c语言调试：时间，文件读写等

获取自1970年以来的时间，精确到毫秒

#include 

// 获取时间，精确到毫秒
unsigned int _OsCounterGetMs(void)
{
    struct timeval t1;
    gettimeofday(&t1, NULL);
    unsigned int T = ((1000000 * t1.tv_sec) + t1.tv_usec) / 1000;
    return T;
}



#define D_frame_LEN 128
#define D_SAMPLE_RATE 16000

int main(int argc, char *argv[])
{
    int total_count = 10 * D_SAMPLE_RATE;
    int total_frames = (int)(total_count / D_frame_LEN);
    unsigned int time_begin_ms = _OsCounterGetMs();   // 起始时刻
    for (int i = 0; i < total_frames; i++)
    {
        unsigned int time_now_ms  = _OsCounterGetMs();
        int ms_to_sleep = (int)(i * D_frame_LEN * 1000 / D_SAMPLE_RATE) - (time_now_ms - time_begin_ms);
        if (ms_to_sleep > 0)
        {
            usleep(ms_to_sleep * 1000);
        }
    }
}

#include 
clock_t time0 = clock();
clock_t time1 = clock();
printf("[%s %d] interval: (%f) msn", __FUNCTION__, __LINE__, (double)((time1-time0))/CLOCKS_PER_SEC * 1000);

#include 

FILE *fp0  = fopen("aaa_meldb.txt", "w");
for (int j = 0; j < D_TOTAL_frameS; j++)
{
    for (int k = 0; k < D_TOTAL_FEATS; k++)
    {
        fprintf(fp0, "%f ", afFeatures[j][k]);
    }
    fprintf(fp0, "n");
}
fclose(fp0);