// 记录摘要信息。
func recordSummary(
scheduler sched.Scheduler,
detailSummary bool,
record Record,
stopNotifier <-chan byte) {
go func() {
// 等待调度器开启
waitForSchedulerStart(scheduler)
// 准备
var prevSchedSummary sched.SchedSummary
var prevNumGoroutine int
var recordCount uint64 = 1
startTime := time.Now()
for {
// 查看监控停止通知器
select {
case <-stopNotifier:
return
default:
}
// 获取摘要信息的各组成部分
currNumGoroutine := runtime.NumGoroutine()
currSchedSummary := scheduler.Summary(" ")
// 比对前后两份摘要信息的一致性。只有不一致时才会予以记录。
if currNumGoroutine != prevNumGoroutine ||
!currSchedSummary.Same(prevSchedSummary) {
schedSummaryStr := func() string {
if detailSummary {
return currSchedSummary.Detail()
} else {
return currSchedSummary.String()
}
}()
// 记录摘要信息
info := fmt.Sprintf(summaryForMonitoring,
recordCount,
currNumGoroutine,
schedSummaryStr,
time.Since(startTime).String(),
)
record(0, info)
prevNumGoroutine = currNumGoroutine
prevSchedSummary = currSchedSummary
recordCount++
}
time.Sleep(time.Microsecond)
}
}()
}
