add sharemap , an example of stm

test/testsm.lua

@@ -0,0 +1,48 @@
+local skynet = require "skynet"
+local sharemap = require "sharemap"
+
+local mode = ...
+
+if mode == "slave" then
+--slave
+
+local function dump(reader)
+	reader:update()
+	print("x=", reader.x)
+	print("y=", reader.y)
+	print("s=", reader.s)
+end
+
+skynet.start(function()
+	local reader
+	skynet.dispatch("lua", function(_,_,cmd,...)
+		if cmd == "init" then
+			reader = sharemap.reader(...)
+		else
+			assert(cmd == "ping")
+			dump(reader)
+		end
+		skynet.ret()
+	end)
+end)
+
+else
+-- master
+skynet.start(function()
+	-- register share type schema
+	sharemap.register("./test/sharemap.sp")
+	local slave = skynet.newservice(SERVICE_NAME, "slave")
+	local writer = sharemap.writer("foobar", { x=0,y=0,s="hello" })
+	skynet.call(slave, "lua", "init", "foobar", writer:copy())
+	writer.x = 1
+	writer:commit()
+	skynet.call(slave, "lua", "ping")
+	writer.y = 2
+	writer:commit()
+	skynet.call(slave, "lua", "ping")
+	writer.s = "world"
+	writer:commit()
+	skynet.call(slave, "lua", "ping")
+end)
+
+end