ops = dlsym(dlhandle, engine_lib);
if (!ops)
ops = dlsym(dlhandle, "ioengine");
+
+ /*
+ * For some external engines (like C++ ones) it is not that trivial
+ * to provide a non-static ionengine structure that we can reference.
+ * Instead we call a method which allocates the required ioengine
+ * structure.
+ */
+ if (!ops) {
+ get_ioengine_t get_ioengine = dlsym(dlhandle, "get_ioengine");
+
+ if (get_ioengine)
+ get_ioengine(&ops);
+ }
+
if (!ops) {
td_vmsg(td, -1, dlerror(), "dlsym");
dlclose(dlhandle);
out:
if (r >= 0) {
/*
- * Reflect that our submitted requests were retrieved with
+ * Reflect that our submitted requests were retrieved with
* whatever OS async calls are in the underlying engine.
*/
td->io_u_in_flight -= r;
unlock_file(td, io_u->file);
+ /*
+ * If an error was seen and the io engine didn't propagate it
+ * back to 'td', do so.
+ */
+ if (io_u->error && !td->error)
+ td_verror(td, io_u->error, "td_io_queue");
+
/*
* Add warning for O_DIRECT so that users have an easier time
* spotting potentially bad alignment. If this triggers for the first
td->error = ret;
}
+ if (!ret && (td->io_ops->flags & FIO_NOIO))
+ td->flags |= TD_F_NOIO;
+
return ret;
}
if (!td->cur_depth || !td->io_u_queued)
return 0;
- io_u_mark_depth(td, td->io_u_queued);
+ io_u_mark_depth(td, td->io_u_queued);
if (td->io_ops->commit) {
ret = td->io_ops->commit(td);
if (ret)
td_verror(td, -ret, "io commit");
}
-
+
/*
* Reflect that events were submitted as async IO requests.
*/
fio_file_set_closing(f);
disk_util_dec(f->du);
- unlock_file_all(td, f);
+
+ if (td->o.file_lock_mode != FILE_LOCK_NONE)
+ unlock_file_all(td, f);
return put_file(td, f);
}
ret = os_trim(f->fd, io_u->offset, io_u->xfer_buflen);
if (!ret)
- return io_u->xfer_buflen;;
+ return io_u->xfer_buflen;
io_u->error = ret;
return 0;