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| 1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2013 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 NET_QUIC_CRYPTO_STRIKE_REGISTER_H_ | 5 #ifndef NET_QUIC_CRYPTO_STRIKE_REGISTER_H_ |
| 6 #define NET_QUIC_CRYPTO_STRIKE_REGISTER_H_ | 6 #define NET_QUIC_CRYPTO_STRIKE_REGISTER_H_ |
| 7 | 7 |
| 8 #include <set> | 8 #include <set> |
| 9 #include <utility> | 9 #include <utility> |
| 10 #include <vector> | 10 #include <vector> |
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| 68 NO_STARTUP_PERIOD_NEEDED, | 68 NO_STARTUP_PERIOD_NEEDED, |
| 69 }; | 69 }; |
| 70 | 70 |
| 71 // An external node takes 24 bytes as we don't record the orbit. | 71 // An external node takes 24 bytes as we don't record the orbit. |
| 72 static const uint32 kExternalNodeSize; | 72 static const uint32 kExternalNodeSize; |
| 73 | 73 |
| 74 // We address the nodes by their index in the array. This means that 0 is a | 74 // We address the nodes by their index in the array. This means that 0 is a |
| 75 // valid index. Therefore this is our invalid index. It also has a one bit | 75 // valid index. Therefore this is our invalid index. It also has a one bit |
| 76 // in the LSB position because we tend to store indexes shifted up 8 bits | 76 // in the LSB position because we tend to store indexes shifted up 8 bits |
| 77 // and this distinguishes kNil from (kExternalFlag | 0) << 8. | 77 // and this distinguishes kNil from (kExternalFlag | 0) << 8. |
| 78 static const uint32 kNil; | 78 static const uint32 kNil; |
| 79 | 79 |
| 80 // Our pointers from internal nodes can either point to an internal or | 80 // Our pointers from internal nodes can either point to an internal or |
| 81 // external node. We flag the 24th bit to mark a pointer as external. | 81 // external node. We flag the 24th bit to mark a pointer as external. |
| 82 static const uint32 kExternalFlag; | 82 static const uint32 kExternalFlag; |
| 83 | 83 |
| 84 // Construct a new set which can hold, at most, |max_entries| (which must be | 84 // Construct a new set which can hold, at most, |max_entries| (which must be |
| 85 // less than 2**23). See the comments around StartupType about initial | 85 // less than 2**23). See the comments around StartupType about initial |
| 86 // behaviour. Otherwise, all nonces that are outside +/- |window_secs| from | 86 // behaviour. Otherwise, all nonces that are outside +/- |window_secs| from |
| 87 // the current time will be rejected. Additionally, all nonces that have an | 87 // the current time will be rejected. Additionally, all nonces that have an |
| 88 // orbit value other than |orbit| will be rejected. | 88 // orbit value other than |orbit| will be rejected. |
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| 180 uint32 internal_node_head_; | 180 uint32 internal_node_head_; |
| 181 // internal_nodes_ can't be a scoped_ptr because the type isn't defined in | 181 // internal_nodes_ can't be a scoped_ptr because the type isn't defined in |
| 182 // this header. | 182 // this header. |
| 183 InternalNode* internal_nodes_; | 183 InternalNode* internal_nodes_; |
| 184 scoped_ptr<uint8[]> external_nodes_; | 184 scoped_ptr<uint8[]> external_nodes_; |
| 185 }; | 185 }; |
| 186 | 186 |
| 187 } // namespace net | 187 } // namespace net |
| 188 | 188 |
| 189 #endif // NET_QUIC_CRYPTO_STRIKE_REGISTER_H_ | 189 #endif // NET_QUIC_CRYPTO_STRIKE_REGISTER_H_ |
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