| /* Reentrant sort function. |
| |
| Copyright 2014-2020 Free Software Foundation, Inc. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License along |
| with this program; if not, see <https://www.gnu.org/licenses/>. */ |
| |
| /* Written by Paul Eggert. */ |
| |
| #include <config.h> |
| |
| #include <stdlib.h> |
| |
| /* This file is compiled only when the system has a qsort_r that needs |
| to be replaced because it has the BSD signature rather than the GNU |
| signature. */ |
| |
| struct thunk |
| { |
| int (*cmp) (void const *, void const *, void *); |
| void *arg; |
| }; |
| |
| static int |
| thunk_cmp (void *thunk, void const *a, void const *b) |
| { |
| struct thunk *th = thunk; |
| return th->cmp (a, b, th->arg); |
| } |
| |
| void |
| qsort_r (void *base, size_t nmemb, size_t size, |
| int (*cmp) (void const *, void const *, void *), |
| void *arg) |
| { |
| # undef qsort_r |
| struct thunk thunk; |
| thunk.cmp = cmp; |
| thunk.arg = arg; |
| qsort_r (base, nmemb, size, &thunk, thunk_cmp); |
| } |