From a5b3d81936ab85edb8713f29baf85307ae0b25b8 Mon Sep 17 00:00:00 2001
From: Lukas Larsson <lukas@erlang-solutions.com>
Date: Fri, 25 Nov 2011 20:29:59 +0100
Subject: Preliminary work on header/trailer

Have to figure out how to represent progress in header writing when
using non-blocking, not sure how to do this.
---
 erts/preloaded/src/prim_file.erl | 35 +++++++++--------------------------
 1 file changed, 9 insertions(+), 26 deletions(-)

(limited to 'erts/preloaded/src')

diff --git a/erts/preloaded/src/prim_file.erl b/erts/preloaded/src/prim_file.erl
index 6bdf5f6e2e..fb19521382 100644
--- a/erts/preloaded/src/prim_file.erl
+++ b/erts/preloaded/src/prim_file.erl
@@ -547,38 +547,21 @@ write_file(_, _) ->
 sendfile(#file_descriptor{module = ?MODULE, data = {Port, _}},
 	 DestFD, Offset, Bytes, ChunkSize, Headers, Trailers,
 	 Nodiskio, MNowait, Sync) ->
-    drv_command(Port, <<?FILE_SENDFILE, DestFD:32,
-			(get_bit(Nodiskio)):1,
-			(get_bit(MNowait)):1,
-			(get_bit(Sync)):1,0:5,
-			Offset:64/unsigned,
-			Bytes:64/unsigned,
-			ChunkSize:64,
-			(encode_hdtl(Headers))/binary,
-			(encode_hdtl(Trailers))/binary>>).
+    drv_command(Port, [<<?FILE_SENDFILE, DestFD:32,
+			 (get_bit(Nodiskio)):1,
+			 (get_bit(MNowait)):1,
+			 (get_bit(Sync)):1,0:5,
+			 Offset:64/unsigned,
+			 Bytes:64/unsigned,
+			 (iolist_size(Headers)):32/unsigned,
+			 (iolist_size(Trailers)):32/unsigned>>,
+		       Headers,Trailers]).
 
 get_bit(true) ->
     1;
 get_bit(false) ->
     0.
 
-encode_hdtl(undefined) ->
-    <<0>>;
-encode_hdtl([]) ->
-    <<0>>;
-encode_hdtl(List) ->
-    encode_hdtl(List,<<>>,0).
-
-encode_hdtl([], Acc, Cnt) ->
-    <<Cnt:8, Acc/binary>>;
-encode_hdtl([Bin|T], Acc, Cnt) when is_binary(Bin) ->
-    encode_hdtl(T, <<(byte_size(Bin)):32, Bin/binary, Acc/binary>>,Cnt + 1);
-encode_hdtl([Bin|T], Acc, Cnt) ->
-    encode_hdtl(T, <<(iolist_size(Bin)):32, (iolist_to_binary(Bin))/binary,
-		     Acc/binary>>,Cnt + 1).
-
-
-
 
 
 %%%-----------------------------------------------------------------
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