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131 lines
3.5 KiB
C++
131 lines
3.5 KiB
C++
/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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\\ / O peration |
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\\ / A nd | Copyright (C) 2010-2010 OpenCFD Ltd.
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\\/ M anipulation |
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-------------------------------------------------------------------------------
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License
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This file is part of OpenFOAM.
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OpenFOAM is free software: you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
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Class
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Foam::memInfo
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Description
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Memory usage information for the process running this object.
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Note
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Uses the information from /proc/\<pid\>/status
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SourceFiles
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memInfo.C
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\*---------------------------------------------------------------------------*/
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#ifndef memInfo_H
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#define memInfo_H
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#include "OSspecific.H"
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#include "POSIX.H"
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#include "IFstream.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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namespace Foam
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{
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/*---------------------------------------------------------------------------*\
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Class memInfo Declaration
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\*---------------------------------------------------------------------------*/
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class memInfo
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{
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// Private data
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//- Peak memory used by the process (VmPeak in /proc/\<pid\>/status)
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int peak_;
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//- Memory used by the process (VmSize in /proc/\<pid\>/status)
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int size_;
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//- Resident set size of the process (VmRSS in /proc/\<pid\>/status)
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int rss_;
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public:
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// Constructors
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//- Construct null
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memInfo();
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//- Destructor
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~memInfo();
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// Member Functions
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//- Parse /proc/\<pid\>/status
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const memInfo& update();
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// Access
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//- Access the stored peak memory (VmPeak in /proc/\<pid\>/status)
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// The value is stored from the previous update()
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int peak() const
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{
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return peak_;
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}
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//- Access the stored memory size (VmSize in /proc/\<pid\>/status)
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// The value is stored from the previous update()
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int size() const
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{
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return size_;
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}
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//- Access the stored rss value (VmRSS in /proc/\<pid\>/status)
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// The value is stored from the previous update()
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int rss() const
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{
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return rss_;
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}
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//- True if the memory information appears valid
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bool valid() const;
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// IOstream Operators
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//- Read peak/size/rss from stream
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friend Istream& operator>>(Istream&, memInfo&);
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//- Write peak/size/rss to stream
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friend Ostream& operator<<(Ostream&, const memInfo&);
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};
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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} // End namespace Foam
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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#endif
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// ************************************************************************* //
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