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removes OrderedIterator and transaction batch iteration order (#16153)

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In TransactionBatch,
https://github.com/solana-labs/solana/blob/e50f59844/runtime/src/transaction_batch.rs#L4-L11
lock_results[i] is aligned with transactions[iteration_order[i]]:
https://github.com/solana-labs/solana/blob/e50f59844/runtime/src/bank.rs#L2414-L2424
https://github.com/solana-labs/solana/blob/e50f59844/runtime/src/accounts.rs#L788-L817

However load_and_execute_transactions is iterating over
  lock_results[iteration_order[i]]
https://github.com/solana-labs/solana/blob/e50f59844/runtime/src/bank.rs#L2878-L2889
and then returning i as for the index of the retryable transaction.

If iteratorion_order is [1, 2, 0], and i is 0, then:
  lock_results[iteration_order[i]] = lock_results[1]
which corresponds to
  transactions[iteration_order[1]] = transactions[2]
so neither i = 0, nor iteration_order[i] = 1 gives the correct index for the
corresponding transaction (which is 2).

This commit removes OrderedIterator and transaction batch iteration order
entirely. There is only one place in blockstore processor which the
iteration order is not ordinal:
https://github.com/solana-labs/solana/blob/e50f59844/ledger/src/blockstore_processor.rs#L269-L271
It seems like, instead of using an iteration order, that can shuffle entry
transactions in-place.
This commit is contained in:
behzad nouri
2021-03-31 23:59:19 +00:00
committed by GitHub
parent ad7f8e7f23
commit 3f63ed9a72
14 changed files with 161 additions and 352 deletions
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4
programs/bpf/tests/programs.rs
View File

@ -269,7 +269,7 @@ fn process_transaction_and_record_inner(
) -> (Result<(), TransactionError>, Vec<Vec<CompiledInstruction>>) {
let signature = tx.signatures.get(0).unwrap().clone();
let txs = vec![tx];
let tx_batch = bank.prepare_batch(&txs, None);
let tx_batch = bank.prepare_batch(&txs);
let (mut results, _, mut inner, _transaction_logs) = bank.load_execute_and_commit_transactions(
&tx_batch,
MAX_PROCESSING_AGE,
@ -294,7 +294,7 @@ fn process_transaction_and_record_inner(
}
fn execute_transactions(bank: &Bank, txs: &[Transaction]) -> Vec<ConfirmedTransaction> {
let batch = bank.prepare_batch(txs, None);
let batch = bank.prepare_batch(txs);
let mut timings = ExecuteTimings::default();
let mut mint_decimals = HashMap::new();
let tx_pre_token_balances = collect_token_balances(&bank, &batch, &mut mint_decimals);