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.
23class 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.
42bool CalculateAdlerChecksum(uint64 *data64, unsigned int size_in_bytes,
43                            AdlerChecksum *checksum);
44
45// C implementation of Adler memory copy.
46bool 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.
51bool 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.
55bool AdlerMemcpyAsm(uint64 *dstmem64, uint64 *srcmem64,
56                    unsigned int size_in_bytes, AdlerChecksum *checksum);
57
58
59#endif  // STRESSAPPTEST_ADLER32MEMCPY_H_
60