Returns information about the INtime timestamp counter source.

BOOLEAN GetRtTimestampInfo(
    LPTIMESTAMPINFO tsInfo
);

Parameters

Remarks

The INtime timestamp counter has different sources depending on the hardware configuration of the platform. If the HPET facility is available that source is used by default since it is a single counter source of known frequency and accessible from every node on the platform. If the HPET facility is not available then the CPU timestamp counter is used. In the case of the CPU timestamp counter the values may be co-ordinated between nodes (in other words they will count at the same rate) but they will not be synchronized (they will not have exactly the same starting value).

This call returns the period of the configured timestamp counter, in femtoseconds, and flags to indicate the features of the selected source. If the flags TS_COORDINATED and TS_SYNCHRONIZED are both set then the source is guaranteed to return the same value at a given time from every node on the host.

Return Values

TRUE

Success.

FALSE

Failure. The tsInfo parameter was not a valid writable pointer. GetRtLastError returns E_BAD_ADDR.

Requirements