source/module.cpp

   1 #include <ail/module.hpp>
   2
   3 #ifndef AIL_WINDOWS
   4 #include <dlfcn.h>
   5 #endif
   6
   7 namespace ail
   8 {
   9         dynamic_module::dynamic_module():
  10                 is_loaded(false)
  11         {
  12         }
  13
  14         dynamic_module::~dynamic_module()
  15         {
  16                 unload();
  17         }
  18
  19         bool dynamic_module::load(std::string const & new_path)
  20         {
  21 #ifdef AIL_WINDOWS
  22                 module_handle = ::LoadLibrary(new_path.c_str());
  23 #else
  24                 module_handle = ::dlopen(new_path.c_str(), RTLD_LAZY);
  25 #endif
  26
  27                 is_loaded = module_handle != 0;
  28
  29                 if(is_loaded)
  30                         path = new_path;
  31                 return is_loaded;
  32         }
  33
  34         void dynamic_module::unload()
  35         {
  36                 if(is_loaded)
  37                 {
  38 #ifdef AIL_WINDOWS
  39                         ::FreeLibrary(module_handle);
  40 #else
  41                         ::dlclose(module_handle);
  42 #endif
  43                         is_loaded = false;
  44                 }
  45         }
  46
  47         bool dynamic_module::get_function(std::string const & name, void * & output)
  48         {
  49                 if(!is_loaded)
  50                         return false;
  51
  52 #ifdef AIL_WINDOWS
  53                 output = ::GetProcAddress(module_handle, name.c_str());
  54                 return output != 0;
  55 #else
  56                 boost::mutex::scoped_lock scoped_lock(mutex)
  57                 output = ::dlsym(module_handle, name.c_str());
  58                 return dlerror() == 0;
  59 #endif
  60         }
  61 }