blob: 80a32ba3afd20d4a8b3669935ca10d035720a554 [file] [log] [blame]
#include <stdlib.h>
#include "io_u_queue.h"
int io_u_qinit(struct io_u_queue *q, unsigned int nr)
{
q->io_us = calloc(nr, sizeof(struct io_u *));
if (!q->io_us)
return 1;
q->nr = 0;
return 0;
}
void io_u_qexit(struct io_u_queue *q)
{
free(q->io_us);
}
int io_u_rinit(struct io_u_ring *ring, unsigned int nr)
{
ring->max = nr + 1;
if (ring->max & (ring->max - 1)) {
ring->max--;
ring->max |= ring->max >> 1;
ring->max |= ring->max >> 2;
ring->max |= ring->max >> 4;
ring->max |= ring->max >> 8;
ring->max |= ring->max >> 16;
ring->max++;
}
ring->ring = calloc(ring->max, sizeof(struct io_u *));
if (!ring->ring)
return 1;
ring->head = ring->tail = 0;
return 0;
}
void io_u_rexit(struct io_u_ring *ring)
{
free(ring->ring);
}