test(concurrency): multithreaded test for decrease_validation_index

crates/blockifier/src/concurrency/flow_test.rs

@@ -0,0 +1,96 @@
+use std::collections::HashMap;
+use std::sync::Arc;
+
+use rstest::rstest;
+use starknet_api::core::{ContractAddress, PatriciaKey};
+use starknet_api::hash::{StarkFelt, StarkHash};
+use starknet_api::stark_felt;
+
+use crate::concurrency::scheduler::{Scheduler, Task};
+use crate::concurrency::test_utils::{
+    contract_address, safe_versioned_state_for_testing, DEFAULT_CHUNK_SIZE,
+};
+use crate::state::cached_state::{ContractClassMapping, StateMaps};
+use crate::state::state_api::StateReader;
+use crate::storage_key;
+use crate::test_utils::dict_state_reader::DictStateReader;
+
+// TODO(barak, 01/07/2024): Check txs with "reads".
+// TODO(barak, 01/07/2024): Check cached_initial_values in versioned_state_proxy flow test.
+#[rstest]
+fn scheduler_flow_test(contract_address: ContractAddress) {
+    // Simulate DEFAULT_CHUNK_SIZE txs. Each reads (CONTRACT_ADDRESS, STORAGE_KEY) and writes its tx
+    // index inside the chunk to the same storage cell.
+    let scheduler = Arc::new(Scheduler::new(DEFAULT_CHUNK_SIZE));
+    let storage_key = storage_key!(27_u8);
+    let storage_initial_value = stark_felt!(128_u8);
+    let versioned_state = safe_versioned_state_for_testing(DictStateReader {
+        storage_view: HashMap::from([((contract_address, storage_key), storage_initial_value)]),
+        ..Default::default()
+    });
+    let mut handles = vec![];
+
+    let num_threads = 2_u8.pow(5);
+    for _ in 0..num_threads {
+        let scheduler = Arc::clone(&scheduler);
+        let versioned_state = versioned_state.clone();
+        let handle = std::thread::spawn(move || {
+            let mut task = Task::NoTask;
+            while !scheduler.done() {
+                match task {
+                    Task::ExecutionTask(tx_index) => {
+                        let versioned_state_proxy = versioned_state.pin_version(tx_index);
+                        let storage_new_value: u8 = tx_index.try_into().unwrap();
+                        let write_set = StateMaps {
+                            storage: HashMap::from([(
+                                (contract_address, storage_key),
+                                stark_felt!(storage_new_value),
+                            )]),
+                            ..Default::default()
+                        };
+                        versioned_state_proxy
+                            .apply_writes(&write_set, &ContractClassMapping::default());
+                        scheduler.finish_execution(tx_index);
+                        task = Task::NoTask;
+                    }
+                    Task::ValidationTask(tx_index) => {
+                        let versioned_state_proxy = versioned_state.pin_version(tx_index);
+                        let current_cell_value = versioned_state_proxy
+                            .get_storage_at(contract_address, storage_key)
+                            .unwrap();
+                        let read_set = StateMaps {
+                            storage: HashMap::from([(
+                                (contract_address, storage_key),
+                                stark_felt!(current_cell_value),
+                            )]),
+                            ..Default::default()
+                        };
+                        let read_set_valid = versioned_state_proxy.validate_read_set(&read_set);
+                        let aborted = !read_set_valid && scheduler.try_validation_abort(tx_index);
+                        if aborted {
+                            versioned_state_proxy.delete_writes(tx_index)
+                        }
+                        task = scheduler.finish_validation(tx_index, aborted);
+                    }
+                    Task::NoTask => {
+                        task = scheduler.next_task();
+                    }
+                    Task::Done => (),
+                }
+            }
+        });
+        handles.push(handle);
+    }
+    for handle in handles {
+        handle.join().unwrap();
+    }
+
+    let chunk_size_as_u8: u8 = DEFAULT_CHUNK_SIZE.try_into().unwrap();
+    let final_storage_value = chunk_size_as_u8 - 1;
+    let storage_writes = versioned_state.state().get_writes(DEFAULT_CHUNK_SIZE).storage;
+    assert_eq!(
+        *storage_writes.get(&(contract_address, storage_key)).unwrap(),
+        stark_felt!(final_storage_value)
+    );
+    dbg!(storage_writes.get(&(contract_address, storage_key)).unwrap());
+}

crates/blockifier/src/concurrency/scheduler.rs

@@ -8,6 +8,10 @@ use crate::concurrency::TxIndex;
 #[path = "scheduler_test.rs"]
 pub mod test;
 
+#[cfg(test)]
+#[path = "flow_test.rs"]
+pub mod flow_test;
+
 #[derive(Debug, Default)]
 pub struct Scheduler {
     execution_index: AtomicUsize,
@@ -53,10 +57,6 @@ impl Scheduler {
         let index_to_validate = self.validation_index.load(Ordering::Acquire);
         let index_to_execute = self.execution_index.load(Ordering::Acquire);
 
-        if min(index_to_validate, index_to_execute) >= self.chunk_size {
-            return Task::NoTask;
-        }
-
         if index_to_validate < index_to_execute {
             if let Some(tx_index) = self.next_version_to_validate() {
                 return Task::ValidationTask(tx_index);

crates/blockifier/src/concurrency/scheduler_test.rs

@@ -6,11 +6,10 @@ use pretty_assertions::assert_eq;
 use rstest::rstest;
 
 use crate::concurrency::scheduler::{Scheduler, Task, TransactionStatus};
+use crate::concurrency::test_utils::DEFAULT_CHUNK_SIZE;
 use crate::concurrency::TxIndex;
 use crate::default_scheduler;
 
-const DEFAULT_CHUNK_SIZE: usize = 100;
-
 #[rstest]
 fn test_new(#[values(0, 1, 32)] chunk_size: usize) {
     let scheduler = Scheduler::new(chunk_size);

crates/blockifier/src/concurrency/versioned_state_proxy.rs

@@ -52,6 +52,17 @@ impl<S: StateReader> VersionedState<S> {
         }
     }
 
+    #[cfg(test)]
+    pub fn get_cached_initial_values(&self) -> StateMaps {
+        StateMaps {
+            storage: self.storage.get_cached_initial_values(),
+            nonces: self.nonces.get_cached_initial_values(),
+            class_hashes: self.class_hashes.get_cached_initial_values(),
+            compiled_class_hashes: self.compiled_class_hashes.get_cached_initial_values(),
+            declared_contracts: HashMap::new(),
+        }
+    }
+
     pub fn commit<T>(&mut self, from_index: TxIndex, parent_state: &mut CachedState<T>)
     where
         T: StateReader,
@@ -175,6 +186,11 @@ impl<S: StateReader> ThreadSafeVersionedState<S> {
     pub fn pin_version(&self, tx_index: TxIndex) -> VersionedStateProxy<S> {
         VersionedStateProxy { tx_index, state: self.0.clone() }
     }
+
+    #[cfg(test)]
+    pub fn state(&self) -> LockedVersionedState<'_, S> {
+        self.0.lock().expect("Failed to acquire state lock.")
+    }
 }
 
 impl<S: StateReader> Clone for ThreadSafeVersionedState<S> {

crates/blockifier/src/concurrency/versioned_storage.rs

@@ -77,4 +77,9 @@ where
         }
         writes
     }
+
+    #[cfg(test)]
+    pub fn get_cached_initial_values(&self) -> HashMap<K, V> {
+        self.cached_initial_values.clone()
+    }
 }