Changeset e491159 for src/Common

Timestamp:

Aug 31, 2016, 11:20:03 AM (9 years ago)

Author:

Thierry Delisle <tdelisle@…>

Branches:

ADT, aaron-thesis, arm-eh, ast-experimental, cleanup-dtors, ctor, deferred_resn, demangler, enum, forall-pointer-decay, jacob/cs343-translation, jenkins-sandbox, master, new-ast, new-ast-unique-expr, new-env, no_list, persistent-indexer, pthread-emulation, qualifiedEnum, resolv-new, with_gc

Children:

1f75e2d

Parents:

bda58ad

Message:

Moved ScopedMap to Common folder

Location:

src/Common

Files:

• ScopedMap.h (added)
• utility.h (modified) (2 diffs)

src/Common/utility.h

@@ -17 +17 @@
 #define _UTILITY_H
 
+#include <cctype>
 #include <iostream>
+#include <iterator>
+#include <list>
+#include <memory>
 #include <sstream>
-#include <iterator>
 #include <string>
-#include <cctype>
-#include <list>
 
 template< typename T >
@@ -246 +247 @@
 }
 
+template< typename ThisType >
+class RefCountSingleton {
+  public:
+        static std::shared_ptr<ThisType> get() {
+                if( global_instance.expired() ) {
+                        std::shared_ptr<ThisType> new_instance = std::make_shared<ThisType>();
+                        global_instance = new_instance;
+                        return std::move(new_instance);
+                }
+                return global_instance.lock();
+        }
+  private:
+        static std::weak_ptr<ThisType> global_instance;
+};
+
 #endif // _UTILITY_H