RTServerImpl.cc File Reference

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Detailed Description

Implementation of the RTServerImpl class.

Definition in file RTServerImpl.cc.

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Defines
#define	MHZ_SLOP   2
	The acceptable difference in successive guesses of the machines Mhz.
Typedefs
typedef signed long long int	cycle_time
	Type used for cycle counter values.
typedef double	us_time
	Type used for time value in microseconds.
Functions
cycle_time	rdtsc (void)
us_time	cycle_to_us (cycle_time c)
	Convert a cycle count value generated by rdtsc to a microsecond value.
cycle_time	us_to_cycle (us_time us)
	Convert a microsecond value to cycle count value.
us_time	get_timeval_us (void)
double	my_fabs (double d)
double	FindMHZ (void)
Variables
double	MHZ
	The CPU frequency for this machine, in megahertz.

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Define Documentation

#define MHZ_SLOP   2

The acceptable difference in successive guesses of the machines Mhz. See also: FindMHZ Definition at line 62 of file RTServerImpl.cc. Referenced by FindMHZ().

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Function Documentation

us_time cycle_to_us (  cycle_time  c  )  [inline, static]

Convert a cycle count value generated by rdtsc to a microsecond value. Parameters: c  The cycle value to convert. Returns: The 'c' value converted to microseconds. Definition at line 81 of file RTServerImpl.cc. References MHZ, and us_time.

double FindMHZ (  void   )  [static]

Returns: The detected Mhz for the machine where this is running. Definition at line 126 of file RTServerImpl.cc. References cycle_time, get_timeval_us(), MHZ_SLOP, my_fabs(), rdtsc(), and us_time. Referenced by RTServerImpl::RTServerImpl().

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us_time get_timeval_us (  void   )  [static]

Returns: The current time of day in microseconds. Definition at line 100 of file RTServerImpl.cc. References us_time. Referenced by FindMHZ().

double my_fabs (  double  d  )  [static]

Parameters: d  A double value. Returns: The absolute value of d. Definition at line 114 of file RTServerImpl.cc. Referenced by FindMHZ().

cycle_time rdtsc (  void   )  [inline, static]

Returns: The current value of the x86 timestamp counter. Definition at line 68 of file RTServerImpl.cc. References cycle_time. Referenced by FindMHZ(), and RTServerImpl::Periodic().

cycle_time us_to_cycle (  us_time  us  )  [inline, static]

Convert a microsecond value to cycle count value. Parameters: us  The microsecond value to convert. Returns: The 'us' value converted to a cycle count. Definition at line 92 of file RTServerImpl.cc. References cycle_time, and MHZ. Referenced by RTServerImpl::Periodic().

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