static void Main(string[] args)
{
// create the bank account instance
BankAccount account = new BankAccount();
// create an array of tasks
Task<int>[] tasks = new Task<int>[10];
for (int i = 0; i < 10; i++) {
// create a new task
tasks[i] = new Task<int>((stateObject) => {
// get the state object
int isolatedBalance = (int)stateObject;
// enter a loop for 1000 balance updates
for (int j = 0; j < 1000; j++) {
// update the balance
isolatedBalance++;
}
// return the updated balance
return isolatedBalance;
}, account.Balance);
}
// set up a multi-task continuation
Task continuation = Task.Factory.ContinueWhenAll<int>(tasks, antecedents => {
// run through and sum the individual balances
foreach (Task<int> t in antecedents) {
account.Balance += t.Result;
}
});
// start the atecedent tasks
foreach (Task t in tasks) {
t.Start();
}
// wait for the contination task to complete
continuation.Wait();
// write out the counter value
Console.WriteLine("Expected value {0}, Balance: {1}", 10000, account.Balance);
// wait for input before exiting
Console.WriteLine("Press enter to finish");
Console.ReadLine();
}
static void Main(string[] args) {
// create the bank account instance
BankAccount account = new BankAccount();
// create an array of tasks
Task<int>[] tasks = new Task<int>[10];
// create the thread local storage
ThreadLocal<int> tls = new ThreadLocal<int>(() => {
Console.WriteLine("Value factory called for value: {0}",
account.Balance);
return account.Balance;
});
for (int i = 0; i < 10; i++) {
// create a new task
tasks[i] = new Task<int>(() => {
// enter a loop for 1000 balance updates
for (int j = 0; j < 1000; j++) {
// update the TLS balance
tls.Value++;
}
// return the updated balance
return tls.Value;
});
// start the new task
tasks[i].Start();
}
// get the result from each task and add it to
// the balance
for (int i = 0; i < 10; i++) {
account.Balance += tasks[i].Result;
}
// write out the counter value
Console.WriteLine("Expected value {0}, Balance: {1}",
10000, account.Balance);
// wait for input before exiting
Console.WriteLine("Press enter to finish");
Console.ReadLine();
}
