podman
1/*
2* Copyright 2021 ByteDance Inc.
3*
4* Licensed under the Apache License, Version 2.0 (the "License");
5* you may not use this file except in compliance with the License.
6* You may obtain a copy of the License at
7*
8* http://www.apache.org/licenses/LICENSE-2.0
9*
10* Unless required by applicable law or agreed to in writing, software
11* distributed under the License is distributed on an "AS IS" BASIS,
12* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13* See the License for the specific language governing permissions and
14* limitations under the License.
15*/
16
17package caching
18
19import (
20`unsafe`
21
22`github.com/bytedance/sonic/internal/rt`
23)
24
25var (
26V_strhash = rt.UnpackEface(strhash)
27S_strhash = *(*uintptr)(V_strhash.Value)
28)
29
30//go:noescape
31//go:linkname strhash runtime.strhash
32func strhash(_ unsafe.Pointer, _ uintptr) uintptr
33
34func StrHash(s string) uint64 {
35if v := strhash(unsafe.Pointer(&s), 0); v == 0 {
36return 1
37} else {
38return uint64(v)
39}
40}
41