* IO engine using the Linux native aio interface.
*
*/
-#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
-#include <assert.h>
#include <libaio.h>
#include "../fio.h"
+#include "../lib/pow2.h"
+#include "../optgroup.h"
static int fio_libaio_commit(struct thread_data *td);
};
struct libaio_options {
- struct thread_data *td;
+ void *pad;
unsigned int userspace_reap;
};
static struct io_u *fio_libaio_event(struct thread_data *td, int event)
{
- struct libaio_data *ld = td->io_ops->data;
+ struct libaio_data *ld = td->io_ops_data;
struct io_event *ev;
struct io_u *io_u;
static int fio_libaio_getevents(struct thread_data *td, unsigned int min,
unsigned int max, const struct timespec *t)
{
- struct libaio_data *ld = td->io_ops->data;
+ struct libaio_data *ld = td->io_ops_data;
struct libaio_options *o = td->eo;
- unsigned actual_min = td->o.iodepth_batch_complete == 0 ? 0 : min;
+ unsigned actual_min = td->o.iodepth_batch_complete_min == 0 ? 0 : min;
struct timespec __lt, *lt = NULL;
int r, events = 0;
events += r;
else if ((min && r == 0) || r == -EAGAIN) {
fio_libaio_commit(td);
- usleep(100);
+ if (actual_min)
+ usleep(10);
} else if (r != -EINTR)
break;
} while (events < min);
return r < 0 ? r : events;
}
-static int fio_libaio_queue(struct thread_data *td, struct io_u *io_u)
+static enum fio_q_status fio_libaio_queue(struct thread_data *td,
+ struct io_u *io_u)
{
- struct libaio_data *ld = td->io_ops->data;
+ struct libaio_data *ld = td->io_ops_data;
fio_ro_check(td, io_u);
static void fio_libaio_queued(struct thread_data *td, struct io_u **io_us,
unsigned int nr)
{
- struct timeval now;
+ struct timespec now;
unsigned int i;
if (!fio_fill_issue_time(td))
static int fio_libaio_commit(struct thread_data *td)
{
- struct libaio_data *ld = td->io_ops->data;
+ struct libaio_data *ld = td->io_ops_data;
struct iocb **iocbs;
struct io_u **io_us;
- struct timeval tv;
+ struct timespec ts;
int ret, wait_start = 0;
if (!ld->queued)
break;
}
if (!wait_start) {
- fio_gettime(&tv, NULL);
+ fio_gettime(&ts, NULL);
wait_start = 1;
- } else if (mtime_since_now(&tv) > 30000) {
+ } else if (mtime_since_now(&ts) > 30000) {
log_err("fio: aio appears to be stalled, giving up\n");
break;
}
static int fio_libaio_cancel(struct thread_data *td, struct io_u *io_u)
{
- struct libaio_data *ld = td->io_ops->data;
+ struct libaio_data *ld = td->io_ops_data;
return io_cancel(ld->aio_ctx, &io_u->iocb, ld->aio_events);
}
static void fio_libaio_cleanup(struct thread_data *td)
{
- struct libaio_data *ld = td->io_ops->data;
+ struct libaio_data *ld = td->io_ops_data;
if (ld) {
- io_destroy(ld->aio_ctx);
+ /*
+ * Work-around to avoid huge RCU stalls at exit time. If we
+ * don't do this here, then it'll be torn down by exit_aio().
+ * But for that case we can parallellize the freeing, thus
+ * speeding it up a lot.
+ */
+ if (!(td->flags & TD_F_CHILD))
+ io_destroy(ld->aio_ctx);
free(ld->aio_events);
free(ld->iocbs);
free(ld->io_us);
ld->iocbs = calloc(ld->entries, sizeof(struct iocb *));
ld->io_us = calloc(ld->entries, sizeof(struct io_u *));
- td->io_ops->data = ld;
+ td->io_ops_data = ld;
return 0;
}