1 files changed, 56 insertions, 0 deletions
diff --git a/v_windows/v/cmd/tools/bench/wyhash.v b/v_windows/v/cmd/tools/bench/wyhash.v
new file mode 100644
index 0000000..b760ad6
--- /dev/null
+++ b/v_windows/v/cmd/tools/bench/wyhash.v
@@ -0,0 +1,56 @@
+module main
+
+import hash.fnv1a
+import hash as wyhash
+import rand
+import benchmark
+
+fn main() {
+	rand.seed([u32(42), 0])
+	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...')
+	mut checksum := u64(0)
+	mut start_pos := 0
+	mut bgenerating := benchmark.start()
+	mut bytepile := []byte{}
+	for _ in 0 .. sample_size * max_str_len {
+		bytepile << byte(rand.int_in_range(40, 125))
+	}
+	mut str_lens := []int{}
+	for _ in 0 .. sample_size {
+		str_lens << rand.int_in_range(min_str_len, max_str_len)
+	}
+	bgenerating.measure('generating strings')
+	println('Hashing each of the generated strings...')
+	//
+	mut bhashing_1 := benchmark.start()
+	start_pos = 0
+	checksum = 0
+	for len in str_lens {
+		end_pos := start_pos + len
+		checksum ^= wyhash.wyhash_c(unsafe { &byte(bytepile.data) + start_pos }, u64(len),
+			1)
+		start_pos = end_pos
+	}
+	bhashing_1.measure('wyhash.wyhash_c  | checksum: ${checksum:22}')
+	mut bhashing_2 := benchmark.start()
+	start_pos = 0
+	checksum = 0
+	for len in str_lens {
+		end_pos := start_pos + len
+		checksum ^= wyhash.sum64(bytepile[start_pos..end_pos], 1)
+		start_pos = end_pos
+	}
+	bhashing_2.measure('wyhash.sum64     | checksum: ${checksum:22}')
+	mut bhashing_3 := benchmark.start()
+	start_pos = 0
+	checksum = 0
+	for len in str_lens {
+		end_pos := start_pos + len
+		checksum ^= fnv1a.sum64(bytepile[start_pos..end_pos])
+		start_pos = end_pos
+	}
+	bhashing_3.measure('fnv1a.sum64      | checksum: ${checksum:22}')
+}