1// Copyright 2014 Google Inc.
2// All rights reserved.
3//
4// Redistribution and use in source and binary forms, with or without
5// modification, are permitted provided that the following conditions are
6// met:
7//
8// * Redistributions of source code must retain the above copyright
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12// in the documentation and/or other materials provided with the
13// distribution.
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17//
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29
30#ifndef COMMON_LINUX_CRC32_H_
31#define COMMON_LINUX_CRC32_H_
32
33#include <stdint.h>
34
35#include <string>
36
37namespace google_breakpad {
38
39// Updates a CRC32 checksum with |len| bytes from |buf|. |initial| holds the
40// checksum result from the previous update; for the first call, it should be 0.
41uint32_t UpdateCrc32(uint32_t initial, const void* buf, size_t len);
42
43// Computes a CRC32 checksum using |len| bytes from |buf|.
44inline uint32_t ComputeCrc32(const void* buf, size_t len) {
45 return UpdateCrc32(0, buf, len);
46}
47inline uint32_t ComputeCrc32(const std::string& str) {
48 return ComputeCrc32(str.c_str(), str.size());
49}
50
51} // namespace google_breakpad
52
53#endif // COMMON_LINUX_CRC32_H_
54