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make commit_credits one trip through the rwlock (#4969)

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This commit is contained in:
Rob Walker
2019-07-08 20:46:21 -07:00
committed by GitHub
parent 22ef3c7c54
commit 49250f62aa
2 changed files with 11 additions and 16 deletions
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23
runtime/src/accounts.rs
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@@ -525,25 +525,24 @@ impl Accounts {
/// Commit remaining credit-only changes, regardless of reference count
pub fn commit_credits(&self, ancestors: &HashMap<Fork, usize>, fork: Fork) {
let credit_only_account_locks = self.credit_only_account_locks.read().unwrap();
for (pubkey, credit_only_lock) in credit_only_account_locks.iter() {
let credit = credit_only_lock.credits.load(Ordering::Relaxed);
for (pubkey, lock) in self.credit_only_account_locks.write().unwrap().drain() {
let lock_count = *lock.lock_count.lock().unwrap();
if lock_count != 0 {
warn!(
"dropping credit-only lock on {}, still has {} locks",
pubkey, lock_count
);
}
let credit = lock.credits.load(Ordering::Relaxed);
if credit > 0 {
let mut account = self
.load_slow(ancestors, pubkey)
.load_slow(ancestors, &pubkey)
.map(|(account, _)| account)
.unwrap_or_default();
account.lamports += credit;
self.store_slow(fork, pubkey, &account);
self.store_slow(fork, &pubkey, &account);
}
}
drop(credit_only_account_locks);
self.clear_credit_only_account_locks();
}
pub fn clear_credit_only_account_locks(&self) {
let mut credit_only_account_locks = self.credit_only_account_locks.write().unwrap();
credit_only_account_locks.clear();
}
fn collect_accounts<'a>(