1/*
2* librdkafka - Apache Kafka C library
3*
4* Copyright (c) 2016 Magnus Edenhill
5* All rights reserved.
6*
7* Redistribution and use in source and binary forms, with or without
8* modification, are permitted provided that the following conditions are met:
9*
10* 1. Redistributions of source code must retain the above copyright notice,
11* this list of conditions and the following disclaimer.
12* 2. Redistributions in binary form must reproduce the above copyright notice,
13* this list of conditions and the following disclaimer in the documentation
14* and/or other materials provided with the distribution.
15*
16* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
20* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26* POSSIBILITY OF SUCH DAMAGE.
27*/
28
29/**
30 * System portability
31 */
32
33#include "rd.h"
34
35
36#include <stdlib.h>
37
38/**
39 * qsort_r substitute
40 * This nicely explains why we wont bother with the native implementation
41 * on Win32 (qsort_s), OSX/FreeBSD (qsort_r with diff args):
42 * http://forum.theorex.tech/t/different-declarations-of-qsort-r-on-mac-and-linux/93/2
43 */
44static RD_TLS int (*rd_qsort_r_cmp) (const void *, const void *, void *);
45static RD_TLS void *rd_qsort_r_arg;
46
47static RD_UNUSED
48int rd_qsort_r_trampoline (const void *a, const void *b) {
49 return rd_qsort_r_cmp(a, b, rd_qsort_r_arg);
50}
51
52void rd_qsort_r (void *base, size_t nmemb, size_t size,
53 int (*compar)(const void *, const void *, void *),
54 void *arg) {
55 rd_qsort_r_cmp = compar;
56 rd_qsort_r_arg = arg;
57 qsort(base, nmemb, size, rd_qsort_r_trampoline);
58 rd_qsort_r_cmp = NULL;
59 rd_qsort_r_arg = NULL;
60}
61