forked from OSchip/llvm-project
79 lines
2.4 KiB
C++
79 lines
2.4 KiB
C++
//===--- Plugin.cpp - The LLVM Compiler Driver ------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open
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// Source License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// Plugin support.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/CompilerDriver/Plugin.h"
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#include "llvm/Support/ManagedStatic.h"
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#include "llvm/System/Mutex.h"
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#include <algorithm>
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#include <vector>
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namespace {
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// Registry::Add<> does not do lifetime management (probably issues
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// with static constructor/destructor ordering), so we have to
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// implement it here.
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//
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// All this static registration/life-before-main model seems
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// unnecessary convoluted to me.
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static bool pluginListInitialized = false;
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typedef std::vector<const llvmc::BasePlugin*> PluginList;
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static PluginList Plugins;
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static llvm::ManagedStatic<llvm::sys::SmartMutex<true> > PluginMutex;
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struct ByPriority {
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bool operator()(const llvmc::BasePlugin* lhs,
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const llvmc::BasePlugin* rhs) {
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return lhs->Priority() < rhs->Priority();
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}
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};
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}
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namespace llvmc {
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PluginLoader::PluginLoader() {
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llvm::sys::SmartScopedLock<true> Lock(*PluginMutex);
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if (!pluginListInitialized) {
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for (PluginRegistry::iterator B = PluginRegistry::begin(),
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E = PluginRegistry::end(); B != E; ++B)
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Plugins.push_back(B->instantiate());
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std::sort(Plugins.begin(), Plugins.end(), ByPriority());
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}
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pluginListInitialized = true;
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}
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PluginLoader::~PluginLoader() {
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llvm::sys::SmartScopedLock<true> Lock(*PluginMutex);
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if (pluginListInitialized) {
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for (PluginList::iterator B = Plugins.begin(), E = Plugins.end();
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B != E; ++B)
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delete (*B);
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}
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pluginListInitialized = false;
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}
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void PluginLoader::RunInitialization(LanguageMap& langMap,
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CompilationGraph& graph) const
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{
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llvm::sys::SmartScopedLock<true> Lock(*PluginMutex);
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for (PluginList::iterator B = Plugins.begin(), E = Plugins.end();
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B != E; ++B) {
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const BasePlugin* BP = *B;
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BP->PreprocessOptions();
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BP->PopulateLanguageMap(langMap);
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BP->PopulateCompilationGraph(graph);
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}
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}
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}
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