Remove root_rcp

include/rcp.h

@@ -33,16 +33,17 @@ class rcp
 private:
     T * ptr = nullptr;
 
-    void init_ptr(T * p)
-    {
-        ptr = p;
-    }
-
-    friend T;
-
 public:
     rcp() = default;
 
+    rcp(T * p) : ptr(p)
+    {
+        if (p)
+        {
+            p->rcp_inc();
+        }
+    }
+
     rcp(const rcp & other) : ptr(other.ptr)
     {
         if (ptr)
@@ -101,13 +102,6 @@ private:
     mutable std::atomic<int> ref_count{0};
 
 protected:
-    mutable rcp<root> root_rcp;
-
-    root()
-    {
-        root_rcp.init_ptr(this);
-    }
-
     virtual ~root() = default;
 
 public:
@@ -120,7 +114,6 @@ public:
     {
         if (ref_count.fetch_sub(1, std::memory_order_acq_rel) == 1)
         {
-            root_rcp.init_ptr(nullptr);
             delete this;
         }
     }
@@ -129,7 +122,7 @@ public:
 #define rcp_managed(classname) \
     rcp<classname> get_rcp() \
     { \
-        return rcp<classname>(root_rcp); \
+        return rcp<classname>(this); \
     } \
     template <typename... Args> \
     static rcp<classname> create(Args&&... args) \