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authorKartik K. Agaram <vc@akkartik.com>2017-08-30 21:32:54 -0700
committerKartik K. Agaram <vc@akkartik.com>2017-08-30 21:32:54 -0700
commit53930831c4185c5ccb56864c881acf6d67dd1bd1 (patch)
tree8826f80e35f7e168a1554176ad4108dca1c0fa42 /045closure_name.cc
parentb74744cd5851e034a88d4a335b22a372ebb39237 (diff)
downloadmu-53930831c4185c5ccb56864c881acf6d67dd1bd1.tar.gz
3986 - bring back delimited continuations
They're back after a long hiatus: commit 2295 in Oct 2015.

I'm not convinced anymore that this is actually a correct implementation
of continuations. Issues on at least two fronts:

a) These aren't safe yet. Since continuations can be called multiple
times, we need to disable reclamation of locals inside a continuation.
There may be other type- or memory-safety issues. However, delimited
continuations at least seem possible to make safe. Undelimited
continuations (call/cc) though are permanently out.

b) They may not actually be as powerful as delimited continuations.
Let's see if I can build 'yield' out of these primitives.
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