Added multi.OnExit()

changes.md

@@ -3,7 +3,23 @@
 Update 14.1.0 Bug Fixes and a change
 -------------
 # Added: 
-- thread enviroments are able to interact with threaded functions and wait when there is the presence of variables. Only works when creating "Globals" inside of a thread. The way the enviroment has been set up is that it sets your "Global" as a "GLocal" a global variable local to the threaded enviroment. This does not have the access speed benifits that using pure locals have..
+- multi.OnExit(func) -- A special connection that allows you to connect onto the lua state closing event.
+```lua
+package.path="?/init.lua;?.lua;"..package.path
+multi,thread = require("multi"):init()
+multi.OnExit(function(n)
+	print("Code Exited")
+end)
+sdf() -- Non existing function being called to trigger an error
+```
+```lua
+package.path="?/init.lua;?.lua;"..package.path
+multi,thread = require("multi"):init()
+multi.OnExit(function(n)
+	print("Code Exited")
+end) -- The code finishing also triggers this event
+```
+- thread enviroments are able to interact with threaded functions and wait when there is the presence of variables. Only works when creating "Globals" inside of a thread. The way the enviroment has been set up is that it sets your "Global" as a "GLocal" a global variable local to the threaded enviroment. This does not have the access speed benifits that using pure locals have.
 ```lua
 package.path="?/init.lua;?.lua;"..package.path
 multi,thread = require("multi"):init()
@@ -13,7 +29,7 @@ multi:newThread(function()
 		thread.sleep(1)
 		return 1,2
 	end
-	a,b = test().wait() -- Will modify Global
+	-- a,b = test().wait() -- Will modify Global
 	-- when wait is used the special metamethod routine is not triggered and variables are set as normal
 	a,b = test() -- Will modify GLocal
 	-- the threaded function test triggers a special routine within the metamethod that alters the thread's enviroment instead of the global enviroment. 
@@ -28,7 +44,6 @@ end)
 multi:newAlarm(2):OnRing(function()
 	print(a,b)
 end)
---min,hour,day,wday,month
 multi:mainloop()
 ```
 - multi:scheduleJob(time,func)

multi/init.lua

@@ -1334,6 +1334,20 @@ function multi:scheduleJob(time,func)
 	end
 	table.insert(scheduledjobs,{time, func,false})
 end
+-- Special Events
+local _os = os.exit
+function os.exit(n)
+	multi.OnExit:Fire(n or 0)
+	_os(n)
+end
+multi.OnExit = multi:newConnection()
+multi.m = {onexit = function() multi.OnExit:Fire() end}
+if _VERSION >= "Lua 5.2" then
+	setmetatable(multi.m, {__gc = multi.m.onexit})
+else
+	multi.m.sentinel = newproxy(true)
+	getmetatable(multi.m.sentinel).__gc = multi.m.onexit
+end
 -- Threading stuff
 multi.GlobalVariables={}
 if os.getOS()=="windows" then

test.lua

@@ -1,22 +1,5 @@
 package.path="?/init.lua;?.lua;"..package.path
 multi,thread = require("multi"):init()
-a,b = 6,7
-multi:newThread(function()
-	function test()
-		thread.sleep(1)
-		return 1,2
-	end
-	a,b = test().wait()
-	print("Waited:",a,b)
-	--This returns instantly even though the function isn't done!
-	test().connect(function(a,b)
-		print("Connected:",a,b)
-		os.exit()
-	end)
-	-- This waits for the returns since we are demanding them
+multi.OnExit(function(n)
+	print("Code Exited")
 end)
-multi:newAlarm(2):OnRing(function()
-	print(a,b)
-end)
---min,hour,day,wday,month
-multi:mainloop()