[PATCH] tmpio: add writev support via kgio

[Eric Wong <e@80x24.org>]

This will allow us to write arrays for chunked output without
unnecessary data copies.
---
 lib/yahns/tmpio.rb |  1 +
 test/test_tmpio.rb | 20 ++++++++++++++++++++
 2 files changed, 21 insertions(+)
 create mode 100644 test/test_tmpio.rb

diff --git a/lib/yahns/tmpio.rb b/lib/yahns/tmpio.rb
index f0ddd2f..d25d5e8 100644
--- a/lib/yahns/tmpio.rb
+++ b/lib/yahns/tmpio.rb
@@ -7,6 +7,7 @@ require 'tmpdir'
 # well with unlinked files.  This one is much shorter, easier
 # to understand, and slightly faster (no delegation).
 class Yahns::TmpIO < File # :nodoc:
+  include Kgio::PipeMethods
 
   # creates and returns a new File object.  The File is unlinked
   # immediately, switched to binary mode, and userspace output
diff --git a/test/test_tmpio.rb b/test/test_tmpio.rb
new file mode 100644
index 0000000..79c9f32
--- /dev/null
+++ b/test/test_tmpio.rb
@@ -0,0 +1,20 @@
+# -*- encoding: binary -*-
+# Copyright (C) 2009-2015 all contributors <yahns-public@yhbt.net>
+# License: GPLv3 or later (https://www.gnu.org/licenses/gpl-2.0.txt)
+require_relative 'helper'
+
+class TestTmpIO < Testcase
+  def test_writev
+    a, b = UNIXSocket.pair
+    a.extend Kgio::PipeMethods
+    tmpio = Yahns::TmpIO.new(Dir.tmpdir)
+    ary = [ "hello\n".freeze, "world\n".freeze ].freeze
+    tmpio.kgio_trywritev(ary)
+    a.trysendfile(tmpio, 0, 12)
+    assert_equal "hello\nworld\n", b.read(12)
+  ensure
+    b.close
+    a.close
+    tmpio.close
+  end
+end
-- 
EW