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// $Id: RlinkServer.cpp 513 2013-05-01 14:02:06Z 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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// 2013-05-01 513 1.0.2 fTraceLevel now uint32_t
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// 2013-04-21 509 1.0.1 add Resume(), reorganize server start handling
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// 2013-03-06 495 1.0 Initial version
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// 2013-01-12 474 0.5 First draft
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// ---------------------------------------------------------------------------
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/*!
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\file
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\version $Id: RlinkServer.cpp 513 2013-05-01 14:02:06Z mueller $
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\brief Implemenation of RlinkServer.
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*/
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#include "boost/thread/locks.hpp"
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#include "boost/bind.hpp"
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#include "librtools/Rexception.hpp"
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#include "librtools/RosFill.hpp"
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#include "librtools/RosPrintf.hpp"
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#include "librtools/RosPrintBvi.hpp"
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#include "librtools/Rexception.hpp"
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#include "librtools/RlogMsg.hpp"
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#include "RlinkServer.hpp"
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using namespace std;
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/*!
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\class Retro::RlinkServer
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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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//! Default constructor
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RlinkServer::RlinkServer()
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: fspConn(),
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fContext(),
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fAttnDsc(),
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fActnList(),
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fWakeupEvent(),
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fELoop(this),
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fServerThread(),
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fAttnSeen(false),
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fAttnPatt(0),
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fTraceLevel(0),
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fStats()
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{
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fContext.SetStatus(0,
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~(RlinkCommand::kStat_M_RbNak|RlinkCommand::kStat_M_RbErr));
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fELoop.AddPollHandler(boost::bind(&RlinkServer::WakeupHandler, this, _1),
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fWakeupEvent, POLLIN);
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// Statistic setup
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fStats.Define(kStatNEloopWait,"NEloopWait","event loop turns (wait)");
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fStats.Define(kStatNEloopPoll,"NEloopPoll","event loop turns (poll)");
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fStats.Define(kStatNWakeupEvt,"NWakeupEvt","Wakeup events");
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fStats.Define(kStatNRlinkEvt, "NRlinkEvt", "Rlink data events");
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fStats.Define(kStatNAttnRead, "NAttnRead", "Attn read commands");
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fStats.Define(kStatNAttn00, "NAttn00", "Attn bit 0 set");
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fStats.Define(kStatNAttn01, "NAttn01", "Attn bit 1 set");
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fStats.Define(kStatNAttn02, "NAttn02", "Attn bit 2 set");
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fStats.Define(kStatNAttn03, "NAttn03", "Attn bit 3 set");
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fStats.Define(kStatNAttn04, "NAttn04", "Attn bit 4 set");
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fStats.Define(kStatNAttn05, "NAttn05", "Attn bit 5 set");
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fStats.Define(kStatNAttn06, "NAttn06", "Attn bit 6 set");
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fStats.Define(kStatNAttn07, "NAttn07", "Attn bit 7 set");
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fStats.Define(kStatNAttn08, "NAttn08", "Attn bit 8 set");
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fStats.Define(kStatNAttn09, "NAttn09", "Attn bit 9 set");
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fStats.Define(kStatNAttn10, "NAttn10", "Attn bit 10 set");
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fStats.Define(kStatNAttn11, "NAttn11", "Attn bit 11 set");
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fStats.Define(kStatNAttn12, "NAttn12", "Attn bit 12 set");
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fStats.Define(kStatNAttn13, "NAttn13", "Attn bit 13 set");
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fStats.Define(kStatNAttn14, "NAttn14", "Attn bit 14 set");
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fStats.Define(kStatNAttn15, "NAttn15", "Attn bit 15 set");
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}
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//------------------------------------------+-----------------------------------
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//! Destructor
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RlinkServer::~RlinkServer()
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{
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Stop();
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if (fspConn) fspConn->SetServer(0);
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}
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//------------------------------------------+-----------------------------------
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//! FIXME_docs
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void RlinkServer::SetConnect(const boost::shared_ptr<RlinkConnect>& spconn)
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{
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if (!fspConn && !spconn) return; // allow 0 = 0 ...
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if (fspConn)
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throw Rexception("RlinkServer::SetConnect()",
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"Bad state: fspConn already set");
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if (!spconn)
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throw Rexception("RlinkServer::SetConnect()", "Bad args: spconn==0");
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fspConn = spconn;
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fELoop.SetLogFile(fspConn->LogFileSPtr());
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fspConn->SetServer(this);
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return;
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}
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//------------------------------------------+-----------------------------------
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//! FIXME_docs
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void RlinkServer::AddAttnHandler(const attnhdl_t& attnhdl, uint16_t mask,
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void* cdata)
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{
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if (mask == 0)
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throw Rexception("RlinkServer::AddAttnHandler()", "Bad args: mask == 0");
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boost::lock_guard<RlinkConnect> lock(*fspConn);
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AttnId id(mask, cdata);
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for (size_t i=0; i<fAttnDsc.size(); i++) {
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if (fAttnDsc[i].fId == id) {
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throw Rexception("RlinkServer::AddAttnHandler()",
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"Bad args: duplicate handler");
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}
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}
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fAttnDsc.push_back(AttnDsc(attnhdl, id));
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return;
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}
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//------------------------------------------+-----------------------------------
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//! FIXME_docs
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void RlinkServer::RemoveAttnHandler(uint16_t mask, void* cdata)
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{
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boost::lock_guard<RlinkConnect> lock(*fspConn);
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AttnId id(mask, cdata);
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for (size_t i=0; i<fAttnDsc.size(); i++) {
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if (fAttnDsc[i].fId == id) {
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fAttnDsc.erase(fAttnDsc.begin()+i);
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return;
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}
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}
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throw Rexception("RlinkServer::RemoveAttnHandler()",
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"Bad args: unknown handler");
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}
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//------------------------------------------+-----------------------------------
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//! FIXME_docs
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void RlinkServer::QueueAction(const actnhdl_t& actnhdl)
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{
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boost::lock_guard<RlinkConnect> lock(*fspConn);
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fActnList.push_back(actnhdl);
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if (IsActiveOutside()) Wakeup();
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return;
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}
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//------------------------------------------+-----------------------------------
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//! FIXME_docs
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void RlinkServer::AddPollHandler(const pollhdl_t& pollhdl,
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int fd, short events)
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{
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boost::lock_guard<RlinkConnect> lock(*fspConn);
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fELoop.AddPollHandler(pollhdl, fd, events);
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if (IsActiveOutside()) Wakeup();
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return;
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}
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//------------------------------------------+-----------------------------------
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//! FIXME_docs
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bool RlinkServer::TestPollHandler(int fd, short events)
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{
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boost::lock_guard<RlinkConnect> lock(*fspConn);
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return fELoop.TestPollHandler(fd, events);
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}
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//------------------------------------------+-----------------------------------
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//! FIXME_docs
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void RlinkServer::RemovePollHandler(int fd, short events, bool nothrow)
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{
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boost::lock_guard<RlinkConnect> lock(*fspConn);
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fELoop.RemovePollHandler(fd, events,nothrow);
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if (IsActiveOutside()) Wakeup();
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return;
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}
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//------------------------------------------+-----------------------------------
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//! FIXME_docs
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void RlinkServer::RemovePollHandler(int fd)
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{
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boost::lock_guard<RlinkConnect> lock(*fspConn);
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fELoop.RemovePollHandler(fd);
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if (IsActiveOutside()) Wakeup();
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return;
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}
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//------------------------------------------+-----------------------------------
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//! FIXME_docs
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void RlinkServer::Start()
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{
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StartOrResume(false);
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return;
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}
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//------------------------------------------+-----------------------------------
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//! FIXME_docs
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void RlinkServer::Stop()
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{
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fELoop.Stop();
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Wakeup();
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fServerThread.join();
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return;
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}
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//------------------------------------------+-----------------------------------
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//! FIXME_docs
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void RlinkServer::Resume()
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{
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StartOrResume(true);
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return;
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}
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//------------------------------------------+-----------------------------------
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//! FIXME_docs
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void RlinkServer::Wakeup()
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{
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uint64_t one(1);
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int irc = write(fWakeupEvent, &one, sizeof(one));
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if (irc < 0)
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throw Rexception("RlinkServer::Wakeup()",
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"write() to eventfd failed: ", errno);
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return;
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}
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//------------------------------------------+-----------------------------------
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//! FIXME_docs
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void RlinkServer::SignalAttn()
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{
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boost::lock_guard<RlinkConnect> lock(*fspConn);
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fAttnSeen = true;
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Wakeup();
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return;
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}
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//------------------------------------------+-----------------------------------
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//! FIXME_docs
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bool RlinkServer::IsActive() const
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{
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return fServerThread.get_id() != boost::thread::id();
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}
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//------------------------------------------+-----------------------------------
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//! FIXME_docs
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bool RlinkServer::IsActiveInside() const
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{
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return IsActive() && boost::this_thread::get_id() == fServerThread.get_id();
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}
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//------------------------------------------+-----------------------------------
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//! FIXME_docs
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bool RlinkServer::IsActiveOutside() const
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{
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return IsActive() && boost::this_thread::get_id() != fServerThread.get_id();
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}
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295 |
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//------------------------------------------+-----------------------------------
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297 |
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//! FIXME_docs
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298 |
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299 |
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void RlinkServer::SetTraceLevel(uint32_t level)
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{
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fTraceLevel = level;
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fELoop.SetTraceLevel(level);
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return;
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}
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305 |
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//------------------------------------------+-----------------------------------
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307 |
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//! FIXME_docs
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308 |
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void RlinkServer::Print(std::ostream& os) const
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310 |
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{
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311 |
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os << "RlinkServer::Print(std::ostream& os)" << endl;
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return;
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}
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314 |
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315 |
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//------------------------------------------+-----------------------------------
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316 |
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//! FIXME_docs
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317 |
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void RlinkServer::Dump(std::ostream& os, int ind, const char* text) const
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319 |
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{
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320 |
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// FIXME_code: is that thread safe ??? fActnList.size() ???
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RosFill bl(ind);
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os << bl << (text?text:"--") << "RlinkServer @ " << this << endl;
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os << bl << " fspConn: " << fspConn << endl;
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os << bl << " fAttnDsc: " << endl;
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for (size_t i=0; i<fAttnDsc.size(); i++)
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os << bl << " [" << RosPrintf(i,"d",3) << "]: "
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<< RosPrintBvi(fAttnDsc[i].fId.fMask,16)
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329 |
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<< ", " << fAttnDsc[i].fId.fCdata << endl;
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330 |
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os << bl << " fActnList.size: " << fActnList.size() << endl;
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fELoop.Dump(os, ind+2, "fELoop");
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332 |
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os << bl << " fServerThread: " << fServerThread.get_id() << endl;
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333 |
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os << bl << " fAttnSeen: " << fAttnSeen << endl;
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334 |
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os << bl << " fAttnPatt: " << RosPrintBvi(fAttnPatt,16) << endl;
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335 |
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fStats.Dump(os, ind+2, "fStats: ");
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336 |
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return;
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337 |
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}
|
338 |
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339 |
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//------------------------------------------+-----------------------------------
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340 |
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//! FIXME_docs
|
341 |
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|
342 |
20 |
wfjm |
void RlinkServer::StartOrResume(bool resume)
|
343 |
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{
|
344 |
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if (IsActive())
|
345 |
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throw Rexception("RlinkServer::StartOrResume()",
|
346 |
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"Bad state: server thread already running");
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347 |
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if (!fspConn->IsOpen())
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348 |
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throw Rexception("RlinkServer::StartOrResume()",
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349 |
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"Bad state: RlinkConnect not open");
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350 |
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351 |
|
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boost::lock_guard<RlinkConnect> lock(Connect());
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352 |
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// enable attn comma send
|
353 |
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RlinkCommandList clist;
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354 |
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if (!resume) clist.AddAttn();
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355 |
|
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clist.AddInit(RlinkCommand::kRbaddr_IInt, RlinkCommand::kIInt_M_AnEna);
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356 |
|
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Exec(clist);
|
357 |
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358 |
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// setup poll handler for Rlink traffic
|
359 |
|
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int rlinkfd = fspConn->Port()->FdRead();
|
360 |
|
|
if (!fELoop.TestPollHandler(rlinkfd, POLLIN))
|
361 |
|
|
fELoop.AddPollHandler(boost::bind(&RlinkServer::RlinkHandler, this, _1),
|
362 |
|
|
rlinkfd, POLLIN);
|
363 |
|
|
|
364 |
|
|
// and start server thread
|
365 |
|
|
fServerThread = boost::thread(boost::bind(&RlinkServerEventLoop::EventLoop,
|
366 |
|
|
&fELoop));
|
367 |
|
|
|
368 |
|
|
if (resume) {
|
369 |
|
|
RerrMsg emsg;
|
370 |
|
|
if (!Connect().SndAttn(emsg)) {
|
371 |
|
|
RlogMsg lmsg(LogFile(), 'E');
|
372 |
|
|
lmsg << "attn send for server resume failed:" << emsg;
|
373 |
|
|
}
|
374 |
|
|
}
|
375 |
|
|
|
376 |
|
|
return;
|
377 |
|
|
}
|
378 |
|
|
|
379 |
|
|
//------------------------------------------+-----------------------------------
|
380 |
|
|
//! FIXME_docs
|
381 |
|
|
|
382 |
19 |
wfjm |
void RlinkServer::CallAttnHandler()
|
383 |
|
|
{
|
384 |
|
|
if (fAttnSeen) {
|
385 |
|
|
boost::lock_guard<RlinkConnect> lock(*fspConn);
|
386 |
|
|
RlinkCommandList clist;
|
387 |
|
|
clist.AddAttn();
|
388 |
|
|
fStats.Inc(kStatNAttnRead);
|
389 |
|
|
Exec(clist);
|
390 |
|
|
// FIXME_code: handle errors: bool ok =
|
391 |
|
|
uint16_t nattn = clist[0].Data();
|
392 |
|
|
fAttnPatt |= nattn;
|
393 |
|
|
for (size_t i=0; i<16; i++) {
|
394 |
|
|
if (nattn & (uint16_t(1)<<i)) fStats.Inc(kStatNAttn00+i);
|
395 |
|
|
}
|
396 |
|
|
fAttnSeen = false;
|
397 |
|
|
}
|
398 |
|
|
|
399 |
|
|
// multiple handlers may be called for one attn bit
|
400 |
|
|
uint16_t hdone = 0;
|
401 |
|
|
for (size_t i=0; i<fAttnDsc.size(); i++) {
|
402 |
|
|
uint16_t hmatch = fAttnPatt & fAttnDsc[i].fId.fMask;
|
403 |
|
|
if (hmatch) {
|
404 |
|
|
AttnArgs args(fAttnPatt, fAttnDsc[i].fId.fMask);
|
405 |
|
|
// FIXME_code: return code not used, yet
|
406 |
|
|
boost::lock_guard<RlinkConnect> lock(*fspConn);
|
407 |
|
|
fAttnDsc[i].fHandler(args);
|
408 |
|
|
hdone |= hmatch;
|
409 |
|
|
}
|
410 |
|
|
}
|
411 |
|
|
fAttnPatt &= ~hdone; // clear handled bits
|
412 |
|
|
|
413 |
|
|
if (fAttnPatt && fTraceLevel>0) {
|
414 |
|
|
RlogMsg lmsg(LogFile(), 'I');
|
415 |
|
|
lmsg << "eloop: unhandled attn, mask="
|
416 |
|
|
<< RosPrintBvi(fAttnPatt,16) << endl;
|
417 |
|
|
}
|
418 |
|
|
|
419 |
|
|
fAttnPatt = 0;
|
420 |
|
|
|
421 |
|
|
return;
|
422 |
|
|
}
|
423 |
|
|
|
424 |
|
|
//------------------------------------------+-----------------------------------
|
425 |
|
|
//! FIXME_docs
|
426 |
|
|
|
427 |
|
|
void RlinkServer::CallActnHandler()
|
428 |
|
|
{
|
429 |
|
|
if (!ActnPending()) return;
|
430 |
|
|
|
431 |
|
|
// call first action
|
432 |
|
|
boost::lock_guard<RlinkConnect> lock(*fspConn);
|
433 |
|
|
|
434 |
|
|
int irc = fActnList.front()();
|
435 |
|
|
|
436 |
20 |
wfjm |
// if irc>0 requeue to end, otherwise drop
|
437 |
|
|
if (irc > 0) {
|
438 |
19 |
wfjm |
fActnList.splice(fActnList.end(), fActnList, fActnList.begin());
|
439 |
|
|
} else {
|
440 |
|
|
fActnList.pop_front();
|
441 |
|
|
}
|
442 |
|
|
|
443 |
|
|
return;
|
444 |
|
|
}
|
445 |
|
|
|
446 |
|
|
//------------------------------------------+-----------------------------------
|
447 |
|
|
//! FIXME_docs
|
448 |
|
|
|
449 |
|
|
int RlinkServer::WakeupHandler(const pollfd& pfd)
|
450 |
|
|
{
|
451 |
|
|
fStats.Inc(kStatNWakeupEvt);
|
452 |
|
|
|
453 |
|
|
// bail-out and cancel handler if poll returns an error event
|
454 |
|
|
if (pfd.revents & (~pfd.events)) return -1;
|
455 |
|
|
|
456 |
|
|
uint64_t buf;
|
457 |
|
|
int irc = read(fWakeupEvent, &buf, sizeof(buf));
|
458 |
|
|
if (irc < 0)
|
459 |
|
|
throw Rexception("RlinkServer::WakeupHandler()",
|
460 |
|
|
"read() from eventfd failed: ", errno);
|
461 |
|
|
return 0;
|
462 |
|
|
}
|
463 |
|
|
|
464 |
|
|
//------------------------------------------+-----------------------------------
|
465 |
|
|
//! FIXME_docs
|
466 |
|
|
|
467 |
|
|
int RlinkServer::RlinkHandler(const pollfd& pfd)
|
468 |
|
|
{
|
469 |
|
|
fStats.Inc(kStatNRlinkEvt);
|
470 |
|
|
|
471 |
|
|
// bail-out and cancel handler if poll returns an error event
|
472 |
|
|
if (pfd.revents & (~pfd.events)) return -1;
|
473 |
|
|
|
474 |
|
|
boost::lock_guard<RlinkConnect> lock(*fspConn);
|
475 |
|
|
RerrMsg emsg;
|
476 |
|
|
int irc = fspConn->PollAttn(emsg);
|
477 |
|
|
if (irc > 0) {
|
478 |
|
|
fAttnSeen = true;
|
479 |
|
|
}
|
480 |
|
|
|
481 |
|
|
return 0;
|
482 |
|
|
}
|
483 |
|
|
|
484 |
|
|
} // end namespace Retro
|