1/* Define several variants of struct epoll_event from the Linux kernel,
2   specifying various attributes that affect alignment and size.
3
4   This test was developed for systems for which int is 32 bits and
5   long long is 64 bits; it might need to be disabled for systems where
6   either of those is not true.  */
7
8#define DESC_orig "original"
9struct epoll_event_orig {
10  unsigned int events;
11  unsigned long long data;
12};
13
14#ifndef SKIP_ATTRIBUTE
15#define DESC_structmax "maximum useful struct alignment"
16struct epoll_event_structmax {
17  unsigned int events;
18  unsigned long long data;
19} __attribute__ ((aligned));
20
21
22#define DESC_struct4 "4-byte struct alignment"
23struct epoll_event_struct4 {
24  unsigned int events;
25  unsigned long long data;
26} __attribute__ ((aligned(4)));
27
28#define DESC_struct8 "8-byte struct alignment"
29struct epoll_event_struct8 {
30  unsigned int events;
31  unsigned long long data;
32} __attribute__ ((aligned(8)));
33
34#define DESC_data4 "4-byte alignment for data"
35struct epoll_event_data4 {
36  unsigned int events;
37  unsigned long long data __attribute__ ((aligned(4)));
38};
39
40#define DESC_data8 "8-byte alignment for data"
41struct epoll_event_data8 {
42  unsigned int events;
43  unsigned long long data __attribute__ ((aligned(8)));
44};
45
46#define DESC_p "packed attribute"
47struct epoll_event_p {
48  unsigned int events;
49  unsigned long long data;
50} __attribute__ ((packed));
51
52#define DESC_pstruct4 "packed attribute, 4-byte struct alignment"
53struct epoll_event_pstruct4 {
54  unsigned int events;
55  unsigned long long data;
56} __attribute__ ((packed)) __attribute__ ((aligned(4)));
57
58#define DESC_pstruct8 "packed attribute, 8-byte struct alignment"
59struct epoll_event_pstruct8 {
60  unsigned int events;
61  unsigned long long data;
62} __attribute__ ((packed)) __attribute__ ((aligned(8)));
63
64#define DESC_pdata4 "packed attribute, 4-byte alignment for data"
65struct epoll_event_pdata4 {
66  unsigned int events;
67  unsigned long long data __attribute__ ((aligned(4)));
68} __attribute__ ((packed));
69
70#define DESC_pdata8 "packed attribute, 8-byte alignment for data"
71struct epoll_event_pdata8 {
72  unsigned int events;
73  unsigned long long data __attribute__ ((aligned(8)));
74} __attribute__ ((packed));
75#endif
76