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[/] [w11/] [tags/] [w11a_V0.6/] [tools/] [src/] [librlink/] [ReventFd.cpp] - Rev 24
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// $Id: ReventFd.cpp 529 2013-08-02 17:15:43Z mueller $ // // Copyright 2013- by Walter F.J. Mueller <W.F.J.Mueller@gsi.de> // // This program is free software; you may redistribute and/or modify it under // the terms of the GNU General Public License as published by the Free // Software Foundation, either version 2, or at your option any later version. // // This program 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 complete details. // // Revision History: // Date Rev Version Comment // 2013-01-14 475 1.0 Initial version // 2013-01-11 473 0.5 First draft // --------------------------------------------------------------------------- /*! \file \version $Id: ReventFd.cpp 529 2013-08-02 17:15:43Z mueller $ \brief Implemenation of class ReventFd. */ #include <errno.h> #include <unistd.h> #include <sys/eventfd.h> #include "ReventFd.hpp" #include "librtools/Rexception.hpp" using namespace std; /*! \class Retro::ReventFd \brief FIXME_docs */ // all method definitions in namespace Retro namespace Retro { //------------------------------------------+----------------------------------- //! FIXME_docs ReventFd::ReventFd() { fFd = ::eventfd(0,0); // ini value = 0; no flags if (fFd < 0) throw Rexception("ReventFd::ctor", "eventfd() failed: ", errno); } //------------------------------------------+----------------------------------- //! FIXME_docs ReventFd::~ReventFd() { ::close(fFd); } //------------------------------------------+----------------------------------- //! FIXME_docs int ReventFd::SignalFd(int fd) { uint64_t one(1); int irc = ::write(fd, &one, sizeof(one)); return irc; } //------------------------------------------+----------------------------------- //! FIXME_docs int ReventFd::WaitFd(int fd) { uint64_t buf; int irc = ::read(fd, &buf, sizeof(buf)); return (irc <= 0) ? irc : (int)buf; } } // end namespace Retro