PR_TicksPerSecond 编辑

Returns the number of ticks per second currently used to determine the value of /wiki/en-US/docs/Mozilla/Projects/NSPR/Reference/PRIntervalTime.

Syntax

 #include <prinrval.h>

 PRUint32 PR_TicksPerSecond(void);

Returns

An integer between 1000 and 100000 indicating the number of ticks per second counted by /wiki/en-US/docs/Mozilla/Projects/NSPR/Reference/PRIntervalTime on the current platform. This value is platform-dependent and does not change after NSPR is initialized.

Description

The value returned by PR_TicksPerSecond() lies between PR_INTERVAL_MIN and PR_INTERVAL_MAX.

The relationship between a /wiki/en-US/docs/Mozilla/Projects/NSPR/Reference/PRIntervalTime tick and standard clock units is platform-dependent. PR_PR_TicksPerSecond() allows you to discover exactly what that relationship is. Seconds per tick (the inverse of PR_PR_TicksPerSecond()) is always between 10 microseconds and 1 millisecond.