vala：这是以毫秒为单位获取当前时间的正确方法吗？(vala: is this the correct way to get the current time in milliseconds ?)

 好的，最后我自己得到了答案...... 
 
 我们在这个问题上遇到的第一件事是在执行模拟器时得到以下警告。 
 
 警告：SD卡文件必须至少为9MB，忽略/ dev / sdX 
 
 跟踪main.c中的源代码后， 
 
   if (size < 9*1024*1024ULL) {
           fprintf(stderr, "### WARNING: SD Card files must be at least 9MB, ignoring '%s'\n", opts->sdcard);
        } else {
            hw->hw_sdCard_path = ASTRDUP(opts->sdcard);
        }
 
 我忽略了if条件，即强制执行hw-> hw_sdCard_path = ASTRDUP（opts-> sdcard）; 
 
 一切顺利:) 

OK, finally I got the answer by myself...
 
first thing we occured in this issue is got below warning when execute emulator.
 
WARNING: SD Card files must be at least 9MB, ignoring /dev/sdX
 
after traced the source code in main.c,
 
   if (size < 9*1024*1024ULL) {
           fprintf(stderr, "### WARNING: SD Card files must be at least 9MB, ignoring '%s'\n", opts->sdcard);
        } else {
            hw->hw_sdCard_path = ASTRDUP(opts->sdcard);
        }
 
I ignored the if condition, i.e. force execute hw->hw_sdCard_path = ASTRDUP(opts->sdcard);
 
then, everything go right:)