22c04190c6
This patch moves away from using M5_ATTR_OVERRIDE and the m5::hashmap (and similar) abstractions, as these are no longer needed with gcc 4.7 and clang 3.1 as minimum compiler versions.
727 lines
20 KiB
C++
727 lines
20 KiB
C++
/*
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* Copyright (c) 2015 ARM Limited
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* All rights reserved
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*
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* The license below extends only to copyright in the software and shall
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* not be construed as granting a license to any other intellectual
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* property including but not limited to intellectual property relating
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* to a hardware implementation of the functionality of the software
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* licensed hereunder. You may use the software subject to the license
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* terms below provided that you ensure that this notice is replicated
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* unmodified and in its entirety in all distributions of the software,
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* modified or unmodified, in source code or in binary form.
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*
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* Copyright (c) 2002-2005 The Regents of The University of Michigan
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* Copyright (c) 2013 Advanced Micro Devices, Inc.
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* Copyright (c) 2013 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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* Authors: Nathan Binkert
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* Erik Hallnor
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* Steve Reinhardt
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* Andreas Sandberg
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*/
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#include <sys/stat.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#include <cerrno>
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#include <fstream>
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#include <list>
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#include <string>
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#include <vector>
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#include "base/framebuffer.hh"
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#include "base/inifile.hh"
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#include "base/misc.hh"
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#include "base/output.hh"
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#include "base/str.hh"
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#include "base/trace.hh"
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#include "debug/Checkpoint.hh"
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#include "sim/eventq.hh"
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#include "sim/serialize.hh"
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#include "sim/sim_events.hh"
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#include "sim/sim_exit.hh"
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#include "sim/sim_object.hh"
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// For stat reset hack
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#include "sim/stat_control.hh"
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using namespace std;
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//
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// The base implementations use to_number for parsing and '<<' for
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// displaying, suitable for integer types.
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//
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template <class T>
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bool
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parseParam(const string &s, T &value)
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{
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return to_number(s, value);
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}
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template <class T>
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void
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showParam(CheckpointOut &os, const T &value)
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{
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os << value;
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}
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//
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// Template specializations:
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// - char (8-bit integer)
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// - floating-point types
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// - bool
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// - string
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//
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// Treat 8-bit ints (chars) as ints on output, not as chars
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template <>
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void
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showParam(CheckpointOut &os, const char &value)
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{
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os << (int)value;
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}
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template <>
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void
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showParam(CheckpointOut &os, const signed char &value)
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{
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os << (int)value;
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}
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template <>
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void
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showParam(CheckpointOut &os, const unsigned char &value)
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{
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os << (unsigned int)value;
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}
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template <>
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bool
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parseParam(const string &s, float &value)
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{
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return to_number(s, value);
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}
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template <>
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bool
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parseParam(const string &s, double &value)
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{
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return to_number(s, value);
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}
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template <>
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bool
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parseParam(const string &s, bool &value)
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{
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return to_bool(s, value);
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}
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// Display bools as strings
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template <>
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void
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showParam(CheckpointOut &os, const bool &value)
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{
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os << (value ? "true" : "false");
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}
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// String requires no processing to speak of
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template <>
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bool
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parseParam(const string &s, string &value)
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{
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value = s;
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return true;
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}
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int Serializable::ckptMaxCount = 0;
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int Serializable::ckptCount = 0;
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int Serializable::ckptPrevCount = -1;
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std::stack<std::string> Serializable::path;
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template <class T>
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void
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paramOut(CheckpointOut &os, const string &name, const T ¶m)
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{
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os << name << "=";
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showParam(os, param);
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os << "\n";
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}
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template <class T>
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void
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arrayParamOut(CheckpointOut &os, const string &name, const vector<T> ¶m)
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{
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typename vector<T>::size_type size = param.size();
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os << name << "=";
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if (size > 0)
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showParam(os, param[0]);
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for (typename vector<T>::size_type i = 1; i < size; ++i) {
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os << " ";
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showParam(os, param[i]);
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}
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os << "\n";
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}
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template <class T>
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void
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arrayParamOut(CheckpointOut &os, const string &name, const list<T> ¶m)
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{
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typename list<T>::const_iterator it = param.begin();
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os << name << "=";
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if (param.size() > 0)
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showParam(os, *it);
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it++;
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while (it != param.end()) {
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os << " ";
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showParam(os, *it);
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it++;
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}
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os << "\n";
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}
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template <class T>
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void
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arrayParamOut(CheckpointOut &os, const string &name, const set<T> ¶m)
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{
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typename set<T>::const_iterator it = param.begin();
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os << name << "=";
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if (param.size() > 0)
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showParam(os, *it);
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it++;
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while (it != param.end()) {
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os << " ";
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showParam(os, *it);
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it++;
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}
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os << "\n";
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}
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template <class T>
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void
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paramIn(CheckpointIn &cp, const string &name, T ¶m)
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{
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const string §ion(Serializable::currentSection());
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string str;
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if (!cp.find(section, name, str) || !parseParam(str, param)) {
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fatal("Can't unserialize '%s:%s'\n", section, name);
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}
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}
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template <class T>
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bool
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optParamIn(CheckpointIn &cp, const string &name, T ¶m, bool warn)
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{
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const string §ion(Serializable::currentSection());
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string str;
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if (!cp.find(section, name, str) || !parseParam(str, param)) {
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if (warn)
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warn("optional parameter %s:%s not present\n", section, name);
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return false;
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} else {
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return true;
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}
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}
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template <class T>
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void
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arrayParamOut(CheckpointOut &os, const string &name,
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const T *param, unsigned size)
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{
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os << name << "=";
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if (size > 0)
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showParam(os, param[0]);
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for (unsigned i = 1; i < size; ++i) {
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os << " ";
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showParam(os, param[i]);
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}
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os << "\n";
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}
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template <class T>
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void
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arrayParamIn(CheckpointIn &cp, const string &name, T *param, unsigned size)
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{
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const string §ion(Serializable::currentSection());
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string str;
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if (!cp.find(section, name, str)) {
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fatal("Can't unserialize '%s:%s'\n", section, name);
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}
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// code below stolen from VectorParam<T>::parse().
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// it would be nice to unify these somehow...
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vector<string> tokens;
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tokenize(tokens, str, ' ');
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// Need this if we were doing a vector
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// value.resize(tokens.size());
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if (tokens.size() != size) {
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fatal("Array size mismatch on %s:%s'\n", section, name);
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}
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for (vector<string>::size_type i = 0; i < tokens.size(); i++) {
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// need to parse into local variable to handle vector<bool>,
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// for which operator[] returns a special reference class
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// that's not the same as 'bool&', (since it's a packed
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// vector)
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T scalar_value;
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if (!parseParam(tokens[i], scalar_value)) {
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string err("could not parse \"");
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err += str;
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err += "\"";
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fatal(err);
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}
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// assign parsed value to vector
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param[i] = scalar_value;
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}
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}
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template <class T>
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void
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arrayParamIn(CheckpointIn &cp, const string &name, vector<T> ¶m)
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{
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const string §ion(Serializable::currentSection());
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string str;
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if (!cp.find(section, name, str)) {
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fatal("Can't unserialize '%s:%s'\n", section, name);
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}
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// code below stolen from VectorParam<T>::parse().
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// it would be nice to unify these somehow...
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vector<string> tokens;
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tokenize(tokens, str, ' ');
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// Need this if we were doing a vector
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// value.resize(tokens.size());
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param.resize(tokens.size());
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for (vector<string>::size_type i = 0; i < tokens.size(); i++) {
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// need to parse into local variable to handle vector<bool>,
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// for which operator[] returns a special reference class
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// that's not the same as 'bool&', (since it's a packed
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// vector)
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T scalar_value;
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if (!parseParam(tokens[i], scalar_value)) {
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string err("could not parse \"");
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err += str;
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err += "\"";
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fatal(err);
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}
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// assign parsed value to vector
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param[i] = scalar_value;
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}
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}
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template <class T>
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void
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arrayParamIn(CheckpointIn &cp, const string &name, list<T> ¶m)
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{
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const string §ion(Serializable::currentSection());
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string str;
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if (!cp.find(section, name, str)) {
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fatal("Can't unserialize '%s:%s'\n", section, name);
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}
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param.clear();
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vector<string> tokens;
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tokenize(tokens, str, ' ');
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for (vector<string>::size_type i = 0; i < tokens.size(); i++) {
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T scalar_value;
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if (!parseParam(tokens[i], scalar_value)) {
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string err("could not parse \"");
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err += str;
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err += "\"";
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fatal(err);
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}
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// assign parsed value to vector
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param.push_back(scalar_value);
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}
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}
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template <class T>
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void
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arrayParamIn(CheckpointIn &cp, const string &name, set<T> ¶m)
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{
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const string §ion(Serializable::currentSection());
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string str;
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if (!cp.find(section, name, str)) {
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fatal("Can't unserialize '%s:%s'\n", section, name);
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}
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param.clear();
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vector<string> tokens;
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tokenize(tokens, str, ' ');
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for (vector<string>::size_type i = 0; i < tokens.size(); i++) {
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T scalar_value;
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if (!parseParam(tokens[i], scalar_value)) {
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string err("could not parse \"");
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err += str;
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err += "\"";
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fatal(err);
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}
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// assign parsed value to vector
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param.insert(scalar_value);
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}
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}
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void
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objParamIn(CheckpointIn &cp, const string &name, SimObject * ¶m)
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{
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const string §ion(Serializable::currentSection());
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if (!cp.findObj(section, name, param)) {
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fatal("Can't unserialize '%s:%s'\n", section, name);
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}
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}
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#define INSTANTIATE_PARAM_TEMPLATES(type) \
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template void \
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paramOut(CheckpointOut &os, const string &name, type const ¶m); \
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template void \
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paramIn(CheckpointIn &cp, const string &name, type & param); \
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template bool \
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optParamIn(CheckpointIn &cp, const string &name, type & param, \
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bool warn); \
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template void \
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arrayParamOut(CheckpointOut &os, const string &name, \
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type const *param, unsigned size); \
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template void \
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arrayParamIn(CheckpointIn &cp, const string &name, \
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type *param, unsigned size); \
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template void \
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arrayParamOut(CheckpointOut &os, const string &name, \
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const vector<type> ¶m); \
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template void \
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arrayParamIn(CheckpointIn &cp, const string &name, \
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vector<type> ¶m); \
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template void \
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arrayParamOut(CheckpointOut &os, const string &name, \
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const list<type> ¶m); \
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template void \
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arrayParamIn(CheckpointIn &cp, const string &name, \
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list<type> ¶m);
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INSTANTIATE_PARAM_TEMPLATES(char)
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INSTANTIATE_PARAM_TEMPLATES(signed char)
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INSTANTIATE_PARAM_TEMPLATES(unsigned char)
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INSTANTIATE_PARAM_TEMPLATES(signed short)
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INSTANTIATE_PARAM_TEMPLATES(unsigned short)
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INSTANTIATE_PARAM_TEMPLATES(signed int)
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INSTANTIATE_PARAM_TEMPLATES(unsigned int)
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INSTANTIATE_PARAM_TEMPLATES(signed long)
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INSTANTIATE_PARAM_TEMPLATES(unsigned long)
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INSTANTIATE_PARAM_TEMPLATES(signed long long)
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INSTANTIATE_PARAM_TEMPLATES(unsigned long long)
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INSTANTIATE_PARAM_TEMPLATES(bool)
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INSTANTIATE_PARAM_TEMPLATES(float)
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INSTANTIATE_PARAM_TEMPLATES(double)
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INSTANTIATE_PARAM_TEMPLATES(string)
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INSTANTIATE_PARAM_TEMPLATES(Pixel)
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// set is only used with strings and furthermore doesn't agree with Pixel
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template void
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arrayParamOut(CheckpointOut &, const string &, const set<string> &);
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template void
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arrayParamIn(CheckpointIn &, const string &, set<string> &);
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/////////////////////////////
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/// Container for serializing global variables (not associated with
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/// any serialized object).
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class Globals : public Serializable
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{
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public:
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Globals()
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: unserializedCurTick(0) {}
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void serialize(CheckpointOut &cp) const override;
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void unserialize(CheckpointIn &cp) override;
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Tick unserializedCurTick;
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};
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/// The one and only instance of the Globals class.
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Globals globals;
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/// The version tags for this build of the simulator, to be stored in the
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/// Globals section during serialization and compared upon unserialization.
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extern std::set<std::string> version_tags;
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void
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Globals::serialize(CheckpointOut &cp) const
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{
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paramOut(cp, "curTick", curTick());
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SERIALIZE_CONTAINER(version_tags);
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}
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void
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Globals::unserialize(CheckpointIn &cp)
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{
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paramIn(cp, "curTick", unserializedCurTick);
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const std::string §ion(Serializable::currentSection());
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std::string str;
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if (!cp.find(section, "version_tags", str)) {
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warn("**********************************************************\n");
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warn("!!!! Checkpoint uses an old versioning scheme. !!!!\n");
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warn("Run the checkpoint upgrader (util/cpt_upgrader.py) on your "
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"checkpoint\n");
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warn("**********************************************************\n");
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return;
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}
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std::set<std::string> cpt_tags;
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arrayParamIn(cp, "version_tags", cpt_tags); // UNSERIALIZE_CONTAINER
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bool err = false;
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for (const auto& t : version_tags) {
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if (cpt_tags.find(t) == cpt_tags.end()) {
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// checkpoint is missing tag that this binary has
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if (!err) {
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warn("*****************************************************\n");
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warn("!!!! Checkpoint is missing the following version tags:\n");
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err = true;
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}
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warn(" %s\n", t);
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}
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}
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if (err) {
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warn("You might experience some issues when restoring and should run "
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"the checkpoint upgrader (util/cpt_upgrader.py) on your "
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"checkpoint\n");
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warn("**********************************************************\n");
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}
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err = false;
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for (const auto& t : cpt_tags) {
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if (version_tags.find(t) == version_tags.end()) {
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// gem5 binary is missing tag that this checkpoint has
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if (!err) {
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warn("*****************************************************\n");
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warn("!!!! gem5 is missing the following version tags:\n");
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err = true;
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}
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warn(" %s\n", t);
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}
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}
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if (err) {
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warn("Running a checkpoint with incompatible version tags is not "
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"supported. While it might work, you may experience incorrect "
|
|
"behavior or crashes.\n");
|
|
warn("**********************************************************\n");
|
|
}
|
|
}
|
|
|
|
Serializable::Serializable()
|
|
{
|
|
}
|
|
|
|
Serializable::~Serializable()
|
|
{
|
|
}
|
|
|
|
void
|
|
Serializable::serializeSection(CheckpointOut &cp, const char *name) const
|
|
{
|
|
Serializable::ScopedCheckpointSection sec(cp, name);
|
|
serialize(cp);
|
|
}
|
|
|
|
void
|
|
Serializable::serializeSectionOld(CheckpointOut &cp, const char *name)
|
|
{
|
|
Serializable::ScopedCheckpointSection sec(cp, name);
|
|
serializeOld(cp);
|
|
}
|
|
|
|
void
|
|
Serializable::unserializeSection(CheckpointIn &cp, const char *name)
|
|
{
|
|
Serializable::ScopedCheckpointSection sec(cp, name);
|
|
unserialize(cp);
|
|
}
|
|
|
|
void
|
|
Serializable::serializeAll(const string &cpt_dir)
|
|
{
|
|
string dir = CheckpointIn::setDir(cpt_dir);
|
|
if (mkdir(dir.c_str(), 0775) == -1 && errno != EEXIST)
|
|
fatal("couldn't mkdir %s\n", dir);
|
|
|
|
string cpt_file = dir + CheckpointIn::baseFilename;
|
|
ofstream outstream(cpt_file.c_str());
|
|
time_t t = time(NULL);
|
|
if (!outstream.is_open())
|
|
fatal("Unable to open file %s for writing\n", cpt_file.c_str());
|
|
outstream << "## checkpoint generated: " << ctime(&t);
|
|
|
|
globals.serializeSection(outstream, "Globals");
|
|
|
|
SimObject::serializeAll(outstream);
|
|
}
|
|
|
|
void
|
|
Serializable::unserializeGlobals(CheckpointIn &cp)
|
|
{
|
|
globals.unserializeSection(cp, "Globals");
|
|
|
|
for (uint32_t i = 0; i < numMainEventQueues; ++i)
|
|
mainEventQueue[i]->setCurTick(globals.unserializedCurTick);
|
|
}
|
|
|
|
Serializable::ScopedCheckpointSection::~ScopedCheckpointSection()
|
|
{
|
|
assert(!path.empty());
|
|
DPRINTF(Checkpoint, "Popping: %s\n", path.top());
|
|
path.pop();
|
|
}
|
|
|
|
void
|
|
Serializable::ScopedCheckpointSection::pushName(const char *obj_name)
|
|
{
|
|
if (path.empty()) {
|
|
path.push(obj_name);
|
|
} else {
|
|
path.push(csprintf("%s.%s", path.top(), obj_name));
|
|
}
|
|
DPRINTF(Checkpoint, "ScopedCheckpointSection::pushName: %s\n", obj_name);
|
|
}
|
|
|
|
void
|
|
Serializable::ScopedCheckpointSection::nameOut(CheckpointOut &cp)
|
|
{
|
|
DPRINTF(Checkpoint, "ScopedCheckpointSection::nameOut: %s\n",
|
|
Serializable::currentSection());
|
|
cp << "\n[" << Serializable::currentSection() << "]\n";
|
|
}
|
|
|
|
void
|
|
debug_serialize(const string &cpt_dir)
|
|
{
|
|
Serializable::serializeAll(cpt_dir);
|
|
}
|
|
|
|
const std::string &
|
|
Serializable::currentSection()
|
|
{
|
|
assert(!path.empty());
|
|
|
|
return path.top();
|
|
}
|
|
|
|
const char *CheckpointIn::baseFilename = "m5.cpt";
|
|
|
|
string CheckpointIn::currentDirectory;
|
|
|
|
string
|
|
CheckpointIn::setDir(const string &name)
|
|
{
|
|
// use csprintf to insert curTick() into directory name if it
|
|
// appears to have a format placeholder in it.
|
|
currentDirectory = (name.find("%") != string::npos) ?
|
|
csprintf(name, curTick()) : name;
|
|
if (currentDirectory[currentDirectory.size() - 1] != '/')
|
|
currentDirectory += "/";
|
|
return currentDirectory;
|
|
}
|
|
|
|
string
|
|
CheckpointIn::dir()
|
|
{
|
|
return currentDirectory;
|
|
}
|
|
|
|
|
|
CheckpointIn::CheckpointIn(const string &cpt_dir, SimObjectResolver &resolver)
|
|
: db(new IniFile), objNameResolver(resolver), cptDir(setDir(cpt_dir))
|
|
{
|
|
string filename = cptDir + "/" + CheckpointIn::baseFilename;
|
|
if (!db->load(filename)) {
|
|
fatal("Can't load checkpoint file '%s'\n", filename);
|
|
}
|
|
}
|
|
|
|
CheckpointIn::~CheckpointIn()
|
|
{
|
|
delete db;
|
|
}
|
|
|
|
bool
|
|
CheckpointIn::find(const string §ion, const string &entry, string &value)
|
|
{
|
|
return db->find(section, entry, value);
|
|
}
|
|
|
|
|
|
bool
|
|
CheckpointIn::findObj(const string §ion, const string &entry,
|
|
SimObject *&value)
|
|
{
|
|
string path;
|
|
|
|
if (!db->find(section, entry, path))
|
|
return false;
|
|
|
|
value = objNameResolver.resolveSimObject(path);
|
|
return true;
|
|
}
|
|
|
|
|
|
bool
|
|
CheckpointIn::sectionExists(const string §ion)
|
|
{
|
|
return db->sectionExists(section);
|
|
}
|