jnlib/dynload.h

   1 /* dynload.h - Wrapper functions for run-time dynamic loading
   2  *      Copyright (C) 2003 Free Software Foundation, Inc.
   3  *
   4  * This file is part of JNLIB.
   5  *
   6  * JNLIB is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU Lesser General Public License as
   8  * published by the Free Software Foundation; either version 3 of
   9  * the License, or (at your option) any later version.
  10  *
  11  * JNLIB 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.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this program; if not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #ifndef LIBJNLIB_DYNLOAD_H
  21 #define LIBJNLIB_DYNLOAD_H
  22
  23 #ifndef __MINGW32__
  24 # include <dlfcn.h>
  25 #else
  26 # include <windows.h>
  27
  28 # define RTLD_LAZY 0
  29
  30 static inline void *
  31 dlopen (const char * name, int flag)
  32 {
  33   void * hd = LoadLibrary (name);
  34   (void)flag;
  35   return hd;
  36 }
  37
  38 static inline void *
  39 dlsym (void *hd, const char *sym)
  40 {
  41   if (hd && sym)
  42     {
  43       void * fnc = GetProcAddress (hd, sym);
  44       if (!fnc)
  45         return NULL;
  46       return fnc;
  47     }
  48   return NULL;
  49 }
  50
  51
  52 static inline const char *
  53 dlerror (void)
  54 {
  55   static char buf[32];
  56   sprintf (buf, "ec=%lu", GetLastError ());
  57   return buf;
  58 }
  59
  60
  61 static inline int
  62 dlclose (void * hd)
  63 {
  64   if (hd)
  65     {
  66       CloseHandle (hd);
  67       return 0;
  68     }
  69   return -1;
  70 }
  71 # endif /*__MINGW32__*/
  72 #endif /*LIBJNLIB_DYNLOAD_H*/