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| author | Sven Tennie <sven.tennie@gmail.com> | 2020-10-31 13:28:54 -0400 |
|---|---|---|
| committer | Marge Bot <ben+marge-bot@smart-cactus.org> | 2021-09-23 15:59:38 -0400 |
| commit | 6f7f59901c047882ba8c9ae8812264f86b12483a (patch) | |
| tree | dbff896e8fb871d947b20c3b58736b82469be89a /distrib | |
| parent | 022d9717d06542c2345e27ef018390a9d034a1f1 (diff) | |
| download | haskell-6f7f59901c047882ba8c9ae8812264f86b12483a.tar.gz | |
Introduce stack snapshotting / cloning (#18741)
Add `StackSnapshot#` primitive type that represents a cloned stack (StgStack).
The cloning interface consists of two functions, that clone either the treads
own stack (cloneMyStack) or another threads stack (cloneThreadStack).
The stack snapshot is offline/cold, i.e. it isn't evaluated any further. This is
useful for analyses as it prevents concurrent modifications.
For technical details, please see Note [Stack Cloning].
Co-authored-by: Ben Gamari <bgamari.foss@gmail.com>
Co-authored-by: Matthew Pickering <matthewtpickering@gmail.com>
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