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// $Id: RtimerFd.cpp 488 2013-02-16 18:49:47Z mueller $
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//
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// Copyright 2013- by Walter F.J. Mueller <W.F.J.Mueller@gsi.de>
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//
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// This program is free software; you may redistribute and/or modify it under
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// the terms of the GNU General Public License as published by the Free
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// Software Foundation, either version 2, or at your option any later version.
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//
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// This program is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY, without even the implied warranty of MERCHANTABILITY
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// or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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// for complete details.
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//
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// Revision History:
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// Date Rev Version Comment
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// 2013-01-11 473 1.0 Initial version
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// ---------------------------------------------------------------------------
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/*!
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\file
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\version $Id: RtimerFd.cpp 488 2013-02-16 18:49:47Z mueller $
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\brief Implemenation of class RtimerFd.
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*/
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#include <errno.h>
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#include <unistd.h>
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#include <sys/timerfd.h>
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#include "RtimerFd.hpp"
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#include "librtools/Rexception.hpp"
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using namespace std;
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/*!
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\class Retro::RtimerFd
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\brief FIXME_docs
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*/
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// all method definitions in namespace Retro
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namespace Retro {
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//------------------------------------------+-----------------------------------
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//! FIXME_docs
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RtimerFd::RtimerFd()
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{
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fFd = timerfd_create(CLOCK_MONOTONIC,0); // use MONOTONIC; no flags
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if (fFd < 0)
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throw Rexception("RtimerFd::<ctor>", "timerfd() failed: ", errno);
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}
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//------------------------------------------+-----------------------------------
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//! FIXME_docs
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RtimerFd::~RtimerFd()
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{
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close(fFd);
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}
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//------------------------------------------+-----------------------------------
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//! FIXME_docs
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void RtimerFd::SetRelTimer(boost::posix_time::time_duration interval,
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boost::posix_time::time_duration initial)
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{
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itimerspec its;
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itimerspec old;
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long sf = 1000000000/interval.ticks_per_second();
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its.it_interval.tv_sec = interval.total_seconds();
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its.it_interval.tv_nsec = interval.fractional_seconds() * sf;
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its.it_value.tv_sec = initial.total_seconds();
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its.it_value.tv_nsec = initial.fractional_seconds() * sf;
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int irc = timerfd_settime(fFd, 0, &its, &old);
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if (irc < 0)
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throw Rexception("RtimerFd::SetRelTimer()", "timerfd() failed: ", errno);
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return;
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}
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} // end namespace Retro
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