bugfix: update until delete

examples/share.lua

@@ -10,9 +10,15 @@ skynet.start(function()
 	sharedata.new("foobar", { a=1, b= { "hello",  "world" } })
 
 	skynet.fork(function()
-		skynet.sleep(300)	-- sleep 3s
+		skynet.sleep(200)	-- sleep 3s
 		skynet.error("update foobar")
 		sharedata.update("foobar", { a =2 })
+		skynet.sleep(200)	-- sleep 3s
+		skynet.error("update foobar")
+		sharedata.update("foobar", { a = 3, b = { "change" } })
+		skynet.sleep(100)
+		skynet.error("delete foobar")
+		sharedata.delete "foobar"
 	end)
 end)
 
@@ -47,6 +53,11 @@ skynet.start(function()
 		skynet.error(err)
 	end
 
+	-- obj. b is not the same with local b
+	for k,v in ipairs(obj.b) do
+		skynet.error(string.format("b[%d] = %s", k , tostring(v)))
+	end
+
 	collectgarbage()
 	skynet.error("sleep")
 	skynet.sleep(100)
@@ -55,8 +66,6 @@ skynet.start(function()
 	skynet.error("sleep")
 	skynet.sleep(100)
 
-	sharedata.delete "foobar"
-
 	skynet.exit()
 end)
 

lualib/sharedata.lua

@@ -10,8 +10,15 @@ end)
 local sharedata = {}
 
 local function monitor(name, obj, cobj)
-	local newobj = skynet.call(service, "lua", "monitor", name, cobj)
-	sd.update(obj, newobj)
+	local newobj = cobj
+	while true do
+		newobj = skynet.call(service, "lua", "monitor", name, newobj)
+		if newobj == nil then
+			return
+		end
+		sd.update(obj, newobj)
+	end
+	print("name exit")
 end
 
 function sharedata.query(name)

service/sharedatad.lua

@@ -56,6 +56,11 @@ function CMD.delete(name)
 	assert(objmap[v.obj])
 	objmap[v.obj] = true
 	sharedata.host.decref(v.obj)
+	for _,v in ipairs(v.watch) do
+		local session = v[1]
+		local address = v[2]
+		skynet.redirect(address, 0, "response", session, skynet.pack(nil))
+	end
 end
 
 function CMD.query(name)
@@ -78,7 +83,9 @@ function CMD.update(name, t)
 	if v then
 		watch = v.watch
 		oldcobj = v.obj
-		CMD.delete(name)
+		objmap[oldcobj] = true
+		sharedata.host.decref(oldcobj)
+		pool[name] = nil
 	end
 	CMD.new(name, t)
 	local newobj = pool[name].obj