| use std::fmt::{self, Write as FmtWrite}; |
| use std::io::{self, Write as IoWrite}; |
| |
| use test::{Bencher, black_box}; |
| |
| #[bench] |
| fn write_vec_value(bh: &mut Bencher) { |
| bh.iter(|| { |
| let mut mem = Vec::new(); |
| for _ in 0..1000 { |
| mem.write_all(black_box("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(black_box("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, "{}", black_box("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, "{}", black_box("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, "{:?}", black_box("☃")).unwrap(); |
| } |
| }); |
| } |
| |
| #[bench] |
| fn write_str_value(bh: &mut Bencher) { |
| bh.iter(|| { |
| let mut mem = String::new(); |
| for _ in 0..1000 { |
| mem.write_str(black_box("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(black_box("abc")).unwrap(); |
| } |
| }); |
| } |
| |
| #[bench] |
| fn write_str_macro1(bh: &mut Bencher) { |
| bh.iter(|| { |
| let mut mem = String::new(); |
| for _ in 0..1000 { |
| write!(mem, "{}", black_box("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, "{}", black_box("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, "{:?}", black_box("☃")).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, "{:?}", black_box("Hello, World!")).unwrap(); |
| } |
| }); |
| } |
| |
| #[bench] |
| fn write_u128_max(bh: &mut Bencher) { |
| bh.iter(|| { |
| black_box(format!("{}", black_box(u128::MAX))); |
| }); |
| } |
| |
| #[bench] |
| fn write_u128_min(bh: &mut Bencher) { |
| bh.iter(|| { |
| black_box(format!("{}", black_box(u128::MIN))); |
| }); |
| } |
| |
| #[bench] |
| fn write_u64_max(bh: &mut Bencher) { |
| bh.iter(|| { |
| black_box(format!("{}", black_box(u64::MAX))); |
| }); |
| } |
| |
| #[bench] |
| fn write_u64_min(bh: &mut Bencher) { |
| bh.iter(|| { |
| black_box(format!("{}", black_box(u64::MIN))); |
| }); |
| } |
| |
| #[bench] |
| fn write_u8_max(bh: &mut Bencher) { |
| bh.iter(|| { |
| black_box(format!("{}", black_box(u8::MAX))); |
| }); |
| } |
| |
| #[bench] |
| fn write_u8_min(bh: &mut Bencher) { |
| bh.iter(|| { |
| black_box(format!("{}", black_box(u8::MIN))); |
| }); |
| } |
| |
| #[bench] |
| fn write_i8_bin(bh: &mut Bencher) { |
| let mut buf = String::with_capacity(256); |
| bh.iter(|| { |
| write!(black_box(&mut buf), "{:b}", black_box(0_i8)).unwrap(); |
| write!(black_box(&mut buf), "{:b}", black_box(100_i8)).unwrap(); |
| write!(black_box(&mut buf), "{:b}", black_box(-100_i8)).unwrap(); |
| write!(black_box(&mut buf), "{:b}", black_box(1_i8 << 4)).unwrap(); |
| black_box(&mut buf).clear(); |
| }); |
| } |
| |
| #[bench] |
| fn write_i16_bin(bh: &mut Bencher) { |
| let mut buf = String::with_capacity(256); |
| bh.iter(|| { |
| write!(black_box(&mut buf), "{:b}", black_box(0_i16)).unwrap(); |
| write!(black_box(&mut buf), "{:b}", black_box(100_i16)).unwrap(); |
| write!(black_box(&mut buf), "{:b}", black_box(-100_i16)).unwrap(); |
| write!(black_box(&mut buf), "{:b}", black_box(1_i16 << 8)).unwrap(); |
| black_box(&mut buf).clear(); |
| }); |
| } |
| |
| #[bench] |
| fn write_i32_bin(bh: &mut Bencher) { |
| let mut buf = String::with_capacity(256); |
| bh.iter(|| { |
| write!(black_box(&mut buf), "{:b}", black_box(0_i32)).unwrap(); |
| write!(black_box(&mut buf), "{:b}", black_box(100_i32)).unwrap(); |
| write!(black_box(&mut buf), "{:b}", black_box(-100_i32)).unwrap(); |
| write!(black_box(&mut buf), "{:b}", black_box(1_i32 << 16)).unwrap(); |
| black_box(&mut buf).clear(); |
| }); |
| } |
| |
| #[bench] |
| fn write_i64_bin(bh: &mut Bencher) { |
| let mut buf = String::with_capacity(256); |
| bh.iter(|| { |
| write!(black_box(&mut buf), "{:b}", black_box(0_i64)).unwrap(); |
| write!(black_box(&mut buf), "{:b}", black_box(100_i64)).unwrap(); |
| write!(black_box(&mut buf), "{:b}", black_box(-100_i64)).unwrap(); |
| write!(black_box(&mut buf), "{:b}", black_box(1_i64 << 32)).unwrap(); |
| black_box(&mut buf).clear(); |
| }); |
| } |
| |
| #[bench] |
| fn write_i128_bin(bh: &mut Bencher) { |
| let mut buf = String::with_capacity(256); |
| bh.iter(|| { |
| write!(black_box(&mut buf), "{:b}", black_box(0_i128)).unwrap(); |
| write!(black_box(&mut buf), "{:b}", black_box(100_i128)).unwrap(); |
| write!(black_box(&mut buf), "{:b}", black_box(-100_i128)).unwrap(); |
| write!(black_box(&mut buf), "{:b}", black_box(1_i128 << 64)).unwrap(); |
| black_box(&mut buf).clear(); |
| }); |
| } |
| |
| #[bench] |
| fn write_i8_oct(bh: &mut Bencher) { |
| let mut buf = String::with_capacity(256); |
| bh.iter(|| { |
| write!(black_box(&mut buf), "{:o}", black_box(0_i8)).unwrap(); |
| write!(black_box(&mut buf), "{:o}", black_box(100_i8)).unwrap(); |
| write!(black_box(&mut buf), "{:o}", black_box(-100_i8)).unwrap(); |
| write!(black_box(&mut buf), "{:o}", black_box(1_i8 << 4)).unwrap(); |
| black_box(&mut buf).clear(); |
| }); |
| } |
| |
| #[bench] |
| fn write_i16_oct(bh: &mut Bencher) { |
| let mut buf = String::with_capacity(256); |
| bh.iter(|| { |
| write!(black_box(&mut buf), "{:o}", black_box(0_i16)).unwrap(); |
| write!(black_box(&mut buf), "{:o}", black_box(100_i16)).unwrap(); |
| write!(black_box(&mut buf), "{:o}", black_box(-100_i16)).unwrap(); |
| write!(black_box(&mut buf), "{:o}", black_box(1_i16 << 8)).unwrap(); |
| black_box(&mut buf).clear(); |
| }); |
| } |
| |
| #[bench] |
| fn write_i32_oct(bh: &mut Bencher) { |
| let mut buf = String::with_capacity(256); |
| bh.iter(|| { |
| write!(black_box(&mut buf), "{:o}", black_box(0_i32)).unwrap(); |
| write!(black_box(&mut buf), "{:o}", black_box(100_i32)).unwrap(); |
| write!(black_box(&mut buf), "{:o}", black_box(-100_i32)).unwrap(); |
| write!(black_box(&mut buf), "{:o}", black_box(1_i32 << 16)).unwrap(); |
| black_box(&mut buf).clear(); |
| }); |
| } |
| |
| #[bench] |
| fn write_i64_oct(bh: &mut Bencher) { |
| let mut buf = String::with_capacity(256); |
| bh.iter(|| { |
| write!(black_box(&mut buf), "{:o}", black_box(0_i64)).unwrap(); |
| write!(black_box(&mut buf), "{:o}", black_box(100_i64)).unwrap(); |
| write!(black_box(&mut buf), "{:o}", black_box(-100_i64)).unwrap(); |
| write!(black_box(&mut buf), "{:o}", black_box(1_i64 << 32)).unwrap(); |
| black_box(&mut buf).clear(); |
| }); |
| } |
| |
| #[bench] |
| fn write_i128_oct(bh: &mut Bencher) { |
| let mut buf = String::with_capacity(256); |
| bh.iter(|| { |
| write!(black_box(&mut buf), "{:o}", black_box(0_i128)).unwrap(); |
| write!(black_box(&mut buf), "{:o}", black_box(100_i128)).unwrap(); |
| write!(black_box(&mut buf), "{:o}", black_box(-100_i128)).unwrap(); |
| write!(black_box(&mut buf), "{:o}", black_box(1_i128 << 64)).unwrap(); |
| black_box(&mut buf).clear(); |
| }); |
| } |
| |
| #[bench] |
| fn write_i8_hex(bh: &mut Bencher) { |
| let mut buf = String::with_capacity(256); |
| bh.iter(|| { |
| write!(black_box(&mut buf), "{:x}", black_box(0_i8)).unwrap(); |
| write!(black_box(&mut buf), "{:x}", black_box(100_i8)).unwrap(); |
| write!(black_box(&mut buf), "{:x}", black_box(-100_i8)).unwrap(); |
| write!(black_box(&mut buf), "{:x}", black_box(1_i8 << 4)).unwrap(); |
| black_box(&mut buf).clear(); |
| }); |
| } |
| |
| #[bench] |
| fn write_i16_hex(bh: &mut Bencher) { |
| let mut buf = String::with_capacity(256); |
| bh.iter(|| { |
| write!(black_box(&mut buf), "{:x}", black_box(0_i16)).unwrap(); |
| write!(black_box(&mut buf), "{:x}", black_box(100_i16)).unwrap(); |
| write!(black_box(&mut buf), "{:x}", black_box(-100_i16)).unwrap(); |
| write!(black_box(&mut buf), "{:x}", black_box(1_i16 << 8)).unwrap(); |
| black_box(&mut buf).clear(); |
| }); |
| } |
| |
| #[bench] |
| fn write_i32_hex(bh: &mut Bencher) { |
| let mut buf = String::with_capacity(256); |
| bh.iter(|| { |
| write!(black_box(&mut buf), "{:x}", black_box(0_i32)).unwrap(); |
| write!(black_box(&mut buf), "{:x}", black_box(100_i32)).unwrap(); |
| write!(black_box(&mut buf), "{:x}", black_box(-100_i32)).unwrap(); |
| write!(black_box(&mut buf), "{:x}", black_box(1_i32 << 16)).unwrap(); |
| black_box(&mut buf).clear(); |
| }); |
| } |
| |
| #[bench] |
| fn write_i64_hex(bh: &mut Bencher) { |
| let mut buf = String::with_capacity(256); |
| bh.iter(|| { |
| write!(black_box(&mut buf), "{:x}", black_box(0_i64)).unwrap(); |
| write!(black_box(&mut buf), "{:x}", black_box(100_i64)).unwrap(); |
| write!(black_box(&mut buf), "{:x}", black_box(-100_i64)).unwrap(); |
| write!(black_box(&mut buf), "{:x}", black_box(1_i64 << 32)).unwrap(); |
| black_box(&mut buf).clear(); |
| }); |
| } |
| |
| #[bench] |
| fn write_i128_hex(bh: &mut Bencher) { |
| let mut buf = String::with_capacity(256); |
| bh.iter(|| { |
| write!(black_box(&mut buf), "{:x}", black_box(0_i128)).unwrap(); |
| write!(black_box(&mut buf), "{:x}", black_box(100_i128)).unwrap(); |
| write!(black_box(&mut buf), "{:x}", black_box(-100_i128)).unwrap(); |
| write!(black_box(&mut buf), "{:x}", black_box(1_i128 << 64)).unwrap(); |
| black_box(&mut buf).clear(); |
| }); |
| } |
| |
| #[bench] |
| fn write_i64_exp(bh: &mut Bencher) { |
| let mut buf = String::with_capacity(1024); |
| bh.iter(|| { |
| write!(black_box(&mut buf), "{:e}", black_box(0_i64)).unwrap(); |
| write!(black_box(&mut buf), "{:e}", black_box(100_i64)).unwrap(); |
| write!(black_box(&mut buf), "{:e}", black_box(-100_i64)).unwrap(); |
| write!(black_box(&mut buf), "{:e}", black_box(1_i64 << 32)).unwrap(); |
| black_box(&mut buf).clear(); |
| }); |
| } |
| |
| #[bench] |
| fn write_i128_exp(bh: &mut Bencher) { |
| let mut buf = String::with_capacity(1024); |
| bh.iter(|| { |
| write!(black_box(&mut buf), "{:e}", black_box(0_i128)).unwrap(); |
| write!(black_box(&mut buf), "{:e}", black_box(100_i128)).unwrap(); |
| write!(black_box(&mut buf), "{:e}", black_box(-100_i128)).unwrap(); |
| write!(black_box(&mut buf), "{:e}", black_box(1_i128 << 64)).unwrap(); |
| black_box(&mut buf).clear(); |
| }); |
| } |