tools/perf/util/xyarray.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 #include "xyarray.h"
   3 #include <stdlib.h>
   4 #include <string.h>
   5 #include <linux/zalloc.h>
   6
   7 struct xyarray *xyarray__new(int xlen, int ylen, size_t entry_size)
   8 {
   9         size_t row_size = ylen * entry_size;
  10         struct xyarray *xy = zalloc(sizeof(*xy) + xlen * row_size);
  11
  12         if (xy != NULL) {
  13                 xy->entry_size = entry_size;
  14                 xy->row_size   = row_size;
  15                 xy->entries    = xlen * ylen;
  16                 xy->max_x      = xlen;
  17                 xy->max_y      = ylen;
  18         }
  19
  20         return xy;
  21 }
  22
  23 void xyarray__reset(struct xyarray *xy)
  24 {
  25         size_t n = xy->entries * xy->entry_size;
  26
  27         memset(xy->contents, 0, n);
  28 }
  29
  30 void xyarray__delete(struct xyarray *xy)
  31 {
  32         free(xy);
  33 }