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-
-/*
- * 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:
- *
- */
-
-#ifndef BARRIERGENERATOR_H
-#define BARRIERGENERATOR_H
-
-#include "mem/ruby/common/Global.hh"
-#include "mem/ruby/common/Consumer.hh"
-#include "mem/ruby/system/NodeID.hh"
-#include "mem/ruby/common/Address.hh"
-
-class Sequencer;
-class SubBlock;
-class SyntheticDriver;
-
-
-enum BarrierGeneratorStatus {
- BarrierGeneratorStatus_FIRST,
- BarrierGeneratorStatus_Thinking = BarrierGeneratorStatus_FIRST,
- BarrierGeneratorStatus_Test_Pending,
- BarrierGeneratorStatus_Test_Waiting,
- BarrierGeneratorStatus_Before_Swap,
- BarrierGeneratorStatus_Swap_Pending,
- BarrierGeneratorStatus_Holding,
- BarrierGeneratorStatus_Release_Pending,
- BarrierGeneratorStatus_Release_Waiting,
- BarrierGeneratorStatus_StoreFlag_Waiting,
- BarrierGeneratorStatus_StoreFlag_Pending,
- BarrierGeneratorStatus_Done,
- BarrierGeneratorStatus_SpinFlag_Ready,
- BarrierGeneratorStatus_SpinFlag_Pending,
- BarrierGeneratorStatus_LoadBarrierCounter_Pending,
- BarrierGeneratorStatus_StoreBarrierCounter_Pending,
- BarrierGeneratorStatus_StoreBarrierCounter_Waiting,
- BarrierGeneratorStatus_NUM
-};
-
-
-// UNCOMMENT THIS FOR A SINGLE WORK QUEUE
-// static int m_counter;
-
-class BarrierGenerator : public Consumer {
-public:
- // Constructors
- BarrierGenerator(NodeID node, SyntheticDriver& driver);
-
- // Destructor
- ~BarrierGenerator();
-
- // Public Methods
- void wakeup();
- void performCallback(NodeID proc, SubBlock& data);
-
- void print(ostream& out) const;
-private:
- // Private Methods
- int thinkTime() ;
- int waitTime() const;
- void initiateTest();
- void initiateSwap();
- void initiateRelease();
- void initiateLoadCtr();
- void initiateStoreCtr();
- void initiateLoadFlag();
- void initiateStoreFlag();
- Sequencer* sequencer() const;
-
- // Private copy constructor and assignment operator
- BarrierGenerator(const BarrierGenerator& obj);
- BarrierGenerator& operator=(const BarrierGenerator& obj);
-
- // Data Members (m_ prefix)
- SyntheticDriver& m_driver;
- NodeID m_node;
- BarrierGeneratorStatus m_status;
- int proc_counter;
-
- int m_counter;
-
- bool m_local_sense;
- bool m_barrier_done;
-
- Time m_last_transition;
- Address m_address;
-
- int m_total_think;
- int m_think_periods;
-};
-
-// Output operator declaration
-ostream& operator<<(ostream& out, const BarrierGenerator& obj);
-
-// ******************* Definitions *******************
-
-// Output operator definition
-extern inline
-ostream& operator<<(ostream& out, const BarrierGenerator& obj)
-{
- obj.print(out);
- out << flush;
- return out;
-}
-
-#endif //REQUESTGENERATOR_H
-