yingkong1987

摘要： IOS中可以使用"mach_absolute_time"获取到CPU的tickcount的计数值，可以通过"mach_timebase_info"函数获取到纳秒级的精确度 代码如下： uint64t start = 0; uint64t end = 0; uint64_t elapsed = 0;mach_timebase_info_t timeBaseInfo = mach_timebase_info(info); start = mach_absolute_time();// dosomething// .....end = mach_absolut 阅读全文