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ENH: inline and extend clockValue, clockTime

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- mostly wraps std::chrono so can inline much of it, which is potentially
  helpful when used for inner timings.

- add elapsedTime() method for direct cast to double and for
  naming similarity with wall-clock method.

Potential breaking change (minor):

- clockValue construct with a bool parameter is now simply tagged
  dispatch (value is ignored) and always queries the current clock
  value. This avoids needless branching.
  Since this constructor form has primarily been used internally (eg,
  clockTime), breakages in user code are not expected.
This commit is contained in:
Mark Olesen
2020-05-28 22:45:04 +02:00
parent 45a05012c6
commit e3367dbdc1
9 changed files with 235 additions and 176 deletions
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13
applications/test/clock/Test-clock.C
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@ -5,7 +5,7 @@
\\ / A nd | www.openfoam.com
\\/ M anipulation |
-------------------------------------------------------------------------------
Copyright (C) 2018-2019 OpenCFD Ltd.
Copyright (C) 2018-2020 OpenCFD Ltd.
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
@ -31,8 +31,8 @@ Description
#include "OSspecific.H"
#include "clock.H"
#include "clockTime.H"
#include "cpuTime.H"
#include "clockValue.H"
#include "cpuTime.H"
using namespace Foam;
@ -42,7 +42,7 @@ void testEpoch()
{
Info<< nl << "Test epoch" << nl;
ClockValue now(true);
const auto now = ClockValue::now();
Info<< "epoch = " << now.str() << " # day-hh:mm::ss" << nl
<< "epoch = " << now << nl;
@ -73,7 +73,8 @@ void testElapsed()
<< "elapsed = " << a.elapsed().seconds() << nl
<< "elapsed = " << a.elapsed().str() << nl;
ClockValue b(true);
const ClockValue b(true); // ClockValue::now()
Info<< "clockValue() " << b << nl;
Info<< "(" << b << " - " << a << ") = " << (b - a) << nl;
Info<< "(" << b << " + " << a << ") = " << (b + a) << nl;
@ -86,7 +87,7 @@ void testElapsed()
int main(int argc, char *argv[])
{
{
Foam::clock sysClock();
Foam::clock sysClock;
Info<< "clock: date " << clock::date() << nl
<< "clock: time " << clock::clockTime() << nl
@ -116,8 +117,8 @@ int main(int argc, char *argv[])
Info<< "sleep 2..." << endl;
sleep(2);
Info<< "elapsed = " << clk.elapsedTime() << nl;
Info<< "increment = " << clk.timeIncrement() << nl;
Info<< "elapsed = " << clk.elapsedTime() << nl;
}
Info<< "End\n" << endl;