方法“/**
* 性能测量装饰器工厂函数
* @param moduleName
- 模块名
* @param methodName
- 方法名（可选，默认为被装饰方法名）
* @returns 方法装饰器
*
* @remarks
* 支持同步和异步方法的性能测量
* 自动处理异常情况，确保测量不会影响正常业务逻辑
* 集成采样率检查，在测量开始前即决定是否进行性能测量
*/
export function measure
Performance(moduleName: string, methodName?: string): MethodDecorator {
return (target: unknown, propertyKey: string | symbol, descriptor: PropertyDescriptor): PropertyDescriptor => {
const originalMethod: unknown = descriptor.value;
const
profiler:
PerformanceProfiler =
PerformanceProfiler.getInstance();
const config:
ProfilerConfig =
profiler.getConfig();
// 使用方法名或属性键作为方法名
const actualMethodName: string = methodName || String(propertyKey);
// 重新定义方法
descriptor.value = function (...args: unknown[]): unknown {
// 在开始时即进行采样判断，避免不必要的性能开销
if (Math.random() >= config.samplingRate) {
if (typeof originalMethod === 'function') {
return originalMethod.apply(this, args);
}
return undefined;
}
const handle: number =
profiler.start(moduleName, actualMethodName);
try {
// 处理原始方法调用
if (typeof originalMethod !== 'function') {
profiler.end(handle);
return undefined;
}
const result: unknown = originalMethod.apply(this, args);
// 处理异步方法
if (result instanceof Promise) {
return result.finally(() => {
profiler.end(handle);
});
} else {
// 同步方法
profiler.end(handle);
return result;
}
} catch (error) {
// 确保异常情况下也结束测量
profiler.end(handle);
throw error;
}
};
return descriptor;
};”
代码行“ return (target: unknown, propertyKey: string | symbol, descriptor: PropertyDescriptor): PropertyDescriptor => {”报错Use explicit types instead of "any", "unknown" (arkts
-no
-any
-unknown) <ArkTSCheck>和"Symbol()" API is not supported (arkts
-no
-symbol) <ArkTSCheck>
代码行“ const originalMethod: unknown = descriptor.value;”报错Use explicit types instead of "any", "unknown" (arkts
-no
-any
-unknown) <ArkTSCheck>
代码行“ descriptor.value = function (...args: unknown[]): unknown {”报错Use arrow functions instead of function expressions (arkts
-no
-func
-expressions) <ArkTSCheck>和Use explicit types instead of "any", "unknown" (arkts
-no
-any
-unknown) <ArkTSCheck>和Use explicit types instead of "any", "unknown" (arkts
-no
-any
-unknown) <ArkTSCheck>
代码行“ return originalMethod.apply(this, args);”报错"Function.apply", "Function.call" are not supported (arkts
-no
-func
-apply
-call) <ArkTSCheck>和Using "this" inside
stand-alone functions is not supported (arkts
-no
-standalone-this) <ArkTSCheck>
代码行“ const result: unknown = originalMethod.apply(this, args);”报错Use explicit types instead of "any", "unknown" (arkts
-no
-any
-unknown) <ArkTSCheck>和"Function.apply", "Function.call" are not supported (arkts
-no
-func
-apply
-call) <ArkTSCheck>和Using "this" inside
stand-alone functions is not supported (arkts
-no
-standalone-this) <ArkTSCheck>
代码行“ throw error;”报错"throw" statements cannot accept values of arbitrary types (arkts
-limited
-throw) <ArkTSCheck>如何修正？
本文介绍如何在Visual Studio 2005 Professional Edition中使用独立的性能测试工具集进行性能采样。文章详细说明了从配置环境变量到生成分析文件的全过程，并提供了具体的命令行操作步骤。
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