57 lines
1.5 KiB
V
57 lines
1.5 KiB
V
module main
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import hash.fnv1a
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import hash as wyhash
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import rand
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import benchmark
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fn main() {
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rand.seed([u32(42), 0])
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sample_size := 10000000
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min_str_len := 20
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max_str_len := 40
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println('Generating $sample_size strings between $min_str_len - $max_str_len chars long...')
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mut checksum := u64(0)
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mut start_pos := 0
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mut bgenerating := benchmark.start()
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mut bytepile := []byte{}
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for _ in 0 .. sample_size * max_str_len {
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bytepile << byte(rand.int_in_range(40, 125) or { 40 })
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}
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mut str_lens := []int{}
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for _ in 0 .. sample_size {
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str_lens << rand.int_in_range(min_str_len, max_str_len) or { min_str_len }
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}
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bgenerating.measure('generating strings')
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println('Hashing each of the generated strings...')
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//
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mut bhashing_1 := benchmark.start()
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start_pos = 0
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checksum = 0
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for len in str_lens {
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end_pos := start_pos + len
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checksum ^= wyhash.wyhash_c(unsafe { &byte(bytepile.data) + start_pos }, u64(len),
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1)
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start_pos = end_pos
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}
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bhashing_1.measure('wyhash.wyhash_c | checksum: ${checksum:22}')
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mut bhashing_2 := benchmark.start()
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start_pos = 0
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checksum = 0
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for len in str_lens {
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end_pos := start_pos + len
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checksum ^= wyhash.sum64(bytepile[start_pos..end_pos], 1)
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start_pos = end_pos
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}
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bhashing_2.measure('wyhash.sum64 | checksum: ${checksum:22}')
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mut bhashing_3 := benchmark.start()
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start_pos = 0
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checksum = 0
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for len in str_lens {
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end_pos := start_pos + len
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checksum ^= fnv1a.sum64(bytepile[start_pos..end_pos])
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start_pos = end_pos
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}
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bhashing_3.measure('fnv1a.sum64 | checksum: ${checksum:22}')
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}
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