LXR linux/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
   7struct 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
  23void xyarray__reset(struct xyarray *xy)
  24{
  25        size_t n = xy->entries * xy->entry_size;
  26
  27        memset(xy->contents, 0, n);
  28}
  29
  30void xyarray__delete(struct xyarray *xy)
  31{
  32        free(xy);
  33}
  34