feat: Remove state sorting, no_std ci,remove rayon

.github/workflows/ci.yml

@@ -17,13 +17,18 @@ jobs:
 
       - name: Install toolchain
         uses: dtolnay/rust-toolchain@stable
+        with:
+          targets: riscv32imac-unknown-none-elf
 
       - uses: Swatinem/rust-cache@v2
         with:
           cache-on-failure: true
 
       - name: cargo test
         run: cargo test --workspace --all-features
+
+      - name: cargo check no_std
+        run: cargo check --target riscv32imac-unknown-none-elf --no-default-features
 
   lint:
     name: Lint

crates/revm/Cargo.toml

@@ -29,9 +29,6 @@ ethers-providers = { version = "2.0", optional = true }
 ethers-core = { version = "2.0", optional = true }
 futures = { version = "0.3.27", optional = true }
 
-# parallel execution inside state.
-rayon = { version = "1.7", optional = true }
-
 [dev-dependencies]
 hex-literal = "0.4"
 ethers-contract = { version = "2.0.10", default-features = false }
@@ -58,7 +55,7 @@ optional_block_gas_limit = ["revm-interpreter/optional_block_gas_limit"]
 optional_eip3607 = ["revm-interpreter/optional_eip3607"]
 optional_gas_refund = ["revm-interpreter/optional_gas_refund"]
 optional_no_base_fee = ["revm-interpreter/optional_no_base_fee"]
-std = ["revm-interpreter/std", "rayon"]
+std = ["revm-interpreter/std"]
 ethersdb = ["std", "tokio", "futures", "ethers-providers", "ethers-core"]
 serde = ["dep:serde", "dep:serde_json", "revm-interpreter/serde"]
 arbitrary = ["revm-interpreter/arbitrary"]

crates/revm/src/db.rs

@@ -1,15 +1,14 @@
 pub mod emptydb;
-pub mod in_memory_db;
-
 #[cfg(feature = "ethersdb")]
 pub mod ethersdb;
-#[cfg(feature = "ethersdb")]
-pub use ethersdb::EthersDB;
-
-#[cfg(feature = "std")]
+pub mod in_memory_db;
 pub mod states;
 
-#[cfg(feature = "std")]
+pub use crate::primitives::db::*;
+pub use emptydb::{EmptyDB, EmptyDBTyped};
+#[cfg(feature = "ethersdb")]
+pub use ethersdb::EthersDB;
+pub use in_memory_db::*;
 pub use states::{
     AccountRevert, AccountStatus, BundleAccount, BundleState, CacheState, DBBox,
     OriginalValuesKnown, PlainAccount, RevertToSlot, State, StateBuilder, StateDBBox,
@@ -20,8 +19,3 @@ pub use states::{
 compile_error!(
     "`web3db` feature is deprecated, drop-in replacement can be found with feature `ethersdb`"
 );
-
-pub use crate::primitives::db::*;
-pub use in_memory_db::*;
-
-pub use emptydb::{EmptyDB, EmptyDBTyped};

crates/revm/src/db/states/bundle_account.rs

@@ -270,7 +270,7 @@ impl BundleAccount {
                             // and insert it inside revert.
 
                             let previous_storage = if transition.storage_was_destroyed {
-                                let mut storage = std::mem::take(&mut self.storage)
+                                let mut storage = core::mem::take(&mut self.storage)
                                     .into_iter()
                                     .map(|t| (t.0, RevertToSlot::Some(t.1.present_value)))
                                     .collect::<HashMap<_, _>>();

crates/revm/src/db/states/bundle_state.rs

@@ -3,13 +3,15 @@ use super::{
     reverts::{AccountInfoRevert, Reverts},
     AccountRevert, AccountStatus, BundleAccount, PlainStateReverts, RevertToSlot, TransitionState,
 };
-use rayon::slice::ParallelSliceMut;
+use alloc::{
+    collections::{BTreeMap, BTreeSet},
+    vec::Vec,
+};
+use core::ops::RangeInclusive;
 use revm_interpreter::primitives::{
     hash_map::{self, Entry},
-    AccountInfo, Bytecode, HashMap, StorageSlot, B160, B256, KECCAK_EMPTY, U256,
+    AccountInfo, Bytecode, HashMap, HashSet, StorageSlot, B160, B256, KECCAK_EMPTY, U256,
 };
-use std::collections::{BTreeMap, BTreeSet, HashSet};
-use std::ops::RangeInclusive;
 
 /// This builder is used to help to facilitate the initialization of `BundleState` struct
 #[derive(Debug)]
@@ -438,8 +440,8 @@ impl BundleState {
         self.reverts.push(reverts);
     }
 
-    /// Consume the bundle state and return sorted plain state.
-    pub fn into_plain_state_sorted(self, is_value_known: OriginalValuesKnown) -> StateChangeset {
+    /// Consume the bundle state and return plain state.
+    pub fn into_plain_state(self, is_value_known: OriginalValuesKnown) -> StateChangeset {
         // pessimistically pre-allocate assuming _all_ accounts changed.
         let state_len = self.state.len();
         let mut accounts = Vec::with_capacity(state_len);
@@ -477,7 +479,6 @@ impl BundleState {
             }
 
             if !account_storage_changed.is_empty() || was_destroyed {
-                account_storage_changed.sort_by(|a, b| a.0.cmp(&b.0));
                 // append storage changes to account.
                 storage.push(PlainStorageChangeset {
                     address,
@@ -486,18 +487,12 @@ impl BundleState {
                 });
             }
         }
-
-        accounts.par_sort_unstable_by(|a, b| a.0.cmp(&b.0));
-        storage.par_sort_unstable_by(|a, b| a.address.cmp(&b.address));
-
-        let mut contracts = self
+        let contracts = self
             .contracts
             .into_iter()
             // remove empty bytecodes
             .filter(|(b, _)| *b != KECCAK_EMPTY)
             .collect::<Vec<_>>();
-        contracts.par_sort_unstable_by(|a, b| a.0.cmp(&b.0));
-
         StateChangeset {
             accounts,
             storage,
@@ -506,12 +501,12 @@ impl BundleState {
     }
 
     /// Consume the bundle state and split it into reverts and plain state.
-    pub fn into_sorted_plain_state_and_reverts(
+    pub fn into_plain_state_and_reverts(
         mut self,
         is_value_known: OriginalValuesKnown,
     ) -> (StateChangeset, PlainStateReverts) {
         let reverts = self.take_all_reverts();
-        let plain_state = self.into_plain_state_sorted(is_value_known);
+        let plain_state = self.into_plain_state(is_value_known);
         (plain_state, reverts.into_plain_state_reverts())
     }
 

crates/revm/src/db/states/cache.rs

@@ -1,7 +1,9 @@
 use super::{
     plain_account::PlainStorage, transition_account::TransitionAccount, CacheAccount, PlainAccount,
 };
+use alloc::vec::Vec;
 use revm_interpreter::primitives::{AccountInfo, Bytecode, HashMap, State as EVMState, B160, B256};
+
 /// Cache state contains both modified and original values.
 ///
 /// Cache state is main state that revm uses to access state.

crates/revm/src/db/states/changes.rs

@@ -1,17 +1,20 @@
 use super::RevertToSlot;
+use alloc::vec::Vec;
 use revm_interpreter::primitives::{AccountInfo, Bytecode, B160, B256, U256};
 
-/// Sorted accounts/storages/contracts for inclusion into database.
+/// accounts/storages/contracts for inclusion into database.
 /// Structure is made so it is easier to apply directly to database
 /// that mostly have separate tables to store account/storage/contract data.
+///
+/// Note: that data is **not** sorted. Some database benefit of faster inclusion
+/// and smaller footprint if data is inserted in sorted order.
 #[derive(Clone, Debug, Default)]
 pub struct StateChangeset {
-    /// Vector of account presorted by address, with removed contracts bytecode
+    /// Vector of **not** sorted accounts information.
     pub accounts: Vec<(B160, Option<AccountInfo>)>,
-    /// Vector of storage presorted by address
-    /// First bool is indicator if storage needs to be dropped.
+    /// Vector of **not** sorted storage.
     pub storage: Vec<PlainStorageChangeset>,
-    /// Vector of contracts presorted by bytecode hash
+    /// Vector of contracts by bytecode hash. **not** sorted.
     pub contracts: Vec<(B256, Bytecode)>,
 }
 
@@ -37,20 +40,20 @@ pub struct PlainStorageRevert {
     /// state of this storage from database (And moving it to revert).
     pub wiped: bool,
     /// Contains the storage key and old values of that storage.
-    /// Assume they are sorted by the key.
+    /// Reverts are **not** sorted.
     pub storage_revert: Vec<(U256, RevertToSlot)>,
 }
 
 /// Plain state reverts are used to easily store reverts into database.
 ///
-/// Note that accounts are assumed sorted by address.
+/// Note that accounts are assumed **not** sorted.
 #[derive(Clone, Debug, Default)]
 pub struct PlainStateReverts {
-    /// Vector of account presorted by address, with removed contracts bytecode
+    /// Vector of account with removed contracts bytecode
     ///
-    /// Note: AccountInfo None means that account needs to be removed.
+    /// Note: If AccountInfo is None means that account needs to be removed.
     pub accounts: Vec<Vec<(B160, Option<AccountInfo>)>>,
-    /// Vector of storage presorted by address
+    /// Vector of storage with its address.
     pub storage: Vec<Vec<PlainStorageRevert>>,
 }
 

crates/revm/src/db/states/reverts.rs

@@ -2,8 +2,8 @@ use super::{
     changes::PlainStorageRevert, AccountStatus, BundleAccount, PlainStateReverts,
     StorageWithOriginalValues,
 };
+use alloc::vec::Vec;
 use core::ops::{Deref, DerefMut};
-use rayon::slice::ParallelSliceMut;
 use revm_interpreter::primitives::{AccountInfo, HashMap, B160, U256};
 
 /// Contains reverts of multiple account in multiple transitions (Transitions as a block).
@@ -58,17 +58,13 @@ impl Reverts {
                     AccountInfoRevert::DoNothing => (),
                 }
                 if revert_account.wipe_storage || !revert_account.storage.is_empty() {
-                    let mut account_storage =
-                        revert_account.storage.into_iter().collect::<Vec<_>>();
-                    account_storage.par_sort_unstable_by(|a, b| a.0.cmp(&b.0));
                     storage.push(PlainStorageRevert {
                         address,
                         wiped: revert_account.wipe_storage,
-                        storage_revert: account_storage,
+                        storage_revert: revert_account.storage.into_iter().collect::<Vec<_>>(),
                     });
                 }
             }
-            accounts.par_sort_unstable_by(|a, b| a.0.cmp(&b.0));
             state_reverts.accounts.push(accounts);
             state_reverts.storage.push(storage);
         }

crates/revm/src/db/states/state.rs

@@ -1,9 +1,13 @@
 use super::{
     bundle_state::BundleRetention, cache::CacheState, plain_account::PlainStorage, BundleState,
-    CacheAccount, TransitionState,
+    CacheAccount, StateBuilder, TransitionAccount, TransitionState,
+};
+use crate::db::EmptyDB;
+use alloc::{
+    boxed::Box,
+    collections::{btree_map, BTreeMap},
+    vec::Vec,
 };
-use crate::{db::EmptyDB, StateBuilder, TransitionAccount};
-use alloc::collections::{btree_map, BTreeMap};
 use revm_interpreter::primitives::{
     db::{Database, DatabaseCommit},
     hash_map, Account, AccountInfo, Bytecode, HashMap, B160, B256, BLOCK_HASH_HISTORY, U256,
@@ -200,7 +204,7 @@ impl<DB: Database> State<DB> {
     ///
     /// this will panic.
     pub fn take_bundle(&mut self) -> BundleState {
-        std::mem::take(self.bundle_state.as_mut().unwrap())
+        core::mem::take(self.bundle_state.as_mut().unwrap())
     }
 }
 

crates/revm/src/db/states/transition_state.rs

@@ -1,4 +1,5 @@
 use super::TransitionAccount;
+use alloc::vec::Vec;
 use revm_interpreter::primitives::{hash_map::Entry, HashMap, B160};
 
 #[derive(Clone, Debug, Eq, PartialEq)]