| 60 | } |
| 61 | |
| 62 | void SampleQueue::TrimQueue() { |
| 63 | // Last Time - First Time <= Pre-trig time. Note that we must include start |
| 64 | // sample, so ignore the last sample |
| 65 | const auto start_time = writer_.StartTime(); |
| 66 | const auto pre_trig_time = writer_.PreTrigTimeNs(); |
| 67 | |
| 68 | while (queue_.size() > 1) { |
| 69 | |
| 70 | const auto next_time = queue_[1].timestamp; |
| 71 | const auto last_time = queue_.back().timestamp; |
| 72 | if (start_time > 0) { |
| 73 | // Measurement started |
| 74 | if (next_time >= start_time - pre_trig_time) { |
| 75 | break; |
| 76 | } |
| 77 | } else { |
| 78 | // Measurement not started. The queue shall be at least the pre-trig time |
| 79 | const auto buffer_time = last_time - next_time; |
| 80 | if (buffer_time <= pre_trig_time) { |
| 81 | break; |
| 82 | } |
| 83 | } |
| 84 | PopSample(); |
| 85 | } |
| 86 | } |
| 87 | |
| 88 | void SampleQueue::SaveQueue(std::unique_lock<std::mutex>& lock) { |
| 89 | // Save uncompressed data in last DG3 block |
no test coverage detected