1 // Copyright 2008 Google Inc. All Rights Reserved. 2 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 7 // http://www.apache.org/licenses/LICENSE-2.0 8 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 #ifndef STRESSAPPTEST_ADLER32MEMCPY_H_ 16 #define STRESSAPPTEST_ADLER32MEMCPY_H_ 17 18 #include <string> 19 #include "sattypes.h" 20 21 // Encapsulation for Adler checksum. Please see adler32memcpy.cc for more 22 // detail on the adler checksum algorithm. 23 class AdlerChecksum { 24 public: 25 AdlerChecksum() {} 26 ~AdlerChecksum() {} 27 // Returns true if the checksums are equal. 28 bool Equals(const AdlerChecksum &other) const; 29 // Returns string representation of the Adler checksum 30 string ToHexString() const; 31 // Sets components of the Adler checksum. 32 void Set(uint64 a1, uint64 a2, uint64 b1, uint64 b2); 33 34 private: 35 // Components of Adler checksum. 36 uint64 a1_, a2_, b1_, b2_; 37 38 DISALLOW_COPY_AND_ASSIGN(AdlerChecksum); 39 }; 40 41 // Calculates Adler checksum for supplied data. 42 bool CalculateAdlerChecksum(uint64 *data64, unsigned int size_in_bytes, 43 AdlerChecksum *checksum); 44 45 // C implementation of Adler memory copy. 46 bool AdlerMemcpyC(uint64 *dstmem64, uint64 *srcmem64, 47 unsigned int size_in_bytes, AdlerChecksum *checksum); 48 49 // C implementation of Adler memory copy with some float point ops, 50 // attempting to warm up the CPU. 51 bool AdlerMemcpyWarmC(uint64 *dstmem64, uint64 *srcmem64, 52 unsigned int size_in_bytes, AdlerChecksum *checksum); 53 54 // x86_64 SSE2 assembly implementation of fast and stressful Adler memory copy. 55 bool AdlerMemcpyAsm(uint64 *dstmem64, uint64 *srcmem64, 56 unsigned int size_in_bytes, AdlerChecksum *checksum); 57 58 59 #endif // STRESSAPPTEST_ADLER32MEMCPY_H_ 60
