inikolaev

public class ProfileIdle {
    static void work() {
        double sum = 0;
        for (int i = 0; i < 200000000; i++) {
            sum += Math.atan(i);
        }

        System.out.println(sum);
    }

inikolaev

import java.util.concurrent.locks.ReentrantReadWriteLock
import kotlin.concurrent.read
import kotlin.concurrent.write

fun lockWithoutUpgrade() {
    val lock = ReentrantReadWriteLock()

    println("Acquire read lock")
    lock.readLock().lock()
        println("Inside read lock")