1 // SPDX-License-Identifier: MIT 2 // 3 // Copyright (c) 2011 Google, Inc. 4 // 5 // Permission is hereby granted, free of charge, to any person obtaining a copy 6 // of this software and associated documentation files (the "Software"), to deal 7 // in the Software without restriction, including without limitation the rights 8 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 9 // copies of the Software, and to permit persons to whom the Software is 10 // furnished to do so, subject to the following conditions: 11 // 12 // The above copyright notice and this permission notice shall be included in 13 // all copies or substantial portions of the Software. 14 // 15 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 18 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 20 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 21 // THE SOFTWARE. 22 23 24 /* 25 * Copyright (c) 2017 by Delphix. All rights reserved. 26 */ 27 28 #ifndef _SYS_CITYHASH_H 29 #define _SYS_CITYHASH_H extern __attribute__((visibility("default"))) 30 31 #include <sys/zfs_context.h> 32 33 #ifdef __cplusplus 34 extern "C" { 35 #endif 36 37 /* 38 * Define 1/2/3-argument specialized versions of cityhash4, which can reduce 39 * instruction count (especially multiplication) on some 32-bit arches. 40 */ 41 _SYS_CITYHASH_H uint64_t cityhash1(uint64_t); 42 _SYS_CITYHASH_H uint64_t cityhash2(uint64_t, uint64_t); 43 _SYS_CITYHASH_H uint64_t cityhash3(uint64_t, uint64_t, uint64_t); 44 _SYS_CITYHASH_H uint64_t cityhash4(uint64_t, uint64_t, uint64_t, uint64_t); 45 46 #ifdef __cplusplus 47 } 48 #endif 49 50 #endif /* _SYS_CITYHASH_H */ 51