/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* vim: set ts=8 sts=2 et sw=2 tw=80: */ /* This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ /* Implementations of hash functions. */ #include "mozilla/HashFunctions.h" #include "mozilla/Types.h" #include <string.h> namespace mozilla { uint32_t HashBytes(const void* aBytes, size_t aLength) { uint32_t hash = 0; const char* b = reinterpret_cast<const char*>(aBytes); /* Walk word by word. */ size_t i = 0; for (; i < aLength - (aLength % sizeof(size_t)); i += sizeof(size_t)) { /* Do an explicitly unaligned load of the data. */ size_t data; memcpy(&data, b + i, sizeof(size_t)); hash = AddToHash(hash, data, sizeof(data)); } /* Get the remaining bytes. */ for (; i < aLength; i++) { hash = AddToHash(hash, b[i]); } return hash; } } /* namespace mozilla */