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/***************************************************************************

 *  lib/common/log.cpp

 *

 *  Part of the STXXL. See http://stxxl.sourceforge.net

 *

 *  Copyright (C) 2004-2005 Roman Dementiev <dementiev@ira.uka.de>

 *  Copyright (C) 2008 Johannes Singler <singler@ira.uka.de>

 *  Copyright (C) 2009 Andreas Beckmann <beckmann@cs.uni-frankfurt.de>

 *

 *  Distributed under the Boost Software License, Version 1.0.

 *  (See accompanying file LICENSE_1_0.txt or copy at

 *  http://www.boost.org/LICENSE_1_0.txt)

 **************************************************************************/



#include <stxxl/bits/common/log.h>

#include <stxxl/bits/namespace.h>



#include <cstdlib>



STXXL_BEGIN_NAMESPACE



logger::logger() : waitlog_stream_(NULL)

{

    const char* log_filename = getenv("STXXLLOGFILE");

    log_stream_.open(log_filename == NULL ? "stxxl.log" : log_filename);

    const char* errlog_filename = getenv("STXXLERRLOGFILE");

    errlog_stream_.open(errlog_filename == NULL ? "stxxl.errlog" : errlog_filename);

#ifdef STXXL_WAIT_LOG_ENABLED

    const char* waitlog_filename = getenv("STXXLWAITLOGFILE");

    if (waitlog_filename) {

        waitlog_stream_ = new std::ofstream(waitlog_filename);

        *waitlog_stream_ << "# time\trd_incr\twr_incr\tw_read\tw_write" << std::endl;

    }

#endif

}



logger::~logger()

{

    delete waitlog_stream_;

}



STXXL_END_NAMESPACE