Rust edition 2021 + cargo fmt + cargo upgrade + taplo format

.github/workflows/ci.yaml

@@ -1,11 +1,10 @@
 on:
   push:
     branches:
-      - master
+      - main
   pull_request:
     branches:
-      - master
-      - version-0.4
+      - main
 
 name: tests
 env:

Cargo.toml

@@ -9,56 +9,56 @@ name = "criterion2"
 #
 # * Update version numbers in the book;
 version = "0.5.1"
-edition = "2018"
+edition = "2021"
 
 description = "Statistics-driven micro-benchmarking library"
-homepage    = "https://bheisler.github.io/criterion.rs/book/index.html"
-repository  = "https://github.com/bheisler/criterion.rs"
-readme      = "README.md"
-keywords    = ["criterion", "benchmark"]
-categories  = ["development-tools::profiling"]
-license     = "Apache-2.0 OR MIT"
-exclude     = ["book/*"]
+homepage = "https://bheisler.github.io/criterion.rs/book/index.html"
+repository = "https://github.com/bheisler/criterion.rs"
+readme = "README.md"
+keywords = ["criterion", "benchmark"]
+categories = ["development-tools::profiling"]
+license = "Apache-2.0 OR MIT"
+exclude = ["book/*"]
 
 [dependencies]
-anes           = "0.1.4"
-once_cell      = "1.14"
+anes = "0.1.6"
+once_cell = "1.19"
 criterion-plot = { path = "plot", version = "0.5.0" }
-itertools      = ">=0.10, <=0.12"
-serde          = "1.0"
-serde_json     = "1.0"
-serde_derive   = "1.0"
-ciborium       = "0.2.0"
-clap           = { version = "4", default-features = false, features = ["std", "help"] }
-walkdir        = "2.3"
-tinytemplate   = "1.1"
-cast           = "0.3"
-num-traits     = { version = "0.2", default-features = false, features = ["std"] }
-oorandom       = "11.1"
-regex          = { version = "1.5", default-features = false, features = ["std"] }
+itertools = ">=0.10, <=0.12"
+serde = "1.0"
+serde_json = "1.0"
+serde_derive = "1.0"
+ciborium = "0.2.2"
+clap = { version = "4", default-features = false, features = ["std", "help"] }
+walkdir = "2.5"
+tinytemplate = "1.2"
+cast = "0.3"
+num-traits = { version = "0.2", default-features = false, features = ["std"] }
+oorandom = "11.1"
+regex = { version = "1.10", default-features = false, features = ["std"] }
 
 # Optional dependencies
-rayon = { version = "1.3", optional = true }
-csv = { version = "1.1", optional = true }
+rayon = { version = "1.9", optional = true }
+csv = { version = "1.3", optional = true }
 futures = { version = "0.3", default_features = false, optional = true }
-smol = { version = "1.2", default-features = false, optional = true }
-tokio = { version = "1.0", default-features = false, features = [
+smol = { version = "1.3", default-features = false, optional = true }
+tokio = { version = "1.36", default-features = false, features = [
   "rt",
 ], optional = true }
-async-std = { version = "1.9", optional = true }
+async-std = { version = "1.12", optional = true }
 
 [dependencies.plotters]
-version          = "^0.3.1"
-optional         = true
+version = "^0.3.5"
+optional = true
 default-features = false
-features         = ["svg_backend", "area_series", "line_series"]
+features = ["svg_backend", "area_series", "line_series"]
 
 [dev-dependencies]
-tempfile   = "3.5.0"
-approx     = "0.5.0"
+tempfile = "3.10.1"
+approx = "0.5.1"
 quickcheck = { version = "1.0", default-features = false }
-rand       = "0.8"
-futures    = { version = "0.3", default_features = false, features = ["executor"] }
+rand = "0.8"
+futures = { version = "0.3", default_features = false, features = ["executor"] }
 
 [badges]
 maintenance = { status = "passively-maintained" }
@@ -83,9 +83,9 @@ async = []
 # These features enable built-in support for running async benchmarks on each different async
 # runtime.
 async_futures = ["futures/executor", "async"]
-async_smol    = ["smol", "async"]
-async_tokio   = ["tokio", "async"]
-async_std     = ["async-std", "async"]
+async_smol = ["smol", "async"]
+async_tokio = ["tokio", "async"]
+async_std = ["async-std", "async"]
 
 # This feature _currently_ does nothing except disable a warning message, but in 0.4.0 it will be
 # required in order to have Criterion.rs generate its own plots (as opposed to using cargo-criterion)
@@ -104,7 +104,7 @@ csv_output = ["csv"]
 exclude = ["cargo-criterion"]
 
 [[bench]]
-name    = "bench_main"
+name = "bench_main"
 harness = false
 
 [lib]

bencher_compat/Cargo.toml

@@ -23,4 +23,4 @@ default = []
 name = "bencher_example"
 harness = false
 
-[workspace]
+[workspace]

bencher_compat/benches/bencher_example.rs

@@ -1,22 +1,15 @@
-#[macro_use]
-extern crate criterion_bencher_compat;
-
-use criterion_bencher_compat::Bencher;
-
-fn a(bench: &mut Bencher) {
-    bench.iter(|| {
-        (0..1000).fold(0, |x, y| x + y)
-    })
-}
-
-fn b(bench: &mut Bencher) {
-    const N: usize = 1024;
-    bench.iter(|| {
-        vec![0u8; N]
-    });
-
-    bench.bytes = N as u64;
-}
-
-benchmark_group!(benches, a, b);
-benchmark_main!(benches);
+use criterion_bencher_compat::Bencher;
+
+fn a(bench: &mut Bencher) {
+    bench.iter(|| (0..1000).fold(0, |x, y| x + y))
+}
+
+fn b(bench: &mut Bencher) {
+    const N: usize = 1024;
+    bench.iter(|| vec![0u8; N]);
+
+    bench.bytes = N as u64;
+}
+
+benchmark_group!(benches, a, b);
+benchmark_main!(benches);

bencher_compat/src/lib.rs

@@ -1,8 +1,6 @@
-extern crate criterion;
-
-pub use criterion::Criterion;
 pub use criterion::black_box;
 use criterion::measurement::WallTime;
+pub use criterion::Criterion;
 
 /// Stand-in for `bencher::Bencher` which uses Criterion.rs to perform the benchmark instead.
 pub struct Bencher<'a, 'b> {
@@ -12,7 +10,8 @@ pub struct Bencher<'a, 'b> {
 impl<'a, 'b> Bencher<'a, 'b> {
     /// Callback for benchmark functions to run to perform the benchmark
     pub fn iter<T, F>(&mut self, inner: F)
-        where F: FnMut() -> T
+    where
+        F: FnMut() -> T,
     {
         self.bencher.iter(inner);
     }
@@ -60,4 +59,4 @@ macro_rules! benchmark_main {
     ($($group_name:path,)+) => {
         benchmark_main!($($group_name),+);
     };
-}
+}

benches/benchmarks/async_measurement_overhead.rs

@@ -4,36 +4,28 @@ fn some_benchmark(c: &mut Criterion) {
     let mut group = c.benchmark_group("async overhead");
     group.bench_function("iter", |b| b.to_async(FuturesExecutor).iter(|| async { 1 }));
     group.bench_function("iter_with_setup", |b| {
-        b.to_async(FuturesExecutor)
-            .iter_with_setup(|| (), |_| async { 1 })
+        b.to_async(FuturesExecutor).iter_with_setup(|| (), |_| async { 1 })
     });
     group.bench_function("iter_with_large_setup", |b| {
-        b.to_async(FuturesExecutor)
-            .iter_with_large_setup(|| (), |_| async { 1 })
+        b.to_async(FuturesExecutor).iter_with_large_setup(|| (), |_| async { 1 })
     });
     group.bench_function("iter_with_large_drop", |b| {
-        b.to_async(FuturesExecutor)
-            .iter_with_large_drop(|| async { 1 })
+        b.to_async(FuturesExecutor).iter_with_large_drop(|| async { 1 })
     });
     group.bench_function("iter_batched_small_input", |b| {
-        b.to_async(FuturesExecutor)
-            .iter_batched(|| (), |_| async { 1 }, BatchSize::SmallInput)
+        b.to_async(FuturesExecutor).iter_batched(|| (), |_| async { 1 }, BatchSize::SmallInput)
     });
     group.bench_function("iter_batched_large_input", |b| {
-        b.to_async(FuturesExecutor)
-            .iter_batched(|| (), |_| async { 1 }, BatchSize::LargeInput)
+        b.to_async(FuturesExecutor).iter_batched(|| (), |_| async { 1 }, BatchSize::LargeInput)
     });
     group.bench_function("iter_batched_per_iteration", |b| {
-        b.to_async(FuturesExecutor)
-            .iter_batched(|| (), |_| async { 1 }, BatchSize::PerIteration)
+        b.to_async(FuturesExecutor).iter_batched(|| (), |_| async { 1 }, BatchSize::PerIteration)
     });
     group.bench_function("iter_batched_ref_small_input", |b| {
-        b.to_async(FuturesExecutor)
-            .iter_batched_ref(|| (), |_| async { 1 }, BatchSize::SmallInput)
+        b.to_async(FuturesExecutor).iter_batched_ref(|| (), |_| async { 1 }, BatchSize::SmallInput)
     });
     group.bench_function("iter_batched_ref_large_input", |b| {
-        b.to_async(FuturesExecutor)
-            .iter_batched_ref(|| (), |_| async { 1 }, BatchSize::LargeInput)
+        b.to_async(FuturesExecutor).iter_batched_ref(|| (), |_| async { 1 }, BatchSize::LargeInput)
     });
     group.bench_function("iter_batched_ref_per_iteration", |b| {
         b.to_async(FuturesExecutor).iter_batched_ref(

benches/benchmarks/custom_measurement.rs

@@ -17,10 +17,9 @@ impl ValueFormatter for HalfSecFormatter {
             Throughput::Bytes(bytes) | Throughput::BytesDecimal(bytes) => {
                 format!("{} b/s/2", (bytes as f64) / (value * 2f64 * 10f64.powi(-9)))
             }
-            Throughput::Elements(elems) => format!(
-                "{} elem/s/2",
-                (elems as f64) / (value * 2f64 * 10f64.powi(-9))
-            ),
+            Throughput::Elements(elems) => {
+                format!("{} elem/s/2", (elems as f64) / (value * 2f64 * 10f64.powi(-9)))
+            }
         }
     }
 

benches/benchmarks/external_process.rs

@@ -8,9 +8,7 @@ use std::{
 
 fn create_command() -> Command {
     let mut command = Command::new("python3");
-    command
-        .arg("benches/benchmarks/external_process.py")
-        .arg("10");
+    command.arg("benches/benchmarks/external_process.py").arg("10");
     command
 }
 
@@ -29,21 +27,15 @@ fn python_fibonacci(c: &mut Criterion) {
             .spawn()
             .expect("Unable to start python process");
 
-        let mut stdin = process
-            .stdin
-            .expect("Unable to get stdin for child process");
-        let stdout = process
-            .stdout
-            .expect("Unable to get stdout for child process");
+        let mut stdin = process.stdin.expect("Unable to get stdin for child process");
+        let stdout = process.stdout.expect("Unable to get stdout for child process");
         let mut stdout = BufReader::new(stdout);
         c.bench_function("fibonacci-python", |b| {
             b.iter_custom(|iters| {
                 writeln!(stdin, "{}", iters)
                     .expect("Unable to send iteration count to child process");
                 let mut line = String::new();
-                stdout
-                    .read_line(&mut line)
-                    .expect("Unable to read time from child process");
+                stdout.read_line(&mut line).expect("Unable to read time from child process");
                 let nanoseconds: u64 =
                     u64::from_str(line.trim()).expect("Unable to parse time from child process");
                 Duration::from_nanos(nanoseconds)

benches/benchmarks/sampling_mode.rs

@@ -1,26 +1,20 @@
-use criterion::{criterion_group, Criterion, SamplingMode};
-use std::thread::sleep;
-use std::time::Duration;
-
-fn sampling_mode_tests(c: &mut Criterion) {
-    let mut group = c.benchmark_group("sampling_mode");
-
-    group.sampling_mode(SamplingMode::Auto);
-    group.bench_function("Auto", |bencher| {
-        bencher.iter(|| sleep(Duration::from_millis(0)))
-    });
-
-    group.sampling_mode(SamplingMode::Linear);
-    group.bench_function("Linear", |bencher| {
-        bencher.iter(|| sleep(Duration::from_millis(0)))
-    });
-
-    group.sampling_mode(SamplingMode::Flat);
-    group.bench_function("Flat", |bencher| {
-        bencher.iter(|| sleep(Duration::from_millis(10)))
-    });
-
-    group.finish();
-}
-
-criterion_group!(benches, sampling_mode_tests,);
+use criterion::{criterion_group, Criterion, SamplingMode};
+use std::thread::sleep;
+use std::time::Duration;
+
+fn sampling_mode_tests(c: &mut Criterion) {
+    let mut group = c.benchmark_group("sampling_mode");
+
+    group.sampling_mode(SamplingMode::Auto);
+    group.bench_function("Auto", |bencher| bencher.iter(|| sleep(Duration::from_millis(0))));
+
+    group.sampling_mode(SamplingMode::Linear);
+    group.bench_function("Linear", |bencher| bencher.iter(|| sleep(Duration::from_millis(0))));
+
+    group.sampling_mode(SamplingMode::Flat);
+    group.bench_function("Flat", |bencher| bencher.iter(|| sleep(Duration::from_millis(10))));
+
+    group.finish();
+}
+
+criterion_group!(benches, sampling_mode_tests,);

book/book.toml

@@ -1,10 +1,10 @@
-[book]
-title = "Criterion.rs Documentation"
-description = "User Guide and Other Prose Documentation For Criterion.rs"
-author = "Brook Heisler"
-
-[output.html]
-
-[output.linkcheck]
-#follow-web-links = true
-exclude = [ 'crates\.io' ]
+[book]
+title = "Criterion.rs Documentation"
+description = "User Guide and Other Prose Documentation For Criterion.rs"
+author = "Brook Heisler"
+
+[output.html]
+
+[output.linkcheck]
+#follow-web-links = true
+exclude = ['crates\.io']

macro/Cargo.toml

@@ -25,4 +25,4 @@ criterion = { version = "0.4.0", path = "..", default-features = false }
 [[bench]]
 name = "test_macro_bench"
 
-[workspace]
+[workspace]