src/base/logging.cc

/*
 * Copyright (c) 2014, 2017 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.
 *
 * Copyright (c) 2002-2005 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,
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 */

#include "base/logging.hh"

#include <sstream>

#include "base/hostinfo.hh"

namespace {

class NormalLogger : public Logger
{
  public:
    using Logger::Logger;

  protected:
    void log(const Loc &loc, std::string s) override { std::cerr << s; }
};

class ExitLogger : public NormalLogger
{
  public:
    using NormalLogger::NormalLogger;

  protected:
    void
    log(const Loc &loc, std::string s) override
    {
        std::stringstream ss;
        ccprintf(ss, "Memory Usage: %ld KBytes\n", memUsage());
        NormalLogger::log(loc, s + ss.str());
    }
};

class FatalLogger : public ExitLogger
{
  public:
    using ExitLogger::ExitLogger;

  protected:
    void exit() override { ::exit(1); }
};

ExitLogger panicLogger("panic: ");
FatalLogger fatalLogger("fatal: ");
NormalLogger warnLogger("warn: ");
NormalLogger infoLogger("info: ");
NormalLogger hackLogger("hack: ");

} // anonymous namespace

Logger &Logger::getPanic() { return panicLogger; }
Logger &Logger::getFatal() { return fatalLogger; }
Logger &Logger::getWarn() { return warnLogger; }
Logger &Logger::getInfo() { return infoLogger; }
Logger &Logger::getHack() { return hackLogger; }