1 files changed, 168 insertions, 0 deletions
diff --git a/libodb/odb/details/tls.hxx b/libodb/odb/details/tls.hxx
new file mode 100644
index 0000000..de6c344
--- /dev/null
+++ b/libodb/odb/details/tls.hxx
@@ -0,0 +1,168 @@
+// file      : odb/details/tls.hxx
+// license   : GNU GPL v2; see accompanying LICENSE file
+
+#ifndef ODB_DETAILS_TLS_HXX
+#define ODB_DETAILS_TLS_HXX
+
+#include <odb/pre.hxx>
+
+#include <odb/details/config.hxx>
+
+#ifdef ODB_THREADS_NONE
+
+#  define ODB_TLS_POINTER(type) type*
+#  define ODB_TLS_OBJECT(type) type
+
+namespace odb
+{
+  namespace details
+  {
+    template <typename T>
+    inline T&
+    tls_get (T& x)
+    {
+      return x;
+    }
+
+    // If early destructions is possible, destroy the object and free
+    // any allocated resources.
+    //
+    template <typename T>
+    inline void
+    tls_free (T&)
+    {
+    }
+
+    template <typename T>
+    inline T*
+    tls_get (T* p)
+    {
+      return p;
+    }
+
+    template <typename T, typename T1>
+    inline void
+    tls_set (T*& rp, T1* p)
+    {
+      rp = p;
+    }
+  }
+}
+
+#elif defined(ODB_THREADS_CXX11)
+
+// Apparently Apple's Clang "temporarily disabled" C++11 thread_local until
+// they can implement a "fast" version, which reportedly happened in XCode 8.
+// So for now we will continue using __thread for this target.
+//
+#  if defined(__apple_build_version__) && __apple_build_version__ < 8000000
+#    define ODB_TLS_POINTER(type) __thread type*
+#    define ODB_TLS_OBJECT(type) thread_local type
+#  else
+#    define ODB_TLS_POINTER(type) thread_local type*
+#    define ODB_TLS_OBJECT(type) thread_local type
+#  endif
+
+namespace odb
+{
+  namespace details
+  {
+    template <typename T>
+    inline T&
+    tls_get (T& x)
+    {
+      return x;
+    }
+
+    template <typename T>
+    inline void
+    tls_free (T&)
+    {
+    }
+
+    template <typename T>
+    inline T*
+    tls_get (T* p)
+    {
+      return p;
+    }
+
+    template <typename T, typename T1>
+    inline void
+    tls_set (T*& rp, T1* p)
+    {
+      rp = p;
+    }
+  }
+}
+
+#elif defined(ODB_THREADS_POSIX)
+
+#  include <odb/details/posix/tls.hxx>
+
+#  ifdef ODB_THREADS_TLS_KEYWORD
+#    define ODB_TLS_POINTER(type) __thread type*
+
+namespace odb
+{
+  namespace details
+  {
+    template <typename T>
+    inline T*
+    tls_get (T* p)
+    {
+      return p;
+    }
+
+    template <typename T, typename T1>
+    inline void
+    tls_set (T*& rp, T1* p)
+    {
+      rp = p;
+    }
+  }
+}
+
+#  else
+#    define ODB_TLS_POINTER(type) tls<type*>
+#  endif
+#  define ODB_TLS_OBJECT(type) tls<type>
+
+#elif defined(ODB_THREADS_WIN32)
+
+#  include <odb/details/win32/tls.hxx>
+
+#  ifdef ODB_THREADS_TLS_DECLSPEC
+#    define ODB_TLS_POINTER(type) __declspec(thread) type*
+
+namespace odb
+{
+  namespace details
+  {
+    template <typename T>
+    inline T*
+    tls_get (T* p)
+    {
+      return p;
+    }
+
+    template <typename T, typename T1>
+    inline void
+    tls_set (T*& rp, T1* p)
+    {
+      rp = p;
+    }
+  }
+}
+
+#  else
+#    define ODB_TLS_POINTER(type) tls<type*>
+#  endif
+#  define ODB_TLS_OBJECT(type) tls<type>
+#else
+# error unknown threading model
+#endif
+
+#include <odb/post.hxx>
+
+#endif // ODB_DETAILS_TLS_HXX