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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
commit36d22d82aa202bb199967e9512281e9a53db42c9 (patch)
tree105e8c98ddea1c1e4784a60a5a6410fa416be2de /third_party/rust/arrayvec/benches
parentInitial commit. (diff)
downloadfirefox-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.rs90
-rw-r--r--third_party/rust/arrayvec/benches/extend.rs78
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);