PerfectSwitch.hh revision 6145:15cca6ab723a
1 2/* 3 * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions are 8 * met: redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer; 10 * redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution; 13 * neither the name of the copyright holders nor the names of its 14 * contributors may be used to endorse or promote products derived from 15 * this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 20 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 21 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 22 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 23 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30/* 31 * $Id$ 32 * 33 * Description: Perfect switch, of course it is perfect and no latency or what 34 * so ever. Every cycle it is woke up and perform all the 35 * necessary routings that must be done. Note, this switch also 36 * has number of input ports/output ports and has a routing table 37 * as well. 38 * 39 */ 40 41#ifndef PerfectSwitch_H 42#define PerfectSwitch_H 43 44#include "Global.hh" 45#include "Vector.hh" 46#include "Consumer.hh" 47#include "NodeID.hh" 48 49class MessageBuffer; 50class NetDest; 51class SimpleNetwork; 52 53class LinkOrder { 54public: 55 int m_link; 56 int m_value; 57}; 58 59class PerfectSwitch : public Consumer { 60public: 61 // Constructors 62 63 // constructor specifying the number of ports 64 PerfectSwitch(SwitchID sid, SimpleNetwork* network_ptr); 65 void addInPort(const Vector<MessageBuffer*>& in); 66 void addOutPort(const Vector<MessageBuffer*>& out, const NetDest& routing_table_entry); 67 void clearRoutingTables(); 68 void clearBuffers(); 69 void reconfigureOutPort(const NetDest& routing_table_entry); 70 int getInLinks() const { return m_in.size(); } 71 int getOutLinks() const { return m_out.size(); } 72 73 // Destructor 74 ~PerfectSwitch(); 75 76 // Public Methods 77 void wakeup(); 78 79 void printStats(ostream& out) const; 80 void clearStats(); 81 void printConfig(ostream& out) const; 82 83 void print(ostream& out) const; 84private: 85 86 // Private copy constructor and assignment operator 87 PerfectSwitch(const PerfectSwitch& obj); 88 PerfectSwitch& operator=(const PerfectSwitch& obj); 89 90 // Data Members (m_ prefix) 91 SwitchID m_switch_id; 92 93 // vector of queues from the components 94 Vector<Vector<MessageBuffer*> > m_in; 95 Vector<Vector<MessageBuffer*> > m_out; 96 Vector<NetDest> m_routing_table; 97 Vector<LinkOrder> m_link_order; 98 int m_virtual_networks; 99 int m_round_robin_start; 100 int m_wakeups_wo_switch; 101 SimpleNetwork* m_network_ptr; 102}; 103 104// Output operator declaration 105ostream& operator<<(ostream& out, const PerfectSwitch& obj); 106 107// ******************* Definitions ******************* 108 109// Output operator definition 110extern inline 111ostream& operator<<(ostream& out, const PerfectSwitch& obj) 112{ 113 obj.print(out); 114 out << flush; 115 return out; 116} 117 118#endif //PerfectSwitch_H 119