Current File : //opt/cpanel/ea-ruby27/src/passenger-release-6.0.23/src/cxx_supportlib/Algorithms/Hasher.cpp
/*
* Phusion Passenger - https://www.phusionpassenger.com/
* Copyright (c) 2014-2018 Phusion Holding B.V.
*
* "Passenger", "Phusion Passenger" and "Union Station" are registered
* trademarks of Phusion Holding B.V.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
// Implementation is in its own file so that we can enable compiler optimizations for these functions only.
#include <Algorithms/Hasher.h>
namespace Passenger {
void
JenkinsHash::update(const char *data, unsigned int size) {
const char *end = data + size;
while (data < end) {
hash += *data;
hash += (hash << 10);
hash ^= (hash >> 6);
data++;
}
}
boost::uint32_t
JenkinsHash::finalize() {
hash += (hash << 3);
hash ^= (hash >> 11);
hash += (hash << 15);
return hash;
}
} // namespace Passenger
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