public SchedulerProvider()
{
Task = new TaskScheduler();
IOCompletion = new IOCompletionScheduler();
Current = new CurrentScheduler();
Immediate = new ImmediateScheduler();
NewThread = new NewThreadScheduler();
ThreadPool = new ThreadPoolScheduler();
}
public SchedulerProvider()
{
Task = new TaskScheduler();
IOCompletion = new IOCompletionScheduler();
Current = new CurrentScheduler();
Immediate = new ImmediateScheduler();
NewThread = new NewThreadScheduler();
ThreadPool = new ThreadPoolScheduler();
}
/**
* Scheduler控制订阅和通知的发送。
* Scheduler包含三个组件：1）一个优先队列存放任务，2）Execution context，用来决定任务在哪执行（线程池，当前线程）3)scheduler的时钟，Task是根据这个时钟调度的，不是系统时钟。
*
* rx中所有的Scheduler实现IScheduler接口。
*
*/
public static void GetSchedulers()
{
//立刻在当前线程上执行
ImmediateScheduler immediate = Scheduler.Immediate;
//在当前线程上尽可能快的执行(先放到队列中，尽快执行)
CurrentThreadScheduler currentThreadScheduler = Scheduler.CurrentThread;
//每次创建一个线程执行
NewThreadScheduler newThreadScheduler = NewThreadScheduler.Default;
//在Task Factory上执行
TaskPoolScheduler taskPoolScheduler = TaskPoolScheduler.Default;
//在当前Dispatcher上执行任务
DispatcherScheduler dispatcherScheduler = DispatcherScheduler.Current;
//在ThreadPool上执行
ThreadPoolScheduler threadPoolScheduler = ThreadPoolScheduler.Instance;
//默认的调度器 其原则是使用最小的并行性，for operators returning an observable with a finite and small number of messages, Rx calls Immediate. For operators returning a potentially large or infinite number of messages, CurrentThread is called. For operators which use timers, ThreadPool is used.
DefaultScheduler defaultScheduler = Scheduler.Default;
}
public Schedulers(DispatcherScheduler dispatcher, DefaultScheduler threadPool, ImmediateScheduler immediate) => (_dispatcher, _threadPool, _immediate) = (dispatcher, threadPool, immediate);
