Merge pull request #135 from cloudwu/dev

release v0.4.2

.gitignore

@@ -1,10 +1,10 @@
 *.o
 *.a
-./skynet
+/skynet
-./skynet.pid
+/skynet.pid
 3rd/lua/lua
 3rd/lua/luac
-./cservice
+/cservice
-./luaclib
+/luaclib
 *.so
 *.dSYM

HISTORY.md

@@ -1,3 +1,22 @@
+v0.4.2 (2014-7-14)
+-----------
+* Bugfix : invalid negative socket id 
+* Add optional TCP_NODELAY support
+* Add worker thread weight
+* Add skynet.queue
+* Bugfix: socketchannel
+* cluster can throw error
+* Add readline and writeline to clientsocket lib
+* Add cluster.reload to reload config file
+* Add datacenter.wait
+
+v0.4.1 (2014-7-7)
+-----------
+* Add SERVICE_NAME in loader
+* Throw error back when skynet.error
+* Add skynet.task
+* Bugfix for last version (harbor service bugs)
+
 v0.4.0 (2014-6-30)
 -----------
 * Optimize redis driver `compose_message`.

README.md

@@ -3,7 +3,7 @@
 For linux, install autoconf first for jemalloc
 
 ```
-git clone git@github.com:cloudwu/skynet.git
+git clone https://github.com/cloudwu/skynet.git
 cd skynet
 make 'PLATFORM'  # PLATFORM can be linux, macosx, freebsd now
 ```
@@ -38,5 +38,4 @@ You can also use the offical lua version , edit the makefile by yourself .
 
 * http://blog.codingnow.com/2012/09/the_design_of_skynet.html
 * http://blog.codingnow.com/2012/08/skynet.html
-* http://blog.codingnow.com/2012/08/skynet_harbor_rpc.html
 * http://blog.codingnow.com/eo/skynet/

examples/client.lua

@@ -39,7 +39,7 @@ end
 
 while true do
 	dispatch()
-	local cmd = socket.readline()
+	local cmd = socket.readstdin()
 	if cmd then
 		local args = {}
 		string.gsub(cmd, '[^ ]+', function(v) table.insert(args, v) end )

examples/main.lua

@@ -12,6 +12,7 @@ skynet.start(function()
 		port = 8888,
 		maxclient = max_client,
 	})
+	print("Watchdog listen on ", 8888)
 
 	skynet.exit()
 end)

examples/simplemonitor.lua

@@ -12,7 +12,7 @@ skynet.register_protocol {
 		local w = service_map[address]
 		if w then
 			for watcher in pairs(w) do
-				skynet.redirect(watcher, address, "error", "")
+				skynet.redirect(watcher, address, "error", 0, "")
 			end
 			service_map[address] = false
 		end

examples/watchdog.lua

@@ -33,6 +33,7 @@ function SOCKET.data(fd, msg)
 end
 
 function CMD.start(conf)
+	skynet.call(gate, "lua", "nodelay", true)
 	skynet.call(gate, "lua", "open" , conf)
 end
 

lualib-src/lua-clientsocket.c

@@ -125,14 +125,19 @@ _block:
 		boolean (true: data, false: block, nil: close)
 		string last
  */
+
+struct socket_buffer {
+	void * buffer;
+	int sz;
+};
+
 static int
-lrecv(lua_State *L) {
+recv_socket(lua_State *L, char *tmp, struct socket_buffer *result) {
 	int fd = luaL_checkinteger(L,1);
 	size_t sz = 0;
 	const char * last = lua_tolstring(L,2,&sz);
 	luaL_checktype(L, 3, LUA_TTABLE);
 
-	char tmp[CACHE_SIZE];
 	char * buffer;
 	int r = recv(fd, tmp, CACHE_SIZE, 0);
 	if (r == 0) {
@@ -163,10 +168,64 @@ lrecv(lua_State *L) {
 		lua_pushnil(L);
 		lua_rawseti(L, 3, i);
 	}
-
+	result->buffer = buffer;
-	return unpack(L, (uint8_t *)buffer, r+sz, 0);
+	result->sz = r + sz;
+	return -1;
 }
 
+static int
+lrecv(lua_State *L) {
+	struct socket_buffer sb;
+	char tmp[CACHE_SIZE];
+	int ret = recv_socket(L, tmp, &sb);
+	if (ret < 0) {
+		return unpack(L, sb.buffer, sb.sz, 0);
+	} else {
+		return ret;
+	}
+}
+
+static int
+unpack_line(lua_State *L, uint8_t *buffer, int sz, int n) {
+	if (sz == 0) 
+		goto _block;
+	if (buffer[0] == '\n') {
+		return unpack_line(L, buffer+1, sz-1, n);
+	}
+	int i;
+	for (i=1;i<sz;i++) {
+		if (buffer[i] == '\n') {
+			++n;
+			lua_pushlstring(L, (const char *)buffer, i);
+			lua_rawseti(L, 3, n);
+			buffer += i + 1;
+			sz -= i + 1;
+			return unpack_line(L, buffer, sz, n);
+		}
+	}
+_block:
+	lua_pushboolean(L, n==0 ? 0:1);
+	if (sz == 0) {
+		lua_pushnil(L);
+	} else {
+		lua_pushlstring(L, (const char *)buffer, sz);
+	}
+	return 2;
+}
+
+static int
+lreadline(lua_State *L) {
+	struct socket_buffer sb;
+	char tmp[CACHE_SIZE];
+	int ret = recv_socket(L, tmp, &sb);
+	if (ret < 0) {
+		return unpack_line(L, sb.buffer, sb.sz, 0);
+	} else {
+		return ret;
+	}
+}
+
+
 static int
 lusleep(lua_State *L) {
 	int n = luaL_checknumber(L, 1);
@@ -219,7 +278,7 @@ readline_stdin(void * arg) {
 }
 
 static int
-lreadline(lua_State *L) {
+lreadstdin(lua_State *L) {
 	struct queue *q = lua_touserdata(L, lua_upvalueindex(1));
 	LOCK(q);
 	if (q->head == q->tail) {
@@ -236,6 +295,18 @@ lreadline(lua_State *L) {
 	return 1;
 }
 
+static int
+lwriteline(lua_State *L) {
+	size_t sz = 0;
+	int fd = luaL_checkinteger(L,1);
+	const char * msg = luaL_checklstring(L, 2, &sz);
+	block_send(L, fd, msg, sz);
+	char nl[1] = { '\n' };
+	block_send(L, fd, nl, 1);
+	
+	return 0;
+}
+
 int
 luaopen_clientsocket(lua_State *L) {
 	luaL_checkversion(L);
@@ -245,14 +316,16 @@ luaopen_clientsocket(lua_State *L) {
 		{ "send", lsend },
 		{ "close", lclose },
 		{ "usleep", lusleep },
+		{ "readline", lreadline },
+		{ "writeline", lwriteline },
 		{ NULL, NULL },
 	};
 	luaL_newlib(L, l);
 
 	struct queue * q = lua_newuserdata(L, sizeof(*q));
 	memset(q, 0, sizeof(*q));
-	lua_pushcclosure(L, lreadline, 1);
+	lua_pushcclosure(L, lreadstdin, 1);
-	lua_setfield(L, -2, "readline");
+	lua_setfield(L, -2, "readstdin");
 
 	pthread_t pid ;
 	pthread_create(&pid, NULL, readline_stdin, q);

lualib-src/lua-cluster.c

@@ -15,7 +15,7 @@
 		uint32_t next_session
  */
 
-#define TEMP_LENGTH 0x10002
+#define TEMP_LENGTH 0x10007
 
 static void
 fill_uint32(uint8_t * buf, uint32_t n) {
@@ -146,6 +146,7 @@ lunpackrequest(lua_State *L) {
 
 /*
 	int session
+	boolean ok
 	lightuserdata msg
 	int sz
 	return string response
@@ -155,15 +156,27 @@ lpackresponse(lua_State *L) {
 	uint32_t session = luaL_checkunsigned(L,1);
 	// clusterd.lua:command.socket call lpackresponse,
 	// and the msg/sz is return by skynet.rawcall , so don't free(msg)
-	void * msg = lua_touserdata(L,2);
+	int ok = lua_toboolean(L,2);
-	size_t sz = luaL_checkunsigned(L, 3);
+	void * msg;
+	size_t sz;
+	
+	if (lua_type(L,3) == LUA_TSTRING) {
+		msg = (void *)lua_tolstring(L, 3, &sz);
+		if (sz > 0x1000) {
+			sz = 0x1000;
+		}
+	} else {
+		msg = lua_touserdata(L,3);
+		sz = luaL_checkunsigned(L, 4);
+	}
 
 	uint8_t buf[TEMP_LENGTH];
-	fill_header(L, buf, sz+4, msg);
+	fill_header(L, buf, sz+5, msg);
 	fill_uint32(buf+2, session);
-	memcpy(buf+6,msg,sz);
+	buf[6] = ok;
+	memcpy(buf+7,msg,sz);
 
-	lua_pushlstring(L, (const char *)buf, sz+6);
+	lua_pushlstring(L, (const char *)buf, sz+7);
 
 	return 1;
 }
@@ -178,13 +191,13 @@ static int
 lunpackresponse(lua_State *L) {
 	size_t sz;
 	const char * buf = luaL_checklstring(L, 1, &sz);
-	if (sz < 4) {
+	if (sz < 5) {
 		return 0;
 	}
 	uint32_t session = unpack_uint32((const uint8_t *)buf);
 	lua_pushunsigned(L, session);
-	lua_pushboolean(L, 1);
+	lua_pushboolean(L, buf[4]);
-	lua_pushlstring(L, buf+4, sz-4);
+	lua_pushlstring(L, buf+5, sz-5);
 
 	return 3;
 }

lualib-src/lua-mongo.c

@@ -506,7 +506,7 @@ op_insert(lua_State *L) {
 		int i;
 		for (i=1;i<=s;i++) {
 			lua_rawgeti(L,3,i);
-			document doc = lua_touserdata(L,3);
+			document doc = lua_touserdata(L,-1);
 			luaL_addlstring(&b, (const char *)doc, get_length(doc));
 			lua_pop(L,1);
 		}

lualib-src/lua-socket.c

@@ -14,6 +14,7 @@
 #define BACKLOG 32
 // 2 ** 12 == 4096
 #define LARGE_PAGE_NODE 12
+#define BUFFER_LIMIT (256 * 1024)
 
 struct buffer_node {
 	char * msg;
@@ -22,6 +23,7 @@ struct buffer_node {
 };
 
 struct socket_buffer {
+	int limit;
 	int size;
 	int offset;
 	struct buffer_node *head;
@@ -64,6 +66,7 @@ lnewpool(lua_State *L, int sz) {
 static int
 lnewbuffer(lua_State *L) {
 	struct socket_buffer * sb = lua_newuserdata(L, sizeof(*sb));	
+	sb->limit = luaL_optint(L,1,BUFFER_LIMIT);
 	sb->size = 0;
 	sb->offset = 0;
 	sb->head = NULL;
@@ -126,6 +129,9 @@ lpushbuffer(lua_State *L) {
 	sb->size += sz;
 
 	lua_pushinteger(L, sb->size);
+	if (sb->limit > 0 && sb->size > sb->limit) {
+		return luaL_error(L, "buffer overflow (limit = %d, size = %d)", sb->limit, sb->size);
+	}
 
 	return 1;
 }
@@ -476,6 +482,14 @@ lstart(lua_State *L) {
 	return 0;
 }
 
+static int
+lnodelay(lua_State *L) {
+	struct skynet_context * ctx = lua_touserdata(L, lua_upvalueindex(1));
+	int id = luaL_checkinteger(L, 1);
+	skynet_socket_nodelay(ctx,id);
+	return 0;
+}
+
 int
 luaopen_socketdriver(lua_State *L) {
 	luaL_checkversion(L);
@@ -502,6 +516,7 @@ luaopen_socketdriver(lua_State *L) {
 		{ "lsend", lsendlow },
 		{ "bind", lbind },
 		{ "start", lstart },
+		{ "nodelay", lnodelay },
 		{ NULL, NULL },
 	};
 	lua_getfield(L, LUA_REGISTRYINDEX, "skynet_context");

lualib/cluster.lua

@@ -16,6 +16,10 @@ function cluster.open(port)
 	end
 end
 
+function cluster.reload()
+	skynet.call(clusterd, "lua", "reload")
+end
+
 skynet.init(function()
 	clusterd = skynet.uniqueservice("clusterd")
 end)

lualib/datacenter.lua

@@ -10,5 +10,9 @@ function datacenter.set(...)
 	return skynet.call("DATACENTER", "lua", "UPDATE", ...)
 end
 
+function datacenter.wait(...)
+	return skynet.call("DATACENTER", "lua", "WAIT", ...)
+end
+
 return datacenter
 

lualib/loader.lua

@@ -3,11 +3,13 @@ for word in string.gmatch(..., "%S+") do
 	table.insert(args, word)
 end
 
+SERVICE_NAME = args[1]
+
 local main, pattern
 
 local err = {}
 for pat in string.gmatch(LUA_SERVICE, "([^;]+);*") do
-	local filename = string.gsub(pat, "?", args[1])
+	local filename = string.gsub(pat, "?", SERVICE_NAME)
 	local f, msg = loadfile(filename)
 	if not f then
 		table.insert(err, msg)

lualib/mqueue.lua

@@ -1,3 +1,5 @@
+-- This is a deprecated module, use skynet.queue instead.
+
 local skynet = require "skynet"
 local c = require "skynet.c"
 

lualib/skynet.lua

@@ -22,7 +22,7 @@ local skynet = {
 	PTYPE_HARBOR = 5,
 	PTYPE_SOCKET = 6,
 	PTYPE_ERROR = 7,
-	PTYPE_QUEUE = 8,
+	PTYPE_QUEUE = 8,	-- use in deprecated mqueue, use skynet.queue instead
 	PTYPE_DEBUG = 9,
 	PTYPE_LUA = 10,
 	PTYPE_SNAX = 11,
@@ -229,7 +229,10 @@ function skynet.self()
 end
 
 function skynet.localname(name)
-	return string_to_handle(c.command("QUERY", name))
+	local addr = c.command("QUERY", name)
+	if addr then
+		return string_to_handle(addr)
+	end
 end
 
 function skynet.launch(...)
@@ -253,6 +256,13 @@ end
 
 function skynet.exit()
 	skynet.send(".launcher","lua","REMOVE",skynet.self())
+	for co, session in pairs(session_coroutine_id) do
+		local address = session_coroutine_address[co]
+		local self = skynet.self()
+		if session~=0 and address then
+			skynet.redirect(address, self, "error", session, "")
+		end
+	end
 	c.command("EXIT")
 end
 
@@ -318,6 +328,9 @@ end
 
 function skynet.rawcall(addr, typename, msg, sz)
 	local p = proto[typename]
+	if watching_service[addr] == false then
+		error("Service is dead")
+	end
 	local session = assert(c.send(addr, p.id , nil , msg, sz), "call to invalid address")
 	return yield_call(addr, session)
 end
@@ -569,12 +582,24 @@ function skynet.monitor(service, query)
 	end
 	assert(monitor, "Monitor launch failed")
 	c.command("MONITOR", string.format(":%08x", monitor))
+	return monitor
 end
 
 function skynet.mqlen()
 	return tonumber(c.command "MQLEN")
 end
 
+function skynet.task(ret)
+	local t = 0
+	for session,co in pairs(session_id_coroutine) do
+		if ret then
+			ret[session] = debug.traceback(co)
+		end
+		t = t + 1
+	end
+	return t
+end
+
 -- Inject internal debug framework
 local debug = require "skynet.debug"
 debug(skynet)

lualib/skynet/debug.lua

@@ -21,9 +21,16 @@ end
 function dbgcmd.STAT()
 	local stat = {}
 	stat.mqlen = skynet.mqlen()
+	stat.task = skynet.task()
 	skynet.ret(skynet.pack(stat))
 end
 
+function dbgcmd.TASK()
+	local task = {}
+	skynet.task(task)
+	skynet.ret(skynet.pack(task))
+end
+
 function dbgcmd.INFO()
 	if internal_info_func then
 		skynet.ret(skynet.pack(internal_info_func()))

lualib/skynet/queue.lua

@@ -0,0 +1,33 @@
+local skynet = require "skynet"
+local coroutine = coroutine
+local pcall = pcall
+local table = table
+
+function skynet.queue()
+	local current_thread
+	local ref = 0
+	local thread_queue = {}
+	return function(f, ...)
+		local thread = coroutine.running()
+		if ref == 0 then
+			current_thread = thread
+		elseif current_thread ~= thread then
+			table.insert(thread_queue, thread)
+			skynet.wait()
+			assert(ref == 0)
+		end
+		ref = ref + 1
+		local ok, err = pcall(f, ...)
+		ref = ref - 1
+		if ref == 0 then
+			current_thread = nil
+			local co = table.remove(thread_queue,1)
+			if co then
+				skynet.wakeup(co)
+			end
+		end
+		assert(ok,err)
+	end
+end
+
+return skynet.queue

lualib/socket.lua

@@ -2,6 +2,7 @@ local driver = require "socketdriver"
 local skynet = require "skynet"
 local assert = assert
 
+local buffer_limit = -1
 local socket = {}	-- api
 local buffer_pool = {}	-- store all message buffer object
 local socket_pool = setmetatable( -- store all socket object
@@ -47,7 +48,13 @@ socket_message[1] = function(id, size, data)
 		return
 	end
 
-	local sz = driver.push(s.buffer, buffer_pool, data, size)
+	local ok , sz = pcall(driver.push, s.buffer, buffer_pool, data, size)
+	if not ok then
+		skynet.error("socket: error on ", id , sz)
+		driver.clear(s.buffer,buffer_pool)
+		driver.close(id)
+		return
+	end
 	local rr = s.read_required
 	local rrt = type(rr)
 	if rrt == "number" then
@@ -123,7 +130,7 @@ skynet.register_protocol {
 local function connect(id, func)
 	local newbuffer
 	if func == nil then
-		newbuffer = driver.buffer()
+		newbuffer = driver.buffer(buffer_limit)
 	end
 	local s = {
 		id = id,
@@ -318,4 +325,8 @@ function socket.abandon(id)
 	socket_pool[id] = nil
 end
 
+function socket.limit(limit)
+	buffer_limit = limit
+end
+
 return socket

lualib/socketchannel.lua

@@ -135,6 +135,9 @@ local function dispatch_by_order(self)
 				if result ~= socket_error then
 					errmsg = result_ok
 				end
+				self.__result[co] = socket_error
+				self.__result_data[co] = errmsg
+				skynet.wakeup(co)
 				wakeup_all(self, errmsg)
 			end
 		end

service-src/service_harbor.c

@@ -262,7 +262,8 @@ harbor_release(struct harbor *h) {
 		struct slave *s = &h->s[i];
 		if (s->fd && s->status != STATUS_DOWN) {
 			close_harbor(h,i);
-			report_harbor_down(h,i);
+			// don't call report_harbor_down.
+			// never call skynet_send during module exit, because of dead lock
 		}
 	}
 	hash_delete(h->map);
@@ -314,7 +315,9 @@ forward_local_messsage(struct harbor *h, void *msg, int sz) {
 	int type = (destination >> HANDLE_REMOTE_SHIFT) | PTYPE_TAG_DONTCOPY;
 	destination = (destination & HANDLE_MASK) | ((uint32_t)h->id << HANDLE_REMOTE_SHIFT);
 
-	skynet_send(h->ctx, header.source, destination, type, (int)header.session, (void *)msg, sz-HEADER_COOKIE_LENGTH);
+	if (skynet_send(h->ctx, header.source, destination, type, (int)header.session, (void *)msg, sz-HEADER_COOKIE_LENGTH) < 0) {
+		skynet_error(h->ctx, "Unknown destination :%x from :%x", destination, header.source);
+	}
 }
 
 static void
@@ -509,9 +512,12 @@ remote_send_handle(struct harbor *h, uint32_t source, uint32_t destination, int
 			skynet_send(context, destination, source, PTYPE_ERROR, 0 , NULL, 0);
 			skynet_error(context, "Drop message to harbor %d from %x to %x (session = %d, msgsz = %d)",harbor_id, source, destination,session,(int)sz);
 		} else {
+			if (s->queue == NULL) {
+				s->queue = new_queue();
+			}
 			struct remote_message_header header;
 			header.source = source;
-			header.destination = type << HANDLE_REMOTE_SHIFT;
+			header.destination = (type << HANDLE_REMOTE_SHIFT) | (destination & HANDLE_MASK);
 			header.session = (uint32_t)session;
 			push_queue(s->queue, (void *)msg, sz, &header);
 			return 1;

service/clusterd.lua

@@ -5,7 +5,14 @@ local cluster = require "cluster.c"
 
 local config_name = skynet.getenv "cluster"
 local node_address = {}
-assert(loadfile(config_name, "t", node_address))()
+
+local function loadconfig()
+	local f = assert(io.open(config_name))
+	local source = f:read "*a"
+	f:close()
+	assert(load(source, "@"..config_name, "t", node_address))()
+end
+
 local node_session = {}
 local command = {}
 
@@ -30,6 +37,11 @@ end
 
 local node_channel = setmetatable({}, { __index = open_channel })
 
+function command.reload()
+	loadconfig()
+	skynet.ret(skynet.pack(nil))
+end
+
 function command.listen(source, addr, port)
 	local gate = skynet.newservice("gate")
 	if port == nil then
@@ -53,8 +65,13 @@ local request_fd = {}
 function command.socket(source, subcmd, fd, msg)
 	if subcmd == "data" then
 		local addr, session, msg = cluster.unpackrequest(msg)
-		local msg, sz = skynet.rawcall(addr, "lua", msg)
+		local ok , msg, sz = pcall(skynet.rawcall, addr, "lua", msg)
-		local response = cluster.packresponse(session, msg, sz)
+		local response
+		if ok then
+			response = cluster.packresponse(session, true, msg, sz)
+		else
+			response = cluster.packresponse(session, false, msg)
+		end
 		socket.write(fd, response)
 	elseif subcmd == "open" then
 		skynet.error(string.format("socket accept from %s", msg))
@@ -65,7 +82,8 @@ function command.socket(source, subcmd, fd, msg)
 end
 
 skynet.start(function()
-	skynet.dispatch("lua", function(_, source, cmd, ...)
+	loadconfig()
+	skynet.dispatch("lua", function(session , source, cmd, ...)
 		local f = assert(command[cmd])
 		f(source, ...)
 	end)

service/datacenterd.lua

@@ -2,6 +2,8 @@ local skynet = require "skynet"
 
 local command = {}
 local database = {}
+local wait_queue = {}
+local mode = {}
 
 local function query(db, key, ...)
 	if key == nil then
@@ -22,7 +24,7 @@ local function update(db, key, value, ...)
 	if select("#",...) == 0 then
 		local ret = db[key]
 		db[key] = value
-		return ret
+		return ret, value
 	else
 		if db[key] == nil then
 			db[key] = {}
@@ -31,13 +33,82 @@ local function update(db, key, value, ...)
 	end
 end
 
+local function wakeup(db, key1, key2, value, ...)
+	if key1 == nil then
+		return
+	end
+	local q = db[key1]
+	if q == nil then
+		return
+	end
+	if q[mode] == "queue" then
+		db[key1] = nil
+		if value then
+			-- throw error because can't wake up a branch
+			for _,v in ipairs(q) do
+				local session = v[1]
+				local source = v[2]
+				skynet.redirect(source, 0, "error", session, "")
+			end
+		else
+			return q
+		end
+	else
+		-- it's branch
+		return wakeup(q , key2, value, ...)
+	end
+end
+
 function command.UPDATE(...)
-	return update(database, ...)
+	local ret, value = update(database, ...)
+	if ret or value == nil then
+		return ret
+	end
+	local q = wakeup(wait_queue, ...)
+	if q then
+		for _, v in ipairs(q) do
+			local session = v[1]
+			local source = v[2]
+			skynet.redirect(source, 0, "response", session, skynet.pack(value))
+		end
+	end
+end
+
+local function waitfor(session, source, db, key1, key2, ...)
+	if key2 == nil then
+		-- push queue
+		local q = db[key1]
+		if q == nil then
+			q = { [mode] = "queue" }
+			db[key1] = q
+		else
+			assert(q[mode] == "queue")
+		end
+		table.insert(q, { session, source })
+	else
+		local q = db[key1]
+		if q == nil then
+			q = { [mode] = "branch" }
+			db[key1] = q
+		else
+			assert(q[mode] == "branch")
+		end
+		return waitfor(session, source, q, key2, ...)
+	end
 end
 
 skynet.start(function()
-	skynet.dispatch("lua", function (_, source, cmd, ...)
+	skynet.dispatch("lua", function (session, source, cmd, ...)
-		local f = assert(command[cmd])
+		if cmd == "WAIT" then
-		skynet.ret(skynet.pack(f(...)))
+			local ret = command.QUERY(...)
+			if ret then
+				skynet.ret(skynet.pack(ret))
+			else
+				waitfor(session, source, wait_queue, ...)
+			end
+		else
+			local f = assert(command[cmd])
+			skynet.ret(skynet.pack(f(...)))
+		end
 	end)
 end)

service/debug_console.lua

@@ -113,6 +113,7 @@ function COMMAND.help()
 		snax = "lanuch a new snax service",
 		clearcache = "clear lua code cache",
 		service = "List unique service",
+		task = "task address : show service task detail",
 	}
 end
 

service/gate.lua

@@ -8,6 +8,7 @@ local watchdog
 local maxclient
 local client_number = 0
 local CMD = setmetatable({}, { __gc = function() netpack.clear(queue) end })
+local nodelay = false
 
 local connection = {}	-- fd -> connection : { fd , client, agent , ip, mode }
 local forwarding = {}	-- agent -> connection
@@ -22,6 +23,13 @@ function CMD.open( source , conf )
 	socketdriver.start(socket)
 end
 
+function CMD.nodelay(source, v)
+	if v ~= false then
+		v = true
+	end
+	nodelay = v
+end
+
 function CMD.close()
 	assert(socket)
 	socketdriver.close(socket)
@@ -106,6 +114,9 @@ function MSG.open(fd, msg)
 	}
 	connection[fd] = c
 	client_number = client_number + 1
+	if nodelay then
+		socketdriver.nodelay(fd)
+	end
 	skynet.send(watchdog, "lua", "socket", "open", fd, msg)
 end
 

service/launcher.lua

@@ -38,6 +38,16 @@ function command.INFO(_, _, handle)
 	end
 end
 
+function command.TASK(_, _, handle)
+	handle = handle_to_address(handle)
+	if services[handle] == nil then
+		return
+	else
+		local result = skynet.call(handle,"debug","TASK")
+		return result
+	end
+end
+
 function command.KILL(_, _, handle)
 	handle = handle_to_address(handle)
 	skynet.kill(handle)

service/service_mgr.lua

@@ -176,7 +176,7 @@ skynet.start(function()
 		end
 	end)
 	local handle = skynet.localname ".service"
-	if  handle ~= 0 then
+	if  handle then
 		skynet.error(".service is already register by ", skynet.address(handle))
 		skynet.exit()
 	else

skynet-src/skynet_server.c

@@ -245,7 +245,7 @@ skynet_context_dispatchall(struct skynet_context * ctx) {
 }
 
 struct message_queue * 
-skynet_context_message_dispatch(struct skynet_monitor *sm, struct message_queue *q) {
+skynet_context_message_dispatch(struct skynet_monitor *sm, struct message_queue *q, int weight) {
 	if (q == NULL) {
 		q = skynet_globalmq_pop();
 		if (q==NULL)
@@ -261,18 +261,27 @@ skynet_context_message_dispatch(struct skynet_monitor *sm, struct message_queue
 		return skynet_globalmq_pop();
 	}
 
+	int i,n=1;
 	struct skynet_message msg;
-	if (skynet_mq_pop(q,&msg)) {
-		skynet_context_release(ctx);
-		return skynet_globalmq_pop();
-	}
 
-	skynet_monitor_trigger(sm, msg.source , handle);
+	for (i=0;i<n;i++) {
+		if (skynet_mq_pop(q,&msg)) {
+			skynet_context_release(ctx);
+			return skynet_globalmq_pop();
+		} else if (i==0 && weight >= 0) {
+			n = skynet_mq_length(q);
+			n >>= weight;
+		}
 
-	if (ctx->cb == NULL) {
+		skynet_monitor_trigger(sm, msg.source , handle);
-		skynet_free(msg.data);
+
-	} else {
+		if (ctx->cb == NULL) {
-		_dispatch_message(ctx, &msg);
+			skynet_free(msg.data);
+		} else {
+			_dispatch_message(ctx, &msg);
+		}
+
+		skynet_monitor_trigger(sm, 0,0);
 	}
 
 	assert(q == ctx->queue);
@@ -285,8 +294,6 @@ skynet_context_message_dispatch(struct skynet_monitor *sm, struct message_queue
 	} 
 	skynet_context_release(ctx);
 
-	skynet_monitor_trigger(sm, 0,0);
-
 	return q;
 }
 
@@ -361,8 +368,10 @@ static const char *
 cmd_query(struct skynet_context * context, const char * param) {
 	if (param[0] == '.') {
 		uint32_t handle = skynet_handle_findname(param+1);
-		sprintf(context->result, ":%x", handle);
+		if (handle) {
-		return context->result;
+			sprintf(context->result, ":%x", handle);
+			return context->result;
+		}
 	}
 	return NULL;
 }

skynet-src/skynet_server.h

@@ -16,7 +16,7 @@ void skynet_context_init(struct skynet_context *, uint32_t handle);
 int skynet_context_push(uint32_t handle, struct skynet_message *message);
 void skynet_context_send(struct skynet_context * context, void * msg, size_t sz, uint32_t source, int type, int session);
 int skynet_context_newsession(struct skynet_context *);
-struct message_queue * skynet_context_message_dispatch(struct skynet_monitor *, struct message_queue *);	// return next queue
+struct message_queue * skynet_context_message_dispatch(struct skynet_monitor *, struct message_queue *, int weight);	// return next queue
 int skynet_context_total();
 void skynet_context_dispatchall(struct skynet_context * context);	// for skynet_error output before exit
 

skynet-src/skynet_socket.c

@@ -150,3 +150,8 @@ skynet_socket_start(struct skynet_context *ctx, int id) {
 	uint32_t source = skynet_context_handle(ctx);
 	socket_server_start(SOCKET_SERVER, source, id);
 }
+
+void
+skynet_socket_nodelay(struct skynet_context *ctx, int id) {
+	socket_server_nodelay(SOCKET_SERVER, id);
+}

skynet-src/skynet_socket.h

@@ -28,5 +28,6 @@ int skynet_socket_connect(struct skynet_context *ctx, const char *host, int port
 int skynet_socket_bind(struct skynet_context *ctx, int fd);
 void skynet_socket_close(struct skynet_context *ctx, int id);
 void skynet_socket_start(struct skynet_context *ctx, int id);
+void skynet_socket_nodelay(struct skynet_context *ctx, int id);
 
 #endif

skynet-src/skynet_start.c

@@ -27,6 +27,7 @@ struct monitor {
 struct worker_parm {
 	struct monitor *m;
 	int id;
+	int weight;
 };
 
 #define CHECK_ABORT if (skynet_context_total()==0) break;
@@ -118,12 +119,13 @@ static void *
 _worker(void *p) {
 	struct worker_parm *wp = p;
 	int id = wp->id;
+	int weight = wp->weight;
 	struct monitor *m = wp->m;
 	struct skynet_monitor *sm = m->m[id];
 	skynet_initthread(THREAD_WORKER);
 	struct message_queue * q = NULL;
 	for (;;) {
-		q = skynet_context_message_dispatch(sm, q);
+		q = skynet_context_message_dispatch(sm, q, weight);
 		if (q == NULL) {
 			CHECK_ABORT
 			if (pthread_mutex_lock(&m->mutex) == 0) {
@@ -169,10 +171,20 @@ _start(int thread) {
 	create_thread(&pid[1], _timer, m);
 	create_thread(&pid[2], _socket, m);
 
+	static int weight[] = { 
+		-1, -1, -1, -1, 0, 0, 0, 0,
+		1, 1, 1, 1, 1, 1, 1, 1, 
+		2, 2, 2, 2, 2, 2, 2, 2, 
+		3, 3, 3, 3, 3, 3, 3, 3, };
 	struct worker_parm wp[thread];
 	for (i=0;i<thread;i++) {
 		wp[i].m = m;
 		wp[i].id = i;
+		if (i < sizeof(weight)/sizeof(weight[0])) {
+			wp[i].weight= weight[i];
+		} else {
+			wp[i].weight = 0;
+		}
 		create_thread(&pid[i+3], _worker, &wp[i]);
 	}
 

skynet-src/socket_server.c

@@ -5,6 +5,7 @@
 
 #include <sys/types.h>
 #include <sys/socket.h>
+#include <netinet/tcp.h>
 #include <unistd.h>
 #include <errno.h>
 #include <stdlib.h>
@@ -34,6 +35,8 @@
 #define PRIORITY_HIGH 0
 #define PRIORITY_LOW 1
 
+#define HASH_ID(id) (((unsigned)id) % MAX_SOCKET)
+
 struct write_buffer {
 	struct write_buffer * next;
 	char *ptr;
@@ -107,6 +110,12 @@ struct request_start {
 	uintptr_t opaque;
 };
 
+struct request_setopt {
+	int id;
+	int what;
+	int value;
+};
+
 struct request_package {
 	uint8_t header[8];	// 6 bytes dummy
 	union {
@@ -117,6 +126,7 @@ struct request_package {
 		struct request_listen listen;
 		struct request_bind bind;
 		struct request_start start;
+		struct request_setopt setopt;
 	} u;
 	uint8_t dummy[256];
 };
@@ -144,7 +154,7 @@ reserve_id(struct socket_server *ss) {
 		if (id < 0) {
 			id = __sync_and_and_fetch(&(ss->alloc_id), 0x7fffffff);
 		}
-		struct socket *s = &ss->slot[id % MAX_SOCKET];
+		struct socket *s = &ss->slot[HASH_ID(id)];
 		if (s->type == SOCKET_TYPE_INVALID) {
 			if (__sync_bool_compare_and_swap(&s->type, SOCKET_TYPE_INVALID, SOCKET_TYPE_RESERVE)) {
 				s->id = id;
@@ -267,7 +277,7 @@ check_wb_list(struct wb_list *s) {
 
 static struct socket *
 new_fd(struct socket_server *ss, int id, int fd, uintptr_t opaque, bool add) {
-	struct socket * s = &ss->slot[id % MAX_SOCKET];
+	struct socket * s = &ss->slot[HASH_ID(id)];
 	assert(s->type == SOCKET_TYPE_RESERVE);
 
 	if (add) {
@@ -357,7 +367,7 @@ open_socket(struct socket_server *ss, struct request_open * request, struct sock
 	return -1;
 _failed:
 	freeaddrinfo( ai_list );
-	ss->slot[id % MAX_SOCKET].type = SOCKET_TYPE_INVALID;
+	ss->slot[HASH_ID(id)].type = SOCKET_TYPE_INVALID;
 	return SOCKET_ERROR;
 }
 
@@ -502,7 +512,7 @@ send_buffer_empty(struct socket *s) {
 static int
 send_socket(struct socket_server *ss, struct request_send * request, struct socket_message *result, int priority) {
 	int id = request->id;
-	struct socket * s = &ss->slot[id % MAX_SOCKET];
+	struct socket * s = &ss->slot[HASH_ID(id)];
 	if (s->type == SOCKET_TYPE_INVALID || s->id != id 
 		|| s->type == SOCKET_TYPE_HALFCLOSE
 		|| s->type == SOCKET_TYPE_PACCEPT) {
@@ -556,7 +566,7 @@ _failed:
 	result->id = id;
 	result->ud = 0;
 	result->data = NULL;
-	ss->slot[id % MAX_SOCKET].type = SOCKET_TYPE_INVALID;
+	ss->slot[HASH_ID(id)].type = SOCKET_TYPE_INVALID;
 
 	return SOCKET_ERROR;
 }
@@ -564,7 +574,7 @@ _failed:
 static int
 close_socket(struct socket_server *ss, struct request_close *request, struct socket_message *result) {
 	int id = request->id;
-	struct socket * s = &ss->slot[id % MAX_SOCKET];
+	struct socket * s = &ss->slot[HASH_ID(id)];
 	if (s->type == SOCKET_TYPE_INVALID || s->id != id) {
 		result->id = id;
 		result->opaque = request->opaque;
@@ -612,7 +622,7 @@ start_socket(struct socket_server *ss, struct request_start *request, struct soc
 	result->opaque = request->opaque;
 	result->ud = 0;
 	result->data = NULL;
-	struct socket *s = &ss->slot[id % MAX_SOCKET];
+	struct socket *s = &ss->slot[HASH_ID(id)];
 	if (s->type == SOCKET_TYPE_INVALID || s->id !=id) {
 		return SOCKET_ERROR;
 	}
@@ -633,6 +643,17 @@ start_socket(struct socket_server *ss, struct request_start *request, struct soc
 	return -1;
 }
 
+static void
+setopt_socket(struct socket_server *ss, struct request_setopt *request) {
+	int id = request->id;
+	struct socket *s = &ss->slot[HASH_ID(id)];
+	if (s->type == SOCKET_TYPE_INVALID || s->id !=id) {
+		return;
+	}
+	int v = request->value;
+	setsockopt(s->fd, IPPROTO_TCP, request->what, &v, sizeof(v));
+}
+
 static void
 block_readpipe(int pipefd, void *buffer, int sz) {
 	for (;;) {
@@ -696,6 +717,9 @@ ctrl_cmd(struct socket_server *ss, struct socket_message *result) {
 		return send_socket(ss, (struct request_send *)buffer, result, PRIORITY_HIGH);
 	case 'P':
 		return send_socket(ss, (struct request_send *)buffer, result, PRIORITY_LOW);
+	case 'T':
+		setopt_socket(ss, (struct request_setopt *)buffer);
+		return -1;
 	default:
 		fprintf(stderr, "socket-server: Unknown ctrl %c.\n",type);
 		return -1;
@@ -942,7 +966,7 @@ socket_server_connect(struct socket_server *ss, uintptr_t opaque, const char * a
 // return -1 when error
 int64_t 
 socket_server_send(struct socket_server *ss, int id, const void * buffer, int sz) {
-	struct socket * s = &ss->slot[id % MAX_SOCKET];
+	struct socket * s = &ss->slot[HASH_ID(id)];
 	if (s->id != id || s->type == SOCKET_TYPE_INVALID) {
 		return -1;
 	}
@@ -958,7 +982,7 @@ socket_server_send(struct socket_server *ss, int id, const void * buffer, int sz
 
 void 
 socket_server_send_lowpriority(struct socket_server *ss, int id, const void * buffer, int sz) {
-	struct socket * s = &ss->slot[id % MAX_SOCKET];
+	struct socket * s = &ss->slot[HASH_ID(id)];
 	if (s->id != id || s->type == SOCKET_TYPE_INVALID) {
 		return;
 	}
@@ -1053,4 +1077,11 @@ socket_server_start(struct socket_server *ss, uintptr_t opaque, int id) {
 	send_request(ss, &request, 'S', sizeof(request.u.start));
 }
 
-
+void
+socket_server_nodelay(struct socket_server *ss, int id) {
+	struct request_package request;
+	request.u.setopt.id = id;
+	request.u.setopt.what = TCP_NODELAY;
+	request.u.setopt.value = 1;
+	send_request(ss, &request, 'T', sizeof(request.u.setopt));
+}

skynet-src/socket_server.h

@@ -36,4 +36,6 @@ int socket_server_listen(struct socket_server *, uintptr_t opaque, const char *
 int socket_server_connect(struct socket_server *, uintptr_t opaque, const char * addr, int port);
 int socket_server_bind(struct socket_server *, uintptr_t opaque, int fd);
 
+void socket_server_nodelay(struct socket_server *, int id);
+
 #endif

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"

test/testdatacenter.lua

@@ -0,0 +1,23 @@
+local skynet = require "skynet"
+local datacenter = require "datacenter"
+
+local function f1()
+	print("====1==== wait hello")
+	print("\t1>",datacenter.wait ("hello"))
+	print("====1==== wait key.foobar")
+	print("\t1>", pcall(datacenter.wait,"key"))	-- will failed, because "key" is a branch
+	print("\t1>",datacenter.wait ("key", "foobar"))
+end
+
+local function f2()
+	skynet.sleep(10)
+	print("====2==== set key.foobar")
+	datacenter.set("key", "foobar", "bingo")
+end
+
+skynet.start(function()
+	datacenter.set("hello", "world")
+	print(datacenter.get "hello")
+	skynet.fork(f1)
+	skynet.fork(f2)
+end)

test/testdeadcall.lua

@@ -14,12 +14,10 @@ end)
 else
 
 	skynet.start(function()
-		local test = skynet.newservice("testdeadcall", "test")	-- launch self in test mode
+		local test = skynet.newservice(SERVICE_NAME, "test")	-- launch self in test mode
 
 		print(pcall(function()
-			skynet.send(test,"lua", "hello world")
+			skynet.call(test,"lua", "dead call")
-			skynet.send(test,"lua", "never get there")
-			skynet.call(test,"lua", "fake call")
 		end))
 
 		skynet.exit()

test/testmulticast.lua

@@ -27,7 +27,7 @@ skynet.start(function()
 	local channel = mc.new()
 	print("New channel", channel)
 	for i=1,10 do
-		local sub = skynet.newservice("testmulticast", "sub")
+		local sub = skynet.newservice(SERVICE_NAME, "sub")
 		skynet.call(sub, "lua", "init", channel.channel)
 	end
 

test/testqueue.lua

@@ -0,0 +1,18 @@
+local skynet = require "skynet"
+local snax = require "snax"
+
+skynet.start(function()
+	local ps = snax.uniqueservice ("pingserver", "test queue")
+	for i=1, 10 do
+		ps.post.sleep(true,i*10)
+		ps.post.hello()
+	end
+	for i=1, 10 do
+		ps.post.sleep(false,i*10)
+		ps.post.hello()
+	end
+
+	skynet.exit()
+end)
+
+

test/testsocket.lua

@@ -21,6 +21,9 @@ if mode == "agent" then
 	id = tonumber(id)
 
 	skynet.start(function()
+		-- A small limit, if socket buffer overflow, close the client
+		socket.limit(64)
+
 		skynet.fork(function()
 			echo(id)
 			skynet.exit()
@@ -30,7 +33,7 @@ else
 	local function accept(id)
 		socket.start(id)
 		socket.write(id, "Hello Skynet\n")
-		skynet.newservice("testsocket", "agent", id)
+		skynet.newservice(SERVICE_NAME, "agent", id)
 		-- notice: Some data on this connection(id) may lost before new service start.
 		-- So, be careful when you want to use start / abandon / start .
 		socket.abandon(id)