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authorEric Wong <normalperson@yhbt.net>2013-08-24 09:54:45 +0000
committerEric Wong <normalperson@yhbt.net>2013-08-24 09:54:45 +0000
commit3e09ac0c10c95bb24a08af62393b4f761e2743d0 (patch)
tree778dffa2ba8798503fc047db0feef6d65426ea22 /lib/dtas/sigevent/pipe.rb
downloaddtas-3e09ac0c10c95bb24a08af62393b4f761e2743d0.tar.gz
Diffstat (limited to 'lib/dtas/sigevent/pipe.rb')
-rw-r--r--lib/dtas/sigevent/pipe.rb29
1 files changed, 29 insertions, 0 deletions
diff --git a/lib/dtas/sigevent/pipe.rb b/lib/dtas/sigevent/pipe.rb
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+++ b/lib/dtas/sigevent/pipe.rb
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+# -*- 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