perf(anvil): avoid snapshot cloning when counting ready transactions (#12432)

* perf(anvil): avoid snapshot cloning when counting ready transactions

* Update transactions.rs

Author: phrwlk

crates/anvil/src/eth/pool/mod.rs

@@ -75,7 +75,7 @@ impl Pool {
     /// Returns the number of tx that are ready and queued for further execution
     pub fn txpool_status(&self) -> TxpoolStatus {
         // Note: naming differs here compared to geth's `TxpoolStatus`
-        let pending: u64 = self.ready_transactions().count().try_into().unwrap_or(0);
+        let pending: u64 = self.inner.read().ready_transactions.len().try_into().unwrap_or(0);
         let queued: u64 = self.inner.read().pending_transactions.len().try_into().unwrap_or(0);
         TxpoolStatus { pending, queued }
     }

crates/anvil/src/eth/pool/transactions.rs

@@ -417,6 +417,16 @@ impl ReadyTransactions {
         self.ready_tx.read().contains_key(hash)
     }
 
+    /// Returns the number of ready transactions without cloning the snapshot
+    pub fn len(&self) -> usize {
+        self.ready_tx.read().len()
+    }
+
+    /// Returns true if there are no ready transactions
+    pub fn is_empty(&self) -> bool {
+        self.ready_tx.read().is_empty()
+    }
+
     /// Returns the transaction for the hash if it's in the ready pool but not yet mined
     pub fn get(&self, hash: &TxHash) -> Option<ReadyTransaction> {
         self.ready_tx.read().get(hash).cloned()