Add Octet benchmarks

benches/codec_benchmark.rs

@@ -7,9 +7,38 @@ use criterion::Criterion;
 use rand::Rng;
 use raptorq::SourceBlockEncoder;
 use raptorq::SourceBlockDecoder;
+use raptorq::Octet;
 
 
 fn criterion_benchmark(c: &mut Criterion) {
+    let octet1 = Octet::from(rand::thread_rng().gen_range(1, 255));
+    let octet2 = Octet::from(rand::thread_rng().gen_range(1, 255));
+
+    let octet1_add = octet1.clone();
+    let octet2_add = octet2.clone();
+    c.bench_function("Octet add", move |b| b.iter(|| {
+        octet1_add.clone() + octet2_add.clone()
+    }));
+
+    let octet1_add_ref = octet1.clone();
+    let octet2_add_ref = octet2.clone();
+    c.bench_function("Octet add by ref", move |b| b.iter(|| {
+        &octet1_add_ref + &octet2_add_ref
+    }));
+
+    let octet1_mul = octet1.clone();
+    let octet2_mul = octet2.clone();
+    c.bench_function("Octet mul", move |b| b.iter(|| {
+        octet1_mul.clone() * octet2_mul.clone()
+    }));
+
+    let octet1_mul_ref = octet1.clone();
+    let octet2_mul_ref = octet2.clone();
+    c.bench_function("Octet mul by ref", move |b| b.iter(|| {
+        &octet1_mul_ref * &octet2_mul_ref
+    }));
+
+
     let elements = 10*1024;
     let symbol_size = 512;
     let mut data: Vec<u8> = vec![0; elements];

src/lib.rs

@@ -12,5 +12,6 @@ mod encoder;
 mod decoder;
 
 pub use base::PayloadId;
+pub use octet::Octet;
 pub use encoder::SourceBlockEncoder;
 pub use decoder::SourceBlockDecoder;

src/octet.rs

@@ -125,6 +125,17 @@ impl Add for Octet {
     }
 }
 
+impl<'a, 'b> Add<&'b Octet> for &'a Octet {
+    type Output = Octet;
+
+    fn add(self, other: &'b Octet) -> Octet {
+        Octet {
+            // As defined in section 5.7.2, addition on octets is implemented as bitxor
+            value: self.value ^ other.value
+        }
+    }
+}
+
 impl AddAssign for Octet {
     fn add_assign(&mut self, other: Octet) {
         self.value ^= other.value;