xo-alloc2: ++ plumbing for AAllocator / DArena

src/alloc2/AAllocator.cpp

@@ -3,16 +3,7 @@
 #include "xo/alloc2/AAllocator.hpp"
 
 namespace xo {
-    using xo::facet::DVariantPlaceholder;
-    using xo::facet::typeseq;
-    using xo::facet::valid_facet_implementation;
-
     namespace mm {
-        int32_t
-        IAllocator_Any::s_typeseq = typeseq::id<DVariantPlaceholder>;
-
-        bool
-        IAllocator_Any::_valid = valid_facet_implementation<AAllocator, IAllocator_Any>;
     }
 }
 

src/alloc2/CMakeLists.txt

@@ -4,6 +4,7 @@ set(SELF_LIB xo_alloc2)
 set(SELF_SRCS
     AAllocator.cpp
     DArena.cpp
+    IAllocator_Any.cpp
     IAllocator_DArena.cpp
     )
 

src/alloc2/IAllocator_Any.cpp

@@ -0,0 +1,24 @@
+/** @file IAllocator_Any.cpp
+ *
+ *  @author Roland Conybeare, Dec 2025
+ **/
+
+#include "IAllocator_Any.hpp"
+
+namespace xo {
+    using xo::facet::DVariantPlaceholder;
+    using xo::facet::typeseq;
+    using xo::facet::valid_facet_implementation;
+
+    namespace mm {
+
+        int32_t
+        IAllocator_Any::s_typeseq = typeseq::id<DVariantPlaceholder>();
+
+        bool
+        IAllocator_Any::_valid = valid_facet_implementation<AAllocator, IAllocator_Any>();
+
+    } /*namespace mm*/
+} /*namespace xo*/
+
+/* end IAllocator_Any.cpp */

src/alloc2/IAllocator_DArena.cpp

@@ -5,6 +5,7 @@
 
 #include "IAllocator_DArena.hpp"
 #include <cassert>
+#include <cstddef>
 
 namespace xo {
     namespace mm {
@@ -14,6 +15,11 @@ namespace xo {
             return s.config_.name_;
         }
 
+        std::size_t
+        IAllocator_DArena::reserved(const DArena & s) {
+            return s.hi_ - s.lo_;
+        }
+
         std::size_t
         IAllocator_DArena::size(const DArena & s) {
             return s.limit_ - s.lo_;