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Logger.cpp

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/*
Copyright (c) 2000-2003, Jelle Kok, University of Amsterdam
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.

2. 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.

3. Neither the name of the University of Amsterdam 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.
*/

#include "Logger.h"
#include <stdio.h>    // needed for vsprintf
#include <string>     // needed for string
#ifdef Solaris
 #include <varargs.h> // needed for va_list and va_start under Solaris
#else
 #include <stdarg.h>
#endif

Logger Log;          
Logger LogDraw;      
/*****************************************************************************/
/**************************** LOGGER *****************************************/
/*****************************************************************************/

Logger::Logger( ostream& o, int iMin, int iMax )
{
  pthread_mutex_init( &mutex_stream, NULL );
  strcpy( m_strHeader, "" );
  m_timing.restartTime();
  addLogRange( iMin, iMax );
  m_os = &o;
}

bool Logger::log( int iLevel, string str)
{
  if( isInLogLevel( iLevel ) )
  {
    *m_os << m_strHeader << str;
    return true;
  }

  return false;
}

bool Logger::log( int iLevel, char *str, ... )
{
  if( isInLogLevel( iLevel ) )
  {
    logSignal(); // test whether there are no old strings left to log
    va_list ap;
#ifdef Solaris
    va_start( ap );
#else
    va_start( ap, str );
#endif
    if( vsnprintf( m_buf, MAX_LOG_LINE-1, str, ap ) == -1 )
      cerr << "Logger::log, buffer is too small!\n" ;
    va_end(ap);
    *m_os << m_strHeader << m_buf << "\n";
    return true;
  }

  return false;
}

bool Logger::logWithTime( int iLevel, char *str, ... )
{
  if( isInLogLevel( iLevel ) )
  {
    logSignal(); // test whether there are no old strings left to log
    va_list ap;
#ifdef Solaris
    va_start( ap );
#else
    va_start( ap, str );
#endif
    if( vsnprintf( m_buf, MAX_LOG_LINE-1, str, ap ) == -1 )
      cerr << "Logger::log, buffer is too small!" << "\n";
    va_end(ap);

    string s = m_strHeader;
    s.append( m_buf );
    s.copy( m_buf, string::npos );
    m_buf[s.length()] = '\0';
    m_timing.printTimeDiffWithText( *m_os, m_buf );

    return true;
  }

  return false;
}

bool Logger::logFromSignal( int iLevel, char   *str, ...        )
{
  char buf[MAX_LOG_LINE];
  if( isInLogLevel( iLevel ) )
  {
    va_list ap;
#ifdef Solaris
    va_start( ap );
#else
    va_start( ap, str );
#endif
    if( vsnprintf( buf, MAX_LOG_LINE-1, str, ap ) == -1 )
      cerr << "Logger::log, buffer is too small!" << "\n";
    va_end(ap);

    char str[16];
    sprintf( str, "%2.2f: ", m_timing.getElapsedTime()*1000 );
    m_strSignal.append( str );
    m_strSignal.append( m_strHeader );
    m_strSignal.append( buf );
    m_strSignal.append(  "\n\0" );

    return true;
  }

  return false;

}

bool Logger::logSignal( )
{
  if( ! m_strSignal.empty() )
  {
    *m_os << "\n" << m_strSignal ;
    m_strSignal = "";
    return true;
  }
  return false;
}

void Logger::restartTimer()
{
  return m_timing.restartTime();
}

Timing Logger::getTiming( )
{
  return m_timing;
}


bool Logger::isInLogLevel( int iLevel )
{
  return m_setLogLevels.find( iLevel ) != m_setLogLevels.end() ;
}

bool  Logger::addLogLevel( int iLevel )
{
  m_setLogLevels.insert( iLevel );
  return true;
}

bool  Logger::addLogRange( int iMin, int iMax )
{
  bool bReturn = true;
  for( int i = iMin ; i <= iMax;  i++ )
    bReturn &= addLogLevel( i );
  return bReturn;
}

char* Logger::getHeader( )
{
  return m_strHeader;
}

bool Logger::setHeader( char *str )
{
  strcpy( m_strHeader, str );
  return true;
}

bool Logger::setHeader( int i1, int i2 )
{
  sprintf( m_strHeader, "(%d, %d) ", i1, i2 );
  return true;
}

bool Logger::setHeader( int i )
{
  sprintf( m_strHeader, " %d: ", i );
  return true;
}


bool Logger::setOutputStream( ostream& o )
{
  m_os = &o;
  return true;
}

ostream& Logger::getOutputStream(  )
{
  return *m_os;
}

void Logger::showLogLevels( ostream &os )
{
  set<int>::iterator itr;
  for (itr = m_setLogLevels.begin() ; itr != m_setLogLevels.end() ; itr++)
    os << *itr << " " ;
  os << "\n";
}
/*****************************************************************************/
/********************** CLASS TIMING *****************************************/
/*****************************************************************************/

#ifdef WIN32
double Timing::getTimeDifference( DWORD tv1, DWORD tv2 )
{
  return  ((double)(tv1 - tv2) / 1000.0) ;
}
#else
double Timing::getTimeDifference( struct timeval tv1, struct timeval tv2 )
{

  return  ((double)tv1.tv_sec + (double)tv1.tv_usec/1000000 ) -
          ((double)tv2.tv_sec + (double)tv2.tv_usec/1000000 ) ;
}
#endif

void Timing::printTimeDiffWithText( ostream &os, char *str, int iFactor )
{
  // set the with to 6 and fill remaining places with '0'.
  os <<setw(6)<< setfill('0')<< getElapsedTime()*iFactor << ":" << str << "\n";
}

double Timing::getElapsedTime( int iFactor )
{
#ifdef WIN32
  DWORD time2 = GetTickCount();
#else
  struct timeval time2;
  gettimeofday( &time2, NULL );
#endif
  return getTimeDifference( time2, time1 )*iFactor;
}

void Timing::restartTime( )
{
#ifdef WIN32
  time1 = GetTickCount();
#else
  gettimeofday( &time1, NULL );
#endif
}


/*****************************************************************************/
/**************************** TESTING PURPOSES *******************************/
/*****************************************************************************/

/*
#ifdef WIN32
  #include <windows.h>
#else
  #include<sys/poll.h>
#endif

int main( void )
{
  ofstream fout( "temp.txt" );
  Logger log( fout, 0, 2 );
  log.log( 0, "hello" );
  log.setHeader( "jelle" );
#ifdef WIN32
  Sleep(1000);
#else
  poll(0,0,1000);
#endif
  log.log( 2, "hello" );
  log.log( 3, "hello" );
  int j = 2;
  double i = 2.324234;
  printf( "hoi: "); fflush(stdout);
  log.logWithTime( 1, "|%f %d|", i, j);
}

*/

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