System Class Reference

Low-level system information and profiling functions. More...

#include <System.hpp>

Static Public Member Functions
static void	beginCycleCount (uint64 &cycle_count)
	Begin a timing operation. More...
static intx	concurrency ()
	Get the hardware concurrency (approximate number of thread contexts). More...
static void	endCycleCount (uint64 &cycle_count)
	End a timing operation. More...
static Endianness	endianness ()
	Get the machine endianness. More...
static void	sleep (intx ms)
	Pause the current thread for a given number of milliseconds. More...
static double	time ()
	The actual time (measured in seconds since Jan 1 1970 midnight). More...

Detailed Description

Low-level system information and profiling functions.

Definition at line 27 of file System.hpp.

Member Function Documentation

void beginCycleCount ( uint64 &  cycle_count )

static

Begin a timing operation.

To count the number of cycles a given operation takes:

  uint64 count;
  System::beginCycleCount(count);
  ...
  System::endCycleCount(count);
  // count now contains the cycle count for the intervening operation.

See also

endCycleCount()

Definition at line 188 of file System.cpp.

intx concurrency ( )

static

Get the hardware concurrency (approximate number of thread contexts).

Definition at line 32 of file System.cpp.

void endCycleCount ( uint64 &  cycle_count )

static

End a timing operation.

See also

beginCycleCount()

Definition at line 194 of file System.cpp.

static Endianness endianness ( )

static

Get the machine endianness.

Definition at line 34 of file System.hpp.

void sleep ( intx  ms )

static

Pause the current thread for a given number of milliseconds.

Definition at line 42 of file System.cpp.

double time ( )

static

The actual time (measured in seconds since Jan 1 1970 midnight).

Adjusted for local timezone and daylight savings time. This is as accurate and fast as getCycleCount().

Definition at line 111 of file System.cpp.

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The documentation for this class was generated from the following files:

• System.hpp
• System.cpp