TMR.xx-x86-gcc.h File Reference

Provides the implementation of the timing macros on a X86 platform using the GCC compiler. More...

Defines
#define	TMR_GET()
	Macro to get the processor time.
#define	TMR_TO_NSECS(_ticks)   TMR_ticks_to_nsecs (_ticks)
	Convert a delta time in processor time units to nanoseconds.
#define	TMR_FORMAT   "%16lld"
	Provides a uniform way to format timer ticks.
#define	TMR_DELTA(_beg, _end)   ((_end) - (_beg))
	Subtracts two times in ticks, returning the result in ticks.
#define	TMR_DELTA_IN_NSECS(_beg, _end)   TMR_TO_NSECS(TMR_DELTA(_beg, _end))
	Subtracts two times in tickss, returning the result in nanoseconds.
Typedefs
typedef unsigned long long	TMR_tick
	The abstract type of a TMR tick.

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Detailed Description

Provides the implementation of the timing macros on a X86 platform using the GCC compiler.

Author:

JJRussell - russell@slac.stanford.edu

   CVS $Id: TMR.xx-x86-gcc.h,v 1.3 2011/03/25 22:16:55 russell Exp $

ABSTRACT

x86 implementation of the TIMER facility. The implementation is based on-board CPU real time clock.

USAGE

See the documentation for the generic TMR facility.

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Define Documentation

 

#define TMR_GET

(

)

Value:

({                                                       \
          unsigned long long t;                                \
          __asm__ volatile (".byte 0x0f,0x31" : "=A"(t));      \
          (unsigned int)t;                                     \
      })

Macro to get the processor time.

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Typedef Documentation

TMR_tick

The abstract type of a TMR tick.

This is the abstract type returned by TMR_GET(). Since it varies on a machine-by-machine basis, no direct manipulation of this data type should be attempted. Use only the TMR routines and macros with this type.