2009-05-11 19:38:43 +02:00
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/*
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* Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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2010-04-01 01:56:45 +02:00
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* The class to implement bandwidth and latency throttle. An instance
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* of consumer class that can be woke up. It is only used to control
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* bandwidth at output port of a switch. And the throttle is added
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* *after* the output port, means the message is put in the output
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* port of the PerfectSwitch (a intermediateBuffers) first, then go
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* through the Throttle.
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2009-05-11 19:38:43 +02:00
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*/
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2010-04-01 01:56:45 +02:00
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#ifndef __MEM_RUBY_NETWORK_SIMPLE_THROTTLE_HH__
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#define __MEM_RUBY_NETWORK_SIMPLE_THROTTLE_HH__
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2009-05-11 19:38:43 +02:00
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2010-04-02 20:20:32 +02:00
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#include <iostream>
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2011-02-23 06:58:40 +01:00
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#include <string>
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2011-04-15 19:44:06 +02:00
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#include <vector>
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2010-04-02 20:20:32 +02:00
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2009-05-11 19:38:45 +02:00
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#include "mem/ruby/common/Consumer.hh"
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2010-04-01 01:56:45 +02:00
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#include "mem/ruby/network/Network.hh"
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2009-07-07 00:49:47 +02:00
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#include "mem/ruby/system/System.hh"
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2009-05-11 19:38:43 +02:00
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class MessageBuffer;
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2015-08-15 02:28:44 +02:00
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class Switch;
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2009-05-11 19:38:43 +02:00
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2010-04-01 01:56:45 +02:00
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class Throttle : public Consumer
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{
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public:
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2015-07-10 23:05:23 +02:00
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Throttle(int sID, RubySystem *rs, NodeID node, Cycles link_latency,
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int link_bandwidth_multiplier, int endpoint_bandwidth,
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2015-08-15 02:28:44 +02:00
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Switch *em);
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2010-04-01 01:56:45 +02:00
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~Throttle() {}
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2011-02-23 06:58:40 +01:00
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std::string name()
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2015-08-15 02:28:44 +02:00
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{ return csprintf("Throttle-%i", m_switch_id); }
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2011-02-23 06:58:40 +01:00
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2014-09-15 23:19:38 +02:00
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void addLinks(const std::vector<MessageBuffer*>& in_vec,
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const std::vector<MessageBuffer*>& out_vec);
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2010-04-01 01:56:45 +02:00
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void wakeup();
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2013-09-06 23:21:35 +02:00
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// The average utilization (a fraction) since last clearStats()
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const Stats::Scalar & getUtilization() const
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{ return m_link_utilization; }
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const Stats::Vector & getMsgCount(unsigned int type) const
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{ return m_msg_counts[type]; }
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2013-02-11 04:26:24 +01:00
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int getLinkBandwidth() const
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{ return m_endpoint_bandwidth * m_link_bandwidth_multiplier; }
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2010-04-01 01:56:45 +02:00
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2013-02-11 04:26:24 +01:00
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Cycles getLatency() const { return m_link_latency; }
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2010-04-01 01:56:45 +02:00
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2013-09-06 23:21:35 +02:00
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void clearStats();
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void collateStats();
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void regStats(std::string name);
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2010-04-02 20:20:32 +02:00
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void print(std::ostream& out) const;
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2010-04-01 01:56:45 +02:00
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private:
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void init(NodeID node, Cycles link_latency, int link_bandwidth_multiplier,
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2011-04-29 02:18:14 +02:00
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int endpoint_bandwidth);
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2014-09-01 23:55:47 +02:00
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void operateVnet(int vnet, int &bw_remainin, bool &schedule_wakeup,
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MessageBuffer *in, MessageBuffer *out);
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2010-04-01 01:56:45 +02:00
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// Private copy constructor and assignment operator
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Throttle(const Throttle& obj);
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Throttle& operator=(const Throttle& obj);
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2014-09-15 23:19:38 +02:00
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std::vector<MessageBuffer*> m_in;
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std::vector<MessageBuffer*> m_out;
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unsigned int m_vnets;
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std::vector<int> m_units_remaining;
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2014-09-01 23:55:47 +02:00
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2015-08-15 02:28:44 +02:00
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const int m_switch_id;
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Switch *m_switch;
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2010-04-01 01:56:45 +02:00
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NodeID m_node;
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2015-08-15 02:28:44 +02:00
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2010-04-01 01:56:45 +02:00
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int m_link_bandwidth_multiplier;
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2013-02-11 04:26:24 +01:00
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Cycles m_link_latency;
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2010-04-01 01:56:45 +02:00
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int m_wakeups_wo_switch;
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2011-04-29 02:18:14 +02:00
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int m_endpoint_bandwidth;
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2015-07-10 23:05:23 +02:00
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RubySystem *m_ruby_system;
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2010-04-01 01:56:45 +02:00
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2013-09-06 23:21:35 +02:00
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// Statistical variables
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Stats::Scalar m_link_utilization;
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2013-09-11 22:33:27 +02:00
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Stats::Vector m_msg_counts[MessageSizeType_NUM];
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Stats::Formula m_msg_bytes[MessageSizeType_NUM];
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2013-09-06 23:21:35 +02:00
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double m_link_utilization_proxy;
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2009-05-11 19:38:43 +02:00
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};
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2010-04-02 20:20:32 +02:00
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inline std::ostream&
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operator<<(std::ostream& out, const Throttle& obj)
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2009-05-11 19:38:43 +02:00
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{
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2010-04-01 01:56:45 +02:00
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obj.print(out);
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2010-04-02 20:20:32 +02:00
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out << std::flush;
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2010-04-01 01:56:45 +02:00
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return out;
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2009-05-11 19:38:43 +02:00
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}
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2010-04-01 01:56:45 +02:00
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#endif // __MEM_RUBY_NETWORK_SIMPLE_THROTTLE_HH__
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