//-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~
I_ModuleService::module_ptr_type
ModuleService::load(const std::string& _moduleName)
{
// Get the logger stream
Zen::Utility::log_stream& logStream(
I_PluginManager::getSingleton().getApplication()->getLogStream()
);
// Guard this method
boost::shared_ptr<Threading::CriticalSection> pGuard(
new Threading::CriticalSection(m_pModuleGuard) );
module_name_index_type::iterator iter = m_moduleIndex.find(_moduleName);
if(iter != m_moduleIndex.end())
{
// Increment the reference count
m_modules[iter->second]->incrementReferences();
// Return the
return iter->second;
}
module_info_ptr_type pModuleInfo(new ModuleInfo);
I_ModuleManager* pModuleManager = &I_ModuleManager::getSingleton();
boost::filesystem::path modulePath;
if(!pModuleManager->findPath(_moduleName, modulePath))
{
logStream << "DEBUG: Module " << _moduleName << " not found in defined module search paths." << std::endl;
// TODO: Throw an exception with the error
return NULL;
}
pModuleInfo->setName(_moduleName);
#ifdef _WIN32
I_ModuleInfo::module_handle_type hModule = LoadLibraryA(modulePath.string().c_str());
#else
logStream << "DEBUG: dlopen " << modulePath.string().c_str() << std::endl;
I_ModuleInfo::module_handle_type hModule = dlopen(modulePath.string().c_str(), RTLD_NOW | RTLD_GLOBAL);
#endif // _WIN32
if (hModule == NULL)
{
int err = Zen::Utility::GetLastError();
logStream << "DEBUG: Error loading module " << modulePath.string()
#ifndef _WIN32
<< dlerror()
#else
<< (err == 14001 ? "probably the module has dependencies not on the path. Use depends.exe to figure it out." : "")
#endif
<< std::endl;
// TODO: Throw an exception with the error
return NULL;
#if 0
std::stringstream errorStream;
errorStream << "Unable to find plugin module: " << moduleName.str();
pPluginInfo->setError(errorStream.str());
#endif
}
pModuleInfo->setHandle(hModule);
// Get the "getModule" procedure
#if defined _WIN32
FARPROC proc = GetProcAddress(hModule, "getModule");
#else
void* proc = dlsym(hModule, "getModule");
#endif
// Check to make sure the procedure exists
if (proc)
{
// Convert the procedure type to the assumed type
#ifdef _WIN32
I_Module::proc_ptr_type pRealProc = (I_Module::proc_ptr_type)proc;
#else
I_Module::QUERY_MODULE_FUNCTION_PTR pRealProc = reinterpret_cast<I_Module::QUERY_MODULE_FUNCTION_PTR>(proc);
#endif
// Execute the procedure to get the I_Module for this module.
module_ptr_type pModule = &(pRealProc());
// Set the reference count to 1
pModuleInfo->incrementReferences();
// Put it in the index
m_moduleIndex[_moduleName] = pModule;
// Put it in the cache
m_modules[pModule] = pModuleInfo;
// And return it.
return pModule;
}
else
{
logStream << "DEBUG: Error getting procedure address in module " << modulePath.string() << " Error " << Zen::Utility::GetLastError() << std::endl;
// Not found, so return NULL
return NULL;
}
}
//-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~
I_ModuleService::pModule_type
ModuleService::load(const std::string& _moduleName)
{
boost::lock_guard<boost::mutex> guard(m_moduleMutex);
ModuleNameIdx_type::iterator iter = m_moduleIdx.find(_moduleName);
if(iter != m_moduleIdx.end())
{
// Increment the reference count
m_modules[iter->second]->incrementReferences();
// Return the
return iter->second;
}
pModuleInfo_type pModuleInfo(new ModuleInfo);
I_ModuleManager* pModuleManager = &I_ModuleManager::getSingleton();
boost::filesystem::path modulePath;
if(!pModuleManager->findPath(_moduleName, modulePath))
{
std::stringstream stream;
stream << "Module " << _moduleName << " not found in defined module search paths.";
BOOST_LOG_TRIVIAL(error) << stream.str();
throw std::exception(stream.str().c_str());
}
pModuleInfo->setName(_moduleName);
#ifdef _WIN32
I_ModuleInfo::ModuleHandle_type hModule = LoadLibraryA(modulePath.string().c_str());
#else
BOOST_LOG_TRIVIAL(info) << "dlopen " << modulePath.string().c_str();
I_ModuleInfo::ModuleHandle_type hModule = dlopen(modulePath.string().c_str(), RTLD_NOW | RTLD_GLOBAL);
#endif // _WIN32
if (hModule == NULL)
{
std::stringstream stream;
stream << "Error loading module " << modulePath.string()
#ifndef _WIN32
<< dlerror()
#else
<< ": The module is probably missing dependencies not on the path. Use depends.exe to figure it out."
#endif
;
BOOST_LOG_TRIVIAL(error) << stream.str();
throw std::exception(stream.str().c_str());
}
pModuleInfo->setHandle(hModule);
// Get the "getModule" procedure
#if defined _WIN32
FARPROC proc = GetProcAddress(hModule, "getModule");
#else
void* proc = dlsym(hModule, "getModule");
#endif
// Check to make sure the procedure exists
if (proc)
{
// Convert the procedure type to the assumed type
#ifdef _WIN32
I_Module::proc_ptr_type pRealProc = (I_Module::proc_ptr_type)proc;
#else
I_Module::QUERY_MODULE_FUNCTION_PTR pRealProc = reinterpret_cast<I_Module::QUERY_MODULE_FUNCTION_PTR>(proc);
#endif
// Execute the procedure to get the I_Module for this module.
pModule_type pModule = &(pRealProc());
// Set the reference count to 1
pModuleInfo->incrementReferences();
// Put it in the index
m_moduleIdx[_moduleName] = pModule;
// Put it in the cache
m_modules[pModule] = pModuleInfo;
// And return it.
return pModule;
}
else
{
BOOST_LOG_TRIVIAL(error) << "Error getting procedure address in module " << modulePath.string();
// Not found, so return NULL
return NULL;
}
}
