remove dead code, noone creates instances of "DynamicLibrary", so the ctor and dtor are dead.

llvm-svn: 74926

llvm/include/llvm/System/DynamicLibrary.h

@@ -14,7 +14,6 @@
 #ifndef LLVM_SYSTEM_DYNAMIC_LIBRARY_H
 #define LLVM_SYSTEM_DYNAMIC_LIBRARY_H
 
-#include "llvm/System/Path.h"
 #include <string>
 
 namespace llvm {
@@ -30,24 +29,7 @@ namespace sys {
   /// but rather the main program itself, useful on Windows where the main
   /// executable cannot be searched.
   class DynamicLibrary {
-    /// @name Constructors
-    /// @{
-    public:
-      /// Construct a DynamicLibrary that represents the currently executing
-      /// program. The program must have been linked with -export-dynamic or
-      /// -dlopen self for this to work. 
-      /// @throws std::string indicating why the program couldn't be opened.
-      /// @brief Open program as dynamic library.
-      DynamicLibrary();
-
-      /// After destruction, the symbols of the library will no longer be
-      /// available to the program. 
-      /// @brief Closes the DynamicLibrary
-      ~DynamicLibrary();
-
-    /// @}
-    /// @name Functions
-    /// @{
+    DynamicLibrary(); // DO NOT IMPLEMENT
   public:
     /// This function allows a library to be loaded without instantiating a
     /// DynamicLibrary object. Consequently, it is marked as being permanent
@@ -81,15 +63,6 @@ namespace sys {
     static void AddSymbol(const std::string &symbolName, void *symbolValue) {
       AddSymbol(symbolName.c_str(), symbolValue);
     }
-
-    /// @}
-    /// @name Implementation
-    /// @{
-    protected:
-      void* handle;  // Opaque handle for information about the library
-      DynamicLibrary(const DynamicLibrary&); ///< Do not implement
-      DynamicLibrary& operator=(const DynamicLibrary&); ///< Do not implement
-    /// @}
   };
 
 } // End sys namespace

llvm/lib/System/DynamicLibrary.cpp

@@ -18,6 +18,7 @@
 #include <cstdio>
 #include <cstring>
 #include <map>
+#include <vector>
 
 // Collection of symbol name/value pairs to be searched prior to any libraries.
 static std::map<std::string, void*> symbols;
@@ -47,16 +48,6 @@ using namespace llvm::sys;
 
 static std::vector<void *> OpenedHandles;
 
-DynamicLibrary::DynamicLibrary() {}
-
-DynamicLibrary::~DynamicLibrary() {
-  SmartScopedWriter<true> Writer(&SymbolsLock);
-  while(!OpenedHandles.empty()) {
-    void *H = OpenedHandles.back();
-    OpenedHandles.pop_back(); 
-    dlclose(H);
-  }
-}
 
 bool DynamicLibrary::LoadLibraryPermanently(const char *Filename,
                                             std::string *ErrMsg) {