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