Re:Why Continuations Are Coming to Java
by jimmaswell on Tuesday July 02, 2019 @12:08PM
(#20336467)
That sounds like the runtime has more constraints thus it can make more assumptions, not less constraints, while the OS one must be more general.
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It depends on your perspective.
The OS one has more _requirements_ (the number of "it must do..." is much higher), which constrains it's design space much more. I think you can call that as "having more constraints" because it must meet more needs to be even viable as a solution.
The number of requirements for JVM threads is much lower, thus less constraining, allowing it more freedom to implement solutions that can meet its narrower window of features.
Constraints on the user free the platform. Freedoms for the user constrain the platform.
If you are interested in someone pontificating about this at length, see https://youtu.be/GqmsQeSzMdw