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
8struct 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
17struct xyarray *xyarray__new(int xlen, int ylen, size_t entry_size);
18void xyarray__delete(struct xyarray *xy);
19void xyarray__reset(struct xyarray *xy);
20
21static 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
26static 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
33static inline int xyarray__max_y(struct xyarray *xy)
34{
35	return xy->max_y;
36}
37
38static inline int xyarray__max_x(struct xyarray *xy)
39{
40	return xy->max_x;
41}
42
43#endif /* __LIBPERF_INTERNAL_XYARRAY_H */
44