overkill with tokio

Cargo.toml

@@ -36,6 +36,7 @@ serde = { version = "1.0.197", optional = true, features = ["serde_derive"] }
 serde_json = { version = "1.0.114", optional = true }
 # serde_with = "3.7.0"
 thiserror = "1.0.58"
+tokio = { version = "1.37.0", features = ["macros", "rt", "rt-multi-thread", "time"] }
 
 [[bin]]
 name = "wordlec"

src/bench/builtin.rs

@@ -1,23 +1,18 @@
-use std::sync::{Arc, Mutex, RwLock};
-use std::thread::JoinHandle;
+use std::sync::{Arc, RwLock};
 
 use libpt::log::info;
 
-use crate::error::{BenchError, Error, WResult};
-use crate::game::{self, Game, GameBuilder};
+use crate::game::{self, GameBuilder};
 use crate::solve::Solver;
 use crate::wlist::WordList;
 
 use super::{Benchmark, Report};
 
-use rayon::prelude::*;
-
 #[derive(Debug)]
 pub struct BuiltinBenchmark<'wl, WL: WordList, SL: Solver<'wl, WL>> {
     solver: SL,
     builder: GameBuilder<'wl, WL>,
     report: Arc<RwLock<Report>>,
-    benchth: Option<JoinHandle<()>>,
 }
 
 impl<'wl, WL, SL> Benchmark<'wl, WL, SL> for BuiltinBenchmark<'wl, WL, SL>
@@ -43,7 +38,6 @@ where
             solver,
             report: Arc::new(RwLock::new(Report::new(builder.build()?))),
             builder,
-            benchth: None,
         })
     }
     fn solver(&self) -> SL {
@@ -66,26 +60,4 @@ where
     fn report(&'wl self) -> super::Report {
         self.report.read().expect("lock is poisoned").clone()
     }
-
-    fn start(&'wl self, n: usize) -> WResult<()> {
-        let report = self.report_shared(); // FIXME: needs to keep self borrowed for some reason?
-        let solver = self.solver();
-        let builder = self.builder();
-        let benchth = std::thread::spawn({
-            move || {
-                // TODO: do the stuff
-                report.write().expect("lock is poisoned").finalize();
-            }
-        });
-
-        // self.benchth = Some(benchth);
-        Ok(())
-    }
-
-    fn is_finished(&self) -> Option<bool> {
-        match &self.benchth {
-            Some(th) => Some(th.is_finished()),
-            None => None,
-        }
-    }
 }

src/bench/mod.rs

@@ -1,7 +1,6 @@
 use std::fmt::Debug;
-use std::sync::{Arc, Mutex, RwLock};
+use std::sync::{Arc, RwLock};
 
-use libpt::log::debug;
 use rayon::prelude::*;
 
 use crate::error::WResult;
@@ -42,13 +41,12 @@ where
     fn play(&'wl self) -> WResult<GuessResponse> {
         self.solver_ref().play(&mut self.make_game()?)
     }
-    fn start(&'wl self, n: usize) -> WResult<()>;
-    fn is_finished(&self) -> Option<bool>;
     // TODO: add some interface to get reports while the benchmark runs
     // TODO: make the benchmark optionally multithreaded
     // NOTE: This is blocking, use start to let it run in another thread
-    #[deprecated]
-    fn bench(&'wl self, n: usize) -> WResult<Report> {
+    // HACK: Shame on me, but I cannot find out how to share the data over threads, so that we can
+    // make this a start function and just poll records while rayon does the benching.
+    async fn bench(&'wl self, n: usize) -> WResult<Report> {
         let report = self.report_shared();
         let this = std::sync::Arc::new(self);
 

src/bin/bench/cli.rs

@@ -45,7 +45,8 @@ struct Cli {
     threads: usize,
 }
 
-fn main() -> anyhow::Result<()> {
+#[tokio::main]
+async fn main() -> anyhow::Result<()> {
     let cli = Cli::parse();
     if cli.verbose {
         Logger::build_mini(Some(Level::DEBUG))?;
@@ -60,15 +61,32 @@ fn main() -> anyhow::Result<()> {
         .max_steps(cli.max_steps)
         .precompute(cli.precompute);
     let solver: AnyBuiltinSolver<'_, BuiltinWList> = cli.solver.to_solver(&wl);
-    let mut bench = BuiltinBenchmark::build(&wl, solver, builder, cli.threads)?;
+    let bench = BuiltinBenchmark::build(&wl, solver, builder, cli.threads)?;
     trace!("{bench:#?}");
-    let n = cli.n;
-    bench.start(n)?;
 
-    while bench.is_finished().is_some_and(|b| b) {
+    loop {
+        match tokio::time::timeout(
+            tokio::time::Duration::from_millis(10),
+            bench.bench(cli.n),
+        )
+        .await
+        {
+            Ok(result) => {
+                match result {
+                    Ok(final_report) => {
+                        println!("{}", final_report);
+                    }
+                    Err(err) => {
+                        error!("error while benchmarking: {err:#?}");
+                    }
+                }
+                break;
+            }
+            Err(_timeout) => {
                 println!("{}", bench.report());
             }
-
+        }
+    }
 
     // FIXME: Rustc thinks wl is borrowed at this point, but it is not!!!!! Or at least it should
     // not be