flitBuffer.cc

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/*
 * Copyright (c) 2020 Advanced Micro Devices, Inc.
 * Copyright (c) 2008 Princeton University
 * Copyright (c) 2016 Georgia Institute of Technology
 * 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
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#include "mem/ruby/network/garnet/flitBuffer.hh"
 
namespace gem5
{
 
namespace ruby
{
 
namespace garnet
{
 
flitBuffer::flitBuffer()
{
    max_size = INFINITE_;
}
 
flitBuffer::flitBuffer(int maximum_size)
{
    max_size = maximum_size;
}
 
bool
flitBuffer::isEmpty()
{
    return (m_buffer.size() == 0);
}
 
bool
flitBuffer::isReady(Tick curTime)
{
    if (m_buffer.size() != 0 ) {
        flit *t_flit = peekTopFlit();
        if (t_flit->get_time() <= curTime)
            return true;
    }
    return false;
}
 
void
flitBuffer::print(std::ostream& out) const
{
    out << "[flitBuffer: " << m_buffer.size() << "] " << std::endl;
}
 
bool
flitBuffer::isFull()
{
    return (m_buffer.size() >= max_size);
}
 
void
flitBuffer::setMaxSize(int maximum)
{
    max_size = maximum;
}
 
bool
flitBuffer::functionalRead(Packet *pkt, WriteMask &mask)
{
    bool read = false;
    for (unsigned int i = 0; i < m_buffer.size(); ++i) {
        if (m_buffer[i]->functionalRead(pkt, mask)) {
            read = true;
        }
    }
 
    return read;
}
 
uint32_t
flitBuffer::functionalWrite(Packet *pkt)
{
    uint32_t num_functional_writes = 0;
 
    for (unsigned int i = 0; i < m_buffer.size(); ++i) {
        if (m_buffer[i]->functionalWrite(pkt)) {
            num_functional_writes++;
        }
    }
 
    return num_functional_writes;
}
 
} // namespace garnet
} // namespace ruby
} // namespace gem5