tools/perf/util/xyarray.c

   1 #include "xyarray.h"
   2 #include "util.h"
   3 #include <stdlib.h>
   4 #include <string.h>
   5
   6 struct xyarray *xyarray__new(int xlen, int ylen, size_t entry_size)
   7 {
   8         size_t row_size = ylen * entry_size;
   9         struct xyarray *xy = zalloc(sizeof(*xy) + xlen * row_size);
  10
  11         if (xy != NULL) {
  12                 xy->entry_size = entry_size;
  13                 xy->row_size   = row_size;
  14                 xy->entries    = xlen * ylen;
  15         }
  16
  17         return xy;
  18 }
  19
  20 void xyarray__reset(struct xyarray *xy)
  21 {
  22         size_t n = xy->entries * xy->entry_size;
  23
  24         memset(xy->contents, 0, n);
  25 }
  26
  27 void xyarray__delete(struct xyarray *xy)
  28 {
  29         free(xy);
  30 }