perf: warm transactions in parallel (#13759)

crates/revm/src/cancelled.rs

@@ -0,0 +1,23 @@
+use alloc::sync::Arc;
+use core::sync::atomic::AtomicBool;
+
+/// A marker that can be used to cancel execution.
+///
+/// If dropped, it will set the `cancelled` flag to true.
+#[derive(Default, Clone, Debug)]
+pub struct Cancelled(Arc<AtomicBool>);
+
+// === impl Cancelled ===
+
+impl Cancelled {
+    /// Returns true if the job was cancelled.
+    pub fn is_cancelled(&self) -> bool {
+        self.0.load(core::sync::atomic::Ordering::Relaxed)
+    }
+}
+
+impl Drop for Cancelled {
+    fn drop(&mut self) {
+        self.0.store(true, core::sync::atomic::Ordering::Relaxed);
+    }
+}

crates/revm/src/lib.rs

@@ -17,6 +17,9 @@ pub mod batch;
 /// Database adapters for payload building.
 pub mod cached;
 
+/// A marker that can be used to cancel execution.
+pub mod cancelled;
+
 /// Contains glue code for integrating reth database into revm's [Database].
 pub mod database;