        link_initialize(&unit->units);
        
        unit->type = type;
        unit->state = STATE_EMBRYO;
        fibril_mutex_initialize(&unit->state_mtx);
        fibril_condvar_initialize(&unit->state_cv);

        list_initialize(&unit->dependants);
        list_initialize(&unit->dependencies);
}

unit_t *unit_create(unit_type_t type)
{
        unit_t *unit = malloc(sizeof(unit_t));
        if (unit != NULL) {
                unit_init(unit, type);
        }
        return unit;
}

/** Release resources used by unit structure */
void unit_destroy(unit_t **unit)
{
        if (*unit == NULL)
                return;
        /* TODO:
         *      edges,
         *      specific unit data,
         *      check it's not an active unit,
         *      other resources to come
         */
        free(*unit);
        *unit = NULL;
}

/** Issue request to restarter to start a unit
 *
 * Return from this function only means start request was issued.
 * If you need to wait for real start of the unit, use waiting on state_cv.
 */
int unit_start(unit_t *unit)
{
        // TODO actually start the unit
        printf("Starting unit of type %i\n", unit->type);
        return EOK;
}