1 files changed, 29 insertions, 0 deletions
diff --git a/lib/dtas/sigevent/pipe.rb b/lib/dtas/sigevent/pipe.rb
new file mode 100644
index 0000000..139aa68
--- /dev/null
+++ b/lib/dtas/sigevent/pipe.rb
@@ -0,0 +1,29 @@
+# -*- encoding: binary -*-
+# :stopdoc:
+# Copyright (C) 2013, Eric Wong <normalperson@yhbt.net>
+# License: GPLv3 or later (https://www.gnu.org/licenses/gpl-3.0.txt)
+class DTAS::Sigevent
+  attr_reader :to_io
+
+  def initialize
+    @to_io, @wr = IO.pipe
+  end
+
+  def signal
+    @wr.syswrite('.') rescue nil
+  end
+
+  def readable_iter
+    begin
+      @to_io.read_nonblock(11)
+      yield self, nil # calls DTAS::Process.reaper
+    rescue Errno::EAGAIN
+      return :wait_readable
+    end while true
+  end
+
+  def close
+    @to_io.close
+    @wr.close
+  end
+end