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 */
44 static RD_TLS int (*rd_qsort_r_cmp) (const void *, const void *, void *);
45 static RD_TLS void *rd_qsort_r_arg;
46
47 static RD_UNUSED
rd_qsort_r_trampoline(const void * a,const void * b)48 int rd_qsort_r_trampoline (const void *a, const void *b) {
49 return rd_qsort_r_cmp(a, b, rd_qsort_r_arg);
50 }
51
rd_qsort_r(void * base,size_t nmemb,size_t size,int (* compar)(const void *,const void *,void *),void * arg)52 void 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