rt: split internal runtime::Handle concerns #5022
Merged
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The
runtime::Handle
struct is part of the public API but is also used internally. This has created a bit of tension. An earlier patch made defined Handle as a private struct in some cases whenrt
is not enabled.This patch splits out internal handle concerns into a new
scheduler::Handle
type, which will only be internal. This also defines aHandle
type for each scheduler variant. Eventually, the per-schedulerHandle
types will replace the per-schedulerSpawner
types, but more work is needed before we can make that change.