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Guard the plugin loader.

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llvm-svn: 73925
This commit is contained in:
Owen Anderson 2009-06-23 00:02:39 +00:00
parent f00516f54d
commit 7bce26b269
1 changed files with 5 additions and 0 deletions
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5
lib/Support/PluginLoader.cpp
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@ -16,13 +16,16 @@
#include "llvm/Support/PluginLoader.h"
#include "llvm/Support/Streams.h"
#include "llvm/System/DynamicLibrary.h"
#include "llvm/System/Mutex.h"
#include <ostream>
#include <vector>
using namespace llvm;
static ManagedStatic<std::vector<std::string> > Plugins;
static ManagedStatic<sys::SmartMutex<true> > PluginsLock;
void PluginLoader::operator=(const std::string &Filename) {
sys::SmartScopedLock<true> Lock(&*PluginsLock);
std::string Error;
if (sys::DynamicLibrary::LoadLibraryPermanently(Filename.c_str(), &Error)) {
cerr << "Error opening '" << Filename << "': " << Error
@ -33,10 +36,12 @@ void PluginLoader::operator=(const std::string &Filename) {
}
unsigned PluginLoader::getNumPlugins() {
sys::SmartScopedLock<true> Lock(&*PluginsLock);
return Plugins.isConstructed() ? Plugins->size() : 0;
}
std::string &PluginLoader::getPlugin(unsigned num) {
sys::SmartScopedLock<true> Lock(&*PluginsLock);
assert(Plugins.isConstructed() && num < Plugins->size() &&
"Asking for an out of bounds plugin");
return (*Plugins)[num];