Question

我想在2个通道之间共享一个全局变量，这个想法是当lane1更新共享变量时，我应该能够在它被调度时获得它在lane2上的更新值。有解决方案吗？

以下代码段： -

shared_variable = 0
local function lane1()
    ..
    shared_variable = shared_variable + 1
end

local function lane2()
    ..
    print(shared_variable)-->shared variable is not getting updated,always prints 0
end

Thread1= lanes.gen("*",{globals = _G},lane1)
Thread2= lanes.gen("*",{globals = _G},lane2)

T1 = Thread1()
T2 = Thread2()

T1:join()
T2:join()

Answer 1

下面是我们可以在Lines之间共享变量的示例实现（使用set和; get方法）

require("lanes")

shared_variable = 0

local linda = lanes.linda()

local function lane1()
    while true do
        shared_variable = shared_variable + 1
        linda:set("var", shared_variable)
    end
end

local function lane2()
    while true do
        local v = linda:get("var")
        print(v)
    end
end

Thread1= lanes.gen("*",{globals = _G},lane1)
Thread2= lanes.gen("*",{globals = _G},lane2)

T1 = Thread1()
T2 = Thread2()

T1:join()
T2:join()

Answer 2

你必须使用lindas自己同步变量 - 这是文档：

http://kotisivu.dnainternet.net/askok/bin/lanes/#lindas

这是您的代码的固定版本：

require("lanes")

shared_variable = 0

local linda = lanes.linda()

local function lane1()
    while true do
        shared_variable = shared_variable + 1
        linda:send("var", shared_variable)
    end
end

local function lane2()
    while true do
        local v = linda:receive("var")
        print(v)
    end
end

Thread1= lanes.gen("*",{globals = _G},lane1)
Thread2= lanes.gen("*",{globals = _G},lane2)

T1 = Thread1()
T2 = Thread2()

T1:join()
T2:join()

在Lua车道之间共享一个全局变量

2 个答案: