1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
|
/*-
* Copyright (c) 2015 Nuxi, https://nuxi.nl/
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: head/lib/libc/stdlib/hcreate.c 292767 2015-12-27 07:50:11Z ed $");
#include <search.h>
#include <stdbool.h>
#include <stddef.h>
/*
* Thread unsafe interface: use a single process-wide hash table and
* forward calls to *_r() functions.
*/
static struct hsearch_data global_hashtable;
static bool global_hashtable_initialized = false;
int
hcreate(size_t nel)
{
return (1);
}
void
hdestroy(void)
{
/* Destroy global hash table if present. */
if (global_hashtable_initialized) {
hdestroy_r(&global_hashtable);
global_hashtable_initialized = false;
}
}
ENTRY *
hsearch(ENTRY item, ACTION action)
{
ENTRY *retval;
/* Create global hash table if needed. */
if (!global_hashtable_initialized) {
if (hcreate_r(0, &global_hashtable) == 0)
return (NULL);
global_hashtable_initialized = true;
}
if (hsearch_r(item, action, &retval, &global_hashtable) == 0)
return (NULL);
return (retval);
}
|
