static void Main(string[] args)
{
int items = 10000;
ConcurrentStack <int> stack = new ConcurrentStack <int>();
// Create an action to push items onto the stack
Action pusher = () =>
{
for (int i = 0; i < items; i++)
{
stack.Push(i);
}
};
// Run the action once
pusher();
int result;
if (stack.TryPeek(out result))
{
Console.WriteLine($"TryPeek() saw {result} on top of the stack.");
}
else
{
Console.WriteLine("Could not peek most recently added number.");
}
// Empty the stack
stack.Clear();
if (stack.IsEmpty)
{
Console.WriteLine("Cleared the stack.");
}
// Create an action to push and pop items
Action pushAndPop = () =>
{
Console.WriteLine($"Task started on {Task.CurrentId}");
int item;
for (int i = 0; i < items; i++)
{
stack.Push(i);
}
for (int i = 0; i < items; i++)
{
stack.TryPop(out item);
}
Console.WriteLine($"Task ended on {Task.CurrentId}");
};
// Spin up five concurrent tasks of the action
var tasks = new Task[5];
for (int i = 0; i < tasks.Length; i++)
{
tasks[i] = Task.Factory.StartNew(pushAndPop);
}
// Wait for all the tasks to finish up
Task.WhenAll(tasks).GetAwaiter().GetResult();
if (!stack.IsEmpty)
{
Console.WriteLine("Did not take all the items off the stack");
}
}