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fix rust gbt priority queue handling

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Mononaut 2023-06-26 17:35:33 -04:00
parent f5e0662517
commit a66c0c88ce
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GPG Key ID: A3F058E41374C04E
2 changed files with 19 additions and 10 deletions
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13
backend/rust-gbt/src/audit_transaction.rs
View File

@ -28,6 +28,7 @@ pub struct AuditTransaction {
// Safety: Must be private to prevent NaN breaking Ord impl.
score: f64,
pub used: bool,
/// whether this transaction has been moved to the "modified" priority queue
pub modified: bool,
pub dirty: bool,
}
@ -132,14 +133,14 @@ impl AuditTransaction {
root_sigops: u32,
cluster_rate: f64,
) -> f64 {
self.ancestors.remove(&root_txid);
self.ancestor_fee -= root_fee;
self.ancestor_weight -= root_weight;
self.ancestor_sigops -= root_sigops;
let old_score = self.score();
self.calc_new_score();
self.dependency_rate = self.dependency_rate.min(cluster_rate);
self.modified = true;
if self.ancestors.remove(&root_txid) {
self.ancestor_fee -= root_fee;
self.ancestor_weight -= root_weight;
self.ancestor_sigops -= root_sigops;
self.calc_new_score();
}
old_score
}
}

16
backend/rust-gbt/src/gbt.rs
View File

@ -35,7 +35,7 @@ impl PartialOrd for TxPriority {
if self.score == other.score {
Some(self.uid.cmp(&other.uid))
} else {
other.score.partial_cmp(&self.score)
self.score.partial_cmp(&other.score)
}
}
}
@ -95,10 +95,13 @@ pub fn gbt(mempool: &mut ThreadTransactionsMap) -> Option<GbtResult> {
let mut failures = 0;
while !mempool_array.is_empty() || !modified.is_empty() {
let next_txid: u32;
let from_modified: bool;
if modified.is_empty() {
next_txid = mempool_array.pop_front()?;
from_modified = false;
} else if mempool_array.is_empty() {
next_txid = modified.pop()?.0;
from_modified = true;
} else {
let next_array_txid = mempool_array.front()?;
let next_modified_txid = modified.peek()?.0;
@ -107,16 +110,20 @@ pub fn gbt(mempool: &mut ThreadTransactionsMap) -> Option<GbtResult> {
match array_tx.cmp(modified_tx) {
std::cmp::Ordering::Equal | std::cmp::Ordering::Greater => {
next_txid = mempool_array.pop_front()?;
from_modified = false;
}
std::cmp::Ordering::Less => {
next_txid = modified.pop()?.0;
from_modified = true;
}
}
}
let next_tx = audit_pool.get(&next_txid)?;
if next_tx.used {
// skip the transaction if it has already been used
// or has been moved to the "modified" priority queue
if next_tx.used || (!from_modified && next_tx.modified) {
continue;
}
@ -293,9 +300,9 @@ fn update_descendants(
// remove root tx as ancestor
let old_score =
descendant.remove_root(root_txid, root_fee, root_weight, root_sigops, cluster_rate);
// update modified priority if score has changed
// remove_root() always sets modified to true
// add to priority queue or update priority if score has changed
if descendant.score() < old_score {
descendant.modified = true;
modified.push_decrease(
descendant.uid,
TxPriority {
@ -304,6 +311,7 @@ fn update_descendants(
},
);
} else if descendant.score() > old_score {
descendant.modified = true;
modified.push_increase(
descendant.uid,
TxPriority {