1 files changed, 90 insertions, 0 deletions
diff --git a/cutl/shared-ptr/base.hxx b/cutl/shared-ptr/base.hxx
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+++ b/cutl/shared-ptr/base.hxx
@@ -0,0 +1,90 @@
+// file      : cutl/shared-ptr/base.hxx
+// author    : Boris Kolpackov <boris@codesynthesis.com>
+// copyright : Copyright (c) 2009 Code Synthesis Tools CC
+// license   : MIT; see accompanying LICENSE file
+
+#ifndef CUTL_SHARED_PTR_BASE_HXX
+#define CUTL_SHARED_PTR_BASE_HXX
+
+#include <new>
+#include <cstddef>   // std::size_t
+#include <exception> // std::exception
+
+namespace cutl
+{
+  struct share
+  {
+    explicit
+    share (char id);
+
+    bool
+    operator== (share) const;
+
+  private:
+    char id_;
+  };
+}
+
+extern cutl::share shared;
+extern cutl::share exclusive;
+
+void*
+operator new (std::size_t, cutl::share) throw (std::bad_alloc);
+
+void
+operator delete (void*, cutl::share) throw ();
+
+namespace cutl
+{
+  struct not_shared: std::exception
+  {
+    virtual char const*
+    what () const throw ();
+  };
+
+  struct shared_base
+  {
+    shared_base ();
+    shared_base (shared_base const&);
+    shared_base&
+    operator= (shared_base const&);
+
+    void
+    _inc_ref ();
+
+    bool
+    _dec_ref ();
+
+    std::size_t
+    _ref_count () const;
+
+    void*
+    operator new (std::size_t, share) throw (std::bad_alloc);
+
+    void
+    operator delete (void*, share) throw ();
+
+    void
+    operator delete (void*) throw ();
+
+  protected:
+    std::size_t counter_;
+  };
+
+  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 (X const*);
+}
+
+#include <cutl/shared-ptr/base.ixx>
+#include <cutl/shared-ptr/base.txx>
+
+#endif // CUTL_SHARED_PTR_BASE_HXX