local random_seed = function()

in lib/skywalking/util.lua [96:120]

• 23 lines of code
• 6 McCabe index (conditional complexity)

local random_seed = function ()
    local seed
    local frandom = io.open("/dev/urandom", "rb")
    if frandom then
        local str = frandom:read(4)
        frandom:close()
        if str then
            local s = 0
            for i = 1, 4 do
                s = 256 * s + str:byte(i)
            end
            seed = s
        end
    end

    if not seed then
        if _M.is_ngx_lua then
            seed = ngx.now() * 1000 + ngx.worker.pid()
        else
            seed = os.clock()
        end
    end

    return seed
end