Commit | Line | Data |
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a94ea28b JA |
1 | /* |
2 | * null engine - doesn't do any transfers. Used to test fio. | |
3 | * | |
4 | */ | |
5 | #include <stdio.h> | |
6 | #include <stdlib.h> | |
7 | #include <unistd.h> | |
8 | #include <errno.h> | |
9 | #include <assert.h> | |
10 | ||
11 | #include "../fio.h" | |
12 | #include "../os.h" | |
13 | ||
36167d82 | 14 | static int fio_null_queue(struct thread_data fio_unused *td, struct io_u *io_u) |
a94ea28b | 15 | { |
a94ea28b JA |
16 | io_u->resid = 0; |
17 | io_u->error = 0; | |
36167d82 | 18 | return FIO_Q_COMPLETED; |
a94ea28b JA |
19 | } |
20 | ||
21 | static struct ioengine_ops ioengine = { | |
22 | .name = "null", | |
23 | .version = FIO_IOOPS_VERSION, | |
a94ea28b | 24 | .queue = fio_null_queue, |
4d9345ae | 25 | .flags = FIO_SYNCIO | FIO_NULLIO, |
a94ea28b JA |
26 | }; |
27 | ||
28 | static void fio_init fio_null_register(void) | |
29 | { | |
30 | register_ioengine(&ioengine); | |
31 | } | |
32 | ||
33 | static void fio_exit fio_null_unregister(void) | |
34 | { | |
35 | unregister_ioengine(&ioengine); | |
36 | } |