runtime: Add a RUNTIME_handle2tile function to make public the pointer conversion if needed

include/chameleon/runtime.h

@@ -557,6 +557,18 @@ RUNTIME_data_migrate( const RUNTIME_sequence_t *sequence,
 void *
 RUNTIME_data_getaddr( const CHAM_desc_t *A, int Am, int An );
 
+
+/**
+ * @brief Get the CHAM_tile_t pointer to a tile from the runtime handle pointer
+ * returned by RUNTIME_data_getaddr.
+ *
+ * @param[in] ptr
+ *            The pointer to convert.
+ *
+ * @retval The associated CHAM_tile_t pointer.
+ */
+CHAM_tile_t *RUNTIME_handle2tile( void *ptr );
+
 /**
  * @}
  *

runtime/starpu/interface/cham_tile_interface.c

@@ -772,3 +772,9 @@ starpu_cham_tile_interface_fini()
 #endif
     }
 }
+
+CHAM_tile_t *
+RUNTIME_handle2tile( void *interface )
+{
+    return cti_interface_get( (starpu_cham_tile_interface_t *)interface );
+}