feat(crc): criterion benchmark for crc32

Cargo.lock

@@ -2,6 +2,15 @@
 # It is not intended for manual editing.
 version = 4
 
+[[package]]
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+version = "1.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
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+dependencies = [
+ "memchr",
+]
+
 [[package]]
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@@ -11,6 +20,17 @@ dependencies = [
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 ]
 
+[[package]]
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+dependencies = [
+ "hermit-abi",
+ "libc",
+ "winapi",
+]
+
 [[package]]
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@@ -44,12 +64,24 @@ version = "1.3.2"
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 checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
 
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+
 [[package]]
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@@ -59,6 +91,17 @@ dependencies = [
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 ]
 
+[[package]]
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+dependencies = [
+ "bitflags",
+ "textwrap",
+ "unicode-width",
+]
+
 [[package]]
 name = "cortex-m"
 version = "0.7.7"
@@ -95,6 +138,45 @@ dependencies = [
 [[package]]
 name = "crc"
 version = "0.1.0"
+dependencies = [
+ "criterion",
+]
+
+[[package]]
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+ "cast",
+ "clap",
+ "criterion-plot",
+ "csv",
+ "itertools",
+ "lazy_static",
+ "num-traits",
+ "oorandom",
+ "plotters",
+ "rayon",
+ "regex",
+ "serde",
+ "serde_cbor",
+ "serde_derive",
+ "serde_json",
+ "tinytemplate",
+ "walkdir",
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+
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+dependencies = [
+ "cast",
+ "itertools",
+]
 
 [[package]]
 name = "critical-section"
@@ -102,6 +184,52 @@ version = "1.2.0"
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 checksum = "790eea4361631c5e7d22598ecd5723ff611904e3344ce8720784c93e3d83d40b"
 
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+ "memchr",
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 [[package]]
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@@ -153,6 +281,12 @@ dependencies = [
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 ]
 
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@@ -261,6 +459,18 @@ dependencies = [
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@@ -271,6 +481,34 @@ dependencies = [
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@@ -391,6 +741,15 @@ dependencies = [
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crates/crc/Cargo.toml

@@ -4,3 +4,10 @@ version = "0.1.0"
 edition = "2024"
 
 [dependencies]
+
+[dev-dependencies]
+criterion = "0.3"
+
+[[bench]]
+name = "crc32bench"
+harness = false

crates/crc/benches/crc32bench.rs

@@ -0,0 +1,11 @@
+use crc::{Crc, Crc32};
+use criterion::{Criterion, black_box, criterion_group, criterion_main};
+
+pub fn criterion_benchmark(c: &mut Criterion) {
+    c.bench_function("crc32", |b| {
+        b.iter(|| Crc32::checksum(black_box(&crc::CHECK_DATA)))
+    });
+}
+
+criterion_group!(benches, criterion_benchmark);
+criterion_main!(benches);

crates/crc/src/crc_32.rs

@@ -48,9 +48,11 @@ impl Crc for Crc32 {
     type Input = [u8];
     type Checksum = u32;
 
+    #[inline]
     fn new() -> Self {
         Self(Self::Checksum::default())
     }
+    #[inline]
     fn shift_reg(&mut self) -> &mut Self::Checksum {
         &mut self.0
     }

crates/crc/src/lib.rs

@@ -22,6 +22,7 @@ pub trait Crc: Sized {
     fn new() -> Self;
     fn process(&mut self, data: &Self::Input);
     fn shift_reg(&mut self) -> &mut Self::Checksum;
+    #[inline]
     fn checksum(data: &Self::Input) -> Self::Checksum {
         let mut c = Self::new();
         c.process(data);