Added basic benchmarks (#542)

Author: alex

.github/workflows/ci.yml

@@ -65,7 +65,7 @@ jobs:
           - VERSION: nightly
             FLAGS: "--no-default-features --features std"
           - VERSION: nightly
-            FLAGS: "-Z minimal-versions"
+            FLAGS: "-Z direct-minimal-versions"
 
     steps:
       - uses: actions/[email protected]
@@ -80,12 +80,15 @@ jobs:
         with:
           path: |
             ~/.cargo/bin/
-            ~/.cargo/registry/index/
-            ~/.cargo/registry/cache/
             ~/.cargo/git/db/
             target/
           key: ${{ runner.os }}-${{ matrix.RUST.VERSION }}-cargo-2-${{ hashFiles('**/Cargo.toml') }}
 
+      - run: |
+          cargo generate-lockfile
+          cargo update -p half --precise 2.4.1
+        if: matrix.RUST.VERSION == '1.74.0'
+
       - run: cargo check --workspace --tests ${{ matrix.RUST.FLAGS }}
       - run: cargo test --workspace ${{ matrix.RUST.FLAGS }}
         if: "${{ !matrix.RUST.SKIP_TESTS }}"
@@ -110,6 +113,10 @@ jobs:
           path: target/
           key: ${{ runner.os }}-cargo-5-${{ hashFiles('**/Cargo.toml') }}
 
+      - run: |
+          cargo generate-lockfile
+          cargo update -p half --precise 2.4.1
+
       - run: cargo test
         env:
           RUSTFLAGS: "-Cinstrument-coverage"

Cargo.toml

@@ -22,6 +22,12 @@ itoa = "1.0.11"
 
 [dev-dependencies]
 libc = "0.2.11"
+# TODO: upgrade to 0.6 when we raise MSRV
+criterion = "0.5"
 
 [workspace]
 members = ["asn1_derive", "asn1parse"]
+
+[[bench]]
+name = "basic"
+harness = false

asn1_derive/Cargo.toml

@@ -14,5 +14,5 @@ proc-macro = true
 
 [dependencies]
 proc-macro2 = "1.0.60"
-quote = "1.0"
-syn = "2.0"
+quote = "1.0.25"
+syn = "2.0.8"

benches/basic.rs

@@ -0,0 +1,58 @@
+use criterion::{criterion_group, criterion_main, Criterion};
+use std::hint::black_box;
+
+#[derive(asn1::Asn1Read, asn1::Asn1Write, Debug, PartialEq, Clone)]
+struct BasicStruct<'a> {
+    integer_field: u64,
+    bool_field: bool,
+    octet_string_field: &'a [u8],
+}
+
+fn bench_parse_basic_struct(c: &mut Criterion) {
+    let mut group = c.benchmark_group("parse_basic_struct");
+
+    for size in [0, 100, 10000] {
+        let octet_data = vec![0x42u8; size];
+        let test_data = asn1::write_single(&BasicStruct {
+            integer_field: 42,
+            bool_field: true,
+            octet_string_field: &octet_data,
+        })
+        .unwrap();
+
+        group.bench_with_input(format!("size_{size}"), &size, |b, _| {
+            b.iter(|| {
+                let result = asn1::parse_single::<BasicStruct>(black_box(&test_data)).unwrap();
+                black_box(result)
+            })
+        });
+    }
+    group.finish();
+}
+
+fn bench_serialize_basic_struct(c: &mut Criterion) {
+    let mut group = c.benchmark_group("serialize_basic_struct");
+
+    for size in [0, 100, 10000] {
+        let octet_data = vec![0x42u8; size];
+        let test_struct = BasicStruct {
+            integer_field: 42,
+            bool_field: true,
+            octet_string_field: &octet_data,
+        };
+
+        group.bench_with_input(format!("size_{size}"), &size, |b, _| {
+            b.iter(|| {
+                let result = asn1::write_single(black_box(&test_struct)).unwrap();
+                black_box(result)
+            })
+        });
+    }
+    group.finish();
+}
+criterion_group!(
+    benches,
+    bench_parse_basic_struct,
+    bench_serialize_basic_struct,
+);
+criterion_main!(benches);