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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 "Global.hh"
#include "Consumer.hh"
#include "NodeID.hh"
#include "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
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