Paul Davis
696f3bdda5
git-svn-id: svn://localhost/ardour2/branches/3.0@11836 d708f5d6-7413-0410-9779-e7cbd77b26cf
137 lines
2.6 KiB
C++
137 lines
2.6 KiB
C++
/*
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Copyright (C) 1998, 1999, 2000, 2007 John Anderson
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef timer_h
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#define timer_h
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#ifdef _WIN32
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#include "windows.h"
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#else
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#include <sys/time.h>
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#endif
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namespace Mackie
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{
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/**
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millisecond timer class.
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*/
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class Timer
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{
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public:
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/**
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start the timer running if true, or just create the
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object if false.
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*/
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Timer( bool shouldStart = true )
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{
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if ( shouldStart )
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start();
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}
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/**
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Start the timer running. Return the current timestamp, in milliseconds
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*/
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unsigned long start()
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{
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#ifdef _WIN32
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_start = (unsigned long)::GetTickCount();
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#else
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gettimeofday ( &_start, 0 );
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#endif
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running = true;
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#ifdef _WIN32
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return _start;
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#else
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return ( _start.tv_sec * 1000000 + _start.tv_usec ) / 1000;
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#endif
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}
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/**
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returns the number of milliseconds since start
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also stops the timer running
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*/
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unsigned long stop()
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{
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#ifdef _WIN32
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_stop = (unsigned long)::GetTickCount();
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#else
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gettimeofday ( &_stop, 0 );
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#endif
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running = false;
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return elapsed();
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}
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/**
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returns the number of milliseconds since start
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*/
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unsigned long elapsed() const
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{
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if ( running )
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{
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#ifdef _WIN32
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DWORD current = ::GetTickCount();
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return current - _start;
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#else
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struct timeval current;
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gettimeofday ( ¤t, 0 );
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return (
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( current.tv_sec * 1000000 + current.tv_usec ) - ( _start.tv_sec * 1000000 + _start.tv_usec )
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) / 1000
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;
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#endif
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}
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else
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{
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#ifdef _WIN32
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return _stop - _start;
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#else
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return (
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( _stop.tv_sec * 1000000 + _stop.tv_usec ) - ( _start.tv_sec * 1000000 + _start.tv_usec )
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) / 1000
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;
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#endif
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}
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}
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/**
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Call stop and then start. Return the value from stop.
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*/
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unsigned long restart()
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{
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unsigned long retval = stop();
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start();
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return retval;
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}
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private:
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#ifdef _WIN32
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unsigned long _start;
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unsigned long _stop;
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#else
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struct timeval _start;
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struct timeval _stop;
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#endif
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bool running;
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};
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}
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#endif
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