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      1 /* Platform independent shared object routines for GDB.
      2 
      3    Copyright (C) 2011-2024 Free Software Foundation, Inc.
      4 
      5    This file is part of GDB.
      6 
      7    This program is free software; you can redistribute it and/or modify
      8    it under the terms of the GNU General Public License as published by
      9    the Free Software Foundation; either version 3 of the License, or
     10    (at your option) any later version.
     11 
     12    This program is distributed in the hope that it will be useful,
     13    but WITHOUT ANY WARRANTY; without even the implied warranty of
     14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     15    GNU General Public License for more details.
     16 
     17    You should have received a copy of the GNU General Public License
     18    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
     19 
     20 #ifndef GDB_DLFCN_H
     21 #define GDB_DLFCN_H
     22 
     23 /* A deleter that closes an open dynamic library.  */
     24 
     25 struct dlclose_deleter
     26 {
     27   void operator() (void *handle) const;
     28 };
     29 
     30 /* A unique pointer that points to a dynamic library.  */
     31 
     32 typedef std::unique_ptr<void, dlclose_deleter> gdb_dlhandle_up;
     33 
     34 /* Load the dynamic library file named FILENAME, and return a handle
     35    for that dynamic library.  Throw an error if the loading fails for
     36    any reason.  */
     37 
     38 gdb_dlhandle_up gdb_dlopen (const char *filename);
     39 
     40 /* Return the address of the symbol named SYMBOL inside the shared
     41    library whose handle is HANDLE.  Return NULL when the symbol could
     42    not be found.  */
     43 
     44 void *gdb_dlsym (const gdb_dlhandle_up &handle, const char *symbol);
     45 
     46 /* Return non-zero if the dynamic library functions are available on
     47    this platform.  */
     48 
     49 int is_dl_available(void);
     50 
     51 #endif /* GDB_DLFCN_H */
     52