/*
- * native linux aio io engine
+ * libaio engine
+ *
+ * IO engine using the Linux native aio interface.
*
*/
#include <stdio.h>
#include <assert.h>
#include "../fio.h"
-#include "../os.h"
#ifdef FIO_HAVE_LIBAIO
static struct io_u *fio_libaio_event(struct thread_data *td, int event)
{
struct libaio_data *ld = td->io_ops->data;
+ struct io_event *ev;
+ struct io_u *io_u;
+
+ ev = ld->aio_events + event;
+ io_u = ev_to_iou(ev);
+
+ if (ev->res != io_u->xfer_buflen) {
+ if (ev->res > io_u->xfer_buflen)
+ io_u->error = -ev->res;
+ else
+ io_u->resid = io_u->xfer_buflen - ev->res;
+ } else
+ io_u->error = 0;
- return ev_to_iou(ld->aio_events + event);
+ return io_u;
}
-static int fio_libaio_getevents(struct thread_data *td, int min, int max,
- struct timespec *t)
+static int fio_libaio_getevents(struct thread_data *td, unsigned int min,
+ unsigned int max, struct timespec *t)
{
struct libaio_data *ld = td->io_ops->data;
long r;
{
struct libaio_data *ld = td->io_ops->data;
- if (ld->iocbs_nr == (int) td->iodepth)
+ fio_ro_check(td, io_u);
+
+ if (ld->iocbs_nr == (int) td->o.iodepth)
return FIO_Q_BUSY;
/*
static int fio_libaio_init(struct thread_data *td)
{
struct libaio_data *ld = malloc(sizeof(*ld));
+ static int warn_print;
+ int err;
+
+ if (td->o.iodepth > 1 && !td->o.odirect && !warn_print) {
+ log_info("fio: libaio engine is only async for non-buffered IO\n");
+ warn_print = 1;
+ }
memset(ld, 0, sizeof(*ld));
- if (io_queue_init(td->iodepth, &ld->aio_ctx)) {
- td_verror(td, errno);
+
+ err = io_queue_init(td->o.iodepth, &ld->aio_ctx);
+ if (err) {
+ td_verror(td, -err, "io_queue_init");
free(ld);
return 1;
}
- ld->aio_events = malloc(td->iodepth * sizeof(struct io_event));
- memset(ld->aio_events, 0, td->iodepth * sizeof(struct io_event));
- ld->iocbs = malloc(td->iodepth * sizeof(struct iocb *));
+ ld->aio_events = malloc(td->o.iodepth * sizeof(struct io_event));
+ memset(ld->aio_events, 0, td->o.iodepth * sizeof(struct io_event));
+ ld->iocbs = malloc(td->o.iodepth * sizeof(struct iocb *));
memset(ld->iocbs, 0, sizeof(struct iocb *));
- ld->io_us = malloc(td->iodepth * sizeof(struct io_u *));
- memset(ld->io_us, 0, td->iodepth * sizeof(struct io_u *));
+ ld->io_us = malloc(td->o.iodepth * sizeof(struct io_u *));
+ memset(ld->io_us, 0, td->o.iodepth * sizeof(struct io_u *));
ld->iocbs_nr = 0;
td->io_ops->data = ld;
.getevents = fio_libaio_getevents,
.event = fio_libaio_event,
.cleanup = fio_libaio_cleanup,
+ .open_file = generic_open_file,
+ .close_file = generic_close_file,
};
#else /* FIO_HAVE_LIBAIO */