1  /* Barebones heap implementation supporting only insert and pop.
       2  
       3     Copyright (C) 2010-2023 Free Software Foundation, Inc.
       4  
       5     This program is free software: you can redistribute it and/or modify
       6     it under the terms of the GNU General Public License as published by
       7     the Free Software Foundation; either version 3 of the License, or
       8     (at your option) any later version.
       9  
      10     This program is distributed in the hope that it will be useful,
      11     but WITHOUT ANY WARRANTY; without even the implied warranty of
      12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      13     GNU General Public License for more details.
      14  
      15     You should have received a copy of the GNU General Public License
      16     along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
      17  
      18  /* Full implementation: GDSL (http://gna.org/projects/gdsl/) by Nicolas
      19     Darnis <ndarnis@free.fr>. Adapted by Gene Auyeung. */
      20  
      21  #include <stddef.h>
      22  
      23  struct heap;
      24  
      25  void heap_free (struct heap *) _GL_ATTRIBUTE_NONNULL ();
      26  
      27  struct heap *heap_alloc (int (*) (void const *, void const *), size_t)
      28    _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC (heap_free, 1)
      29    _GL_ATTRIBUTE_RETURNS_NONNULL;
      30  
      31  int heap_insert (struct heap *heap, void *item) _GL_ATTRIBUTE_NONNULL ();
      32  void *heap_remove_top (struct heap *heap) _GL_ATTRIBUTE_NONNULL ();