move RtimerFd, ReventFd to librtools

tools/src/librtools/ReventFd.cpp

@@ -0,0 +1,82 @@
+// $Id: ReventFd.cpp 1089 2018-12-19 10:45:41Z mueller $
+//
+// Copyright 2013-2018 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 3, 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
+// 2018-12-18  1089   1.0.1  use c++ style casts
+// 2013-01-14   475   1.0    Initial version
+// 2013-01-11   473   0.5    First draft
+// ---------------------------------------------------------------------------
+
+/*!
+  \file
+  \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