Calls an user provided delegate. The delegate is called from within a
separate thread and it should not do anything non-thread safe (for example,
using GC must be avoided) from the runtime's perspective. Delegate receives
a reference to the per-thread context which it can use.
Calls an user provided delegate. The delegate is called from within a separate thread and it should not do anything non-thread safe (for example, using GC must be avoided) from the runtime's perspective. Delegate receives a reference to the per-thread context which it can use.