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linux 和 windwos 时钟精度的差别 #6

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tnie opened this issue Apr 10, 2018 · 0 comments
Open

linux 和 windwos 时钟精度的差别 #6

tnie opened this issue Apr 10, 2018 · 0 comments

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@tnie
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tnie commented Apr 10, 2018 •
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在 widows 下发现 system_clock 的精度介于纳秒和微秒之间，怪纠结的。

#define _XTIME_NSECS_PER_TICK	100
#define _XTIME_TICKS_PER_TIME_T	(long long)10000000

struct system_clock
{	// wraps GetSystemTimePreciseAsFileTime/GetSystemTimeAsFileTime
	typedef long long rep;
	typedef ratio_multiply<ratio<_XTIME_NSECS_PER_TICK, 1>, nano> period;

我觉得 linux 不会做这种蛋疼的事情（尚未验证），所以 linux 和 windows 的时钟精度可能就会有差异了。
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@tnie