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#include <stdlib.h>
#include <string.h>
#include "io_u_queue.h"
#include "smalloc.h"
bool io_u_qinit(struct io_u_queue *q, unsigned int nr, bool shared)
{
if (shared)
q->io_us = smalloc(nr * sizeof(struct io_u *));
else
q->io_us = calloc(nr, sizeof(struct io_u *));
if (!q->io_us)
return false;
q->nr = 0;
q->max = nr;
return true;
}
void io_u_qexit(struct io_u_queue *q, bool shared)
{
if (shared)
sfree(q->io_us);
else
free(q->io_us);
}
bool 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 false;
ring->head = ring->tail = 0;
return true;
}
void io_u_rexit(struct io_u_ring *ring)
{
free(ring->ring);
}
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