1 // Copyright 2008 Google Inc. All Rights Reserved.
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
7 // http://www.apache.org/licenses/LICENSE-2.0
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.
15 #ifndef STRESSAPPTEST_ADLER32MEMCPY_H_
16 #define STRESSAPPTEST_ADLER32MEMCPY_H_
21 // Encapsulation for Adler checksum. Please see adler32memcpy.cc for more
22 // detail on the adler checksum algorithm.
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);
35 // Components of Adler checksum.
36 uint64 a1_, a2_, b1_, b2_;
38 DISALLOW_COPY_AND_ASSIGN(AdlerChecksum);
41 // Calculates Adler checksum for supplied data.
42 bool CalculateAdlerChecksum(uint64 *data64, unsigned int size_in_bytes,
43 AdlerChecksum *checksum);
45 // C implementation of Adler memory copy.
46 bool AdlerMemcpyC(uint64 *dstmem64, uint64 *srcmem64,
47 unsigned int size_in_bytes, AdlerChecksum *checksum);
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);
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);
59 #endif // STRESSAPPTEST_ADLER32MEMCPY_H_