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The Android Open Source Project1dc9e472009-03-03 19:28:35 -08001/* $NetBSD: heap.h,v 1.1.1.1 2004/05/20 19:49:41 christos Exp $ */
2
3/*
4 * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
5 * Copyright (c) 1997,1999 by Internet Software Consortium.
6 *
7 * Permission to use, copy, modify, and distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
10 *
11 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR
14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
17 * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 */
19
20typedef int (*heap_higher_priority_func)(void *, void *);
21typedef void (*heap_index_func)(void *, int);
22typedef void (*heap_for_each_func)(void *, void *);
23
24typedef struct heap_context {
25 int array_size;
26 int array_size_increment;
27 int heap_size;
28 void **heap;
29 heap_higher_priority_func higher_priority;
30 heap_index_func index;
31} *heap_context;
32
33#define heap_new __heap_new
34#define heap_free __heap_free
35#define heap_insert __heap_insert
36#define heap_delete __heap_delete
37#define heap_increased __heap_increased
38#define heap_decreased __heap_decreased
39#define heap_element __heap_element
40#define heap_for_each __heap_for_each
41
42heap_context heap_new(heap_higher_priority_func, heap_index_func, int);
43int heap_free(heap_context);
44int heap_insert(heap_context, void *);
45int heap_delete(heap_context, int);
46int heap_increased(heap_context, int);
47int heap_decreased(heap_context, int);
48void * heap_element(heap_context, int);
49int heap_for_each(heap_context, heap_for_each_func, void *);