1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef BASE_HASH_H_ 6 #define BASE_HASH_H_ 7 8 #include <string> 9 10 #include "base/base_export.h" 11 #include "base/basictypes.h" 12 13 namespace base { 14 15 // From http://www.azillionmonkeys.com/qed/hash.html 16 // This is the hash used on WebCore/platform/stringhash 17 BASE_EXPORT uint32 SuperFastHash(const char * data, int len); 18 19 inline uint32 Hash(const char* key, size_t length) { 20 return SuperFastHash(key, static_cast<int>(length)); 21 } 22 23 inline uint32 Hash(const std::string& key) { 24 if (key.empty()) 25 return 0; 26 return SuperFastHash(key.data(), static_cast<int>(key.size())); 27 } 28 29 } // namespace base 30 31 #endif // BASE_HASH_H_ 32
