Re: [PATCH v2 0/1] MR6007: ntdll: Don't use CLOCK_REALTIME_COARSE

[Tatsuyuki Ishi (＠ishitatsuyuki)]

On Thu Jul 11 13:03:05 2024 +0000, Grigory Vasilyev wrote:
> @ishitatsuyuki Using a real-time clock to limit frame time is not a
> rational solution. In such cases, use CLOCK_MONOTONIC. CLOCK_MONOTONIC
> is used by all graphics libraries. The real time clock can change the
> time abruptly, for example in the case of time adjustment via NTP, hence
> you can get unpredictable behavior in your code. Also, the real time
> clock has a higher overhead. In your comment to the commit, I don’t see
> any tests, I only see that you came up with the need for such a solution
> in Wine. Therefore, I ask you to provide tests.

Yeah, but did you know that NtQuerySystemTime() is called internally by Wine's NtDelayExecution()?