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extract prefix_from_pubkey (#25766)

This commit is contained in:
Jeff Washington (jwash) 2022-06-03 14:03:15 -05:00 committed by GitHub
parent a9a94166ef
commit 646bd2e488
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1 changed files with 6 additions and 2 deletions
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8
runtime/src/bank.rs
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@ -5375,6 +5375,11 @@ impl Bank {
true
}
fn prefix_from_pubkey(pubkey: &Pubkey) -> u64 {
const PREFIX_SIZE: usize = mem::size_of::<u64>();
u64::from_be_bytes(pubkey.as_ref()[0..PREFIX_SIZE].try_into().unwrap())
}
/// This is the inverse of pubkey_range_from_partition.
/// return the lowest end_index which would contain this pubkey
pub fn partition_from_pubkey(
@ -5382,7 +5387,6 @@ impl Bank {
partition_count: PartitionsPerCycle,
) -> PartitionIndex {
type Prefix = u64;
const PREFIX_SIZE: usize = mem::size_of::<Prefix>();
const PREFIX_MAX: Prefix = Prefix::max_value();
if partition_count == 1 {
@ -5392,7 +5396,7 @@ impl Bank {
// not-overflowing way of `(Prefix::max_value() + 1) / partition_count`
let partition_width = (PREFIX_MAX - partition_count + 1) / partition_count + 1;
let prefix = u64::from_be_bytes(pubkey.as_ref()[0..PREFIX_SIZE].try_into().unwrap());
let prefix = Self::prefix_from_pubkey(pubkey);
if prefix == 0 {
return 0;
}