PerfectSwitch.hh revision 7002
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 <iostream> 45 46#include "mem/ruby/common/Global.hh" 47#include "mem/gems_common/Vector.hh" 48#include "mem/ruby/common/Consumer.hh" 49#include "mem/ruby/system/NodeID.hh" 50 51class MessageBuffer; 52class NetDest; 53class SimpleNetwork; 54 55class LinkOrder { 56public: 57 int m_link; 58 int m_value; 59}; 60 61class PerfectSwitch : public Consumer { 62public: 63 // Constructors 64 65 // constructor specifying the number of ports 66 PerfectSwitch(SwitchID sid, SimpleNetwork* network_ptr); 67 void addInPort(const Vector<MessageBuffer*>& in); 68 void addOutPort(const Vector<MessageBuffer*>& out, const NetDest& routing_table_entry); 69 void clearRoutingTables(); 70 void clearBuffers(); 71 void reconfigureOutPort(const NetDest& routing_table_entry); 72 int getInLinks() const { return m_in.size(); } 73 int getOutLinks() const { return m_out.size(); } 74 75 // Destructor 76 ~PerfectSwitch(); 77 78 // Public Methods 79 void wakeup(); 80 81 void printStats(std::ostream& out) const; 82 void clearStats(); 83 void printConfig(std::ostream& out) const; 84 85 void print(std::ostream& out) const; 86private: 87 88 // Private copy constructor and assignment operator 89 PerfectSwitch(const PerfectSwitch& obj); 90 PerfectSwitch& operator=(const PerfectSwitch& obj); 91 92 // Data Members (m_ prefix) 93 SwitchID m_switch_id; 94 95 // vector of queues from the components 96 Vector<Vector<MessageBuffer*> > m_in; 97 Vector<Vector<MessageBuffer*> > m_out; 98 Vector<NetDest> m_routing_table; 99 Vector<LinkOrder> m_link_order; 100 int m_virtual_networks; 101 int m_round_robin_start; 102 int m_wakeups_wo_switch; 103 SimpleNetwork* m_network_ptr; 104}; 105 106// Output operator declaration 107std::ostream& operator<<(std::ostream& out, const PerfectSwitch& obj); 108 109// ******************* Definitions ******************* 110 111// Output operator definition 112extern inline 113std::ostream& operator<<(std::ostream& out, const PerfectSwitch& obj) 114{ 115 obj.print(out); 116 out << std::flush; 117 return out; 118} 119 120#endif //PerfectSwitch_H 121