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Refactor tree hashing (#861)

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* Pre-allocated tree hash caches

* Add SmallVec to tree hash cache

* Avoid allocation for validator.pubkey

* Avoid iterator which seems to be doing heap alloc

* Add more smallvecs

* MOAR SMALLVEC

* Move non-test code to Hash256 tree hash

* Fix byte ordering error

* Add incomplete but working merkle stream impl

* Fix zero hash error

* Add zero hash fn

* Add MerkleStream comments

* Add smallvec, tidy

* Integrate into tree hash derive

* Update ssz_types tree hash

* Don't heap alloc for mix in length

* Add byte-level streaming to MerkleStream

* Avoid recursion in write method

* Update BLS to MerkleStream

* Fix some not-compiling tests

* Remove debug profiling

* Remove code duplication

* Move beacon state tree hash to new hasher

* Fix failing tests

* Update comments

* Add some fast-paths to tree_hash::merkle_root

* Remove unncessary test

* Rename MerkleStream -> MerkleHasher

* Rename new_with_leaf_count -> with_leaves

* Tidy

* Remove NonZeroUsize

* Remove todo

* Update smallvec
This commit is contained in:
Paul Hauner
2020-03-05 08:07:27 +11:00
committed by GitHub
parent 12999fb06c
commit 7f6ae4c2f5
43 changed files with 1076 additions and 292 deletions
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2
eth2/utils/cached_tree_hash/src/lib.rs
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@@ -3,7 +3,9 @@ mod cache_arena;
mod impls;
#[cfg(test)]
mod test;
use smallvec::SmallVec;
type SmallVec8<T> = SmallVec<[T; 8]>;
pub type CacheArena = cache_arena::CacheArena<Hash256>;
pub use crate::cache::TreeHashCache;