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rust-bitcoin-unsafe-fast
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Remove quadratic algorithm 

Currently we loop over transaction inputs within a loop over transaction
inputs - ouch.

Cache the `use_segwit_serialization` outside the iteration loop.

Fix: #2357
This commit is contained in:
Tobin C. Harding 2024-01-19 06:57:31 +11:00
parent 9eec1082ec
commit a338a61cc3
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1 changed files with 3 additions and 2 deletions
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5
bitcoin/src/blockdata/transaction.rs
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@ -773,8 +773,9 @@ impl Transaction {
#[inline]
pub fn total_size(&self) -> usize {
let mut size: usize = 4; // Serialized length of a u32 for the version number.
let use_segwit = self.use_segwit_serialization();
if self.use_segwit_serialization() {
if use_segwit {
size += 2; // 1 byte for the marker and 1 for the flag.
}
@ -783,7 +784,7 @@ impl Transaction {
.input
.iter()
.map(|input| {
if self.use_segwit_serialization() {
if use_segwit {
input.total_size()
} else {
input.base_size()