Comments (1)
whirly wrote Nov 28, 2013 at 3:20 PM
Just see the source code comments:
//
// BREAKING CHANGE v2.0 > v1.x - No longer escalating exceptions using a throwing
// helper thread.
//
// Our manual escalation based on the creation of a throwing thread was merely to
// expedite the process of throwing the exception that would otherwise occur on the
// finalizer thread at a later point during the app's lifetime.
//
// However, it also prevented applications from observing the exception through
// the TaskScheduler.UnobservedTaskException static event. Also, starting form .NET
// 4.5, the default behavior of the task pool is not to take down the application
// when an exception goes unobserved (done as part of the async/await work). It'd
// be weird for Rx not to follow the platform defaults.
//
// General implementation guidelines for schedulers (in order of importance):
//
// 1. Always thunk through to the underlying infrastructure with a wrapper that's as tiny as possible.
// 2. Global exception notification/handling mechanisms shouldn't be bypassed.
// 3. Escalation behavior for exceptions is left to the underlying infrastructure.
//
// The Catch extension method for IScheduler (added earlier) allows to re-route
// exceptions at stage 2. If the exception isn't handled at the Rx level, it
// propagates by means of a rethrow, falling back to behavior in 3.
//
from reactive.
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from reactive.