multi/integration/lanesManager/init.lua

--[[
MIT License

Copyright (c) 2022 Ryan Ward

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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SOFTWARE.
]]

package.path = "?/init.lua;?.lua;" .. package.path
multi, thread = require("multi"):init() -- get it all and have it on all lanes
if multi.integration then -- This allows us to call the lanes manager from supporting modules without a hassle
	return {
		init = function()
			return multi.integration.GLOBAL, multi.integration.THREAD
		end
	}
end
-- Step 1 get lanes
lanes = require("lanes").configure()
multi.SystemThreads = {}
multi.isMainThread = true

function multi:canSystemThread()
	return true
end

function multi:getPlatform()
	return "lanes"
end

-- Step 2 set up the Linda objects
local __GlobalLinda = lanes.linda() -- handles global stuff
local __SleepingLinda = lanes.linda() -- handles sleeping stuff
local __ConsoleLinda = lanes.linda() -- handles console stuff
local __StatusLinda = lanes.linda() -- handles pushstatus for stfunctions

local GLOBAL,THREAD = require("multi.integration.lanesManager.threads").init(__GlobalLinda, __SleepingLinda, __StatusLinda, __ConsoleLinda)
local count = 1
local started = false
local livingThreads = {}

function THREAD:newFunction(func, holdme)
	return thread:newFunctionBase(function(...)
		return multi:newSystemThread("TempSystemThread",func,...)
	end, holdme)()
end

function multi:newSystemThread(name, func, ...)
	local name = name or multi.randomString(16)
	multi.InitSystemThreadErrorHandler()
	local rand = math.random(1, 10000000)
	local return_linda = lanes.linda()
	c = {}
	c.name = name
	c.Name = name
	c.Id = count
	c.loadString = {"base","package","os","io","math","table","string","coroutine"}
	livingThreads[count] = {true, name}
	c.returns = return_linda
	c.Type = "sthread"
	c.creationTime = os.clock()
	c.alive = true
	c.priority = THREAD.Priority_Normal
	local multi_settings = multi.defaultSettings
	local globe = {
		THREAD_NAME = name,
		THREAD_ID = count,
		THREAD = THREAD,
		GLOBAL = GLOBAL,
		_Console = __ConsoleLinda
	}
	if GLOBAL["__env"] then
		for i,v in pairs(GLOBAL["__env"]) do
			globe[i] = v
		end
	end
	c.thread = lanes.gen("*",
	{
		globals = globe,
		priority = c.priority
	},function(...)
		multi, thread = require("multi"):init(multi_settings)
		require("multi.integration.lanesManager.extensions")
		require("multi.integration.sharedExtensions")
		local has_error = true
		returns = {pcall(func, ...)}
		return_linda:set("returns", returns)
		has_error = false
	end)(...)
	count = count + 1
	function c:getName()
		return c.Name
	end
	function c:kill()
		self.thread:cancel()
		self.alive = false
	end
	table.insert(multi.SystemThreads, c)
	c.OnDeath = multi:newConnection()
	c.OnError = multi:newConnection()
	GLOBAL["__THREADS__"] = livingThreads
	return c
end

THREAD.newSystemThread = multi.newSystemThread

function multi.InitSystemThreadErrorHandler()
	if started == true then
		return
	end
	started = true
	thread:newThread("SystemThreadScheduler",function()
		local threads = multi.SystemThreads
		local _,data,status,push,temp
		while true do
			thread.yield()
			_,data = __ConsoleLinda:receive(0, "Q")
			for i = #threads, 1, -1 do
				temp = threads[i]
				status = temp.thread.status
				push = __StatusLinda:get(temp.Id)
				if push then
					temp.statusconnector:Fire(multi.unpack(({__StatusLinda:receive(nil, temp.Id)})[2]))
				end
				if status == "done" or temp.returns:get("returns") then
					returns = ({temp.returns:receive(0, "returns")})[2]
					livingThreads[temp.Id] = {false, temp.Name}
					temp.alive = false
					if returns[1] == false then
						temp.OnError:Fire(temp, returns[2])
					else
						table.remove(returns,1)
						temp.OnDeath:Fire(multi.unpack(returns))
					end
					GLOBAL["__THREADS__"] = livingThreads
					table.remove(threads, i)
				elseif status == "running" then
					--
				elseif status == "waiting" then
					--
				elseif status == "error" then
					-- The thread never really errors, we handle this through our linda object
				elseif status == "cancelled" then
					livingThreads[temp.Id] = {false, temp.Name}
					temp.alive = false
					temp.OnError:Fire(temp,"thread_cancelled")
					GLOBAL["__THREADS__"] = livingThreads
					table.remove(threads, i)
				elseif status == "killed" then
					livingThreads[temp.Id] = {false, temp.Name}
					temp.alive = false
					temp.OnError:Fire(temp,"thread_killed")
					GLOBAL["__THREADS__"] = livingThreads
					table.remove(threads, i)
				end
			end
		end
	end).OnError(print)
end

multi.print("Integrated Lanes Threading!")
multi.integration = {} -- for module creators
multi.integration.GLOBAL = GLOBAL
multi.integration.THREAD = THREAD
require("multi.integration.lanesManager.extensions")
require("multi.integration.sharedExtensions")
return {
	init = function()
		return GLOBAL, THREAD
	end
}