StopWatch

[122006]

StopWatch中的getTotalTimeMillis()可以考虑去掉ms单位转换，直接用微毫秒显示（或者XXmsXXμs） 毕竟大部分时候方法都是0ms但是大量次数运行也有优化的空间

[fengzhizi715]

@122006 好的，我抽空改一下

[fengzhizi715]

@122006 hi 方便加一下微信吗？我想跟你探讨一下这块如何优化比较好。 我的微信号:fengzhizi715

[122006]

@Around("methodAnnotatedWithTrace() || constructorAnnotatedTrace()") public Object traceMethod(final ProceedingJoinPoint joinPoint) throws Throwable { MethodSignature methodSignature = (MethodSignature) joinPoint.getSignature(); String className = methodSignature.getDeclaringType().getSimpleName(); String methodName = methodSignature.getName(); final StopWatch2 stopWatch = new StopWatch2(); stopWatch.start(); Object result = joinPoint.proceed(); stopWatch.stop();

    if (Preconditions.isBlank(className)) {
        className = "Anonymous class";
    }

    mLog.i(buildLogMessage(methodName, stopWatch.getTotalTimeMillis()));

    return result;
}
private static final int ns=1000*1000;

/**
 * Create a log message.
 *
 * @param methodName A string with the method name.
 * @param methodDuration Duration of the method in milliseconds.
 * @return A string representing message.
 */
private static String buildLogMessage(String methodName, long methodDuration) {
    if (methodDuration>10*ns){
        return String.format("%s() take %d ms", methodName,methodDuration/ns);
    }else if (methodDuration>ns){
        return String.format("%s() take %dms %dμs", methodName,methodDuration/ns,methodDuration%ns);
    }else{
        return String.format("%s() take %dμs", methodName,methodDuration%ns);
    }
}

[122006]

public class StopWatch2 { private long startTime; private long endTime; private long elapsedTime;

public StopWatch2() {
}

private void reset() {
    startTime = 0;
    endTime = 0;
    elapsedTime = 0;
}

public void start() {
    reset();
    startTime = System.nanoTime();
}

public void stop() {
    if (startTime != 0) {
        endTime = System.nanoTime();
        elapsedTime = endTime - startTime;
    } else {
        reset();
    }
}

public long getTotalTimeMillis() {
    return (elapsedTime != 0) ? endTime - startTime: 0;
}

}