gem5/dev/pktfifo.cc
Ron Dreslinski 867d80d55d Fix annoying bug that lead to dropped packets in the P4 system
dev/pktfifo.cc:
    Make it so that we don't unserialize the size of the fifo, clobering the fact that we were trying to make it bigger, and leading to a misleading config.out that states the un-overwritten max_size.
    Perhaps this should instead be a panic if the size (amount that was serialized) is bigger than the maxsize that was assigned by the configuration file.

--HG--
extra : convert_revision : d4b0527bfd7a584554ddc87c9b2103f7a3a72332
2005-01-21 04:55:43 -05:00

69 lines
2.6 KiB
C++

/*
* Copyright (c) 2002-2004 The Regents of The University of Michigan
* 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
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*/
#include "base/misc.hh"
#include "dev/pktfifo.hh"
using namespace std;
void
PacketFifo::serialize(const string &base, ostream &os)
{
paramOut(os, base + ".size", _size);
paramOut(os, base + ".maxsize", _maxsize);
paramOut(os, base + ".reserved", _reserved);
paramOut(os, base + ".packets", fifo.size());
int i = 0;
std::list<PacketPtr>::iterator p = fifo.begin();
std::list<PacketPtr>::iterator end = fifo.end();
while (p != end) {
(*p)->serialize(csprintf("%s.packet%d", base, i), os);
++p;
++i;
}
}
void
PacketFifo::unserialize(const string &base, Checkpoint *cp,
const string &section)
{
paramIn(cp, section, base + ".size", _size);
// paramIn(cp, section, base + ".maxsize", _maxsize);
paramIn(cp, section, base + ".reserved", _reserved);
int fifosize;
paramIn(cp, section, base + ".packets", fifosize);
fifo.clear();
for (int i = 0; i < fifosize; ++i) {
PacketPtr p = new PacketData(16384);
p->unserialize(csprintf("%s.packet%d", base, i), cp, section);
fifo.push_back(p);
}
}