timer.lua

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--- @file timer.lua
--- @brief Timer ...
--- @todo TODO docu
---------------------------------

local mod = {}

local dpdk = require "dpdk"

local timer = {}
timer.__index = timer

function mod:new(time)
    return setmetatable({
        time = time or 0,
        stop = dpdk.getTime() + (time or 0)
    }, timer)
end

function timer:running()
    return self.stop > dpdk.getTime()
end

function timer:expired()
    return self.stop <= dpdk.getTime()
end

function timer:timeLeft()
    return self.stop - dpdk.getTime()
end

function timer:reset(time)
    self.stop = dpdk.getTime() + (time or self.time)
end

--- Perform a busy wait on the timer.
-- Returns early if MoonGen is stopped (mg.running() == false).
function timer:busyWait()
    while not self:expired() and dpdk.running() do
    end
    return dpdk.running()
end

--- Perform a non-busy wait on the timer.
--- Might be less accurate than busyWait()
function timer:wait()
    -- TODO: implement
    return self:busyWait()
end

return mod