Changeset 282 in Sophya for trunk/SophyaLib/BaseTools

Timestamp:

Apr 29, 1999, 2:46:32 PM (26 years ago)

Author:

ansari

Message:

comptage de refs simple

File:

• trunk/SophyaLib/BaseTools/rcptr.h (modified) (3 diffs)

trunk/SophyaLib/BaseTools/rcptr.h

@@ -6 +6 @@
 // This implements a very simple "smart pointer" with reference counting.
 // Many refinements are possible
-//  - implement operator =
 //  - const propagation
-//  - invasive, when type T has field refcnt, instead of list
+// ...
 
 // Principle :  use RCPtr<T> instead of T*
@@ -22 +21 @@
 class RCPtr {
 public:
-  RCPtr(T* obj) {
+  RCPtr(T* obj=0) {
     x = obj;
     cnt = new int;
@@ -32 +31 @@
     cnt = other.cnt;
     (*cnt)++;
+  }
+
+  RCPtr<T>& operator = (RCPtr const& other) {
+    (*cnt)--;
+    if (!*cnt) {
+      delete x;
+      delete cnt;
+    }
+    x = other.x;
+    cnt = other.cnt;
+    (*cnt)++;
+    return *this;
   }