multi/multi/integration/loveManager/init.lua

--[[
MIT License

Copyright (c) 2020 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
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sub-license, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
]]
if ISTHREAD then
    error("You cannot require the loveManager from within a thread!")
end
local ThreadFileData = [[
ISTHREAD = true
THREAD = require("multi.integration.loveManager.threads") -- order is important!
sThread = THREAD
__IMPORTS = {...}
__FUNC__=table.remove(__IMPORTS,1)
__THREADID__=table.remove(__IMPORTS,1)
__THREADNAME__=table.remove(__IMPORTS,1)
stab = THREAD.createStaticTable(__THREADNAME__)
GLOBAL = THREAD.getGlobal()
multi, thread = require("multi").init()
stab["returns"] = {THREAD.loadDump(__FUNC__)(unpack(__IMPORTS))}
]]
local multi, thread = require("multi.compat.love2d"):init()
local THREAD = {}
__THREADID__ = 0
__THREADNAME__ = "MainThread"
multi.integration={}
multi.integration.love2d={}
local THREAD = require("multi.integration.loveManager.threads")
local GLOBAL = THREAD.getGlobal()
local THREAD_ID = 1
local OBJECT_ID = 0
local stf = 0
function THREAD:newFunction(func,holup)
    local tfunc = {}
	tfunc.Active = true
	function tfunc:Pause()
		self.Active = false
	end
	function tfunc:Resume()
		self.Active = true
	end
	function tfunc:holdMe(b)
		holdme = b
	end
	local function noWait()
		return nil, "Function is paused"
	end
    local rets, err
	local function wait(no) 
		if thread.isThread() and not (no) then
			-- In a thread
		else
			-- Not in a thread
		end
	end
    tfunc.__call = function(t,...)
		if not t.Active then 
			if holdme then
				return nil, "Function is paused"
			end
			return {
				isTFunc = true,
				wait = noWait,
				connect = function(f)
					f(nil,"Function is paused")
				end
			}
		end 
        local t = multi:newSystemThread("SystemThreadedFunction",func,...)
		t.OnDeath(function(self,...) rets = {...}  end)
		t.OnError(function(self,e) err = e end)
		if holdme then
			return wait()
		end
		local temp = {
			OnStatus = multi:newConnection(),
			OnError = multi:newConnection(),
			OnReturn = multi:newConnection(),
			isTFunc = true,
			wait = wait,
			connect = function(f)
				local tempConn = multi:newConnection()
				t.OnDeath(function(self,...) if f then f(...) else tempConn:Fire(...) end end) 
				t.OnError(function(self,err) if f then f(nil,err) else tempConn:Fire(nil,err) end end)
				return tempConn
			end
		}
		t.OnDeath(function(self,...) temp.OnReturn:Fire(...) end) 
		t.OnError(function(self,err) temp.OnError:Fire(err) end)
		t.linkedFunction = temp
		t.statusconnector = temp.OnStatus
		return temp
	end
	setmetatable(tfunc,tfunc)
    return tfunc
end
function multi:newSystemThread(name,func,...)
    local c = {}
    c.name = name
    c.ID=THREAD_ID
    c.thread=love.thread.newThread(ThreadFileData)
    c.thread:start(THREAD.dump(func),c.ID,c.name,...)
    c.stab = THREAD.createStaticTable(name)
    GLOBAL["__THREAD_"..c.ID] = {ID=c.ID,Name=c.name,Thread=c.thread}
    GLOBAL["__THREAD_COUNT"] = THREAD_ID
    THREAD_ID=THREAD_ID+1
    multi:newThread(function()
        while true do
            thread.yield()
            if c.stab["returns"] then
                c.OnDeath:Fire(c,unpack(t.stab.returns))
                t.stab.returns = nil
                thread.kill()
            end
            local error = c.thread:getError()
            if error then
                if error:find("Thread Killed!\1") then
                    c.OnDeath:Fire(c,"Thread Killed!")
                    thread.kill()
                else
                    c.OnError:Fire(c,error)
                    thread.kill()
                end
            end
        end
    end)
    return c
end
function love.threaderror(thread, errorstr)
  print("Thread error!\n"..errorstr)
end
multi.integration.GLOBAL = GLOBAL
multi.integration.THREAD = THREAD
require("multi.integration.loveManager.extensions")
print("Integrated Love Threading!")
return {init=function()
    return GLOBAL,THREAD
end}