1*7330f729Sjoerg //===-- PluginLoader.cpp - Implement -load command line option ------------===// 2*7330f729Sjoerg // 3*7330f729Sjoerg // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4*7330f729Sjoerg // See https://llvm.org/LICENSE.txt for license information. 5*7330f729Sjoerg // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6*7330f729Sjoerg // 7*7330f729Sjoerg //===----------------------------------------------------------------------===// 8*7330f729Sjoerg // 9*7330f729Sjoerg // This file implements the -load <plugin> command line option handler. 10*7330f729Sjoerg // 11*7330f729Sjoerg //===----------------------------------------------------------------------===// 12*7330f729Sjoerg 13*7330f729Sjoerg #define DONT_GET_PLUGIN_LOADER_OPTION 14*7330f729Sjoerg #include "llvm/Support/PluginLoader.h" 15*7330f729Sjoerg #include "llvm/Support/DynamicLibrary.h" 16*7330f729Sjoerg #include "llvm/Support/ManagedStatic.h" 17*7330f729Sjoerg #include "llvm/Support/Mutex.h" 18*7330f729Sjoerg #include "llvm/Support/raw_ostream.h" 19*7330f729Sjoerg #include <vector> 20*7330f729Sjoerg using namespace llvm; 21*7330f729Sjoerg 22*7330f729Sjoerg static ManagedStatic<std::vector<std::string> > Plugins; 23*7330f729Sjoerg static ManagedStatic<sys::SmartMutex<true> > PluginsLock; 24*7330f729Sjoerg operator =(const std::string & Filename)25*7330f729Sjoergvoid PluginLoader::operator=(const std::string &Filename) { 26*7330f729Sjoerg sys::SmartScopedLock<true> Lock(*PluginsLock); 27*7330f729Sjoerg std::string Error; 28*7330f729Sjoerg if (sys::DynamicLibrary::LoadLibraryPermanently(Filename.c_str(), &Error)) { 29*7330f729Sjoerg errs() << "Error opening '" << Filename << "': " << Error 30*7330f729Sjoerg << "\n -load request ignored.\n"; 31*7330f729Sjoerg } else { 32*7330f729Sjoerg Plugins->push_back(Filename); 33*7330f729Sjoerg } 34*7330f729Sjoerg } 35*7330f729Sjoerg getNumPlugins()36*7330f729Sjoergunsigned PluginLoader::getNumPlugins() { 37*7330f729Sjoerg sys::SmartScopedLock<true> Lock(*PluginsLock); 38*7330f729Sjoerg return Plugins.isConstructed() ? Plugins->size() : 0; 39*7330f729Sjoerg } 40*7330f729Sjoerg getPlugin(unsigned num)41*7330f729Sjoergstd::string &PluginLoader::getPlugin(unsigned num) { 42*7330f729Sjoerg sys::SmartScopedLock<true> Lock(*PluginsLock); 43*7330f729Sjoerg assert(Plugins.isConstructed() && num < Plugins->size() && 44*7330f729Sjoerg "Asking for an out of bounds plugin"); 45*7330f729Sjoerg return (*Plugins)[num]; 46*7330f729Sjoerg } 47