linux c 获取毫秒数

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

long long getCurrentTimeMillis() {
    struct timeval tv;
    gettimeofday(&tv, NULL);
    return (long long)tv.tv_sec * 1000 + (long long)tv.tv_usec / 1000;
}

int main() {
    long long currentTimeMillis = getCurrentTimeMillis();
    printf("Current time in milliseconds: %lld\n", currentTimeMillis);
    return 0;
}

#include <stdio.h>
#include <time.h>

long long getCurrentTimeMillis() {
    struct timespec ts;
    clock_gettime(CLOCK_MONOTONIC, &ts);
    return (long long)ts.tv_sec * 1000 + (long long)ts.tv_nsec / 1000000;
}

int main() {
    long long currentTimeMillis = getCurrentTimeMillis();
    printf("Current time in milliseconds: %lld\n", currentTimeMillis);
    return 0;
}