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per HF1, split process_final_updates() (#2319)

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tersec 2021-02-14 19:31:01 +00:00 committed by GitHub
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1 changed files with 33 additions and 6 deletions
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39
beacon_chain/spec/state_transition_epoch.nim
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@ -1,5 +1,5 @@
# beacon_chain
# Copyright (c) 2018-2020 Status Research & Development GmbH
# Copyright (c) 2018-2021 Status Research & Development GmbH
# Licensed and distributed under either of
# * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
# * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
@ -544,16 +544,16 @@ func process_slashings*(state: var BeaconState, total_balance: Gwei) {.nbench.}=
let penalty = penalty_numerator div total_balance * increment
decrease_balance(state, index.ValidatorIndex, penalty)
# https://github.com/ethereum/eth2.0-specs/blob/v1.0.0/specs/phase0/beacon-chain.md#final-updates
func process_final_updates*(state: var BeaconState) {.nbench.}=
let
current_epoch = get_current_epoch(state)
next_epoch = current_epoch + 1
# https://github.com/ethereum/eth2.0-specs/blob/dev/specs/phase0/beacon-chain.md#eth1-data-votes-updates
func process_eth1_data_reset(state: var BeaconState) {.nbench.} =
let next_epoch = get_current_epoch(state) + 1
# Reset eth1 data votes
if next_epoch mod EPOCHS_PER_ETH1_VOTING_PERIOD == 0:
state.eth1_data_votes = default(type state.eth1_data_votes)
# https://github.com/ethereum/eth2.0-specs/blob/dev/specs/phase0/beacon-chain.md#effective-balances-updates
func process_effective_balance_updates(state: var BeaconState) {.nbench.} =
# Update effective balances with hysteresis
for index in 0..<state.validators.len:
let balance = state.balances.asSeq()[index]
@ -571,14 +571,28 @@ func process_final_updates*(state: var BeaconState) {.nbench.}=
balance - balance mod EFFECTIVE_BALANCE_INCREMENT,
MAX_EFFECTIVE_BALANCE)
# https://github.com/ethereum/eth2.0-specs/blob/dev/specs/phase0/beacon-chain.md#slashings-balances-updates
func process_slashings_reset(state: var BeaconState) {.nbench.} =
let next_epoch = get_current_epoch(state) + 1
# Reset slashings
state.slashings[int(next_epoch mod EPOCHS_PER_SLASHINGS_VECTOR)] = 0.Gwei
# https://github.com/ethereum/eth2.0-specs/blob/dev/specs/phase0/beacon-chain.md#randao-mixes-updates
func process_randao_mixes_reset(state: var BeaconState) {.nbench.} =
let
current_epoch = get_current_epoch(state)
next_epoch = current_epoch + 1
# Set randao mix
state.randao_mixes[next_epoch mod EPOCHS_PER_HISTORICAL_VECTOR] =
get_randao_mix(state, current_epoch)
# https://github.com/ethereum/eth2.0-specs/blob/dev/specs/phase0/beacon-chain.md#historical-roots-updates
func process_historical_roots_update(state: var BeaconState) {.nbench.} =
# Set historical root accumulator
let next_epoch = get_current_epoch(state) + 1
if next_epoch mod (SLOTS_PER_HISTORICAL_ROOT div SLOTS_PER_EPOCH) == 0:
# Equivalent to hash_tree_root(foo: HistoricalBatch), but without using
# significant additional stack or heap.
@ -587,11 +601,24 @@ func process_final_updates*(state: var BeaconState) {.nbench.}=
state.historical_roots.add hash_tree_root(
[hash_tree_root(state.block_roots), hash_tree_root(state.state_roots)])
# https://github.com/ethereum/eth2.0-specs/blob/dev/specs/phase0/beacon-chain.md#participation-records-rotation
func process_participation_record_updates(state: var BeaconState) {.nbench.} =
# Rotate current/previous epoch attestations - using swap avoids copying all
# elements using a slow genericSeqAssign
state.previous_epoch_attestations.clear()
swap(state.previous_epoch_attestations, state.current_epoch_attestations)
# https://github.com/ethereum/eth2.0-specs/blob/v1.0.0/specs/phase0/beacon-chain.md#final-updates
func process_final_updates*(state: var BeaconState) {.nbench.} =
# This function's a wrapper over the HF1 split/refactored HF1 version. TODO
# remove once test vectors become available for each HF1 function.
process_eth1_data_reset(state)
process_effective_balance_updates(state)
process_slashings_reset(state)
process_randao_mixes_reset(state)
process_historical_roots_update(state)
process_participation_record_updates(state)
# https://github.com/ethereum/eth2.0-specs/blob/v1.0.0/specs/phase0/beacon-chain.md#epoch-processing
proc process_epoch*(state: var BeaconState, updateFlags: UpdateFlags,
cache: var StateCache) {.nbench.} =