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 ();
33