Convert lldb::ModuleSP to use an instrusive ref counted pointer.

We had some cases where getting the shared pointer for a module from
the global module list was causing a performance issue when debugging
with DWARF in .o files. Now that the module uses intrusive ref counts,
we can easily convert any pointer to a shared pointer.

llvm-svn: 139983

lldb/source/Utility/SharingPtr.cpp

@@ -14,40 +14,42 @@ namespace lldb_private {
 namespace imp
 {
 
-template <class T>
-inline T
-increment(T& t)
-{
-    return __sync_add_and_fetch(&t, 1);
-}
-
-template <class T>
-inline T
-decrement(T& t)
-{
-    return __sync_add_and_fetch(&t, -1);
-}
-
-shared_count::~shared_count()
-{
-}
-
-void
-shared_count::add_shared()
-{
-    increment(shared_owners_);
-}
-
-void
-shared_count::release_shared()
-{
-    if (decrement(shared_owners_) == -1)
+    template <class T>
+    inline T
+    increment(T& t)
     {
-        on_zero_shared();
-        delete this;
+        return __sync_add_and_fetch(&t, 1);
+    }
+
+    template <class T>
+    inline T
+    decrement(T& t)
+    {
+        return __sync_add_and_fetch(&t, -1);
+    }
+
+    shared_count::~shared_count()
+    {
+    }
+
+    void
+    shared_count::add_shared()
+    {
+        increment(shared_owners_);
+    }
+
+    void
+    shared_count::release_shared()
+    {
+        if (decrement(shared_owners_) == -1)
+        {
+            on_zero_shared();
+            delete this;
+        }
     }
-}
 
 } // imp
 
+
 } // namespace lldb
+