check in a benchmark

arrow-array/Cargo.toml

@@ -62,3 +62,7 @@ criterion = { version = "0.5", default-features = false }
 [[bench]]
 name = "occupancy"
 harness = false
+
+[[bench]]
+name = "gc_view_types"
+harness = false

arrow-array/benches/gc_view_types.rs

@@ -0,0 +1,48 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+use arrow_array::StringViewArray;
+use criterion::*;
+
+fn gen_view_array(size: usize) -> StringViewArray {
+    StringViewArray::from_iter((0..size).map(|v| match v % 3 {
+        0 => Some("small"),
+        1 => Some("larger than 12 bytes array"),
+        2 => None,
+        _ => unreachable!("unreachable"),
+    }))
+}
+
+fn criterion_benchmark(c: &mut Criterion) {
+    let array = gen_view_array(100_000);
+
+    c.bench_function("gc view types all", |b| {
+        b.iter(|| {
+            black_box(array.gc());
+        });
+    });
+
+    let sliced = array.slice(0, 100_000 / 2);
+    c.bench_function("gc view types slice half", |b| {
+        b.iter(|| {
+            black_box(sliced.gc());
+        });
+    });
+}
+
+criterion_group!(benches, criterion_benchmark);
+criterion_main!(benches);