tools/perf/util/xyarray.c

   1 #include "xyarray.h"
   2 #include "util.h"
   3
   4 struct xyarray *xyarray__new(int xlen, int ylen, size_t entry_size)
   5 {
   6         size_t row_size = ylen * entry_size;
   7         struct xyarray *xy = zalloc(sizeof(*xy) + xlen * row_size);
   8
   9         if (xy != NULL) {
  10                 xy->entry_size = entry_size;
  11                 xy->row_size   = row_size;
  12                 xy->entries    = xlen * ylen;
  13         }
  14
  15         return xy;
  16 }
  17
  18 void xyarray__reset(struct xyarray *xy)
  19 {
  20         size_t n = xy->entries * xy->entry_size;
  21
  22         memset(xy->contents, 0, n);
  23 }
  24
  25 void xyarray__delete(struct xyarray *xy)
  26 {
  27         free(xy);
  28 }