1 files changed, 131 insertions, 0 deletions
diff --git a/libodb/odb/details/shared-ptr/base.hxx b/libodb/odb/details/shared-ptr/base.hxx
new file mode 100644
index 0000000..8cd4c86
--- /dev/null
+++ b/libodb/odb/details/shared-ptr/base.hxx
@@ -0,0 +1,131 @@
+// file      : odb/details/shared-ptr/base.hxx
+// license   : GNU GPL v2; see accompanying LICENSE file
+
+#ifndef ODB_DETAILS_SHARED_PTR_BASE_HXX
+#define ODB_DETAILS_SHARED_PTR_BASE_HXX
+
+#include <odb/pre.hxx>
+
+#include <odb/details/config.hxx> // ODB_CXX11, ODB_NOTHROW_NOEXCEPT
+
+#include <new>
+#include <cstddef>   // std::size_t
+
+#ifdef ODB_CXX11
+#include <atomic>
+#endif
+
+#include <odb/details/export.hxx>
+#include <odb/details/shared-ptr/counter-type.hxx>
+
+namespace odb
+{
+  namespace details
+  {
+    struct share
+    {
+      explicit
+      share (char id);
+
+      bool
+      operator== (share) const;
+
+    private:
+      char id_;
+    };
+
+    extern LIBODB_EXPORT share shared;
+    extern LIBODB_EXPORT share exclusive;
+  }
+}
+
+#ifdef ODB_CXX11
+LIBODB_EXPORT void*
+operator new (std::size_t, odb::details::share);
+#else
+LIBODB_EXPORT void*
+operator new (std::size_t, odb::details::share) throw (std::bad_alloc);
+#endif
+
+LIBODB_EXPORT void
+operator delete (void*, odb::details::share) ODB_NOTHROW_NOEXCEPT;
+
+namespace odb
+{
+  namespace details
+  {
+    class LIBODB_EXPORT shared_base
+    {
+    public:
+      shared_base ();
+      shared_base (const shared_base&);
+      shared_base&
+      operator= (const shared_base&);
+
+      void
+      _inc_ref ();
+
+      bool
+      _dec_ref ();
+
+      std::size_t
+      _ref_count () const;
+
+#ifdef ODB_CXX11
+      void*
+      operator new (std::size_t);
+
+      void*
+      operator new (std::size_t, share);
+#else
+      void*
+      operator new (std::size_t) throw (std::bad_alloc);
+
+      void*
+      operator new (std::size_t, share) throw (std::bad_alloc);
+#endif
+
+      void
+      operator delete (void*, share) ODB_NOTHROW_NOEXCEPT;
+
+      void
+      operator delete (void*) ODB_NOTHROW_NOEXCEPT;
+
+      struct refcount_callback
+      {
+        void* arg;
+
+        // Return true if the object should be deleted, false otherwise.
+        //
+        bool (*zero_counter) (void*);
+      };
+
+    protected:
+#ifdef ODB_CXX11
+      std::atomic<std::size_t> counter_;
+#else
+      std::size_t counter_;
+#endif
+      refcount_callback* callback_;
+    };
+
+    template <typename X>
+    inline X*
+    inc_ref (X*);
+
+    template <typename X>
+    inline void
+    dec_ref (X*);
+
+    template <typename X>
+    inline std::size_t
+    ref_count (const X*);
+  }
+}
+
+#include <odb/details/shared-ptr/base.ixx>
+#include <odb/details/shared-ptr/base.txx>
+
+#include <odb/post.hxx>
+
+#endif // ODB_DETAILS_SHARED_PTR_BASE_HXX