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caches vote-state de-serialized from vote accounts (#13795)

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Gossip and other places repeatedly de-serialize vote-state stored in
vote accounts. Ideally the first de-serialization should cache the
result.

This commit adds new VoteAccount type which lazily de-serializes
VoteState from Account data and caches the result internally.

Serialize and Deserialize traits are manually implemented to match
existing code. So, despite changes to frozen_abi, this commit should be
backward compatible.
This commit is contained in:
behzad nouri
2020-11-30 17:18:33 +00:00
committed by GitHub
parent 6203d1c94c
commit e1793e5a13
18 changed files with 433 additions and 198 deletions
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15
sdk/src/stake_weighted_timestamp.rs
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@ -1,7 +1,6 @@
/// A helper for calculating a stake-weighted timestamp estimate from a set of timestamps and epoch
/// stake.
use solana_sdk::{
account::Account,
clock::{Slot, UnixTimestamp},
pubkey::Pubkey,
};
@ -19,9 +18,9 @@ pub enum EstimateType {
Unbounded, // Deprecated. Remove in the Solana v1.6.0 timeframe
}
pub fn calculate_stake_weighted_timestamp(
pub fn calculate_stake_weighted_timestamp<T>(
unique_timestamps: &HashMap<Pubkey, (Slot, UnixTimestamp)>,
stakes: &HashMap<Pubkey, (u64, Account)>,
stakes: &HashMap<Pubkey, (u64, T /*Account|ArcVoteAccount*/)>,
slot: Slot,
slot_duration: Duration,
estimate_type: EstimateType,
@ -44,9 +43,9 @@ pub fn calculate_stake_weighted_timestamp(
}
}
fn calculate_unbounded_stake_weighted_timestamp(
fn calculate_unbounded_stake_weighted_timestamp<T>(
unique_timestamps: &HashMap<Pubkey, (Slot, UnixTimestamp)>,
stakes: &HashMap<Pubkey, (u64, Account)>,
stakes: &HashMap<Pubkey, (u64, T /*Account|ArcVoteAccount*/)>,
slot: Slot,
slot_duration: Duration,
) -> Option<UnixTimestamp> {
@ -71,9 +70,9 @@ fn calculate_unbounded_stake_weighted_timestamp(
}
}
fn calculate_bounded_stake_weighted_timestamp(
fn calculate_bounded_stake_weighted_timestamp<T>(
unique_timestamps: &HashMap<Pubkey, (Slot, UnixTimestamp)>,
stakes: &HashMap<Pubkey, (u64, Account)>,
stakes: &HashMap<Pubkey, (u64, T /*Account|ArcVoteAccount*/)>,
slot: Slot,
slot_duration: Duration,
epoch_start_timestamp: Option<(Slot, UnixTimestamp)>,
@ -135,7 +134,7 @@ fn calculate_bounded_stake_weighted_timestamp(
#[cfg(test)]
pub mod tests {
use super::*;
use solana_sdk::native_token::sol_to_lamports;
use solana_sdk::{account::Account, native_token::sol_to_lamports};
#[test]
fn test_calculate_stake_weighted_timestamp() {