1 files changed, 55 insertions, 0 deletions
diff --git a/code/scheduler.rb b/code/scheduler.rb
new file mode 100644
index 00000000..8624c18a
--- /dev/null
+++ b/code/scheduler.rb
@@ -0,0 +1,55 @@
+require 'thread'
+
+# This thread inspects directories
+module Scheduler
+	extend self
+
+	UPDATE_SIGNAL = 31
+	PRIORITY = -1
+
+	def reset()
+		@scheduled = []
+		@active = false
+
+		@thread ||= Thread.new do
+			Thread.current.priority = PRIORITY
+			while true
+				sleep 0.1
+				if @active and not @scheduled.empty?
+					while dir = @scheduled.shift
+						dir.refresh(true)
+						dir.resize
+						force_update
+					end
+				end
+			end
+		end
+	end
+
+	def run
+		@active = true
+	end
+
+	def stop
+		@active = false
+	end
+
+	def <<(dir)
+		dir.scheduled = true
+		unless include? dir
+			@scheduled << dir
+		end
+	end
+
+	def include?(dir)
+		@scheduled.include?(dir)
+	end
+
+	def force_update
+		Process.kill( UPDATE_SIGNAL, PID )
+	end
+
+#	def priority() @thread.priority end
+#	def priority=(x) @thread.priority=(x) end
+
+end