tools/perf/util/xyarray.h

   1 #ifndef _PERF_XYARRAY_H_
   2 #define _PERF_XYARRAY_H_ 1
   3
   4 #include <sys/types.h>
   5
   6 struct xyarray {
   7         size_t row_size;
   8         size_t entry_size;
   9         size_t entries;
  10         size_t max_x;
  11         size_t max_y;
  12         char contents[];
  13 };
  14
  15 struct xyarray *xyarray__new(int xlen, int ylen, size_t entry_size);
  16 void xyarray__delete(struct xyarray *xy);
  17 void xyarray__reset(struct xyarray *xy);
  18
  19 static inline void *xyarray__entry(struct xyarray *xy, int x, int y)
  20 {
  21         return &xy->contents[x * xy->row_size + y * xy->entry_size];
  22 }
  23
  24 static inline int xyarray__max_y(struct xyarray *xy)
  25 {
  26         return xy->max_y;
  27 }
  28
  29 static inline int xyarray__max_x(struct xyarray *xy)
  30 {
  31         return xy->max_x;
  32 }
  33
  34 #endif /* _PERF_XYARRAY_H_ */