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Diffstat (limited to 'vendor/itertools/benches/tuples.rs')
| -rw-r--r-- | vendor/itertools/benches/tuples.rs | 213 |
1 files changed, 213 insertions, 0 deletions
diff --git a/vendor/itertools/benches/tuples.rs b/vendor/itertools/benches/tuples.rs new file mode 100644 index 000000000..ea50aaaee --- /dev/null +++ b/vendor/itertools/benches/tuples.rs @@ -0,0 +1,213 @@ +use criterion::{criterion_group, criterion_main, Criterion}; +use itertools::Itertools; + +fn s1(a: u32) -> u32 { + a +} + +fn s2(a: u32, b: u32) -> u32 { + a + b +} + +fn s3(a: u32, b: u32, c: u32) -> u32 { + a + b + c +} + +fn s4(a: u32, b: u32, c: u32, d: u32) -> u32 { + a + b + c + d +} + +fn sum_s1(s: &[u32]) -> u32 { + s1(s[0]) +} + +fn sum_s2(s: &[u32]) -> u32 { + s2(s[0], s[1]) +} + +fn sum_s3(s: &[u32]) -> u32 { + s3(s[0], s[1], s[2]) +} + +fn sum_s4(s: &[u32]) -> u32 { + s4(s[0], s[1], s[2], s[3]) +} + +fn sum_t1(s: &(&u32, )) -> u32 { + s1(*s.0) +} + +fn sum_t2(s: &(&u32, &u32)) -> u32 { + s2(*s.0, *s.1) +} + +fn sum_t3(s: &(&u32, &u32, &u32)) -> u32 { + s3(*s.0, *s.1, *s.2) +} + +fn sum_t4(s: &(&u32, &u32, &u32, &u32)) -> u32 { + s4(*s.0, *s.1, *s.2, *s.3) +} + +macro_rules! def_benchs { + ($N:expr; + $BENCH_GROUP:ident, + $TUPLE_FUN:ident, + $TUPLES:ident, + $TUPLE_WINDOWS:ident; + $SLICE_FUN:ident, + $CHUNKS:ident, + $WINDOWS:ident; + $FOR_CHUNKS:ident, + $FOR_WINDOWS:ident + ) => ( + fn $FOR_CHUNKS(c: &mut Criterion) { + let v: Vec<u32> = (0.. $N * 1_000).collect(); + let mut s = 0; + c.bench_function(&stringify!($FOR_CHUNKS).replace('_', " "), move |b| { + b.iter(|| { + let mut j = 0; + for _ in 0..1_000 { + s += $SLICE_FUN(&v[j..(j + $N)]); + j += $N; + } + s + }) + }); + } + + fn $FOR_WINDOWS(c: &mut Criterion) { + let v: Vec<u32> = (0..1_000).collect(); + let mut s = 0; + c.bench_function(&stringify!($FOR_WINDOWS).replace('_', " "), move |b| { + b.iter(|| { + for i in 0..(1_000 - $N) { + s += $SLICE_FUN(&v[i..(i + $N)]); + } + s + }) + }); + } + + fn $TUPLES(c: &mut Criterion) { + let v: Vec<u32> = (0.. $N * 1_000).collect(); + let mut s = 0; + c.bench_function(&stringify!($TUPLES).replace('_', " "), move |b| { + b.iter(|| { + for x in v.iter().tuples() { + s += $TUPLE_FUN(&x); + } + s + }) + }); + } + + fn $CHUNKS(c: &mut Criterion) { + let v: Vec<u32> = (0.. $N * 1_000).collect(); + let mut s = 0; + c.bench_function(&stringify!($CHUNKS).replace('_', " "), move |b| { + b.iter(|| { + for x in v.chunks($N) { + s += $SLICE_FUN(x); + } + s + }) + }); + } + + fn $TUPLE_WINDOWS(c: &mut Criterion) { + let v: Vec<u32> = (0..1_000).collect(); + let mut s = 0; + c.bench_function(&stringify!($TUPLE_WINDOWS).replace('_', " "), move |b| { + b.iter(|| { + for x in v.iter().tuple_windows() { + s += $TUPLE_FUN(&x); + } + s + }) + }); + } + + fn $WINDOWS(c: &mut Criterion) { + let v: Vec<u32> = (0..1_000).collect(); + let mut s = 0; + c.bench_function(&stringify!($WINDOWS).replace('_', " "), move |b| { + b.iter(|| { + for x in v.windows($N) { + s += $SLICE_FUN(x); + } + s + }) + }); + } + + criterion_group!( + $BENCH_GROUP, + $FOR_CHUNKS, + $FOR_WINDOWS, + $TUPLES, + $CHUNKS, + $TUPLE_WINDOWS, + $WINDOWS, + ); + ) +} + +def_benchs!{ + 1; + benches_1, + sum_t1, + tuple_chunks_1, + tuple_windows_1; + sum_s1, + slice_chunks_1, + slice_windows_1; + for_chunks_1, + for_windows_1 +} + +def_benchs!{ + 2; + benches_2, + sum_t2, + tuple_chunks_2, + tuple_windows_2; + sum_s2, + slice_chunks_2, + slice_windows_2; + for_chunks_2, + for_windows_2 +} + +def_benchs!{ + 3; + benches_3, + sum_t3, + tuple_chunks_3, + tuple_windows_3; + sum_s3, + slice_chunks_3, + slice_windows_3; + for_chunks_3, + for_windows_3 +} + +def_benchs!{ + 4; + benches_4, + sum_t4, + tuple_chunks_4, + tuple_windows_4; + sum_s4, + slice_chunks_4, + slice_windows_4; + for_chunks_4, + for_windows_4 +} + +criterion_main!( + benches_1, + benches_2, + benches_3, + benches_4, +); |