author | Mathieu Lacage <mathieu.lacage@sophia.inria.fr> |
Mon, 11 Aug 2008 10:40:31 -0700 | |
changeset 3525 | 4b8ef7da0ac3 |
parent 2989 | b7eb3929096c |
child 4198 | 7e0ff1be867a |
permissions | -rw-r--r-- |
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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */ |
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/* |
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* Copyright (c) 2007 University of Washington |
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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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#include "ns3/log.h" |
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#include "ns3/uinteger.h" |
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#include "drop-tail-queue.h" |
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NS_LOG_COMPONENT_DEFINE ("DropTailQueue"); |
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|
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namespace ns3 { |
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|
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NS_OBJECT_ENSURE_REGISTERED (DropTailQueue); |
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|
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TypeId DropTailQueue::GetTypeId (void) |
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{ |
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static TypeId tid = TypeId ("ns3::DropTailQueue") |
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.SetParent<Queue> () |
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.AddConstructor<DropTailQueue> () |
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.AddAttribute ("MaxPackets", "The maximum number of packets accepted by this DropTailQueue.", |
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UintegerValue (100), |
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MakeUintegerAccessor (&DropTailQueue::m_maxPackets), |
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MakeUintegerChecker<uint32_t> ()) |
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; |
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|
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return tid; |
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} |
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DropTailQueue::DropTailQueue () : |
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Queue (), |
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m_packets () |
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{ |
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NS_LOG_FUNCTION_NOARGS (); |
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} |
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|
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DropTailQueue::~DropTailQueue () |
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{ |
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NS_LOG_FUNCTION_NOARGS (); |
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} |
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bool |
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DropTailQueue::DoEnqueue (Ptr<Packet> p) |
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{ |
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NS_LOG_FUNCTION (this << p); |
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if (m_packets.size () >= m_maxPackets) |
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{ |
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NS_LOG_LOGIC ("Queue full -- droppping pkt"); |
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Drop (p); |
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return false; |
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} |
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|
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m_packets.push(p); |
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return true; |
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} |
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Ptr<Packet> |
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DropTailQueue::DoDequeue (void) |
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{ |
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NS_LOG_FUNCTION (this); |
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|
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if (m_packets.empty()) |
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{ |
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NS_LOG_LOGIC ("Queue empty"); |
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return false; |
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} |
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|
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Ptr<Packet> p = m_packets.front (); |
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m_packets.pop (); |
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NS_LOG_LOGIC ("Popped " << p); |
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return p; |
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} |
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Ptr<const Packet> |
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DropTailQueue::DoPeek (void) const |
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{ |
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NS_LOG_FUNCTION (this); |
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if (m_packets.empty()) |
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{ |
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NS_LOG_LOGIC ("Queue empty"); |
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return false; |
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} |
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Ptr<Packet> p = m_packets.front (); |
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return p; |
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} |
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} // namespace ns3 |
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#ifdef RUN_SELF_TESTS |
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#include "ns3/test.h" |
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113 |
namespace ns3 { |
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class DropTailQueueTest: public Test { |
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public: |
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virtual bool RunTests (void); |
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DropTailQueueTest (); |
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}; |
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DropTailQueueTest::DropTailQueueTest () |
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: Test ("DropTailQueue") {} |
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bool |
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DropTailQueueTest::RunTests (void) |
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{ |
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bool result = true; |
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Ptr<DropTailQueue> queue = CreateObject<DropTailQueue> (); |
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NS_TEST_ASSERT (queue->SetAttributeFailSafe ("MaxPackets", UintegerValue (3))); |
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Ptr<Packet> p1, p2, p3, p4; |
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p1 = Create<Packet> (); |
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p2 = Create<Packet> (); |
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p3 = Create<Packet> (); |
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p4 = Create<Packet> (); |
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NS_TEST_ASSERT_EQUAL (queue->GetNPackets (), 0); |
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queue->Enqueue (p1); |
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NS_TEST_ASSERT_EQUAL (queue->GetNPackets (), 1); |
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queue->Enqueue (p2); |
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NS_TEST_ASSERT_EQUAL (queue->GetNPackets (), 2); |
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queue->Enqueue (p3); |
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NS_TEST_ASSERT_EQUAL (queue->GetNPackets (), 3); |
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queue->Enqueue (p4); // will be dropped |
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NS_TEST_ASSERT_EQUAL (queue->GetNPackets (), 3); |
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Ptr<Packet> p; |
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p = queue->Dequeue (); |
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NS_TEST_ASSERT (p != 0); |
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NS_TEST_ASSERT_EQUAL (queue->GetNPackets (), 2); |
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NS_TEST_ASSERT_EQUAL (p->GetUid (), p1->GetUid ()); |
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p = queue->Dequeue (); |
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NS_TEST_ASSERT (p != 0); |
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NS_TEST_ASSERT_EQUAL (queue->GetNPackets (), 1); |
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NS_TEST_ASSERT_EQUAL (p->GetUid (), p2->GetUid ()); |
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p = queue->Dequeue (); |
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NS_TEST_ASSERT (p != 0); |
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NS_TEST_ASSERT_EQUAL (queue->GetNPackets (), 0); |
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NS_TEST_ASSERT_EQUAL (p->GetUid (), p3->GetUid ()); |
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p = queue->Dequeue (); |
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NS_TEST_ASSERT (p == 0); |
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return result; |
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} |
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static DropTailQueueTest gDropTailQueueTest; |
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queues, trace-writer, debug
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}; // namespace ns3 |
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#endif /* RUN_SELF_TESTS */ |
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