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/*
* Copyright (c) 2014 ARM Limited
* All rights reserved
*
* The license below extends only to copyright in the software and shall
* not be construed as granting a license to any other intellectual
* property including but not limited to intellectual property relating
* to a hardware implementation of the functionality of the software
* licensed hereunder. You may use the software subject to the license
* terms below provided that you ensure that this notice is replicated
* unmodified and in its entirety in all distributions of the software,
* modified or unmodified, in source code or in binary form.
*
* 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.
*
* Authors: Andrew Bardsley
*/
/**
* @file
*
* A logger to allow SystemC to capture DPRINTF messages (and similar things)
* using sc_report
*/
#include <cstdlib>
#include <cstring>
#include <sstream>
#include "sc_logger.hh"
namespace Gem5SystemC
{
/** Class to act as a streambuf for std::ostream which cuts output strings
* into lines and offers them to a logger */
class CuttingStreambuf : public std::streambuf
{
public:
/** Accumulate line so far */
std::ostringstream line;
/** Logger to send complete lines to */
Trace::Logger *logger;
CuttingStreambuf(Trace::Logger *logger_) : logger(logger_)
{ }
/** Accumulate to line up to \n and then emit */
int overflow(int i);
int sync();
/** Push a line out to the logger */
void outputLine();
~CuttingStreambuf();
};
void CuttingStreambuf::outputLine()
{
logger->logMessage((Tick)-1, "gem5", line.str());
line.clear();
line.str("");
}
/** This is pretty much the least efficient way of doing this, but it has the
* advantage of having very few corners to get wrong.
*
* A newly allocated streambuf will have no buffer to serve to its
* [oi]stream. It will, therefore, call overflow for every character it
* wants to insert into the output stream. Those characters are captured one
* by one here and added to this->line. */
int
CuttingStreambuf::overflow(int chr)
{
if (chr == '\n')
outputLine();
else if (chr != EOF)
line << (char) chr;
/* Always succeeds */
return 0;
}
int
CuttingStreambuf::sync()
{
if (!line.str().empty())
outputLine();
/* Always succeeds */
return 0;
}
CuttingStreambuf::~CuttingStreambuf()
{
sync();
}
Logger::Logger() :
cuttingStreambuf(new CuttingStreambuf(this)),
stream(cuttingStreambuf)
{
}
Logger::~Logger()
{
stream.flush();
delete cuttingStreambuf;
}
/** Log a single message as a single sc_report call */
void
Logger::logMessage(Tick when, const std::string &name,
const std::string &message)
{
/* Need to chop the newline off the message */
std::string message_without_nl = message;
message_without_nl.erase(
message_without_nl.find_last_not_of(" \n\r") + 1);
SC_REPORT_INFO(name.c_str(), message_without_nl.c_str());
}
std::ostream &
Logger::getOstream()
{
return stream;
}
}
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