From 8e761289a2446367267c6c0d9a26e734f0f78306 Mon Sep 17 00:00:00 2001
From: Karen Arutyunov <karen@codesynthesis.com>
Date: Wed, 16 Dec 2020 20:29:05 +0300
Subject: Get rid of legacy build systems and rename cutl/ to libcutl/

---
 libcutl/shared-ptr/base.hxx | 91 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 91 insertions(+)
 create mode 100644 libcutl/shared-ptr/base.hxx

(limited to 'libcutl/shared-ptr/base.hxx')

diff --git a/libcutl/shared-ptr/base.hxx b/libcutl/shared-ptr/base.hxx
new file mode 100644
index 0000000..f49a532
--- /dev/null
+++ b/libcutl/shared-ptr/base.hxx
@@ -0,0 +1,91 @@
+// file      : libcutl/shared-ptr/base.hxx
+// license   : MIT; see accompanying LICENSE file
+
+#ifndef LIBCUTL_SHARED_PTR_BASE_HXX
+#define LIBCUTL_SHARED_PTR_BASE_HXX
+
+#include <new>
+#include <cstddef>   // std::size_t
+
+#include <libcutl/exception.hxx>
+
+#include <libcutl/export.hxx>
+
+namespace cutl
+{
+  struct share
+  {
+    explicit
+    share (char id);
+
+    bool
+    operator== (share) const;
+
+  private:
+    char id_;
+  };
+}
+
+extern LIBCUTL_EXPORT cutl::share shared;
+extern LIBCUTL_EXPORT cutl::share exclusive;
+
+LIBCUTL_EXPORT void*
+operator new (std::size_t, cutl::share);
+
+LIBCUTL_EXPORT void
+operator delete (void*, cutl::share) noexcept;
+
+namespace cutl
+{
+  struct LIBCUTL_EXPORT not_shared: exception
+  {
+    virtual char const*
+    what () const noexcept;
+  };
+
+  struct LIBCUTL_EXPORT 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);
+
+    void
+    operator delete (void*, share) noexcept;
+
+    void
+    operator delete (void*) noexcept;
+
+  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 <libcutl/shared-ptr/base.ixx>
+#include <libcutl/shared-ptr/base.txx>
+
+#endif // LIBCUTL_SHARED_PTR_BASE_HXX
-- 
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