Upgrade criterion to 0.5.1, reorganize benchmarks (rojo-rbx#468)

rbx_binary/Cargo.toml

@@ -26,16 +26,12 @@ profiling = "1.0.6"
 zstd = "0.13.2"
 
 [dev-dependencies]
-criterion = "0.3.5"
+criterion = "0.5.1"
 env_logger = "0.9.0"
 heck = "0.4.0"
 insta = { version = "1.14.1", features = ["yaml"] }
 serde = { version = "1.0.137", features = ["derive"] }
 
 [[bench]]
-name = "deserializer"
-harness = false
-
-[[bench]]
-name = "serializer"
+name = "suite"
 harness = false

rbx_binary/benches/suite/main.rs

@@ -0,0 +1,43 @@
+mod util;
+
+use crate::util::bench;
+use criterion::{criterion_group, criterion_main, Criterion, SamplingMode};
+
+pub fn folders_100(c: &mut Criterion) {
+    bench(
+        &mut c.benchmark_group("100 Folders"),
+        include_bytes!("../files/folders-100.rbxm"),
+    )
+}
+
+pub fn deep_folders_100(c: &mut Criterion) {
+    bench(
+        &mut c.benchmark_group("100 Deep Folders"),
+        include_bytes!("../files/deep-folders-100.rbxm"),
+    )
+}
+
+pub fn modulescripts_100_lines_100(c: &mut Criterion) {
+    bench(
+        &mut c.benchmark_group("100 100-line ModuleScripts"),
+        include_bytes!("../files/modulescripts-100-lines-100.rbxm"),
+    )
+}
+
+pub fn parts_1000(c: &mut Criterion) {
+    bench(
+        c.benchmark_group("1,000 Parts")
+            .sampling_mode(SamplingMode::Flat),
+        include_bytes!("../files/parts-1000.rbxm"),
+    )
+}
+
+criterion_group!(
+    bench_suite,
+    folders_100,
+    deep_folders_100,
+    modulescripts_100_lines_100,
+    parts_1000,
+);
+
+criterion_main!(bench_suite);

rbx_binary/benches/suite/util.rs

@@ -0,0 +1,37 @@
+use criterion::{measurement::Measurement, BatchSize, BenchmarkGroup, Throughput};
+
+pub(crate) fn bench<T: Measurement>(group: &mut BenchmarkGroup<T>, bench_file: &'static [u8]) {
+    serialize_bench(group, bench_file);
+    deserialize_bench(group, bench_file);
+}
+
+fn serialize_bench<T: Measurement>(group: &mut BenchmarkGroup<T>, buffer: &[u8]) {
+    let tree = rbx_binary::from_reader(buffer).unwrap();
+    let root_ref = tree.root_ref();
+    let mut buffer = Vec::new();
+
+    rbx_binary::to_writer(&mut buffer, &tree, &[root_ref]).unwrap();
+    let buffer_len = buffer.len();
+
+    group
+        .throughput(Throughput::Bytes(buffer_len as u64))
+        .bench_function("Serialize", |b| {
+            b.iter_batched(
+                || Vec::with_capacity(buffer_len),
+                |mut buffer: Vec<u8>| {
+                    rbx_binary::to_writer(&mut buffer, &tree, &[root_ref]).unwrap();
+                },
+                BatchSize::SmallInput,
+            )
+        });
+}
+
+fn deserialize_bench<T: Measurement>(group: &mut BenchmarkGroup<T>, buffer: &[u8]) {
+    group
+        .throughput(Throughput::Bytes(buffer.len() as u64))
+        .bench_function("Deserialize", |bencher| {
+            bencher.iter(|| {
+                rbx_binary::from_reader(buffer).unwrap();
+            });
+        });
+}