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/Support/Streams.h" 17 #include "llvm/System/DynamicLibrary.h" 18 #include <ostream> 19 #include <vector> 20 using namespace llvm; 21 22 static std::vector<std::string> *Plugins; 23 24 void PluginLoader::operator=(const std::string &Filename) { 25 if (!Plugins) 26 Plugins = new std::vector<std::string>(); 27 28 std::string Error; 29 if (sys::DynamicLibrary::LoadLibraryPermanently(Filename.c_str(), &Error)) { 30 cerr << "Error opening '" << Filename << "': " << Error 31 << "\n -load request ignored.\n"; 32 } else { 33 Plugins->push_back(Filename); 34 } 35 } 36 37 unsigned PluginLoader::getNumPlugins() { 38 return Plugins ? Plugins->size() : 0; 39 } 40 41 std::string &PluginLoader::getPlugin(unsigned num) { 42 assert(Plugins && num < Plugins->size() && "Asking for an out of bounds plugin"); 43 return (*Plugins)[num]; 44 } 45