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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
Implements a timeout mechanism. Usage is as following: timer myTimer(5); // 5 sec .. if (timedOut(myTimer)) { // timed out } else { // do something possible blocking } Constructor set signal handler on sigalarm and alarm(). Destructor clears these. timedOut is macro because setjmp can't be in member function of timer. ?something to do with stack frames. WARNING: setjmp restores complete register state so including local vars held in regs. So if in blocking part something gets calced in a stack based variable make sure it is declared 'volatile'.
Definition in file timer.H.
Go to the source code of this file.
Namespaces | |
namespace | Foam |
Classes | |
class | timer |
Defines | |
#define | timedOut(x) (((x).newTimeOut_ > 0) ? setjmp(Foam::timer::envAlarm) : false) |
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