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OpenTTD
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Public Member Functions | |
| PerformanceData (double expected_rate) | |
| Initialize a data element with an expected collection rate. More... | |
| void | Add (TimingMeasurement start_time, TimingMeasurement end_time) |
| Collect a complete measurement, given start and ending times for a processing block. | |
| void | BeginAccumulate (TimingMeasurement start_time) |
| Begin an accumulation of multiple measurements into a single value, from a given start time. | |
| void | AddAccumulate (TimingMeasurement duration) |
| Accumulate a period onto the current measurement. | |
| void | AddPause (TimingMeasurement start_time) |
| Indicate a pause/expected discontinuity in processing the element. | |
| double | GetAverageDurationMilliseconds (int count) |
| Get average cycle processing time over a number of data points. | |
| double | GetRate () |
| Get current rate of a performance element, based on approximately the past one second of data. | |
Data Fields | |
| TimingMeasurement | durations [NUM_FRAMERATE_POINTS] |
| Time spent processing each cycle of the performance element, circular buffer. | |
| TimingMeasurement | timestamps [NUM_FRAMERATE_POINTS] |
| Start time of each cycle of the performance element, circular buffer. | |
| double | expected_rate |
| Expected number of cycles per second when the system is running without slowdowns. | |
| int | next_index |
Next index to write to in durations and timestamps. | |
| int | prev_index |
Last index written to in durations and timestamps. | |
| int | num_valid |
Number of data points recorded, clamped to NUM_FRAMERATE_POINTS. | |
| TimingMeasurement | acc_duration |
| Current accumulated duration. | |
| TimingMeasurement | acc_timestamp |
| Start time for current accumulation cycle. | |
Static Public Attributes | |
| static const TimingMeasurement | INVALID_DURATION = UINT64_MAX |
| Duration value indicating the value is not valid should be considered a gap in measurements. | |
Definition at line 40 of file framerate_gui.cpp.
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inlineexplicit |
Initialize a data element with an expected collection rate.
| expected_rate | Expected number of cycles per second of the performance element. Use 1 if unknown or not relevant. The rate is used for highlighting slow-running elements in the GUI. |
Definition at line 68 of file framerate_gui.cpp.