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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
commit | 698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch) | |
tree | 173a775858bd501c378080a10dca74132f05bc50 /library/core/benches/fmt.rs | |
parent | Initial commit. (diff) | |
download | rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip |
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | library/core/benches/fmt.rs | 150 |
1 files changed, 150 insertions, 0 deletions
diff --git a/library/core/benches/fmt.rs b/library/core/benches/fmt.rs new file mode 100644 index 000000000..ff726ff75 --- /dev/null +++ b/library/core/benches/fmt.rs @@ -0,0 +1,150 @@ +use std::fmt::{self, Write as FmtWrite}; +use std::io::{self, Write as IoWrite}; +use test::Bencher; + +#[bench] +fn write_vec_value(bh: &mut Bencher) { + bh.iter(|| { + let mut mem = Vec::new(); + for _ in 0..1000 { + mem.write_all("abc".as_bytes()).unwrap(); + } + }); +} + +#[bench] +fn write_vec_ref(bh: &mut Bencher) { + bh.iter(|| { + let mut mem = Vec::new(); + let wr = &mut mem as &mut dyn io::Write; + for _ in 0..1000 { + wr.write_all("abc".as_bytes()).unwrap(); + } + }); +} + +#[bench] +fn write_vec_macro1(bh: &mut Bencher) { + bh.iter(|| { + let mut mem = Vec::new(); + let wr = &mut mem as &mut dyn io::Write; + for _ in 0..1000 { + write!(wr, "abc").unwrap(); + } + }); +} + +#[bench] +fn write_vec_macro2(bh: &mut Bencher) { + bh.iter(|| { + let mut mem = Vec::new(); + let wr = &mut mem as &mut dyn io::Write; + for _ in 0..1000 { + write!(wr, "{}", "abc").unwrap(); + } + }); +} + +#[bench] +fn write_vec_macro_debug(bh: &mut Bencher) { + bh.iter(|| { + let mut mem = Vec::new(); + let wr = &mut mem as &mut dyn io::Write; + for _ in 0..1000 { + write!(wr, "{:?}", "☃").unwrap(); + } + }); +} + +#[bench] +fn write_str_value(bh: &mut Bencher) { + bh.iter(|| { + let mut mem = String::new(); + for _ in 0..1000 { + mem.write_str("abc").unwrap(); + } + }); +} + +#[bench] +fn write_str_ref(bh: &mut Bencher) { + bh.iter(|| { + let mut mem = String::new(); + let wr = &mut mem as &mut dyn fmt::Write; + for _ in 0..1000 { + wr.write_str("abc").unwrap(); + } + }); +} + +#[bench] +fn write_str_macro1(bh: &mut Bencher) { + bh.iter(|| { + let mut mem = String::new(); + for _ in 0..1000 { + write!(mem, "abc").unwrap(); + } + }); +} + +#[bench] +fn write_str_macro2(bh: &mut Bencher) { + bh.iter(|| { + let mut mem = String::new(); + let wr = &mut mem as &mut dyn fmt::Write; + for _ in 0..1000 { + write!(wr, "{}", "abc").unwrap(); + } + }); +} + +#[bench] +fn write_str_macro_debug(bh: &mut Bencher) { + bh.iter(|| { + let mut mem = String::new(); + let wr = &mut mem as &mut dyn fmt::Write; + for _ in 0..1000 { + write!(wr, "{:?}", "☃").unwrap(); + } + }); +} + +#[bench] +fn write_str_macro_debug_ascii(bh: &mut Bencher) { + bh.iter(|| { + let mut mem = String::new(); + let wr = &mut mem as &mut dyn fmt::Write; + for _ in 0..1000 { + write!(wr, "{:?}", "Hello, World!").unwrap(); + } + }); +} + +#[bench] +fn write_u128_max(bh: &mut Bencher) { + bh.iter(|| { + test::black_box(format!("{}", u128::MAX)); + }); +} + +#[bench] +fn write_u128_min(bh: &mut Bencher) { + bh.iter(|| { + let s = format!("{}", 0u128); + test::black_box(s); + }); +} + +#[bench] +fn write_u64_max(bh: &mut Bencher) { + bh.iter(|| { + test::black_box(format!("{}", u64::MAX)); + }); +} + +#[bench] +fn write_u64_min(bh: &mut Bencher) { + bh.iter(|| { + test::black_box(format!("{}", 0u64)); + }); +} |