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Fix bitv bench #16651

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Merged
merged 3 commits into from
Aug 22, 2014
Merged

Fix bitv bench #16651

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c94bf8b
bitv: make benchmarks always return a value
vks Aug 21, 2014
4d41a42
arena: fix a typo
vks Aug 21, 2014
da5e8ce
bitv: make sure benchmarks run long enough
vks Aug 21, 2014
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2 changes: 1 addition & 1 deletion src/libarena/lib.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -563,7 +563,7 @@ mod tests {

struct Noncopy {
string: String,
array: Vec<int> ,
array: Vec<int>,
}

#[test]
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43 changes: 29 additions & 14 deletions src/libcollections/bitv.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -2566,7 +2566,9 @@ mod tests {
let mut r = rng();
let mut bitv = 0 as uint;
b.iter(|| {
bitv |= 1 << ((r.next_u32() as uint) % uint::BITS);
for _ in range(0u, 100) {
bitv |= 1 << ((r.next_u32() as uint) % uint::BITS);
}
&bitv
})
}
Expand All @@ -2576,7 +2578,9 @@ mod tests {
let mut r = rng();
let mut bitv = Bitv::with_capacity(BENCH_BITS, false);
b.iter(|| {
bitv.set((r.next_u32() as uint) % BENCH_BITS, true);
for _ in range(0u, 100) {
bitv.set((r.next_u32() as uint) % BENCH_BITS, true);
}
&bitv
})
}
Expand All @@ -2586,7 +2590,9 @@ mod tests {
let mut r = rng();
let mut bitv = Bitv::with_capacity(uint::BITS, false);
b.iter(|| {
bitv.set((r.next_u32() as uint) % uint::BITS, true);
for _ in range(0u, 100) {
bitv.set((r.next_u32() as uint) % uint::BITS, true);
}
&bitv
})
}
Expand All @@ -2596,7 +2602,9 @@ mod tests {
let mut r = rng();
let mut bitv = BitvSet::new();
b.iter(|| {
bitv.insert((r.next_u32() as uint) % uint::BITS);
for _ in range(0u, 100) {
bitv.insert((r.next_u32() as uint) % uint::BITS);
}
&bitv
})
}
Expand All @@ -2606,7 +2614,9 @@ mod tests {
let mut r = rng();
let mut bitv = BitvSet::new();
b.iter(|| {
bitv.insert((r.next_u32() as uint) % BENCH_BITS);
for _ in range(0u, 100) {
bitv.insert((r.next_u32() as uint) % BENCH_BITS);
}
&bitv
})
}
Expand All @@ -2616,29 +2626,33 @@ mod tests {
let mut b1 = Bitv::with_capacity(BENCH_BITS, false);
let b2 = Bitv::with_capacity(BENCH_BITS, false);
b.iter(|| {
b1.union(&b2);
b1.union(&b2)
})
}

#[bench]
fn bench_btv_small_iter(b: &mut Bencher) {
fn bench_bitv_small_iter(b: &mut Bencher) {
let bitv = Bitv::with_capacity(uint::BITS, false);
b.iter(|| {
let mut _sum = 0;
for pres in bitv.iter() {
_sum += pres as uint;
let mut sum = 0;
for _ in range(0u, 10) {
for pres in bitv.iter() {
sum += pres as uint;
}
}
sum
})
}

#[bench]
fn bench_bitv_big_iter(b: &mut Bencher) {
let bitv = Bitv::with_capacity(BENCH_BITS, false);
b.iter(|| {
let mut _sum = 0;
let mut sum = 0;
for pres in bitv.iter() {
_sum += pres as uint;
sum += pres as uint;
}
sum
})
}

Expand All @@ -2647,10 +2661,11 @@ mod tests {
let bitv = BitvSet::from_bitv(from_fn(BENCH_BITS,
|idx| {idx % 3 == 0}));
b.iter(|| {
let mut _sum = 0;
let mut sum = 0;
for idx in bitv.iter() {
_sum += idx;
sum += idx;
}
sum
})
}
}