libctf/ctf-decls.h

   1 /* Declarations for missing functions.
   2    Copyright (C) 2019 Free Software Foundation, Inc.
   3
   4    This file is part of libctf.
   5
   6    libctf is free software; you can redistribute it and/or modify it under
   7    the terms of the GNU General Public License as published by the Free
   8    Software Foundation; either version 3, or (at your option) any later
   9    version.
  10
  11    This program is distributed in the hope that it will be useful, but
  12    WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  14    See the GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; see the file COPYING.  If not see
  18    <http://www.gnu.org/licenses/>.  */
  19
  20 #ifndef _CTF_DECLS_H
  21 #define _CTF_DECLS_H
  22
  23 #include "config.h"
  24
  25 #include <stddef.h>
  26 #include <stdlib.h>
  27
  28 #if HAVE_QSORT_R_ARG_LAST
  29 static inline void
  30 ctf_qsort_r (void *base, size_t nmemb, size_t size,
  31              int (*compar)(const void *, const void *, void *),
  32              void *arg)
  33 {
  34   qsort_r (base, nmemb, size, compar, arg);
  35 }
  36 #elif HAVE_QSORT_R_COMPAR_LAST
  37 struct ctf_qsort_arg
  38 {
  39   int (*compar) (const void *, const void *, void *);
  40   void *arg;
  41 };
  42
  43 static int
  44 ctf_qsort_compar_thunk (void *arg, const void *a, const void *b)
  45 {
  46   struct ctf_qsort_arg *qsort_arg = (struct ctf_qsort_arg *) arg;
  47
  48   return qsort_arg->compar (a, b, arg);
  49 }
  50
  51 static inline void
  52 ctf_qsort_r (void *base, size_t nmemb, size_t size,
  53              int (*compar)(const void *, const void *, void *),
  54              void *arg)
  55 {
  56   struct ctf_qsort_arg thunk = { compar, arg };
  57   qsort_r (base, nmemb, size, &thunk, ctf_qsort_compar_thunk);
  58 }
  59 #else
  60 void ctf_qsort_r (void *base, size_t nmemb, size_t size,
  61               int (*compar)(const void *, const void *, void *),
  62               void *arg);
  63 #endif
  64
  65 #ifndef HAVE_O_CLOEXEC
  66 # define O_CLOEXEC 0
  67 #endif
  68
  69 #undef MAX
  70 #undef MIN
  71 #define MAX(a, b) ((a) > (b) ? (a) : (b))
  72 #define MIN(a, b) ((a) < (b) ? (a) : (b))
  73
  74 #endif /* _CTF_DECLS_H */