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Hash strings 8 bytes at a time

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This commit is contained in:
Robert O'Callahan 2025-08-29 04:13:23 +00:00
parent c2ad2a407a
commit 652190bd50
1 changed files with 11 additions and 2 deletions
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13
kernel/hashlib.h
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@ -168,8 +168,17 @@ struct hash_ops {
} else if constexpr (std::is_pointer_v<T>) { } else if constexpr (std::is_pointer_v<T>) {
return hash_ops<uintptr_t>::hash_into((uintptr_t) a, h); return hash_ops<uintptr_t>::hash_into((uintptr_t) a, h);
} else if constexpr (std::is_same_v<T, std::string>) { } else if constexpr (std::is_same_v<T, std::string>) {
for (auto c : a) int size = a.size();
h.hash32(c); int i = 0;
while (i + 8 < size) {
uint64_t v;
memcpy(&v, a.data() + i, 8);
h.hash64(v);
i += 8;
}
uint64_t v = 0;
memcpy(&v, a.data() + i, size - i);
h.hash64(v);
return h; return h;
} else { } else {
return a.hash_into(h); return a.hash_into(h);