| /* |
| * |
| * Copyright 2015, Google Inc. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| */ |
| |
| #include "src/core/lib/support/murmur_hash.h" |
| #include <grpc/support/log.h> |
| #include <grpc/support/string_util.h> |
| #include "test/core/util/test_config.h" |
| |
| #include <string.h> |
| |
| typedef uint32_t (*hash_func)(const void *key, size_t len, uint32_t seed); |
| |
| /* From smhasher: |
| This should hopefully be a thorough and uambiguous test of whether a hash |
| is correctly implemented on a given platform */ |
| |
| static void verification_test(hash_func hash, uint32_t expected) { |
| uint8_t key[256]; |
| uint32_t hashes[256]; |
| uint32_t final = 0; |
| size_t i; |
| |
| memset(key, 0, sizeof(key)); |
| memset(hashes, 0, sizeof(hashes)); |
| |
| /* Hash keys of the form {0}, {0,1}, {0,1,2}... up to N=255,using 256-N as |
| the seed */ |
| |
| for (i = 0; i < 256; i++) { |
| key[i] = (uint8_t)i; |
| hashes[i] = hash(key, i, (uint32_t)(256u - i)); |
| } |
| |
| /* Then hash the result array */ |
| |
| final = hash(hashes, sizeof(hashes), 0); |
| |
| /* The first four bytes of that hash, interpreted as a little-endian integer, |
| is our |
| verification value */ |
| |
| if (expected != final) { |
| gpr_log(GPR_INFO, "Verification value 0x%08X : Failed! (Expected 0x%08x)", |
| final, expected); |
| abort(); |
| } else { |
| gpr_log(GPR_INFO, "Verification value 0x%08X : Passed!", final); |
| } |
| } |
| |
| int main(int argc, char **argv) { |
| grpc_test_init(argc, argv); |
| /* basic tests to verify that things don't crash */ |
| gpr_murmur_hash3("", 0, 0); |
| gpr_murmur_hash3("xyz", 3, 0); |
| verification_test(gpr_murmur_hash3, 0xB0F57EE3); |
| return 0; |
| } |