libgo/runtime/go-map-len.c

   1 /* go-map-len.c -- return the length of a map.
   2
   3    Copyright 2009 The Go Authors. All rights reserved.
   4    Use of this source code is governed by a BSD-style
   5    license that can be found in the LICENSE file.  */
   6
   7 #include <stddef.h>
   8
   9 #include "map.h"
  10
  11 /* Return the length of a map.  This could be done inline, of course,
  12    but I'm doing it as a function for now to make it easy to chang the
  13    map structure.  */
  14
  15 size_t
  16 __go_map_len (struct __go_map *map)
  17 {
  18   if (map == NULL)
  19     return 0;
  20   return map->__element_count;
  21 }