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Use CPU clock timeout for PVF jobs (#6282)

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* Put in skeleton logic for CPU-time-preparation

Still needed:
- Flesh out logic
- Refactor some spots
- Tests

* Continue filling in logic for prepare worker CPU time changes

* Fix compiler errors

* Update lenience factor

* Fix some clippy lints for PVF module

* Fix compilation errors

* Address some review comments

* Add logging

* Add another log

* Address some review comments; change Mutex to AtomicBool

* Refactor handling response bytes

* Add CPU clock timeout logic for execute jobs

* Properly handle AtomicBool flag

* Use `Ordering::Relaxed`

* Refactor thread coordination logic

* Fix bug

* Add some timing information to execute tests

* Add section about the mitigation to the IG

* minor: Change more `Ordering`s to `Relaxed`

* candidate-validation: Fix build errors
This commit is contained in:
Marcin S
2022-11-30 07:17:31 -05:00
committed by GitHub
parent c61860e9be
commit 28a4e90912
17 changed files with 536 additions and 170 deletions
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polkadot/node/core/candidate-validation/src/lib.rs
+2 -2
View File
@@ -638,7 +638,7 @@ trait ValidationBackend {
}
}
async fn precheck_pvf(&mut self, pvf: Pvf) -> Result<(), PrepareError>;
async fn precheck_pvf(&mut self, pvf: Pvf) -> Result<Duration, PrepareError>;
}
#[async_trait]
@@ -664,7 +664,7 @@ impl ValidationBackend for ValidationHost {
.map_err(|_| ValidationError::InternalError("validation was cancelled".into()))?
}
async fn precheck_pvf(&mut self, pvf: Pvf) -> Result<(), PrepareError> {
async fn precheck_pvf(&mut self, pvf: Pvf) -> Result<Duration, PrepareError> {
let (tx, rx) = oneshot::channel();
if let Err(_) = self.precheck_pvf(pvf, tx).await {
return Err(PrepareError::DidNotMakeIt)