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  1. May 16, 2023
    • Marcin S.'s avatar
      PVF: Vote invalid on panics in execution thread (after a retry) (#7155) · 82e4dbcc
      Marcin S. authored 
      * PVF: Remove `rayon` and some uses of `tokio`

1. We were using `rayon` to spawn a superfluous thread to do execution, so it was removed.

2. We were using `rayon` to set a threadpool-specific thread stack size, and AFAIK we couldn't do that with `tokio` (it's possible [per-runtime](https://docs.rs/tokio/latest/tokio/runtime/struct.Builder.html#method.thread_stack_size) but not per-thread). Since we want to remove `tokio` from the workers [anyway](https://github.com/paritytech/polkadot/issues/7117), I changed it to spawn threads with the `std::thread` API instead of `tokio`.[^1]

[^1]: NOTE: This PR does not totally remove the `tokio` dependency just yet.

3. Since `std::thread` API is not async, we could no longer `select!` on the threads as futures, so the `select!` was changed to a naive loop.

4. The order of thread selection was flipped to make (3) sound (see note in code).

I left some TODO's related to panics which I'm going to address soon as part of https://github.com/paritytech/polkadot/issues/7045.

* PVF: Vote invalid on panics in execution thread (after a retry)

Also make sure we kill the worker process on panic errors and internal errors to
potentially clear any error states independent of the candidate.

* Address a couple of TODOs

Addresses a couple of follow-up TODOs from
https://github.com/paritytech/polkadot/pull/7153

.

* Add some documentation to implementer's guide

* Fix compile error

* Fix compile errors

* Fix compile error

* Update roadmap/implementers-guide/src/node/utility/candidate-validation.md

Co-authored-by: default avatarAndrei Sandu <[email protected]>

* Address comments + couple other changes (see message)

- Measure the CPU time in the prepare thread, so the observed time is not
  affected by any delays in joining on the thread.

- Measure the full CPU time in the execute thread.

* Implement proper thread synchronization

Use condvars i.e. `Arc::new((Mutex::new(true), Condvar::new()))` as per the std
docs.

Considered also using a condvar to signal the CPU thread to end, in place of an
mpsc channel. This was not done because `Condvar::wait_timeout_while` is
documented as being imprecise, and `mpsc::Receiver::recv_timeout` is not
documented as such. Also, we would need a separate condvar, to avoid this case:
the worker thread finishes its job, notifies the condvar, the CPU thread returns
first, and we join on it and not the worker thread. So it was simpler to leave
this part as is.

* Catch panics in threads so we always notify condvar

* Use `WaitOutcome` enum instead of bool condition variable

* Fix retry timeouts to depend on exec timeout kind

* Address review comments

* Make the API for condvars in workers nicer

* Add a doc

* Use condvar for memory stats thread

* Small refactor

* Enumerate internal validation errors in an enum

* Fix comment

* Add a log

* Fix test

* Update variant naming

* Address a missed TODO

---------

Co-authored-by: default avatarAndrei Sandu <[email protected]>
      82e4dbcc
    • Marcin S.'s avatar
      PVF: Remove `rayon` and some uses of `tokio` (#7153) · b75b137b
      Marcin S. authored
      b75b137b
    • Branislav Kontur's avatar
      [xcm] Foreign global consensus parachain LocationToAccountId converter (#7016) · a5f4c2df
      Branislav Kontur authored 
      

* **Foreign** global consensus parachain LocationToAccount converter

* Review fix

* Added `UniversalLocation` + `ensure_is_remote` handling

* Added unique id to encoding

* Update xcm/xcm-builder/src/location_conversion.rs

Co-authored-by: default avatarGavin Wood <[email protected]>

* Re-export `ensure_is_remote`

* Test

* fmt

* Update xcm/xcm-builder/src/location_conversion.rs

* Update xcm/xcm-builder/src/universal_exports.rs

Co-authored-by: default avatarGavin Wood <[email protected]>

---------

Co-authored-by: parity-processbot <>
Co-authored-by: default avatarGavin Wood <[email protected]>
      a5f4c2df
  3. May 15, 2023
  5. May 13, 2023
  7. May 12, 2023
  9. May 11, 2023
  11. May 10, 2023
  13. May 09, 2023
  15. May 08, 2023
    • Chris Sosnin's avatar
      paras: dismiss `pvf_checking_enabled` configuration (#7138) · 9c08536d
      Chris Sosnin authored 
      * paras: unconditionally precheck pvfs

* Update integration tests

* paras_registrar tests

* runtime benchmark tests

* fix bench

* bypass prechecking in test node

* adjust bench

* ".git/.scripts/commands/bench/bench.sh" runtime polkadot runtime_parachains::paras

* ".git/.scripts/commands/bench/bench.sh" runtime kusama runtime_parachains::paras

* ".git/.scripts/commands/bench/bench.sh" runtime rococo runtime_parachains::paras

* ".git/.scripts/commands/bench/bench.sh" runtime westend runtime_parachains::paras

* use test helper

* fix new test

---------

Co-authored-by: command-bot <>
      9c08536d
    • Oliver Tale-Yazdi's avatar
      Tests can use dbg macro (#7197) · 580111dd
      Oliver Tale-Yazdi authored 
      

There is a deny(clippy::dbg_macro) in the crate root, so newer
Clippy fails here since tests use dbg.
But dbg in tests are fine IMHO.

Signed-off-by: default avatarOliver Tale-Yazdi <[email protected]>
      580111dd
    • Chevdor's avatar
      Add a new template to show the list of host functions (#7158) · 4809bb03
      Chevdor authored 
      * Add a new template to show the list of host functions

* Fix release notes template for host functions

---------

Co-authored-by: parity-processbot <>
      4809bb03
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