81 lines
2.1 KiB
Rust
81 lines
2.1 KiB
Rust
use ahash::{AHasher, RandomState};
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use std::hash::{BuildHasher, Hash, Hasher};
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#[macro_use]
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extern crate no_panic;
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#[inline(never)]
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#[no_panic]
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fn hash_test_final(num: i32, string: &str) -> (u64, u64) {
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use core::hash::Hasher;
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let mut hasher1 = RandomState::with_seeds(1, 2, 3, 4).build_hasher();
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let mut hasher2 = RandomState::with_seeds(3, 4, 5, 6).build_hasher();
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hasher1.write_i32(num);
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hasher2.write(string.as_bytes());
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(hasher1.finish(), hasher2.finish())
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}
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#[inline(never)]
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fn hash_test_final_wrapper(num: i32, string: &str) {
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hash_test_final(num, string);
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}
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struct SimpleBuildHasher {
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hasher: AHasher,
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}
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impl SimpleBuildHasher {
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fn hash_one<T: Hash>(&self, x: T) -> u64
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where
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Self: Sized,
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{
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let mut hasher = self.build_hasher();
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x.hash(&mut hasher);
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hasher.finish()
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}
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}
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impl BuildHasher for SimpleBuildHasher {
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type Hasher = AHasher;
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fn build_hasher(&self) -> Self::Hasher {
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self.hasher.clone()
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}
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}
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#[inline(never)]
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#[no_panic]
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fn hash_test_specialize(num: i32, string: &str) -> (u64, u64) {
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let hasher1 = RandomState::with_seeds(1, 2, 3, 4).build_hasher();
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let hasher2 = RandomState::with_seeds(1, 2, 3, 4).build_hasher();
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(
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SimpleBuildHasher { hasher: hasher1 }.hash_one(num),
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SimpleBuildHasher { hasher: hasher2 }.hash_one(string.as_bytes()),
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)
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}
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#[inline(never)]
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fn hash_test_random_wrapper(num: i32, string: &str) {
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hash_test_specialize(num, string);
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}
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#[inline(never)]
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#[no_panic]
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fn hash_test_random(num: i32, string: &str) -> (u64, u64) {
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let build_hasher1 = RandomState::with_seeds(1, 2, 3, 4);
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let build_hasher2 = RandomState::with_seeds(1, 2, 3, 4);
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(build_hasher1.hash_one(&num), build_hasher2.hash_one(string.as_bytes()))
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}
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#[inline(never)]
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fn hash_test_specialize_wrapper(num: i32, string: &str) {
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hash_test_specialize(num, string);
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}
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#[test]
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fn test_no_panic() {
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hash_test_final_wrapper(2, "Foo");
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hash_test_specialize_wrapper(2, "Bar");
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hash_test_random(2, "Baz");
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hash_test_random_wrapper(2, "Bat");
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}
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