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ENH: reduce overhead for clockTime, cpuTime

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- clockValue class for managing the clock values only, with a null
  constructor that does not query the system clock (can defer to later).
  Can also be used directly for +/- operations.

- refactor clockTime, cpuTime, clock to reduce storage.
This commit is contained in:
Mark Olesen
2018-03-15 10:01:51 +01:00
parent fb4c99b698
commit 77338c8bd0
10 changed files with 495 additions and 141 deletions
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60
applications/test/POSIX/Test-POSIX.C
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@ -26,6 +26,9 @@ Description
\*---------------------------------------------------------------------------*/
#include "OSspecific.H"
#include "clock.H"
#include "clockTime.H"
#include "cpuTime.H"
using namespace Foam;
@ -34,8 +37,65 @@ using namespace Foam;
int main(int argc, char *argv[])
{
Info<<"rmDir" << nl;
rmDir("hmm");
{
Foam::clock sysClock();
Info<< "clock: date " << clock::date() << nl
<< "clock: time " << clock::clockTime() << nl
<< "clock: iso " << clock::dateTime() << nl;
}
{
clockValue a;
Info<< "clockValue() " << a << nl;
a.update();
Info<< "updated " << a << nl;
Info<< "sleep 4..." << endl;
sleep(4);
a.update();
Info<< " = " << a.seconds() << nl;
Info<< "sleep 2..." << endl;
sleep(2);
Info<< "elapsed = " << a.elapsed() << nl;
Info<< "elapsed = " << a.elapsed().seconds() << nl;
clockValue b = clockValue::now();
Info<< "(" << b << " - " << a << ") = " << (b - a) << nl;
Info<< "(" << b << " + " << a << ") = " << (b + a) << nl;
}
{
clockTime clk;
Info<< "starting clockTime" << nl;
Info<< "sleep 4..." << endl;
sleep(4);
Info<< "increment = " << clk.timeIncrement() << nl;
Info<< "elapsed = " << clk.elapsedTime() << nl;
Info<< "sleep 4..." << endl;
sleep(4);
Info<< "increment = " << clk.timeIncrement() << nl;
Info<< "elapsed = " << clk.elapsedTime() << nl;
Info<< "sleep 2..." << endl;
sleep(2);
Info<< "elapsed = " << clk.elapsedTime() << nl;
Info<< "increment = " << clk.timeIncrement() << nl;
}
Info<< "End\n" << endl;
return 0;