This class measures CPU time (both user and system) consumed by current process or thread. The chronometer can be started and stopped multiple times, and measures cumulative time. More...

#include <OSD_Chronometer.hxx>

Inheritance diagram for OSD_Chronometer:

[legend]

Public Member Functions
	OSD_Chronometer (Standard_Boolean theThisThreadOnly=Standard_False)
	Initializes a stopped Chronometer. More...

virtual	~OSD_Chronometer ()
	Destructor. More...

Standard_Boolean	IsStarted () const
	Return true if timer has been started. More...

virtual void	Reset ()
	Stops and Reinitializes the Chronometer. More...

virtual void	Restart ()
	Restarts the Chronometer. More...

virtual void	Stop ()
	Stops the Chronometer. More...

virtual void	Start ()
	Starts (after Create or Reset) or restarts (after Stop) the chronometer. More...

virtual void	Show () const
	Shows the current CPU user and system time on the standard output stream <cout>. The chronometer can be running (laps Time) or stopped. More...

virtual void	Show (Standard_OStream &theOStream) const
	Shows the current CPU user and system time on the output stream <os>. The chronometer can be running (laps Time) or stopped. More...

Standard_Real	UserTimeCPU () const
	Returns the current CPU user time in seconds. The chronometer can be running (laps Time) or stopped. More...

Standard_Real	SystemTimeCPU () const
	Returns the current CPU system time in seconds. The chronometer can be running (laps Time) or stopped. More...

void	Show (Standard_Real &theUserSeconds) const
	Returns the current CPU user time in a variable. The chronometer can be running (laps Time) or stopped. More...

void	Show (Standard_Real &theUserSec, Standard_Real &theSystemSec) const
	Returns the current CPU user and system time in variables. The chronometer can be running (laps Time) or stopped. More...

Static Public Member Functions
static void	GetProcessCPU (Standard_Real &UserSeconds, Standard_Real &SystemSeconds)
	Returns CPU time (user and system) consumed by the current process since its start, in seconds. The actual precision of the measurement depends on granularity provided by the system, and is platform-specific. More...

static void	GetThreadCPU (Standard_Real &UserSeconds, Standard_Real &SystemSeconds)
	Returns CPU time (user and system) consumed by the current thread since its start. Note that this measurement is platform-specific, as threads are implemented and managed differently on different platforms and CPUs. More...

Protected Attributes
Standard_Real	myStartCpuUser

Standard_Real	myStartCpuSys

Standard_Real	myCumulCpuUser

Standard_Real	myCumulCpuSys

Standard_Boolean	myIsStopped

Standard_Boolean	myIsThreadOnly

Detailed Description

This class measures CPU time (both user and system) consumed by current process or thread. The chronometer can be started and stopped multiple times, and measures cumulative time.

If only the thread is measured, calls to Stop() and Show() must occur from the same thread where Start() was called (unless chronometer is stopped); otherwise measurement will yield false values.

Constructor & Destructor Documentation

◆ OSD_Chronometer()

OSD_Chronometer::OSD_Chronometer ( Standard_Boolean theThisThreadOnly = Standard_False )

Initializes a stopped Chronometer.

If ThisThreadOnly is True, measured CPU time will account time of the current thread only; otherwise CPU of the process (all threads, and completed children) is measured.

◆ ~OSD_Chronometer()

virtual OSD_Chronometer::~OSD_Chronometer ( )

virtual

Destructor.

Member Function Documentation

◆ GetProcessCPU()

static void OSD_Chronometer::GetProcessCPU	(	Standard_Real &	UserSeconds,
		Standard_Real &	SystemSeconds
	)

static

Returns CPU time (user and system) consumed by the current process since its start, in seconds. The actual precision of the measurement depends on granularity provided by the system, and is platform-specific.

◆ GetThreadCPU()

static void OSD_Chronometer::GetThreadCPU	(	Standard_Real &	UserSeconds,
		Standard_Real &	SystemSeconds
	)

static

Returns CPU time (user and system) consumed by the current thread since its start. Note that this measurement is platform-specific, as threads are implemented and managed differently on different platforms and CPUs.

void OSD_Chronometer::Show ( Standard_Real & theUserSeconds ) const

inline

Returns the current CPU user time in a variable. The chronometer can be running (laps Time) or stopped.

◆ Show() [4/4]

void OSD_Chronometer::Show	(	Standard_Real &	theUserSec,
		Standard_Real &	theSystemSec
	)		const

Returns the current CPU user and system time in variables. The chronometer can be running (laps Time) or stopped.

◆ Start()

virtual void OSD_Chronometer::Start ( )

virtual

Starts (after Create or Reset) or restarts (after Stop) the chronometer.

Reimplemented in OSD_Timer.

◆ Stop()

virtual void OSD_Chronometer::Stop ( )

virtual

Stops the Chronometer.

Reimplemented in OSD_Timer.

◆ SystemTimeCPU()

Standard_Real OSD_Chronometer::SystemTimeCPU ( ) const

inline

Returns the current CPU system time in seconds. The chronometer can be running (laps Time) or stopped.

◆ UserTimeCPU()

Standard_Real OSD_Chronometer::UserTimeCPU ( ) const

inline

Standard_Real OSD_Chronometer::myStartCpuUser

protected

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

OSD_Chronometer.hxx

Public Member Functions

Static Public Member Functions

Protected Attributes

Detailed Description

Constructor & Destructor Documentation

◆ OSD_Chronometer()

◆ ~OSD_Chronometer()

Member Function Documentation

◆ GetProcessCPU()

◆ GetThreadCPU()

◆ IsStarted()

◆ Reset()

◆ Restart()

◆ Show() [1/4]

◆ Show() [2/4]

◆ Show() [3/4]

◆ Show() [4/4]

◆ Start()

◆ Stop()

◆ SystemTimeCPU()

◆ UserTimeCPU()

Field Documentation

◆ myCumulCpuSys

◆ myCumulCpuUser

◆ myIsStopped

◆ myIsThreadOnly

◆ myStartCpuSys

◆ myStartCpuUser