X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FSupport%2FPluginLoader.cpp;h=36caecffeede769e1d5012b51101f6bcddee61ac;hb=4153982375811da8ffe8d8cc45e09d44c6f40642;hp=3c9de89a4265d2b8ea513b768496a16c20471c7f;hpb=1a097e30d39e60303ae2b19f7a56e813f3e3c18e;p=oota-llvm.git

diff --git a/lib/Support/PluginLoader.cpp b/lib/Support/PluginLoader.cpp
index 3c9de89a426..36caecffeed 100644
--- a/lib/Support/PluginLoader.cpp
+++ b/lib/Support/PluginLoader.cpp
@@ -2,8 +2,8 @@
 //
 //                     The LLVM Compiler Infrastructure
 //
-// This file was developed by the LLVM research group and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
@@ -12,33 +12,36 @@
 //===----------------------------------------------------------------------===//
 
 #define DONT_GET_PLUGIN_LOADER_OPTION
+#include "llvm/Support/ManagedStatic.h"
 #include "llvm/Support/PluginLoader.h"
-#include "llvm/Support/Streams.h"
+#include "llvm/Support/raw_ostream.h"
 #include "llvm/System/DynamicLibrary.h"
-#include <ostream>
+#include "llvm/System/Mutex.h"
 #include <vector>
 using namespace llvm;
 
-static std::vector<std::string> *Plugins;
+static ManagedStatic<std::vector<std::string> > Plugins;
+static ManagedStatic<sys::SmartMutex<true> > PluginsLock;
 
 void PluginLoader::operator=(const std::string &Filename) {
-  if (!Plugins)
-    Plugins = new std::vector<std::string>();
-
+  sys::SmartScopedLock<true> Lock(*PluginsLock);
   std::string Error;
   if (sys::DynamicLibrary::LoadLibraryPermanently(Filename.c_str(), &Error)) {
-    cerr << "Error opening '" << Filename << "': " << Error
-         << "\n  -load request ignored.\n";
+    errs() << "Error opening '" << Filename << "': " << Error
+           << "\n  -load request ignored.\n";
   } else {
     Plugins->push_back(Filename);
   }
 }
 
 unsigned PluginLoader::getNumPlugins() {
-  return Plugins ? Plugins->size() : 0;
+  sys::SmartScopedLock<true> Lock(*PluginsLock);
+  return Plugins.isConstructed() ? Plugins->size() : 0;
 }
 
 std::string &PluginLoader::getPlugin(unsigned num) {
-  assert(Plugins && num < Plugins->size() && "Asking for an out of bounds plugin");
+  sys::SmartScopedLock<true> Lock(*PluginsLock);
+  assert(Plugins.isConstructed() && num < Plugins->size() &&
+         "Asking for an out of bounds plugin");
   return (*Plugins)[num];
 }