Added mutex protection to the Symtab class.

Added a new SortOrder enumeration and hooked it up to the "image dump symtab"
command so we can dump symbol tables in the original order, sorted by address, 
or sorted by name.

llvm-svn: 116049

lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp

@@ -647,6 +647,8 @@ ObjectFileELF::GetSymtab()
     Symtab *symbol_table = new Symtab(this);
     m_symtab_ap.reset(symbol_table);
 
+    Mutex::Locker locker (symbol_table->GetMutex ());
+    
     if (!(ParseSectionHeaders() && GetSectionHeaderStringTable()))
         return symbol_table;
 
@@ -658,7 +660,7 @@ ObjectFileELF::GetSymtab()
         {
             const ELFSectionHeader &symtab_section = *I;
             user_id_t section_id = SectionIndex(I);
-            ParseSymbolTable(symbol_table, symtab_section, section_id);
+            ParseSymbolTable (symbol_table, symtab_section, section_id);
         }
     }
 
@@ -685,7 +687,7 @@ ObjectFileELF::Dump(Stream *s)
         section_list->Dump(s, NULL, true);
     Symtab *symtab = GetSymtab();
     if (symtab)
-        symtab->Dump(s, NULL);
+        symtab->Dump(s, NULL, lldb::eSortOrderNone);
     s->EOL();
     DumpDependentModules(s);
     s->EOL();