breakpoints.cpp

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#include "breakpoints.H"

Breakpoints::Breakpoints(int quant) {
  quantMax = quant;
  if ( ( bp = (unsigned int *) calloc( quantMax,
                                       sizeof( unsigned int ) ) ) == NULL )
    {
      perror( "Couldn't allocate breakpoint array." );
      quantMax = 0;
    }
  memset( bp, 255, sizeof(unsigned int)* quantMax );
  this->quant = 0; /* no breakpoints at start up */
}


Breakpoints::~Breakpoints() {
  if ( bp ) free( bp );
  bp = NULL;
}


int Breakpoints::add(unsigned int address) {
  int i, tmp;

  if ( ( ! bp ) || ( quant >= quantMax ) )
    return -1;

  for ( i = 0; i < quant; i++ )
    /* Insert in order */
    if ( address < bp[i] )
      {
        tmp     = address;
        address = bp[i];
        bp[i]   = tmp;
      }

  bp[ quant ++ ] = address;
  return 0;
}


int Breakpoints::remove(unsigned int address) {
  int i;

  if ( ( ! bp ) || ( quant >= quantMax ) )
    return -1;

  for ( i = 0; i < quant; i ++ )
    if ( bp[ i ] == address )
      {
        /* Copy remaining breakpoints: [ a | b | c ] => [ a | c ] */
        for ( ; i < ( quant - 1 ); i ++ )
          bp[ i ] = bp[ i + 1 ];

        quant --;
        return 0;
      }

  return -1;
}

int Breakpoints::exists(unsigned int address) {
  int i;

  if ( ( ! bp ) || ( quant >= quantMax ) )
    return 0;

  for ( i = 0; i < quant; i ++ )
    if ( address == bp[ i ] )
      return 1;
    else
      /* bp is crescent order, so if current element is greater than desired
       * address, there's no address in list
       */
      if (  bp[ i ] > address )
        return 0;

  return 0;
}

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