40 lines
1.1 KiB
Rust
40 lines
1.1 KiB
Rust
use crate::{
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consensus::{ComputedBankState, SwitchForkDecision, Tower},
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progress_map::ProgressMap,
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replay_stage::HeaviestForkFailures,
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};
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use solana_runtime::{bank::Bank, bank_forks::BankForks};
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use std::{
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collections::{HashMap, HashSet},
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sync::{Arc, RwLock},
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};
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pub(crate) struct SelectVoteAndResetForkResult {
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pub vote_bank: Option<(Arc<Bank>, SwitchForkDecision)>,
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pub reset_bank: Option<Arc<Bank>>,
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pub heaviest_fork_failures: Vec<HeaviestForkFailures>,
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}
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pub(crate) trait ForkChoice {
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fn compute_bank_stats(
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&mut self,
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bank: &Bank,
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tower: &Tower,
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progress: &mut ProgressMap,
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computed_bank_state: &ComputedBankState,
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);
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// Returns:
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// 1) The heaviest overall bank
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// 2) The heaviest bank on the same fork as the last vote (doesn't require a
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// switching proof to vote for)
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fn select_forks(
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&self,
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frozen_banks: &[Arc<Bank>],
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tower: &Tower,
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progress: &ProgressMap,
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ancestors: &HashMap<u64, HashSet<u64>>,
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bank_forks: &RwLock<BankForks>,
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) -> (Arc<Bank>, Option<Arc<Bank>>);
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}
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