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                 xy->max_x      = xlen;
  16                 xy->max_y      = ylen;
  17         }
  18
  19         return xy;
  20 }
  21
  22 void xyarray__reset(struct xyarray *xy)
  23 {
  24         size_t n = xy->entries * xy->entry_size;
  25
  26         memset(xy->contents, 0, n);
  27 }
  28
  29 void xyarray__delete(struct xyarray *xy)
  30 {
  31         free(xy);
  32 }