(n int)
| 71 | } |
| 72 | |
| 73 | func (this *QueryStatManager) TopN(n int) []*QueryStat { |
| 74 | this.locker.Lock() |
| 75 | defer this.locker.Unlock() |
| 76 | |
| 77 | var stats = []*QueryStat{} |
| 78 | for _, stat := range this.statsMap { |
| 79 | stats = append(stats, stat) |
| 80 | } |
| 81 | sort.Slice(stats, func(i, j int) bool { |
| 82 | return stats[i].CostMax > stats[j].CostMax |
| 83 | }) |
| 84 | |
| 85 | if len(stats) > n { |
| 86 | return stats[:n] |
| 87 | } |
| 88 | return stats |
| 89 | } |