51 lines
1.8 KiB
Rust
51 lines
1.8 KiB
Rust
// Licensed to the Apache Software Foundation (ASF) under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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use arrow_buffer::{OffsetBuffer, OffsetBufferBuilder};
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use criterion::*;
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use rand::rngs::StdRng;
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use rand::{Rng, SeedableRng};
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use std::hint;
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const SIZE: usize = 1024;
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fn criterion_benchmark(c: &mut Criterion) {
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let mut rng = StdRng::seed_from_u64(42);
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let lengths: Vec<usize> = hint::black_box((0..SIZE).map(|_| rng.random_range(0..40)).collect());
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c.bench_function("OffsetBuffer::from_lengths", |b| {
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b.iter(|| OffsetBuffer::<i32>::from_lengths(lengths.iter().copied()));
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});
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c.bench_function("OffsetBufferBuilder::push_length", |b| {
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b.iter(|| {
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let mut builder = OffsetBufferBuilder::<i32>::new(lengths.len());
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lengths.iter().for_each(|x| builder.push_length(*x));
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builder.finish()
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});
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});
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let offsets = OffsetBuffer::<i32>::from_lengths(lengths.iter().copied()).into_inner();
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c.bench_function("OffsetBuffer::new", |b| {
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b.iter(|| OffsetBuffer::new(hint::black_box(offsets.clone())));
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});
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}
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criterion_group!(benches, criterion_benchmark);
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criterion_main!(benches);
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