Creation of OpenFOAM-dev repository 15/04/2008

src/OSspecific/Unix/clockTime/clockTime.C

@@ -0,0 +1,88 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 1991-2007 OpenCFD Ltd.
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+License
+    This file is part of OpenFOAM.
+
+    OpenFOAM is free software; you can redistribute it and/or modify it
+    under the terms of the GNU General Public License as published by the
+    Free Software Foundation; either version 2 of the License, or (at your
+    option) any later version.
+
+    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+    for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with OpenFOAM; if not, write to the Free Software Foundation,
+    Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+
+\*---------------------------------------------------------------------------*/
+
+#include "clockTime.H"
+#include "scalar.H"
+#include <sys/time.h>
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+namespace Foam
+{
+
+// * * * * * * * * * * * * * * * Static Members  * * * * * * * * * * * * * * //
+
+
+// * * * * * * * * * * * * * Private Member Functions  * * * * * * * * * * * //
+
+void clockTime::getTime(struct timeval& t)
+{
+    gettimeofday(&t, NULL);
+}
+
+
+double clockTime::timeDifference
+(
+    const struct timeval& start,
+    const struct timeval& end
+)
+{
+    return end.tv_sec - start.tv_sec + 1E-6*(end.tv_usec - start.tv_usec);
+}
+
+
+// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
+
+clockTime::clockTime()
+{
+    getTime(startTime_);
+    lastTime_ = startTime_;
+    newTime_ = startTime_;
+}
+
+
+// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
+
+double clockTime::elapsedTime() const
+{
+    getTime(newTime_);
+    return timeDifference(startTime_, newTime_);
+}
+
+
+double clockTime::timeIncrement() const
+{
+    lastTime_ = newTime_;
+    getTime(newTime_);
+    return timeDifference(lastTime_, newTime_);
+}
+
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+} // End namespace Foam
+
+// ************************************************************************* //

src/OSspecific/Unix/clockTime/clockTime.H

@@ -0,0 +1,96 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 1991-2007 OpenCFD Ltd.
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+License
+    This file is part of OpenFOAM.
+
+    OpenFOAM is free software; you can redistribute it and/or modify it
+    under the terms of the GNU General Public License as published by the
+    Free Software Foundation; either version 2 of the License, or (at your
+    option) any later version.
+
+    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+    for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with OpenFOAM; if not, write to the Free Software Foundation,
+    Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+
+Class
+    Foam::clockTime
+
+Description
+    Starts timing (using rtc) and returns elapsed time from start.
+    Better resolution (2uSec instead of ~20mSec) than cpuTime.
+
+SourceFiles
+    clockTime.C
+
+\*---------------------------------------------------------------------------*/
+
+#ifndef clockTime_H
+#define clockTime_H
+
+#include <sys/types.h>
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+namespace Foam
+{
+
+/*---------------------------------------------------------------------------*\
+                           Class clockTime Declaration
+\*---------------------------------------------------------------------------*/
+
+class clockTime
+{
+    // Private data
+
+        struct timeval startTime_;
+        mutable struct timeval lastTime_;
+        mutable struct timeval newTime_;
+
+        static void getTime(struct timeval& t);
+
+        static double timeDifference
+        (
+            const struct timeval& start,
+            const struct timeval& end
+        );
+
+
+public:
+
+    // Constructors
+
+        //- Construct from components
+        clockTime();
+
+
+    // Member Functions
+
+        // Access
+
+            //- Returns CPU time from start of run
+            double elapsedTime() const;
+
+            //- Returns CPU time from last call of clockTimeIncrement()
+            double timeIncrement() const;
+};
+
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+} // End namespace Foam
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+#endif
+
+// ************************************************************************* //