1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __LIBPERF_INTERNAL_XYARRAY_H
3 #define __LIBPERF_INTERNAL_XYARRAY_H
4
5 #include <linux/compiler.h>
6 #include <sys/types.h>
7
8 struct xyarray {
9 size_t row_size;
10 size_t entry_size;
11 size_t entries;
12 size_t max_x;
13 size_t max_y;
14 char contents[] __aligned(8);
15 };
16
17 struct xyarray *xyarray__new(int xlen, int ylen, size_t entry_size);
18 void xyarray__delete(struct xyarray *xy);
19 void xyarray__reset(struct xyarray *xy);
20
__xyarray__entry(struct xyarray * xy,int x,int y)21 static inline void *__xyarray__entry(struct xyarray *xy, int x, int y)
22 {
23 return &xy->contents[x * xy->row_size + y * xy->entry_size];
24 }
25
xyarray__entry(struct xyarray * xy,size_t x,size_t y)26 static inline void *xyarray__entry(struct xyarray *xy, size_t x, size_t y)
27 {
28 if (x >= xy->max_x || y >= xy->max_y)
29 return NULL;
30 return __xyarray__entry(xy, x, y);
31 }
32
xyarray__max_y(struct xyarray * xy)33 static inline int xyarray__max_y(struct xyarray *xy)
34 {
35 return xy->max_y;
36 }
37
xyarray__max_x(struct xyarray * xy)38 static inline int xyarray__max_x(struct xyarray *xy)
39 {
40 return xy->max_x;
41 }
42
43 #endif /* __LIBPERF_INTERNAL_XYARRAY_H */
44