BESStopWatch.h

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00001 // BESStopWatch.h
00002 
00003 // This file is part of bes, A C++ back-end server implementation framework
00004 // for the OPeNDAP Data Access Protocol.
00005 
00006 // Copyright (c) 2004-2009 University Corporation for Atmospheric Research
00007 // Author: Patrick West <pwest@ucar.edu> and Jose Garcia <jgarcia@ucar.edu>
00008 //
00009 // This library is free software; you can redistribute it and/or
00010 // modify it under the terms of the GNU Lesser General Public
00011 // License as published by the Free Software Foundation; either
00012 // version 2.1 of the License, or (at your option) any later version.
00013 // 
00014 // This library is distributed in the hope that it will be useful,
00015 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00016 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00017 // Lesser General Public License for more details.
00018 // 
00019 // You should have received a copy of the GNU Lesser General Public
00020 // License along with this library; if not, write to the Free Software
00021 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00022 //
00023 // You can contact University Corporation for Atmospheric Research at
00024 // 3080 Center Green Drive, Boulder, CO 80301
00025  
00026 // (c) COPYRIGHT University Corporation for Atmospheric Research 2004-2005
00027 // Please read the full copyright statement in the file COPYRIGHT_UCAR.
00028 //
00029 // Authors:
00030 //      pwest       Patrick West <pwest@ucar.edu>
00031 //      jgarcia     Jose Garcia <jgarcia@ucar.edu>
00032 
00033 #ifndef I_BESStopWatch_h
00034 #define I_BESStopWatch_h 1
00035 
00036 #include "sys/time.h"
00037 #include "sys/resource.h"
00038 #if HAVE_UNISTD_H
00039 #include <unistd.h>
00040 #endif
00041 
00042 #include "BESObj.h"
00043 
00044 class BESStopWatch : public BESObj
00045 {
00046 private:
00047     struct rusage               _start_usage ;
00048     struct rusage               _stop_usage ;
00049     struct timeval              _result ;
00050     bool                        _started ;
00051     bool                        _stopped ;
00052     bool                        timeval_subtract() ;
00053 public:
00054                                 BESStopWatch() {}
00055     virtual                     ~BESStopWatch() {}
00056     virtual bool                start() ;
00057     virtual bool                stop() ;
00058     virtual int                 seconds()
00059                                 {
00060                                     if( _stopped ) return _result.tv_sec ;
00061                                     else return 0 ;
00062                                 }
00063     virtual int                 microseconds()
00064                                 {
00065                                     if( _stopped ) return _result.tv_usec ;
00066                                     else return 0 ;
00067                                 }
00068 
00069     virtual void                dump( ostream &strm ) const ;
00070 } ;
00071 
00072 #endif // I_BESStopWatch_h
00073 

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