1. 01 Feb, 2017 1 commit
    • Jacques-Henri Jourdan's avatar
      Cancelable and IdFree typeclasses. · 71c10187
      Jacques-Henri Jourdan authored
      Cancelable elements are a new way of proving local updates, by
      removing some cancellable element of the global state, provided that
      we own it and we are willing to lose this ownership.
      
      Identity-free elements are an auxiliary that is necessary to prove that
      [Some x] is cancelable.
      
      For technical reasons, these two notions are not defined exactly like
      what one might expect, but also take into account validity. Otherwise,
      an exclusive element would not be cancelable or idfree, which is
      rather confusing.
      71c10187
  2. 27 Jan, 2017 1 commit
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  8. 09 Dec, 2016 2 commits
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  15. 01 Sep, 2016 1 commit
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  17. 20 Aug, 2016 1 commit
    • Robbert Krebbers's avatar
      Remove the requirement that the unit of a CMRA is timeless. · 7975f872
      Robbert Krebbers authored
      This requirement was useful in Iris 2.0: in order to ensure that ownership of
      the physical state was timeless, we required the ghost CMRA to have a timeless
      unit. To avoid having additional type class parameters, or having to extend the
      algebraic hierarchy, we required the units of any CMRA to be timeless.
      
      In Iris 3.0, this issue no longer applies: ownership of the physical state is
      ghost ownership in the global CMRA, whose unit is always timeless.
      
      Thanks to Jeehoon Kang for spotting this unnecessary requirement.
      7975f872
  18. 14 Aug, 2016 1 commit
  19. 27 Jul, 2016 2 commits
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  21. 11 Jul, 2016 1 commit
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  24. 06 Jun, 2016 1 commit
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  26. 28 May, 2016 2 commits
  27. 27 May, 2016 2 commits
  28. 25 May, 2016 2 commits
    • Robbert Krebbers's avatar
      d27b81ff
    • Robbert Krebbers's avatar
      Tweak the algebraic hierarchy. · a3d0a338
      Robbert Krebbers authored
      - Make the carrier argument of the constructors for the canonical structures
        cofeT and cmraT explicit. This way we make sure the carrier is properly
        exposed, instead of some alias of the carrier.
      - Make derived constructions (such as discreteC and discreteR) notations
        instead of definitions. This is yet again to make sure that the carrier is
        properly exposed.
      - Turn DRA into a canonical structure (it used to be a type class).
      
      This fixes some issues, notably it fixes some broken rewrites in algebra/sts
      and it makes canonical structures work properly with dec_agree.
      a3d0a338