add skynet.queue

test/pingserver.lua

@@ -1,4 +1,5 @@
 local skynet = require "skynet"
+local queue = require "skynet.queue"
 
 local i = 0
 local hello = "hello"
@@ -8,9 +9,27 @@ function response.ping(hello)
 	return hello
 end
 
+-- response.sleep and accept.hello share one lock
+local lock
+
+function accept.sleep(queue, n)
+	if queue then
+		lock(
+		function()
+			print("queue=",queue, n)
+			skynet.sleep(n)
+		end)
+	else
+		print("queue=",queue, n)
+		skynet.sleep(n)
+	end
+end
+
 function accept.hello()
+	lock(function()
 	i = i + 1
 	print (i, hello)
+	end)
 end
 
 function response.error()
@@ -19,6 +38,8 @@ end
 
 function init( ... )
 	print ("ping server start:", ...)
+	-- init queue
+	lock = queue()
 
 -- You can return "queue" for queue service mode
 --	return "queue"