#include "fio.h"
#include "os.h"
+#ifdef FIO_HAVE_LIBAIO
+
#define ev_to_iou(ev) (struct io_u *) ((unsigned long) (ev)->obj)
struct libaio_data {
struct io_event *aio_events;
};
-static int fio_libaio_sync(struct thread_data fio_unused *td,
- struct fio_file *f)
-{
- return fsync(f->fd);
-}
-
static int fio_libaio_prep(struct thread_data fio_unused *td, struct io_u *io_u)
{
struct fio_file *f = io_u->file;
if (io_u->ddir == DDIR_READ)
io_prep_pread(&io_u->iocb, f->fd, io_u->buf, io_u->buflen, io_u->offset);
- else
+ else if (io_u->ddir == DDIR_WRITE)
io_prep_pwrite(&io_u->iocb, f->fd, io_u->buf, io_u->buflen, io_u->offset);
+ else if (io_u->ddir == DDIR_SYNC)
+ io_prep_fsync(&io_u->iocb, f->fd);
+ else
+ return 1;
return 0;
}
continue;
} else if (r == -EINTR)
continue;
- else
+ else if (r != 0)
break;
} while (1);
+ if (r < 0)
+ r = -r;
+
return (int) r;
}
ret = io_submit(ld->aio_ctx, 1, &iocb);
if (ret == 1)
return 0;
- else if (ret == -EAGAIN)
+ else if (ret == -EAGAIN || !ret)
usleep(100);
else if (ret == -EINTR)
continue;
break;
} while (1);
- return (int) ret;
+ if (ret <= 0) {
+ io_u->resid = io_u->buflen;
+ io_u->error = -ret;
+ return 1;
+ }
+ return 0;
}
static int fio_libaio_cancel(struct thread_data *td, struct io_u *io_u)
memset(ld, 0, sizeof(*ld));
if (io_queue_init(td->iodepth, &ld->aio_ctx)) {
td_verror(td, errno);
+ 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));
td->io_ops->data = ld;
return 0;
}
.getevents = fio_libaio_getevents,
.event = fio_libaio_event,
.cleanup = fio_libaio_cleanup,
- .sync = fio_libaio_sync,
};
+
+#else /* FIO_HAVE_LIBAIO */
+
+/*
+ * When we have a proper configure system in place, we simply wont build
+ * and install this io engine. For now install a crippled version that
+ * just complains and fails to load.
+ */
+static int fio_libaio_init(struct thread_data fio_unused *td)
+{
+ fprintf(stderr, "fio: libaio not available\n");
+ return 1;
+}
+
+struct ioengine_ops ioengine = {
+ .name = "libaio",
+ .version = FIO_IOOPS_VERSION,
+ .init = fio_libaio_init,
+};
+
+#endif