Matthias Andreas Benkard | 832a54e | 2019-01-29 09:27:38 +0100 | [diff] [blame] | 1 | package leafnodes |
| 2 | |
| 3 | import ( |
| 4 | "math" |
| 5 | "time" |
| 6 | |
| 7 | "sync" |
| 8 | |
| 9 | "github.com/onsi/ginkgo/types" |
| 10 | ) |
| 11 | |
| 12 | type benchmarker struct { |
| 13 | mu sync.Mutex |
| 14 | measurements map[string]*types.SpecMeasurement |
| 15 | orderCounter int |
| 16 | } |
| 17 | |
| 18 | func newBenchmarker() *benchmarker { |
| 19 | return &benchmarker{ |
| 20 | measurements: make(map[string]*types.SpecMeasurement, 0), |
| 21 | } |
| 22 | } |
| 23 | |
| 24 | func (b *benchmarker) Time(name string, body func(), info ...interface{}) (elapsedTime time.Duration) { |
| 25 | t := time.Now() |
| 26 | body() |
| 27 | elapsedTime = time.Since(t) |
| 28 | |
| 29 | b.mu.Lock() |
| 30 | defer b.mu.Unlock() |
| 31 | measurement := b.getMeasurement(name, "Fastest Time", "Slowest Time", "Average Time", "s", 3, info...) |
| 32 | measurement.Results = append(measurement.Results, elapsedTime.Seconds()) |
| 33 | |
| 34 | return |
| 35 | } |
| 36 | |
| 37 | func (b *benchmarker) RecordValue(name string, value float64, info ...interface{}) { |
| 38 | b.mu.Lock() |
| 39 | measurement := b.getMeasurement(name, "Smallest", " Largest", " Average", "", 3, info...) |
| 40 | defer b.mu.Unlock() |
| 41 | measurement.Results = append(measurement.Results, value) |
| 42 | } |
| 43 | |
| 44 | func (b *benchmarker) RecordValueWithPrecision(name string, value float64, units string, precision int, info ...interface{}) { |
| 45 | b.mu.Lock() |
| 46 | measurement := b.getMeasurement(name, "Smallest", " Largest", " Average", units, precision, info...) |
| 47 | defer b.mu.Unlock() |
| 48 | measurement.Results = append(measurement.Results, value) |
| 49 | } |
| 50 | |
| 51 | func (b *benchmarker) getMeasurement(name string, smallestLabel string, largestLabel string, averageLabel string, units string, precision int, info ...interface{}) *types.SpecMeasurement { |
| 52 | measurement, ok := b.measurements[name] |
| 53 | if !ok { |
| 54 | var computedInfo interface{} |
| 55 | computedInfo = nil |
| 56 | if len(info) > 0 { |
| 57 | computedInfo = info[0] |
| 58 | } |
| 59 | measurement = &types.SpecMeasurement{ |
| 60 | Name: name, |
| 61 | Info: computedInfo, |
| 62 | Order: b.orderCounter, |
| 63 | SmallestLabel: smallestLabel, |
| 64 | LargestLabel: largestLabel, |
| 65 | AverageLabel: averageLabel, |
| 66 | Units: units, |
| 67 | Precision: precision, |
| 68 | Results: make([]float64, 0), |
| 69 | } |
| 70 | b.measurements[name] = measurement |
| 71 | b.orderCounter++ |
| 72 | } |
| 73 | |
| 74 | return measurement |
| 75 | } |
| 76 | |
| 77 | func (b *benchmarker) measurementsReport() map[string]*types.SpecMeasurement { |
| 78 | b.mu.Lock() |
| 79 | defer b.mu.Unlock() |
| 80 | for _, measurement := range b.measurements { |
| 81 | measurement.Smallest = math.MaxFloat64 |
| 82 | measurement.Largest = -math.MaxFloat64 |
| 83 | sum := float64(0) |
| 84 | sumOfSquares := float64(0) |
| 85 | |
| 86 | for _, result := range measurement.Results { |
| 87 | if result > measurement.Largest { |
| 88 | measurement.Largest = result |
| 89 | } |
| 90 | if result < measurement.Smallest { |
| 91 | measurement.Smallest = result |
| 92 | } |
| 93 | sum += result |
| 94 | sumOfSquares += result * result |
| 95 | } |
| 96 | |
| 97 | n := float64(len(measurement.Results)) |
| 98 | measurement.Average = sum / n |
| 99 | measurement.StdDeviation = math.Sqrt(sumOfSquares/n - (sum/n)*(sum/n)) |
| 100 | } |
| 101 | |
| 102 | return b.measurements |
| 103 | } |