LXR linux/tools/lib/perf/include/internal/xyarray.h

   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