119 lines
3.7 KiB
C++
119 lines
3.7 KiB
C++
|
|
||
|
/*
|
||
|
* Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
|
||
|
* All rights reserved.
|
||
|
*
|
||
|
* Redistribution and use in source and binary forms, with or without
|
||
|
* modification, are permitted provided that the following conditions are
|
||
|
* met: redistributions of source code must retain the above copyright
|
||
|
* notice, this list of conditions and the following disclaimer;
|
||
|
* redistributions in binary form must reproduce the above copyright
|
||
|
* notice, this list of conditions and the following disclaimer in the
|
||
|
* documentation and/or other materials provided with the distribution;
|
||
|
* neither the name of the copyright holders nor the names of its
|
||
|
* contributors may be used to endorse or promote products derived from
|
||
|
* this software without specific prior written permission.
|
||
|
*
|
||
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
||
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||
|
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||
|
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||
|
*/
|
||
|
|
||
|
/*
|
||
|
* $Id$
|
||
|
*
|
||
|
* Description: Perfect switch, of course it is perfect and no latency or what
|
||
|
* so ever. Every cycle it is woke up and perform all the
|
||
|
* necessary routings that must be done. Note, this switch also
|
||
|
* has number of input ports/output ports and has a routing table
|
||
|
* as well.
|
||
|
*
|
||
|
*/
|
||
|
|
||
|
#ifndef PerfectSwitch_H
|
||
|
#define PerfectSwitch_H
|
||
|
|
||
|
#include "Global.hh"
|
||
|
#include "Vector.hh"
|
||
|
#include "Consumer.hh"
|
||
|
#include "NodeID.hh"
|
||
|
|
||
|
class MessageBuffer;
|
||
|
class NetDest;
|
||
|
class SimpleNetwork;
|
||
|
|
||
|
class LinkOrder {
|
||
|
public:
|
||
|
int m_link;
|
||
|
int m_value;
|
||
|
};
|
||
|
|
||
|
class PerfectSwitch : public Consumer {
|
||
|
public:
|
||
|
// Constructors
|
||
|
|
||
|
// constructor specifying the number of ports
|
||
|
PerfectSwitch(SwitchID sid, SimpleNetwork* network_ptr);
|
||
|
void addInPort(const Vector<MessageBuffer*>& in);
|
||
|
void addOutPort(const Vector<MessageBuffer*>& out, const NetDest& routing_table_entry);
|
||
|
void clearRoutingTables();
|
||
|
void clearBuffers();
|
||
|
void reconfigureOutPort(const NetDest& routing_table_entry);
|
||
|
int getInLinks() const { return m_in.size(); }
|
||
|
int getOutLinks() const { return m_out.size(); }
|
||
|
|
||
|
// Destructor
|
||
|
~PerfectSwitch();
|
||
|
|
||
|
// Public Methods
|
||
|
void wakeup();
|
||
|
|
||
|
void printStats(ostream& out) const;
|
||
|
void clearStats();
|
||
|
void printConfig(ostream& out) const;
|
||
|
|
||
|
void print(ostream& out) const;
|
||
|
private:
|
||
|
|
||
|
// Private copy constructor and assignment operator
|
||
|
PerfectSwitch(const PerfectSwitch& obj);
|
||
|
PerfectSwitch& operator=(const PerfectSwitch& obj);
|
||
|
|
||
|
// Data Members (m_ prefix)
|
||
|
SwitchID m_switch_id;
|
||
|
|
||
|
// vector of queues from the components
|
||
|
Vector<Vector<MessageBuffer*> > m_in;
|
||
|
Vector<Vector<MessageBuffer*> > m_out;
|
||
|
Vector<NetDest> m_routing_table;
|
||
|
Vector<LinkOrder> m_link_order;
|
||
|
int m_virtual_networks;
|
||
|
int m_round_robin_start;
|
||
|
int m_wakeups_wo_switch;
|
||
|
SimpleNetwork* m_network_ptr;
|
||
|
};
|
||
|
|
||
|
// Output operator declaration
|
||
|
ostream& operator<<(ostream& out, const PerfectSwitch& obj);
|
||
|
|
||
|
// ******************* Definitions *******************
|
||
|
|
||
|
// Output operator definition
|
||
|
extern inline
|
||
|
ostream& operator<<(ostream& out, const PerfectSwitch& obj)
|
||
|
{
|
||
|
obj.print(out);
|
||
|
out << flush;
|
||
|
return out;
|
||
|
}
|
||
|
|
||
|
#endif //PerfectSwitch_H
|