onexit()

onexit(), processing clean-up work, with a maximum execution time of 5 minutes, which is realized by the user.

function main(){
    Log("Start running, stop after 5 seconds, and execute onexit function!")
    Sleep(1000 * 5)
}

// onexit function implementation
function onexit(){
    var beginTime = new Date().getTime()
    while(true){
        var nowTime = new Date().getTime()
        Log("The program stops counting down..The cleaning starts and has passed:", (nowTime - beginTime) / 1000, "Seconds!")
        Sleep(1000)
    }
}

import time 
def main():
    Log("Start running, stop after 5 seconds, and execute onexit function!")
    Sleep(1000 * 5)

def onexit():
    beginTime = time.time() * 1000
    while True:
        ts = time.time() * 1000
        Log("The program stops counting down.The cleaning starts and has passed:", (nowTime - beginTime) / 1000, "Seconds!")
        Sleep(1000)

void main() {
    Log("Start running, stop after 5 seconds, and execute onexit function!");
    Sleep(1000 * 5);
}

void onexit() {
    auto beginTime = Unix() * 1000;
    while(true) {
        auto ts = Unix() * 1000;
        Log("The program stops counting down.The cleaning starts and has passed:", (nowTime - beginTime) / 1000, "Seconds!");
        Sleep(1000);
    }
}

Test the onexit() function:

function main() {
    if (exchange.GetName().startsWith("Futures_")) {
        Log("The exchange is futures")
        exchange.SetContractType("swap")
    } else {
        Log("The exchange is spot")
    }

    if (IsVirtual()) { 
        try { 
            onTick()
        } catch (e) { 
            Log("error:", e)
        }  
    } else {
        onTick()
    }
}

function onTick() {
    while (true) {
        var ticker = exchange.GetTicker() 
        LogStatus(_D(), ticker ? ticker.Last : "--")
        Sleep(500) 
    } 
}

function onexit() { 
    Log("Execute the sweep function") 
}

def main():
    if exchange.GetName().startswith("Futures_"):
        Log("The exchange is futures")
    else:
        Log("The exchange is spot")

    if IsVirtual():
        try:
            onTick()
        except Exception as e:
            Log(e)
    else:
        onTick()

def onTick():
    while True:
        ticker = exchange.GetTicker()
        LogStatus(_D(), ticker["Last"] if ticker else "--")
        Sleep(500)

def onexit():
    Log("Execute the sweep function")

#include <iostream>
#include <exception>
#include <string>

void onTick() {
    while (true) {
        auto ticker = exchange.GetTicker();
        LogStatus(_D(), ticker);
        Sleep(500);
    } 
}

void main() {
    std::string prefix = "Futures_";
    bool startsWith = exchange.GetName().substr(0, prefix.length()) == prefix;
    if (startsWith) {
        Log("The exchange is futures");
        exchange.SetContractType("swap");
    } else {
        Log("The exchange is spot");
    }

    if (IsVirtual()) {
        try {
            onTick();
        } catch (...) {
            std::cerr << "Caught unknown exception" << std::endl;
        }        
    } else {
        onTick();
    }
}

void onexit() { 
    Log("Execute the sweep function");
}

Since the strategy in the backtesting system is usually designed as an endless loop, the onexit() function implemented in the execution strategy cannot be triggered in the backtesting system. The onexit() function can be triggered by detecting the end mark of the backtesting system (EOF exception).

Backtest System init()