C++ 获取函数耗时

C++ 记录耗时

#include <sys/timeb.h>
#include <stdio.h>

long long getSystemTime() {
    struct timeb t;
    ftime(&t);
    return 1000 * t.time + t.millitm;
}
{
    long long startTime = getSystemTime();
    long long endTime = getSystemTime();
    long long ticck = (endTime - startTime);
    __android_log_print(ANDROID_LOG_DEBUG, "wmh", "onSearchStatusChanged  S =%llu,E =%llu,ticck = %llu",startTime,endTime,ticck);
}

　　

Java 记录耗时

public class Time {
    public static void main(String[] args) {
        try {
            long startTime = System.currentTimeMillis();
            Thread.sleep(3000);
            long endTime = System.currentTimeMillis();
            System.out.println("time: " + (endTime - startTime) + " ms");
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }
}