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Differential D4033 Diff 10143 lib/Support/PluginLoader.cpp

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lib/Support/PluginLoader.cpp

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// //
//===----------------------------------------------------------------------===// //===----------------------------------------------------------------------===//
#define DONT_GET_PLUGIN_LOADER_OPTION #define DONT_GET_PLUGIN_LOADER_OPTION
#include "llvm/Support/PluginLoader.h" #include "llvm/Support/PluginLoader.h"
#include "llvm/Support/DynamicLibrary.h" #include "llvm/Support/DynamicLibrary.h"
#include "llvm/Support/ManagedStatic.h" #include "llvm/Support/ManagedStatic.h"
#include "llvm/Support/Mutex.h" #include "llvm/Support/Mutex.h"
#include "llvm/Support/MutexGuard.h"
#include "llvm/Support/raw_ostream.h" #include "llvm/Support/raw_ostream.h"
#include <vector> #include <vector>
using namespace llvm; using namespace llvm;
static ManagedStatic<std::vector<std::string> > Plugins; static ManagedStatic<std::vector<std::string> > Plugins;
static ManagedStatic<sys::SmartMutex<true> > PluginsLock; static ManagedStatic<sys::RecursiveDebugMutex> PluginsLock;
void PluginLoader::operator=(const std::string &Filename) { void PluginLoader::operator=(const std::string &Filename) {
sys::SmartScopedLock<true> Lock(*PluginsLock); llvm::MutexGuard Lock(*PluginsLock);
std::string Error; std::string Error;
if (sys::DynamicLibrary::LoadLibraryPermanently(Filename.c_str(), &Error)) { if (sys::DynamicLibrary::LoadLibraryPermanently(Filename.c_str(), &Error)) {
errs() << "Error opening '" << Filename << "': " << Error errs() << "Error opening '" << Filename << "': " << Error
<< "\n -load request ignored.\n"; << "\n -load request ignored.\n";
} else { } else {
Plugins->push_back(Filename); Plugins->push_back(Filename);
} }
} }
unsigned PluginLoader::getNumPlugins() { unsigned PluginLoader::getNumPlugins() {
sys::SmartScopedLock<true> Lock(*PluginsLock); llvm::MutexGuard Lock(*PluginsLock);
return Plugins.isConstructed() ? Plugins->size() : 0; return Plugins.isConstructed() ? Plugins->size() : 0;
} }
std::string &PluginLoader::getPlugin(unsigned num) { std::string &PluginLoader::getPlugin(unsigned num) {
sys::SmartScopedLock<true> Lock(*PluginsLock); llvm::MutexGuard Lock(*PluginsLock);
assert(Plugins.isConstructed() && num < Plugins->size() && assert(Plugins.isConstructed() && num < Plugins->size() &&
"Asking for an out of bounds plugin"); "Asking for an out of bounds plugin");
return (*Plugins)[num]; return (*Plugins)[num];
} }