include/dynamic.h

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev.
   6  *                       E-mail:
   7  *                <brain@chatspike.net>
   8  *                <Craig@chatspike.net>
   9  *
  10  * Written by Craig Edwards, Craig McLure, and others.
  11  * This program is free but copyrighted software; see
  12  *            the file COPYING for details.
  13  *
  14  * ---------------------------------------------------
  15  */
  16
  17
  18 #ifndef __DLL_H
  19 #define __DLL_H
  20
  21 typedef void * (initfunc) (void);
  22
  23 #include "inspircd_config.h"
  24
  25 class DLLManager
  26 {
  27  public:
  28         DLLManager(const char *fname);
  29         virtual ~DLLManager();
  30
  31
  32 #ifdef STATIC_LINK
  33         bool GetSymbol( initfunc* &v, const char *sym_name );
  34 #else
  35         bool GetSymbol( void **, const char *sym_name );
  36 #endif
  37
  38         char* LastError()
  39         {
  40                  return err;
  41         }
  42
  43  protected:
  44         void *h;
  45         char *err;
  46 #ifdef STATIC_LINK
  47         char staticname[1024];
  48 #endif
  49 };
  50
  51
  52 class DLLFactoryBase : public DLLManager
  53 {
  54  public:
  55         DLLFactoryBase(const char *fname, const char *func_name = 0);
  56         virtual ~DLLFactoryBase();
  57 #ifdef STATIC_LINK
  58         initfunc *factory_func;
  59 #else
  60         void * (*factory_func)(void);
  61 #endif
  62 };
  63
  64 template <class T> class DLLFactory : public DLLFactoryBase
  65 {
  66  public:
  67         DLLFactory(const char *fname, const char *func_name=0) : DLLFactoryBase(fname,func_name)
  68         {
  69                 if (factory_func)
  70                         factory = reinterpret_cast<T*>(factory_func());
  71                 else
  72                         factory = reinterpret_cast<T*>(-1);
  73         }
  74
  75         ~DLLFactory()
  76         {
  77                 if (factory)
  78                         delete factory;
  79         }
  80
  81         T *factory;
  82 };
  83
  84 #endif