Track io_u state (free or in-flight)

[fio.git] / ioengines.c

diff --git a/ioengines.c b/ioengines.c
index db333796f57c273250d60d40ed11b8a69c697412..1704418735367e92e48dfb42f5fb85e0902eed6a 100644 (file)
--- a/ioengines.c
+++ b/ioengines.c
@@ -14,6 +14,7 @@
 #include <unistd.h>
 #include <string.h>
 #include <dlfcn.h>
+#include <assert.h>
 
 #include "fio.h"
 #include "os.h"
@@ -66,11 +67,10 @@ void unregister_ioengine(struct ioengine_ops *ops)
        INIT_LIST_HEAD(&ops->list);
 }
 
-int register_ioengine(struct ioengine_ops *ops)
+void register_ioengine(struct ioengine_ops *ops)
 {
        INIT_LIST_HEAD(&ops->list);
        list_add_tail(&ops->list, &engine_list);
-       return 0;
 }
 
 static struct ioengine_ops *find_ioengine(const char *name)
@@ -189,6 +189,9 @@ int td_io_queue(struct thread_data *td, struct io_u *io_u)
 {
        int ret;
 
+       assert((io_u->flags & IO_U_F_FLIGHT) == 0);
+       io_u->flags |= IO_U_F_FLIGHT;
+
        if (td->io_ops->flags & FIO_SYNCIO)
                fio_gettime(&io_u->issue_time, NULL);