#include "lockstack.h"
#include "lib/printf.h"

jove_owned_obj_t*
lockstack_push(lockstack_t *stack, jove_owned_obj_t *obj)
{
    if(stack->depth == LOCKSTACK_MAX) {
        klogf("lock stack exceeds %i entries\n", LOCKSTACK_MAX);
        return NULL;
    }
    if(obj == NULL) return obj;

    stack->stack[stack->depth++] = obj;
    return obj;
}

jove_obj_t*
lockstack_pop(lockstack_t *stack)
{
    return obj_release(stack->stack[--stack->depth]);
}

void
lockstack_popall(lockstack_t *stack)
{
    for(size_t i = 0; i < stack->depth; i++)
        obj_release(stack->stack[i]);
    stack->depth = 0;
}