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/raw_ostream.h" 18 #include "llvm/Support/DynamicLibrary.h" 19 #include "llvm/Support/Mutex.h" 20 #include <vector> 21 using namespace llvm; 22 23 static ManagedStatic<std::vector<std::string> > Plugins; 24 static ManagedStatic<sys::SmartMutex<true> > PluginsLock; 25 26 void PluginLoader::operator=(const std::string &Filename) { 27 sys::SmartScopedLock<true> Lock(*PluginsLock); 28 std::string Error; 29 if (sys::DynamicLibrary::LoadLibraryPermanently(Filename.c_str(), &Error)) { 30 errs() << "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 sys::SmartScopedLock<true> Lock(*PluginsLock); 39 return Plugins.isConstructed() ? Plugins->size() : 0; 40 } 41 42 std::string &PluginLoader::getPlugin(unsigned num) { 43 sys::SmartScopedLock<true> Lock(*PluginsLock); 44 assert(Plugins.isConstructed() && num < Plugins->size() && 45 "Asking for an out of bounds plugin"); 46 return (*Plugins)[num]; 47 } 48
