1 //===-- PluginLoader.cpp - Implement -load command line option ------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // 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/ManagedStatic.h" 16 #include "llvm/Support/PluginLoader.h" 17 #include "llvm/Support/Streams.h" 18 #include "llvm/System/DynamicLibrary.h" 19 #include "llvm/System/Mutex.h" 20 #include <ostream> 21 #include <vector> 22 using namespace llvm; 23 24 static ManagedStatic<std::vector<std::string> > Plugins; 25 static ManagedStatic<sys::SmartMutex<true> > PluginsLock; 26 27 void PluginLoader::operator=(const std::string &Filename) { 28 sys::SmartScopedLock<true> Lock(*PluginsLock); 29 std::string Error; 30 if (sys::DynamicLibrary::LoadLibraryPermanently(Filename.c_str(), &Error)) { 31 cerr << "Error opening '" << Filename << "': " << Error 32 << "\n -load request ignored.\n"; 33 } else { 34 Plugins->push_back(Filename); 35 } 36 } 37 38 unsigned PluginLoader::getNumPlugins() { 39 sys::SmartScopedLock<true> Lock(*PluginsLock); 40 return Plugins.isConstructed() ? Plugins->size() : 0; 41 } 42 43 std::string &PluginLoader::getPlugin(unsigned num) { 44 sys::SmartScopedLock<true> Lock(*PluginsLock); 45 assert(Plugins.isConstructed() && num < Plugins->size() && 46 "Asking for an out of bounds plugin"); 47 return (*Plugins)[num]; 48 } 49