Android native 代码打印当前时间

#include <time.h>

/* return current time in milliseconds */
long get_current_ms() {
    struct timespec res;
    clock_gettime(CLOCK_REALTIME, &res);
    return 1000 * res.tv_sec + res.tv_nsec / 1e6;
}

那么可以这样调用了：

long start = get_current_ms(); // start time

// YOUR CODE HERE

long end = get_current_ms(); // end time
long delta = end - start; // time your code took to exec in ms