Add multi-threading primitives

Currently only the pthread-based implementation is present.

1 files changed, 96 insertions, 0 deletions

diff --git a/odb/details/posix/tls.hxx b/odb/details/posix/tls.hxx
new file mode 100644
index 0000000..6e11a64
--- /dev/null
+++ b/odb/details/posix/tls.hxx
@@ -0,0 +1,96 @@
+// file      : odb/details/posix/tls.hxx
+// author    : Boris Kolpackov <boris@codesynthesis.com>
+// copyright : Copyright (c) 2009-2010 Code Synthesis Tools CC
+// license   : GNU GPL v2; see accompanying LICENSE file
+
+#ifndef ODB_DETAILS_POSIX_TLS_HXX
+#define ODB_DETAILS_POSIX_TLS_HXX
+
+#include <pthread.h>
+
+namespace odb
+{
+  namespace details
+  {
+    template <typename T>
+    class tls;
+
+    template <typename T>
+    class tls
+    {
+    public:
+      tls ();
+
+      T&
+      get () const;
+
+    private:
+      tls (const tls&);
+      tls& operator= (const tls&);
+
+    private:
+      static void
+      key_init ();
+
+      static void
+      destructor (void*);
+
+    private:
+      static int error_;
+      static pthread_once_t once_;
+      static pthread_key_t key_;
+    };
+
+    template <typename T>
+    class tls<T*>
+    {
+    public:
+      tls ();
+
+      T*
+      get () const;
+
+      void
+      set (T* p);
+
+    private:
+      tls (const tls&);
+      tls& operator= (const tls&);
+
+    private:
+      static void
+      key_init ();
+
+    private:
+      static int error_;
+      static pthread_once_t once_;
+      static pthread_key_t key_;
+    };
+
+    template <typename T>
+    inline T&
+    tls_get (const tls<T>& s)
+    {
+      return s.get ();
+    }
+
+    template <typename T>
+    inline T*
+    tls_get (const tls<T*>& s)
+    {
+      return s.get ();
+    }
+
+    template <typename T>
+    inline void
+    tls_set (tls<T*>& s, T* p)
+    {
+      return s.set (p);
+    }
+  }
+}
+
+#include <odb/details/posix/tls.ixx>
+#include <odb/details/posix/tls.txx>
+
+#endif // ODB_DETAILS_POSIX_TLS_HXX