187 lines
4.3 KiB
C++
187 lines
4.3 KiB
C++
/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
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/*
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* Copyright (c) 2020 Universita' degli Studi di Napoli Federico II
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation;
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* Author: Stefano Avallone <stavallo@unina.it>
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*/
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#include "ns3/log.h"
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#include "wifi-tx-timer.h"
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#include "wifi-mpdu.h"
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#include "wifi-tx-vector.h"
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#include "wifi-psdu.h"
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namespace ns3 {
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NS_LOG_COMPONENT_DEFINE ("WifiTxTimer");
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WifiTxTimer::WifiTxTimer ()
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: m_timeoutEvent (),
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m_reason (NOT_RUNNING),
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m_impl (nullptr),
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m_end (Seconds (0))
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{
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}
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WifiTxTimer::~WifiTxTimer ()
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{
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m_timeoutEvent.Cancel ();
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m_impl = 0;
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}
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void
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WifiTxTimer::Reschedule (const Time& delay)
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{
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NS_LOG_FUNCTION (this << delay);
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if (m_timeoutEvent.IsRunning ())
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{
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NS_LOG_DEBUG ("Rescheduling " << GetReasonString (m_reason) << " timeout in "
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<< delay.As (Time::US));
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Time end = Simulator::Now () + delay;
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// If timer expiration is postponed, we have to do nothing but updating
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// the timer expiration, because Expire() will reschedule itself to be
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// executed at the correct time. If timer expiration is moved up, we
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// have to reschedule Expire() (which would be executed too late otherwise)
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if (end < m_end)
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{
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// timer expiration is moved up
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m_timeoutEvent.Cancel ();
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m_timeoutEvent = Simulator::Schedule (delay, &WifiTxTimer::Expire, this);
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}
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m_end = end;
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}
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}
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void
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WifiTxTimer::Expire (void)
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{
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NS_LOG_FUNCTION (this);
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Time now = Simulator::Now ();
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if (m_end == now)
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{
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m_impl->Invoke ();
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}
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else
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{
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m_timeoutEvent = Simulator::Schedule (m_end - now, &WifiTxTimer::Expire, this);
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}
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}
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WifiTxTimer::Reason
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WifiTxTimer::GetReason (void) const
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{
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NS_ASSERT (IsRunning ());
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return m_reason;
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}
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std::string
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WifiTxTimer::GetReasonString (Reason reason) const
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{
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#define FOO(x) \
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case WAIT_ ## x: \
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return # x; \
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break;
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switch (reason)
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{
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case NOT_RUNNING:
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return "NOT_RUNNING";
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break;
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FOO (CTS);
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FOO (NORMAL_ACK);
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FOO (BLOCK_ACK);
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FOO (NORMAL_ACK_AFTER_DL_MU_PPDU);
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FOO (BLOCK_ACKS_IN_TB_PPDU);
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FOO (TB_PPDU_AFTER_BASIC_TF);
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FOO (QOS_NULL_AFTER_BSRP_TF);
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FOO (BLOCK_ACK_AFTER_TB_PPDU);
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default:
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NS_ABORT_MSG ("Unknown reason");
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}
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#undef FOO
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}
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bool
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WifiTxTimer::IsRunning (void) const
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{
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return m_timeoutEvent.IsRunning ();
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}
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void
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WifiTxTimer::Cancel (void)
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{
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NS_LOG_FUNCTION (this << GetReasonString (m_reason));
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m_timeoutEvent.Cancel ();
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m_impl = 0;
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}
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Time
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WifiTxTimer::GetDelayLeft (void) const
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{
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return Simulator::GetDelayLeft (m_timeoutEvent);
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}
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void
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WifiTxTimer::SetMpduResponseTimeoutCallback (MpduResponseTimeout callback) const
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{
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m_mpduResponseTimeoutCallback = callback;
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}
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void
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WifiTxTimer::FeedTraceSource (Ptr<WifiMpdu> item, WifiTxVector txVector)
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{
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if (!m_mpduResponseTimeoutCallback.IsNull ())
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{
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m_mpduResponseTimeoutCallback (m_reason, item, txVector);
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}
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}
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void
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WifiTxTimer::SetPsduResponseTimeoutCallback (PsduResponseTimeout callback) const
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{
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m_psduResponseTimeoutCallback = callback;
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}
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void
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WifiTxTimer::FeedTraceSource (Ptr<WifiPsdu> psdu, WifiTxVector txVector)
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{
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if (!m_psduResponseTimeoutCallback.IsNull ())
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{
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m_psduResponseTimeoutCallback (m_reason, psdu, txVector);
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}
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}
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void
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WifiTxTimer::SetPsduMapResponseTimeoutCallback (PsduMapResponseTimeout callback) const
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{
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m_psduMapResponseTimeoutCallback = callback;
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}
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void
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WifiTxTimer::FeedTraceSource (WifiPsduMap* psduMap, std::set<Mac48Address>* missingStations,
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std::size_t nTotalStations)
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{
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if (!m_psduMapResponseTimeoutCallback.IsNull ())
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{
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m_psduMapResponseTimeoutCallback (m_reason, psduMap, missingStations, nTotalStations);
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}
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}
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} //namespace ns3
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