Function performanceMarkStart

packages/app-backend-core/src/perf.ts:17–76

(
  app: App,
  uid: number,
  instance: ComponentInstance,
  type: string,
  time: number,
  ctx: BackendContext,
)

}>()

export async function performanceMarkStart(
  app: App,
  uid: number,
  instance: ComponentInstance,
  type: string,
  time: number,
  ctx: BackendContext,
) {
  try {
    if (!SharedData.performanceMonitoringEnabled) {
      return
    }
    const appRecord = await getAppRecord(app, ctx)
    if (!appRecord) {
      return
    }
    const componentName = await appRecord.backend.api.getComponentName(instance)
    const groupId = ctx.perfUniqueGroupId++
    const groupKey = `${uid}-${type}`
    appRecord.perfGroupIds.set(groupKey, { groupId, time })
    await addTimelineEvent({
      layerId: 'performance',
      event: {
        time,
        data: {
          component: componentName,
          type,
          measure: 'start',
        },
        title: componentName,
        subtitle: type,
        groupId,
      },
    }, app, ctx)

    if (markEndQueue.has(groupKey)) {
      const {
        app,
        uid,
        instance,
        type,
        time,
      } = markEndQueue.get(groupKey)
      markEndQueue.delete(groupKey)
      await performanceMarkEnd(
        app,
        uid,
        instance,
        type,
        time,
        ctx,
      )
    }
  }
  catch (e) {
    if (SharedData.debugInfo) {
      console.error(e)
    }