OTP-8335 NIF improvements:

          Driver API for multi-threading made available for NIFs.

          Support for mempory managed (garbage collected) resource objects.
          A way to pass "pointers" to native data structures between C and
          Erlang in a safe way.

          Support for references, floats and term comparison.

          Various new functions, like enif_inspect_iolist_as_binary,
          enif_make_sub_binary, enif_get_string, enif_get_atom,
          enif_make_tuple_from_array, enif_make_list_from_array,
          enif_make_existing_atom.

1 files changed, 44 insertions, 0 deletions

diff --git a/erts/example/matrix_nif.erl b/erts/example/matrix_nif.erl
new file mode 100644
index 0000000000..9008977e01
--- /dev/null
+++ b/erts/example/matrix_nif.erl
@@ -0,0 +1,44 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2010. All Rights Reserved.
+%%
+%% The contents of this file are subject to the Erlang Public License,
+%% Version 1.1, (the "License"); you may not use this file except in
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved online at http://www.erlang.org/.
+%%
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%%
+%% %CopyrightEnd%
+%%
+
+%%
+%% Purpose: Simple example of NIFs using resource objects to implement functions
+%%          for matrix calculations.
+
+-module(matrix_nif).
+
+-export([create/3, pos/3, add/2, size_of/1, to_term/1]).
+
+-define(nif, nif_error(?LINE)). 
+
+-on_load(on_load/0).
+
+on_load() ->
+    erlang:load_nif("./matrix_nif", 0).
+
+%% NIFs
+create(_Rows, _Cols, _RowList) -> ?nif.
+pos(_Mx, _Row, _Col) -> ?nif.
+add(_MxA, _MxB) -> ?nif.
+size_of(_Mx) -> ?nif.
+to_term(_Mx) -> ?nif.
+
+nif_error(Line) ->
+    erlang:error({"NIF not implemented in matrix_nif at line", Line}).
+