1 //===-- PluginLoader.cpp - Implement -load command line option ------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file was developed by the LLVM research group and is distributed under 6 // the University of Illinois Open Source License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This file implements the -load <plugin> command line option handler. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #define DONT_GET_PLUGIN_LOADER_OPTION 15 #include "llvm/Support/PluginLoader.h" 16 #include "llvm/System/DynamicLibrary.h" 17 #include <iostream> 18 #include <vector> 19 20 using namespace llvm; 21 22 std::vector<std::string> plugins; 23 24 void PluginLoader::operator=(const std::string &Filename) { 25 std::string ErrorMessage; 26 try { 27 sys::DynamicLibrary::LoadLibraryPermanently(Filename.c_str()); 28 plugins.push_back(Filename); 29 } catch (const std::string& errmsg) { 30 if (errmsg.empty()) { 31 ErrorMessage = "Unknown"; 32 } else { 33 ErrorMessage = errmsg; 34 } 35 } 36 if (!ErrorMessage.empty()) 37 std::cerr << "Error opening '" << Filename << "': " << ErrorMessage 38 << "\n -load request ignored.\n"; 39 } 40 41 unsigned PluginLoader::getNumPlugins() 42 { 43 return plugins.size(); 44 } 45 46 std::string& PluginLoader::getPlugin(unsigned num) 47 { 48 assert(num < plugins.size() && "Asking for an out of bounds plugin"); 49 return plugins[num]; 50 } 51