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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #ifndef COMPONENTS_RAPPOR_BLOOM_FILTER_H_ | 5 #ifndef COMPONENTS_RAPPOR_BLOOM_FILTER_H_ |
| 6 #define COMPONENTS_RAPPOR_BLOOM_FILTER_H_ | 6 #define COMPONENTS_RAPPOR_BLOOM_FILTER_H_ |
| 7 | 7 |
| 8 #include <stdint.h> |
| 9 |
| 8 #include <string> | 10 #include <string> |
| 9 | 11 |
| 10 #include "base/basictypes.h" | |
| 11 #include "base/macros.h" | 12 #include "base/macros.h" |
| 12 #include "components/rappor/byte_vector_utils.h" | 13 #include "components/rappor/byte_vector_utils.h" |
| 13 | 14 |
| 14 namespace rappor { | 15 namespace rappor { |
| 15 | 16 |
| 16 // BloomFilter is a simple Bloom filter for keeping track of a set of strings. | 17 // BloomFilter is a simple Bloom filter for keeping track of a set of strings. |
| 17 class BloomFilter { | 18 class BloomFilter { |
| 18 public: | 19 public: |
| 19 // Constructs a BloomFilter using |bytes_size| bytes of Bloom filter bits, | 20 // Constructs a BloomFilter using |bytes_size| bytes of Bloom filter bits, |
| 20 // and |hash_function_count| hash functions to set bits in the filter. The | 21 // and |hash_function_count| hash functions to set bits in the filter. The |
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| 54 uint64_t GetBloomBits(uint32_t bytes_size, | 55 uint64_t GetBloomBits(uint32_t bytes_size, |
| 55 uint32_t hash_function_count, | 56 uint32_t hash_function_count, |
| 56 uint32_t hash_seed_offset, | 57 uint32_t hash_seed_offset, |
| 57 const std::string& str); | 58 const std::string& str); |
| 58 | 59 |
| 59 } // namespace internal | 60 } // namespace internal |
| 60 | 61 |
| 61 } // namespace rappor | 62 } // namespace rappor |
| 62 | 63 |
| 63 #endif // COMPONENTS_RAPPOR_BLOOM_FILTER_H_ | 64 #endif // COMPONENTS_RAPPOR_BLOOM_FILTER_H_ |
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