MSOP_TIME(D2psm)

MSOP_TIME: MSOP_TIME_GET, MSOP_TIME_ADD, MSOP_TIME_SUB MSOP_TIME_CVT, MSOP_TIME_SPIN -- high resolution time operations

Synopsis

   void pfxtime_get(ms_rawtime_t *rawtime)
   void pfxtime_add(ms_rawtime_t *dst,  ms_rawtime_t *src)
   void pfxtime_sub(ms_rawtime_t *dst,  ms_rawtime_t *src)
   void pfxtime_cvt(ms_time_t *time,  ms_rawtime_t *src)
   void pfxtime_spin(unsigned int spin_time)

Description

MSOP_TIME_GET gets the value of a free-running high-resolution clock counter in PSM-specific units. This counter should not wrap around in less than an hour.

MSOP_TIME_ADD adds two PSM-specific high-resolution time values.

MSOP_TIME_SUB subtracts two PSM-specific high-resolution time values.

MSOP_TIME_CVT converts PSM-specific high-resolution time values to seconds and nanoseconds.

MSOP_TIME_SPIN causes the CPU to spin-wait for at least the amount of time specified in spin_time in microseconds. Do not specify too high a value for spin_time, to avoid monopolizing the CPU.

The PSM Time Toolkit includes functions to help implement and calibrate spin-wait loops for MSOP_TIME_SPIN.

Arguments

rawtime: pointer to the kernel data area where the PSM stores the high resolution clock value
dst: time operand, and address to put result of time computation
src: time operand for time computation
time: pointer to the converted time
spin_time: number of milliseconds of spin

Return values

None.

Usage

Hardware applicability

All.

Version applicability

psm: 2