public static async Task Run()
{
#if DEBUG
// 使用TaskLogger会影响内存和性能，所以仅在调试生成中启用
TaskLogger.LogLevel = TaskLogger.TaskLogLevel.Pending;
#endif
var cts = new CancellationTokenSource(3000);
var tasks = new List <Task>()
{
Task.Delay(2000, cts.Token).Log("2s op"),
Task.Delay(5000, cts.Token).Log("5s op"),
Task.Delay(6000, cts.Token).Log("6s op"),
};
try
{
await Task.WhenAll(tasks);
}
catch (OperationCanceledException e)
{
Console.WriteLine(e);
}
foreach (var entry in TaskLogger.GetLogEntries().OrderBy(u => u.LogTime))
{
Console.WriteLine(entry.ToString());
}
}
public static async Task Go()
{
//A async method, so you can invoke wait method.
#if DEBUG
// Using TaskLogger incurs a memory and performance hit; so turn it on in debug builds
TaskLogger.LogLevel = TaskLogger.TaskLogLevel.Pending;
#endif
// Initiate 3 task; for testing the TaskLogger, we control their duration explicitly
var tasks = new List <Task> {
Task.Delay(2000).Log("2s op"),
Task.Delay(5000).Log("5s op"),
Task.Delay(6000).Log("6s op")
};
try {
// Wait for all tasks but cancel after 3 seconds; only 1 task above should complete in time
// CancellationTokenSource have three constructors, one of is Int32 means that
// a millionsecondDely, another one is TimeSpan.
await Task.WhenAll(tasks).
WithCancellation(new CancellationTokenSource(3000).Token); // Extension method with new argument is passed.
}
catch (OperationCanceledException) { }
// Ask the logger which tasks have not yet completed and sort
// them in order from the one that’s been waiting the longest
foreach (var op in TaskLogger.GetLogEntries().OrderBy(tle => tle.LogTime))
{
Console.WriteLine(op);
}
}
