add skynet.pcall for hotfix use (call a function with require)

examples/cluster1.lua

@@ -5,6 +5,9 @@ skynet.start(function()
 	local sdb = skynet.newservice("simpledb")
 	skynet.name(".simpledb", sdb)
 	print(skynet.call(".simpledb", "lua", "SET", "a", "foobar"))
+	print(skynet.call(".simpledb", "lua", "SET", "b", "foobar2"))
 	print(skynet.call(".simpledb", "lua", "GET", "a"))
+	print(skynet.call(".simpledb", "lua", "GET", "b"))
 	cluster.open "db"
+	cluster.open "db2"
 end)

examples/cluster2.lua

@@ -5,4 +5,5 @@ skynet.start(function()
 	local proxy = cluster.proxy("db", ".simpledb")
 	print(skynet.call(proxy, "lua", "GET", "a"))
 	print(cluster.call("db", ".simpledb", "GET", "a"))
+	print(cluster.call("db2", ".simpledb", "GET", "b"))
 end)

examples/clustername.lua

@@ -1 +1,2 @@
 db = "127.0.0.1:2528"
+db2 = "127.0.0.1:2529"

lualib/skynet.lua

@@ -620,8 +620,10 @@ end
 local function init_all()
 	local funcs = init_func
 	init_func = nil
-	for k,v in pairs(funcs) do
-		v()
+	if funcs then
+		for k,v in pairs(funcs) do
+			v()
+		end
 	end
 end
 
@@ -632,8 +634,12 @@ local function init_template(start)
 	init_all()
 end
 
+function skynet.pcall(start)
+	return xpcall(init_template, debug.traceback, start)
+end
+
 local function init_service(start)
-	local ok, err = xpcall(init_template, debug.traceback, start)
+	local ok, err = skynet.pcall(start)
 	if not ok then
 		skynet.error("init service failed: " .. tostring(err))
 		skynet.send(".launcher","lua", "ERROR")

lualib/skynet/debug.lua

@@ -49,7 +49,7 @@ end
 
 function dbgcmd.RUN(source, filename)
 	local inject = require "skynet.inject"
-	local output = inject(source, filename , export.dispatch, skynet.register_protocol)
+	local output = inject(skynet, source, filename , export.dispatch, skynet.register_protocol)
 	collectgarbage "collect"
 	skynet.ret(skynet.pack(table.concat(output, "\n")))
 end

lualib/skynet/inject.lua

@@ -18,7 +18,7 @@ local function getupvaluetable(u, func, unique)
 	end
 end
 
-return function(source, filename , ...)
+return function(skynet, source, filename , ...)
 	if filename then
 		filename = "@" .. filename
 	else
@@ -56,7 +56,7 @@ return function(source, filename , ...)
 	if not func then
 		return { err }
 	end
-	local ok, err = xpcall(func, debug.traceback)
+	local ok, err = skynet.pcall(func)
 	if not ok then
 		table.insert(output, err)
 	end

service/sharedatad.lua

@@ -44,7 +44,7 @@ function CMD.new(name, t)
 	elseif dt == "string" then
 		value = setmetatable({}, env_mt)
 		local f = load(t, "=" .. name, "t", value)
-		f()
+		assert(skynet.pcall(f))
 		setmetatable(value, nil)
 	elseif dt == "nil" then
 		value = {}