基于AOP的代码插桩，都有哪些场景？

function addTimePrinter(targetClass: Object, methodName: string, isStatic: boolean) { 
  let count: number = 0 
  let t1 = 0; 
  let t2 = 0; 
  util.Aspect.addBefore(targetClass, methodName, isStatic, () => { 
    t1 = new Date().getTime(); 
  }) 
  util.Aspect.addAfter(targetClass, methodName, isStatic, (instance: Object, ret: number) => { 
 
    count+=1 
    t2 = new Date().getTime(); 
    console.log(methodName+"方法耗时为t2 - t1 = " + (t2 - t1).toString()); 
    console.log(methodName+"方法调用次数为count = " + count); 
    return ret; 
  }) 
} 
 
function doSomeWork(time: number) { 
  let start = Date.now() 
  while (Date.now()-start<time){ 
    continue 
  } 
  console.log('延时 '+time+"ms"); 
} 
 
export class Test { 
  delay1000() { 
    doSomeWork(1000);  // 1000ms的任务 
  } 
  static delay2000() { 
    doSomeWork(2000);  // 1000ms的任务 
  } 
} 
addTimePrinter(Test,'delay1000',false) 
addTimePrinter(Test,'delay2000',true)
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import { BusinessError } from '@kit.BasicServicesKit'; 
import { GlobalThis} from '../utils/GlobalThis' 
import util from '@ohos.util'; 
 
let context  = GlobalThis.getInstance().getContext("context") 
 
export function Jump(){ 
  let want: Want = { 
    bundleName: 'com.example.myapplication_taskpool_settime', 
    abilityName: 'EntryAbility' 
  }; 
  try { 
    context?.startAbility(want, (err: BusinessError) => { 
      if (err.code) { 
        // 处理业务逻辑错误 
        console.error(`testtag startAbility failed, code is ${err.code}, message is ${err.message}`); 
        return; 
      } 
      // 执行正常业务 
      console.info('testtag startAbility succeed'); 
    }); 
  } catch (err) { 
    // 处理入参错误异常 
    let code = (err as BusinessError).code; 
    let message = (err as BusinessError).message; 
    console.error(`testtag  startAbility failed, code is ${code}, message is ${message}`); 
    console.error(`testtag  startAbility failed, code is ${code}, message is ${message}`); 
  } 
} 
 
util.Aspect.addAfter(context?.constructor, "startAbility", false, (instance: Object, ret: Object, want: Want): void => { 
    console.error("testtag 获取目标包名"+want?.bundleName); 
  } 
);
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//获取来源包名 
util.Aspect.addBefore(EntryAbility, "onCreate", false, (instance: EntryAbility, want: Want): void => { 
  let params = want.parameters as Record<string, Object>; 
  console.error('testtag 获取来源包名'+params['ohos.aafwk.param.callerBundleName']); 
});
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