X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=engines%2Fnull.c;h=695afa11af0a1ebeedade04e23c5c6d7c1b1a12a;hp=7b4b217679bc1d950c02c8b3c5e8a5a03acd4ae2;hb=b2560f3ca4677e2908fc4111f4d04fae5df3b229;hpb=4d9345ae968ca92ace3dab06c25a9b73159cb329;ds=sidebyside

diff --git a/engines/null.c b/engines/null.c
index 7b4b2176..695afa11 100644
--- a/engines/null.c
+++ b/engines/null.c
@@ -11,66 +11,42 @@
 #include "../fio.h"
 #include "../os.h"
 
-struct null_data {
-	struct io_u *last_io_u;
-};
-
-static int fio_null_getevents(struct thread_data *td, int fio_unused min,
-			      int max, struct timespec fio_unused *t)
-{
-	assert(max <= 1);
-
-	if (list_empty(&td->io_u_busylist))
-		return 0;
-
-	return 1;
-}
-
-static struct io_u *fio_null_event(struct thread_data *td, int event)
+static int fio_null_queue(struct thread_data fio_unused *td, struct io_u *io_u)
 {
-	struct null_data *nd = td->io_ops->data;
-
-	assert(event == 0);
-
-	return nd->last_io_u;
-}
-
-static int fio_null_queue(struct thread_data *td, struct io_u *io_u)
-{
-	struct null_data *nd = td->io_ops->data;
-
 	io_u->resid = 0;
 	io_u->error = 0;
-	nd->last_io_u = io_u;
-	return 0;
+	return FIO_Q_COMPLETED;
 }
 
-static void fio_null_cleanup(struct thread_data *td)
+static int fio_null_setup(struct thread_data *td)
 {
-	if (td->io_ops->data) {
-		free(td->io_ops->data);
-		td->io_ops->data = NULL;
+	struct fio_file *f;
+	int i;
+
+	if (!td->total_file_size) {
+		log_err("fio: need size= set\n");
+		return 1;
 	}
-}
 
-static int fio_null_init(struct thread_data *td)
-{
-	struct null_data *nd = malloc(sizeof(*nd));
+	td->io_size = td->total_file_size;
+	td->total_io_size = td->io_size;
+
+	for_each_file(td, f, i) {
+		f->fd = dup(STDOUT_FILENO);
+		f->real_file_size = td->total_io_size / td->nr_files;
+		f->file_size = f->real_file_size;
+	}
 
-	nd->last_io_u = NULL;
-	td->io_ops->data = nd;
+	td->nr_open_files = td->nr_files;
 	return 0;
 }
 
 static struct ioengine_ops ioengine = {
 	.name		= "null",
 	.version	= FIO_IOOPS_VERSION,
-	.init		= fio_null_init,
+	.setup		= fio_null_setup,
 	.queue		= fio_null_queue,
-	.getevents	= fio_null_getevents,
-	.event		= fio_null_event,
-	.cleanup	= fio_null_cleanup,
-	.flags		= FIO_SYNCIO | FIO_NULLIO,
+	.flags		= FIO_SYNCIO | FIO_DISKLESSIO | FIO_SELFOPEN,
 };
 
 static void fio_init fio_null_register(void)