具有本地链路擦除的Lua全局表
我有一个由几个文件组成的模块,其中声明了一个全局表,用于在函数之间传递消息。 当我试图清理一个全局表而不是main文件时,我遇到了冲突,据我所知,这是因为我正在创建一个链接localvalues=\u G.values但我这样做是为了在访问此变量时提高性能 如何清除另一个文件中的全局(使用本地链接)表? 也许还有其他方法可以在模块文件之间传输共享数据,而无需访问 模块:具有本地链路擦除的Lua全局表,lua,Lua,我有一个由几个文件组成的模块,其中声明了一个全局表,用于在函数之间传递消息。 当我试图清理一个全局表而不是main文件时,我遇到了冲突,据我所知,这是因为我正在创建一个链接localvalues=\u G.values但我这样做是为了在访问此变量时提高性能 如何清除另一个文件中的全局(使用本地链接)表? 也许还有其他方法可以在模块文件之间传输共享数据,而无需访问 模块: main.lua utils/a.lua utils/b.lua 梅因·卢阿 os.setlocale("C&qu
main.lua
utils/a.lua
utils/b.lua
梅因·卢阿
os.setlocale("C")
package.path = package.path .. ";./utils/?.lua"; -- luacheck: ignore
local Timer = require("timer")
_G.run = true;
_G.values = {};
local counter = 0;
local values = _G.values;
local timer_main = Timer:new()
timer_main:setInterval(1)
local timer_work = Timer:new()
timer_work:setInterval(10)
local a = require("utils.a");
local b = require("utils.b");
local function UpdateTable()
counter = counter + 1
print("Update table from main: "..tostring(values))
values[counter] = {Apple=counter+1, Banana=counter+2, Orange=counter+3}
end;
local function main()
print("Global_main_start: "..tostring(_G.values))
print("Local_main_start: "..tostring(values))
while _G.run do
if timer_main:isTimeout() then
UpdateTable()
print("Global_main_loop: "..tostring(_G.values))
print("Local_main_loop: "..tostring(values))
timer_main:setInterval(1)
end
b.TaskExecute()
if timer_work:isTimeout() then
_G.run = false
end
end
print("Global_main_stop: "..tostring(_G.values))
print("Local_main_stop: "..tostring(values))
end;
main()
a、 卢阿
b、 卢阿
timer.lua(仅用于同时执行func)
输出:
Local_after_require_a: table: 0x7ff50ac09230
Local_after_require_a: table: 0x7ff50ac09230
Local_after_require_b: table: 0x7ff50ac09230
Global_main_start: table: 0x7ff50ac09230
Local_main_start: table: 0x7ff50ac09230
Update table from main: table: 0x7ff50ac09230
Global_main_loop: table: 0x7ff50ac09230
Local_main_loop: table: 0x7ff50ac09230
Update table from main: table: 0x7ff50ac09230
Global_main_loop: table: 0x7ff50ac09230
Local_main_loop: table: 0x7ff50ac09230
Update table from main: table: 0x7ff50ac09230
Global_main_loop: table: 0x7ff50ac09230
Local_main_loop: table: 0x7ff50ac09230
Global Execute b before: table: 0x7ff50ac09230
Local Execute b before: table: 0x7ff50ac09230
Values item: 1 table: 0x7ff50ac07be0
Values item: 2 table: 0x7ff50c0040d0
Values item: 3 table: 0x7ff50af049d0
Global EraseData a before: table: 0x7ff50ac09230
Local EraseData a before: table: 0x7ff50ac09230
Global EraseData a after: table: 0x7ff50af05510 <--- Erased Global var in a.lua
Local EraseData a after: table: 0x7ff50ac09230 <--- Local var in a.lua not changed
Global Execute b after: table: 0x7ff50af05510 <--- Global var in b.lua changed
Local Execute b after: table: 0x7ff50ac09230 <--- Local var in b.lua not changed
Update table from main: table: 0x7ff50ac09230 <--- Add new values in old local var in main.lua
Global_main_loop: table: 0x7ff50af05510 <--- Global var in main.lua changed
Local_main_loop: table: 0x7ff50ac09230 <--- Local var in main.lua not changed
Update table from main: table: 0x7ff50ac09230
Global_main_loop: table: 0x7ff50af05510
Local_main_loop: table: 0x7ff50ac09230
Update table from main: table: 0x7ff50ac09230
Global_main_loop: table: 0x7ff50af05510
Local_main_loop: table: 0x7ff50ac09230
Global Execute b before: table: 0x7ff50af05510
Local Execute b before: table: 0x7ff50ac09230
Values item: 1 table: 0x7ff50ac07be0
Values item: 2 table: 0x7ff50c0040d0
Values item: 3 table: 0x7ff50af049d0
Values item: 4 table: 0x7ff50c004280
Values item: 5 table: 0x7ff50ac08bb0
Values item: 6 table: 0x7ff50c004410
Global EraseData a before: table: 0x7ff50af05510
Local EraseData a before: table: 0x7ff50ac09230
Global EraseData a after: table: 0x7ff50c004940
Local EraseData a after: table: 0x7ff50ac09230
Global Execute b after: table: 0x7ff50c004940
Local Execute b after: table: 0x7ff50ac09230
Update table from main: table: 0x7ff50ac09230
Global_main_loop: table: 0x7ff50c004940
Local_main_loop: table: 0x7ff50ac09230
Update table from main: table: 0x7ff50ac09230
Global_main_loop: table: 0x7ff50c004940
Local_main_loop: table: 0x7ff50ac09230
Update table from main: table: 0x7ff50ac09230
Global_main_loop: table: 0x7ff50c004940
Local_main_loop: table: 0x7ff50ac09230
Global Execute b before: table: 0x7ff50c004940
Local Execute b before: table: 0x7ff50ac09230
Values item: 1 table: 0x7ff50ac07be0
Values item: 2 table: 0x7ff50c0040d0
Values item: 3 table: 0x7ff50af049d0
Values item: 4 table: 0x7ff50c004280
Values item: 5 table: 0x7ff50ac08bb0
Values item: 6 table: 0x7ff50c004410
Values item: 7 table: 0x7ff50ac09380
Values item: 8 table: 0x7ff50ac09510
Values item: 9 table: 0x7ff50c004350
Global EraseData a before: table: 0x7ff50c004940
Local EraseData a before: table: 0x7ff50ac09230
Global EraseData a after: table: 0x7ff50c004b90
Local EraseData a after: table: 0x7ff50ac09230
Global Execute b after: table: 0x7ff50c004b90
Local Execute b after: table: 0x7ff50ac09230
Update table from main: table: 0x7ff50ac09230
Global_main_loop: table: 0x7ff50c004b90
Local_main_loop: table: 0x7ff50ac09230
Global_main_stop: table: 0x7ff50c004b90
Local_main_stop: table: 0x7ff50ac09230
Local\u-after\u-require\u a:table:0x7ff50ac09230
本地请求后的请求:表:0x7ff50ac09230
需求后的本地需求:表:0x7ff50ac09230
全局主启动:表:0x7ff50ac09230
本地主启动:表:0x7ff50ac09230
从main更新表:表:0x7ff50ac09230
全局主循环:表:0x7ff50ac09230
本地主回路:表:0x7ff50ac09230
从main更新表:表:0x7ff50ac09230
全局主循环:表:0x7ff50ac09230
本地主回路:表:0x7ff50ac09230
从main更新表:表:0x7ff50ac09230
全局主循环:表:0x7ff50ac09230
本地主回路:表:0x7ff50ac09230
表0x7ff50ac09230之前的全局执行b
本地执行b之前:表:0x7ff50ac09230
值项:1表:0x7ff50ac07be0
值项:2表:0x7ff50c0040d0
值项:3表:0x7ff50af049d0
之前的全局擦除数据a:表:0x7ff50ac09230
之前的本地数据a:表:0x7ff50ac09230
全局擦除:表:0x7ff50af05510之后的数据a执行\u G.values={}
不会“擦除”表。它仅将\u G.values
的引用更改为新创建的表。前面指向的表\u G.values
完全不变,任何其他引用(如a
的本地值
)将保持不变。您可以通过print语句中显示的值看到这一点
表格:0x7ff50ac09230
这是原始表格
表格:0x7ff50af05510
这是新表格
因为您没有更改表:0x7ff50ac09230
,所以您不会看到a
的本地值发生任何更改
我建议您将要清除的表值向下推一个级别,使其位于所引用的表中:
主要
a
我还发现没有必要在您提供的代码中使用\u G
,只需执行局部值=值
如果需要访问“原始值”,正确的值将是全局值值现在被局部着色,那么\u G
就有意义了。您可以通过删除表中的所有元素来清理表:对于成对的k(值)do values[k]=nil end
local Timer = require("timer")
local values = _G.values;
local a = a or require("a");
local timer_b = Timer:new()
timer_b:setInterval(3)
print("Local_after_require_b: "..tostring(values))
local function TaskExecute()
if timer_b:isTimeout() then
print("Global Execute b before: "..tostring(_G.values))
print("Local Execute b before: "..tostring(values))
if #values > 0 then
for i = 1, #values do
print(" Values item: "..i.." "..tostring(values[i]))
end
end
a.EraseData()
print("Global Execute b after: "..tostring(_G.values))
print("Local Execute b after: "..tostring(values))
timer_b:setInterval(3)
end
end;
return {
TaskExecute = TaskExecute
}
local base = _G;
local math = math;
local os = os;
local Timer = {}
local function new(self)
local timer = {
deadline = os.time()
}
base.setmetatable(timer, self)
self.__index = self
return timer
end
Timer.new = new
local function setInterval(self, duration)
self.deadline = os.time() + duration
end
Timer.setInterval = setInterval
local function setDate(self, date)
self.deadline = os.time(date)
end
Timer.setDate = setDate
local function getSecondsLeft(self)
return math.max(0, self.deadline - os.time())
end
Timer.getSecondsLeft = getSecondsLeft
local function isTimeout(self)
return os.time() >= self.deadline
end
Timer.isTimeout = isTimeout
return Timer
Local_after_require_a: table: 0x7ff50ac09230
Local_after_require_a: table: 0x7ff50ac09230
Local_after_require_b: table: 0x7ff50ac09230
Global_main_start: table: 0x7ff50ac09230
Local_main_start: table: 0x7ff50ac09230
Update table from main: table: 0x7ff50ac09230
Global_main_loop: table: 0x7ff50ac09230
Local_main_loop: table: 0x7ff50ac09230
Update table from main: table: 0x7ff50ac09230
Global_main_loop: table: 0x7ff50ac09230
Local_main_loop: table: 0x7ff50ac09230
Update table from main: table: 0x7ff50ac09230
Global_main_loop: table: 0x7ff50ac09230
Local_main_loop: table: 0x7ff50ac09230
Global Execute b before: table: 0x7ff50ac09230
Local Execute b before: table: 0x7ff50ac09230
Values item: 1 table: 0x7ff50ac07be0
Values item: 2 table: 0x7ff50c0040d0
Values item: 3 table: 0x7ff50af049d0
Global EraseData a before: table: 0x7ff50ac09230
Local EraseData a before: table: 0x7ff50ac09230
Global EraseData a after: table: 0x7ff50af05510 <--- Erased Global var in a.lua
Local EraseData a after: table: 0x7ff50ac09230 <--- Local var in a.lua not changed
Global Execute b after: table: 0x7ff50af05510 <--- Global var in b.lua changed
Local Execute b after: table: 0x7ff50ac09230 <--- Local var in b.lua not changed
Update table from main: table: 0x7ff50ac09230 <--- Add new values in old local var in main.lua
Global_main_loop: table: 0x7ff50af05510 <--- Global var in main.lua changed
Local_main_loop: table: 0x7ff50ac09230 <--- Local var in main.lua not changed
Update table from main: table: 0x7ff50ac09230
Global_main_loop: table: 0x7ff50af05510
Local_main_loop: table: 0x7ff50ac09230
Update table from main: table: 0x7ff50ac09230
Global_main_loop: table: 0x7ff50af05510
Local_main_loop: table: 0x7ff50ac09230
Global Execute b before: table: 0x7ff50af05510
Local Execute b before: table: 0x7ff50ac09230
Values item: 1 table: 0x7ff50ac07be0
Values item: 2 table: 0x7ff50c0040d0
Values item: 3 table: 0x7ff50af049d0
Values item: 4 table: 0x7ff50c004280
Values item: 5 table: 0x7ff50ac08bb0
Values item: 6 table: 0x7ff50c004410
Global EraseData a before: table: 0x7ff50af05510
Local EraseData a before: table: 0x7ff50ac09230
Global EraseData a after: table: 0x7ff50c004940
Local EraseData a after: table: 0x7ff50ac09230
Global Execute b after: table: 0x7ff50c004940
Local Execute b after: table: 0x7ff50ac09230
Update table from main: table: 0x7ff50ac09230
Global_main_loop: table: 0x7ff50c004940
Local_main_loop: table: 0x7ff50ac09230
Update table from main: table: 0x7ff50ac09230
Global_main_loop: table: 0x7ff50c004940
Local_main_loop: table: 0x7ff50ac09230
Update table from main: table: 0x7ff50ac09230
Global_main_loop: table: 0x7ff50c004940
Local_main_loop: table: 0x7ff50ac09230
Global Execute b before: table: 0x7ff50c004940
Local Execute b before: table: 0x7ff50ac09230
Values item: 1 table: 0x7ff50ac07be0
Values item: 2 table: 0x7ff50c0040d0
Values item: 3 table: 0x7ff50af049d0
Values item: 4 table: 0x7ff50c004280
Values item: 5 table: 0x7ff50ac08bb0
Values item: 6 table: 0x7ff50c004410
Values item: 7 table: 0x7ff50ac09380
Values item: 8 table: 0x7ff50ac09510
Values item: 9 table: 0x7ff50c004350
Global EraseData a before: table: 0x7ff50c004940
Local EraseData a before: table: 0x7ff50ac09230
Global EraseData a after: table: 0x7ff50c004b90
Local EraseData a after: table: 0x7ff50ac09230
Global Execute b after: table: 0x7ff50c004b90
Local Execute b after: table: 0x7ff50ac09230
Update table from main: table: 0x7ff50ac09230
Global_main_loop: table: 0x7ff50c004b90
Local_main_loop: table: 0x7ff50ac09230
Global_main_stop: table: 0x7ff50c004b90
Local_main_stop: table: 0x7ff50ac09230
messages = {}
messages.values = {}
local messages = _G.messages
...
messages.values = {}