Infinite loop in release mode
.net, c#, multithreading
Solution
My guess would be processor caching of the `stop` variable on the main thread. In debug mode the memory model is stricter because the debugger needs to be able to provide a sensible view of the variable's state across all threads.
Try making a field and marking it as volatile:
volatile bool stop = false;
static void Main(string[] args)
{
new Thread(() =>
{
Thread.Sleep(1000);
stop = true;
Console.WriteLine("Set \"stop\" to true.");
}).Start();
Console.WriteLine("Entering loop.");
while (!stop)
{
}
Console.WriteLine("Done.");
}
Problem
When I run the following code in debug mode, it'll successfully finish and exit. However, if I run the following code in release mode, it'll get stuck in an infinite loop and never finish. ``` static void Main(string[] args) { bool stop = false; new Thread(() => { Thread.Sleep(1000); stop = true; Console.WriteLine("Set \"stop\" to true."); }).Start(); Console.WriteLine("Entering loop."); while (!stop) { } Console.WriteLine("Done."); } ``` Which optimization is causing it to get stuck in an infinite loop?