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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /third_party/rust/arrayvec/benches | |
parent | Initial commit. (diff) | |
download | firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip |
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'third_party/rust/arrayvec/benches')
-rw-r--r-- | third_party/rust/arrayvec/benches/arraystring.rs | 90 | ||||
-rw-r--r-- | third_party/rust/arrayvec/benches/extend.rs | 78 |
2 files changed, 168 insertions, 0 deletions
diff --git a/third_party/rust/arrayvec/benches/arraystring.rs b/third_party/rust/arrayvec/benches/arraystring.rs new file mode 100644 index 0000000000..5b986fa2ab --- /dev/null +++ b/third_party/rust/arrayvec/benches/arraystring.rs @@ -0,0 +1,90 @@ + +extern crate arrayvec; +#[macro_use] extern crate bencher; + +use arrayvec::ArrayString; + +use bencher::Bencher; + +fn try_push_c(b: &mut Bencher) { + let mut v = ArrayString::<512>::new(); + b.iter(|| { + v.clear(); + while v.try_push('c').is_ok() { + } + v.len() + }); + b.bytes = v.capacity() as u64; +} + +fn try_push_alpha(b: &mut Bencher) { + let mut v = ArrayString::<512>::new(); + b.iter(|| { + v.clear(); + while v.try_push('α').is_ok() { + } + v.len() + }); + b.bytes = v.capacity() as u64; +} + +// Yes, pushing a string char-by-char is slow. Use .push_str. +fn try_push_string(b: &mut Bencher) { + let mut v = ArrayString::<512>::new(); + let input = "abcαβγ“”"; + b.iter(|| { + v.clear(); + for ch in input.chars().cycle() { + if !v.try_push(ch).is_ok() { + break; + } + } + v.len() + }); + b.bytes = v.capacity() as u64; +} + +fn push_c(b: &mut Bencher) { + let mut v = ArrayString::<512>::new(); + b.iter(|| { + v.clear(); + while !v.is_full() { + v.push('c'); + } + v.len() + }); + b.bytes = v.capacity() as u64; +} + +fn push_alpha(b: &mut Bencher) { + let mut v = ArrayString::<512>::new(); + b.iter(|| { + v.clear(); + while !v.is_full() { + v.push('α'); + } + v.len() + }); + b.bytes = v.capacity() as u64; +} + +fn push_string(b: &mut Bencher) { + let mut v = ArrayString::<512>::new(); + let input = "abcαβγ“”"; + b.iter(|| { + v.clear(); + for ch in input.chars().cycle() { + if !v.is_full() { + v.push(ch); + } else { + break; + } + } + v.len() + }); + b.bytes = v.capacity() as u64; +} + +benchmark_group!(benches, try_push_c, try_push_alpha, try_push_string, push_c, + push_alpha, push_string); +benchmark_main!(benches); diff --git a/third_party/rust/arrayvec/benches/extend.rs b/third_party/rust/arrayvec/benches/extend.rs new file mode 100644 index 0000000000..ba33a93257 --- /dev/null +++ b/third_party/rust/arrayvec/benches/extend.rs @@ -0,0 +1,78 @@ + +extern crate arrayvec; +#[macro_use] extern crate bencher; + +use std::io::Write; + +use arrayvec::ArrayVec; + +use bencher::Bencher; +use bencher::black_box; + +fn extend_with_constant(b: &mut Bencher) { + let mut v = ArrayVec::<u8, 512>::new(); + let cap = v.capacity(); + b.iter(|| { + v.clear(); + let constant = black_box(1); + v.extend((0..cap).map(move |_| constant)); + v[511] + }); + b.bytes = v.capacity() as u64; +} + +fn extend_with_range(b: &mut Bencher) { + let mut v = ArrayVec::<u8, 512>::new(); + let cap = v.capacity(); + b.iter(|| { + v.clear(); + let range = 0..cap; + v.extend(range.map(|x| black_box(x as _))); + v[511] + }); + b.bytes = v.capacity() as u64; +} + +fn extend_with_slice(b: &mut Bencher) { + let mut v = ArrayVec::<u8, 512>::new(); + let data = [1; 512]; + b.iter(|| { + v.clear(); + let iter = data.iter().map(|&x| x); + v.extend(iter); + v[511] + }); + b.bytes = v.capacity() as u64; +} + +fn extend_with_write(b: &mut Bencher) { + let mut v = ArrayVec::<u8, 512>::new(); + let data = [1; 512]; + b.iter(|| { + v.clear(); + v.write(&data[..]).ok(); + v[511] + }); + b.bytes = v.capacity() as u64; +} + +fn extend_from_slice(b: &mut Bencher) { + let mut v = ArrayVec::<u8, 512>::new(); + let data = [1; 512]; + b.iter(|| { + v.clear(); + v.try_extend_from_slice(&data).ok(); + v[511] + }); + b.bytes = v.capacity() as u64; +} + +benchmark_group!(benches, + extend_with_constant, + extend_with_range, + extend_with_slice, + extend_with_write, + extend_from_slice +); + +benchmark_main!(benches); |