/*
- * read/write() engine that uses syslet to be async
+ * syslet engine
+ *
+ * IO engine that does regular pread(2)/pwrite(2) to transfer data, but
+ * with syslets to make the execution async.
*
*/
#include <stdio.h>
#include <unistd.h>
#include <errno.h>
#include <assert.h>
+#include <asm/unistd.h>
#include "../fio.h"
#include "../os.h"
#ifdef FIO_HAVE_SYSLET
+#ifdef __NR_pread64
+#define __NR_fio_pread __NR_pread64
+#define __NR_fio_pwrite __NR_pwrite64
+#else
+#define __NR_fio_pread __NR_pread
+#define __NR_fio_pwrite __NR_pwrite
+#endif
+
struct syslet_data {
struct io_u **events;
unsigned int nr_events;
io_u = atom->private;
ret = *atom->ret_ptr;
- if (ret > 0)
+ if (ret >= 0)
io_u->resid = io_u->xfer_buflen - ret;
else if (ret < 0)
io_u->error = ret;
- assert(sd->nr_events < td->iodepth);
+ assert(sd->nr_events < td->o.iodepth);
sd->events[sd->nr_events++] = io_u;
if (atom == last)
break;
sd->ring[sd->ahu.user_ring_idx] = NULL;
- if (++sd->ahu.user_ring_idx == td->iodepth)
+ if (++sd->ahu.user_ring_idx == td->o.iodepth)
sd->ahu.user_ring_idx = 0;
fio_syslet_complete_atom(td, atom);
* prepare rw
*/
if (io_u->ddir == DDIR_READ)
- nr = __NR_pread64;
+ nr = __NR_fio_pread;
else
- nr = __NR_pwrite64;
+ nr = __NR_fio_pwrite;
init_atom(&io_u->req.atom, nr, &f->fd, &io_u->xfer_buf,
&io_u->xfer_buflen, &io_u->offset, &io_u->req.ret, 0, io_u);
sd = malloc(sizeof(*sd));
memset(sd, 0, sizeof(*sd));
- sd->events = malloc(sizeof(struct io_u *) * td->iodepth);
- memset(sd->events, 0, sizeof(struct io_u *) * td->iodepth);
+ sd->events = malloc(sizeof(struct io_u *) * td->o.iodepth);
+ memset(sd->events, 0, sizeof(struct io_u *) * td->o.iodepth);
/*
* This will handily fail for kernels where syslet isn't available
*/
- if (async_head_init(sd, td->iodepth)) {
+ if (async_head_init(sd, td->o.iodepth)) {
free(sd->events);
free(sd);
return 1;