| // Copyright 2014 Google Inc. All Rights Reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| // |
| // Declares some constants that are used across ASan. |
| |
| #ifndef SYZYGY_AGENT_ASAN_CONSTANTS_H_ |
| #define SYZYGY_AGENT_ASAN_CONSTANTS_H_ |
| |
| namespace agent { |
| namespace asan { |
| |
| // The ratio of shadow memory to actual memory. This governs the behaviour, size |
| // and alignment requirements of many ASan structures. |
| static const size_t kShadowRatioLog = 3; |
| static const size_t kShadowRatio = (1 << kShadowRatioLog); |
| |
| // The size of a page on the OS. |
| extern const size_t kPageSize; |
| |
| // The default sharding factor of the quarantine. This is used to give us linear |
| // access for random removal and insertion of elements into the quarantine. |
| static const size_t kQuarantineDefaultShardingFactor = 128; |
| |
| } // namespace asan |
| } // namespace agent |
| |
| #endif // SYZYGY_AGENT_ASAN_CONSTANTS_H_ |
