v/cmd/tools/bench/wyhash.v

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module main
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import hash.fnv1a
import hash.wyhash
import rand
import time
fn main() {
sample_size := 10000000
min_str_len := 20
max_str_len := 40
println('Generating $sample_size strings between $min_str_len - $max_str_len chars long...')
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mut bytepile := []byte{}
for _ in 0 .. sample_size * max_str_len {
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bytepile << byte(rand.int_in_range(40, 125))
}
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mut str_lens := []int{}
for _ in 0 .. sample_size {
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str_lens << rand.int_in_range(min_str_len, max_str_len)
}
println('Hashing each of the generated strings...')
t0 := time.ticks()
mut start_pos := 0
for len in str_lens {
end_pos := start_pos + len
str := string(bytepile[start_pos..end_pos],len)
wyhash.wyhash_c(&str.str, u64(str.len), 1)
start_pos = end_pos
}
t1 := time.ticks()
d1 := t1 - t0
println(' * wyhash4 C: ${d1}ms')
start_pos = 0
for len in str_lens {
end_pos := start_pos + len
str := string(bytepile[start_pos..end_pos],len)
wyhash.sum64_string(str, 1)
start_pos = end_pos
}
t2 := time.ticks()
d2 := t2 - t1
println(' * wyhash4: ${d2}ms')
start_pos = 0
for len in str_lens {
end_pos := start_pos + len
str := string(bytepile[start_pos..end_pos],len)
fnv1a.sum64_string(str)
start_pos = end_pos
}
t3 := time.ticks()
d3 := t3 - t2
println(' * fnv1a64: ${d3}ms')
}