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112 lines
4.2 KiB
Plaintext
112 lines
4.2 KiB
Plaintext
-- Created on: 2018-03-15
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-- Created by: Stephan GARNAUD (ARM)
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-- Copyright (c) 1998-1999 Matra Datavision
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-- Copyright (c) 1999-2014 OPEN CASCADE SAS
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--
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-- This file is part of Open CASCADE Technology software library.
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--
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-- This library is free software; you can redistribute it and/or modify it under
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-- the terms of the GNU Lesser General Public License version 2.1 as published
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-- by the Free Software Foundation, with special exception defined in the file
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-- OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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-- distribution for complete text of the license and disclaimer of any warranty.
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--
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-- Alternatively, this file may be used under the terms of Open CASCADE
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-- commercial license or contractual agreement.
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-- Updated: J.P. TIRAULT August 1993
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-- All methods are static methods.
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-- the "Show" method returns the consumed CPU time in a Real
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-- variable.
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-- J.P. TIRAULT October 15 1994
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-- We measure both user and system cpu time.
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class Chronometer from OSD
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---Purpose: This class measures CPU time (both user and system) consumed
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-- by current process or thread. The chronometer can be started
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-- and stopped multiple times, and measures cumulative time.
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--
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-- If only the thread is measured, calls to Stop() and Show()
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-- must occur from the same thread where Start() was called
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-- (unless chronometer is stopped); otherwise measurement will
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-- yield false values.
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is
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Create (ThisThreadOnly: Boolean = Standard_False) returns Chronometer from OSD;
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---Purpose: Initializes a stopped Chronometer.
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--
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-- If ThisThreadOnly is True, measured CPU time will account
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-- time of the current thread only; otherwise CPU of the
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-- process (all threads, and completed children) is measured.
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--
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---Level: Public
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Destroy ( me : out ) is virtual;
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---C++: alias ~
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Reset (me : in out) is virtual;
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---Purpose: Stops and Reinitializes the Chronometer.
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---Level: Public
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Stop (me : in out) is virtual;
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---Purpose: Stops the Chronometer.
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---Level: Public
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Start (me : in out) is virtual;
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---Purpose: Starts (after Create or Reset) or restarts (after Stop)
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-- the chronometer.
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---Level: Public
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Show (me) is virtual;
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---Purpose: Shows the current CPU user and system time on the
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-- standard output stream <cout>.
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-- The chronometer can be running (laps Time) or stopped.
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---Level: Public
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Show (me; os : in out OStream from Standard) is virtual;
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---Purpose: Shows the current CPU user and system time on the output
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-- stream <os>.
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-- The chronometer can be running (laps Time) or stopped.
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---Level: Public
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Show (me; theUserSeconds : in out Real from Standard);
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---Purpose: Returns the current CPU user time in a variable.
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-- The chronometer can be running (laps Time) or stopped.
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---Level: Public
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Show (me; theUserSeconds : in out Real from Standard;
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theSystemSeconds : in out Real from Standard);
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---Purpose: Returns the current CPU user and system time in variables.
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-- The chronometer can be running (laps Time) or stopped.
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---Level: Public
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GetProcessCPU (myclass; UserSeconds : out Real from Standard;
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SystemSeconds : out Real from Standard);
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---Purpose: Returns CPU time (user and system) consumed by the current
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-- process since its start, in seconds. The actual precision of
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-- the measurement depends on granularity provided by the system,
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-- and is platform-specific.
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---Level: Public
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GetThreadCPU (myclass; UserSeconds : out Real from Standard;
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SystemSeconds : out Real from Standard);
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---Purpose: Returns CPU time (user and system) consumed by the current
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-- thread since its start. Note that this measurement is
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-- platform-specific, as threads are implemented and managed
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-- differently on different platforms and CPUs.
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---Level: Advanced
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fields
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Stopped : Boolean is protected;
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ThreadOnly : Boolean;
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Start_user : Real;
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Start_sys : Real;
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Cumul_user : Real;
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Cumul_sys : Real;
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end;
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