Added Benchmark that tests serialization and deserialization of an enum.

Cargo.toml

@@ -23,6 +23,10 @@ harness = false
 name = "ipc_shared_mem"
 harness = false
 
+[[bench]]
+name = "struct_ipc"
+harness = false
+
 [features]
 default = []
 force-inprocess = []
@@ -52,6 +56,7 @@ crossbeam-utils = "0.8"
 futures-test = "0.3"
 static_assertions = "1.1.0"
 criterion = { version = "0.5", features = ["html_reports"] }
+rand = "0.9.2"
 
 [target.'cfg(target_os = "windows")'.dependencies.windows]
 version = "0.61"

benches/ipc.rs

@@ -70,4 +70,5 @@ criterion_group!(
     transfer_receivers<8>,
     transfer_receivers<64>,
 );
+
 criterion_main!(benches);

benches/struct_ipc.rs

@@ -0,0 +1,191 @@
+use criterion::{criterion_group, criterion_main, Criterion};
+use ipc_channel::ipc;
+use rand::prelude::*;
+use serde::{Deserialize, Serialize};
+
+#[derive(Clone, Serialize, Deserialize)]
+enum TestSmall {
+    Msg0,
+    Msg1,
+    Msg2(u32, u32),
+    Msg3(u32, u32, u32),
+    Msg4(String),
+    Msg5,
+    Msg6,
+}
+
+trait NewFromRandom {
+    fn new(rng: &mut ThreadRng) -> Self;
+}
+
+impl NewFromRandom for TestSmall {
+    fn new(rng: &mut ThreadRng) -> Self {
+        match rng.random_range(0..=6) {
+            0 => Self::Msg0,
+            1 => Self::Msg1,
+            2 => Self::Msg2(23, 42),
+            3 => Self::Msg3(23, 42, 243),
+            4 => Self::Msg4(String::from("This is a test string of medium size")),
+            5 => Self::Msg5,
+            6 => Self::Msg6,
+            _ => Self::Msg6,
+        }
+    }
+}
+
+#[derive(Clone, Serialize, Deserialize)]
+enum TestMedium {
+    Msg0(u32),
+    Msg1(u32),
+    Msg2(u32),
+    Msg3(u32),
+    Msg4(u32),
+    Msg5(u32),
+    Msg6(u32),
+    Msg7(u32),
+    Msg8(u32),
+    Msg9(u32),
+    Msg10(u32),
+    Msg11(u32),
+    Msg12(u32),
+    Msg13(u32),
+    Msg14(u32),
+    Msg15(u32),
+    Msg16(u32),
+    Msg17(u32),
+    Msg18(u32),
+    Msg19(u32),
+    Msg20(u32),
+    Msg21(u32),
+    Msg22(u32),
+    Msg23(u32),
+    Msg24(u32),
+    Msg25(u32),
+    Msg26(u32),
+}
+
+impl NewFromRandom for TestMedium {
+    fn new(rng: &mut ThreadRng) -> Self {
+        match rng.random_range(0..=26) {
+            0 => Self::Msg0(42),
+            1 => Self::Msg1(42),
+            2 => Self::Msg2(42),
+            3 => Self::Msg3(42),
+            4 => Self::Msg4(42),
+            5 => Self::Msg5(42),
+            6 => Self::Msg6(42),
+            7 => Self::Msg7(42),
+            8 => Self::Msg8(42),
+            9 => Self::Msg9(42),
+            10 => Self::Msg10(42),
+            11 => Self::Msg11(42),
+            12 => Self::Msg12(42),
+            13 => Self::Msg13(42),
+            14 => Self::Msg14(42),
+            15 => Self::Msg15(42),
+            16 => Self::Msg16(42),
+            17 => Self::Msg17(42),
+            18 => Self::Msg18(42),
+            19 => Self::Msg19(42),
+            20 => Self::Msg20(42),
+            21 => Self::Msg21(42),
+            22 => Self::Msg22(42),
+            23 => Self::Msg23(42),
+            24 => Self::Msg24(42),
+            25 => Self::Msg25(42),
+            26 => Self::Msg26(42),
+            _ => Self::Msg6(42),
+        }
+    }
+}
+
+#[derive(Serialize, Deserialize)]
+enum TestFractured {
+    Msg0,
+    Msg1(Vec<usize>),
+    Msg2(
+        usize,
+        usize,
+        usize,
+        usize,
+        usize,
+        usize,
+        usize,
+        usize,
+        usize,
+        usize,
+    ),
+    Msg3(usize),
+    Msg4(usize, usize, usize),
+}
+
+impl NewFromRandom for TestFractured {
+    fn new(rng: &mut ThreadRng) -> Self {
+        match rng.random_range(0..=4) {
+            0 => Self::Msg0,
+            1 => Self::Msg1(vec![1, 2, 3]),
+            2 => Self::Msg2(1, 2, 3, 4, 5, 6, 7, 8, 9, 10),
+            3 => Self::Msg3(1),
+            4 => Self::Msg4(1, 2, 3),
+            _ => Self::Msg3(1),
+        }
+    }
+}
+
+#[derive(Serialize, Deserialize)]
+enum TestNested {
+    Msg0,
+    Msg1(TestSmall),
+    Msg2(TestMedium),
+    Msg3(TestFractured),
+    Msg4(usize),
+}
+
+impl NewFromRandom for TestNested {
+    fn new(rng: &mut ThreadRng) -> Self {
+        match rng.random_range(0..=5) {
+            0 => Self::Msg0,
+            1 => Self::Msg1(TestSmall::Msg6),
+            2 => Self::Msg2(TestMedium::Msg20(2)),
+            3 => Self::Msg3(TestFractured::Msg3(0)),
+            4 => Self::Msg4(2),
+            _ => Self::Msg3(TestFractured::Msg0),
+        }
+    }
+}
+
+fn transfer_enum<T>(criterion: &mut Criterion)
+where
+    T: NewFromRandom,
+    T: for<'de> Deserialize<'de>,
+    T: Serialize,
+{
+    criterion.bench_function("transfer_simple_struct", |bencher| {
+        let (tx, rx) = ipc::channel().unwrap();
+        let mut rng = rand::rng();
+
+        bencher.iter_batched(
+            || T::new(&mut rng),
+            |s| {
+                tx.send(s).unwrap();
+                rx.recv().unwrap();
+            },
+            criterion::BatchSize::SmallInput,
+        );
+    });
+}
+
+// TestSmall is a small enum
+// TestMedium is a medium size enum
+// TestFractured is an enum with varying sizes of inners
+// TestNested nests the enums
+
+criterion_group!(
+    benches,
+    transfer_enum<TestSmall>,
+    transfer_enum<TestMedium>,
+    transfer_enum<TestFractured>,
+    transfer_enum<TestNested>,
+);
+
+criterion_main!(benches);