memoryUsagePointerCounts.cxx

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/**
 * PANDA 3D SOFTWARE
 * Copyright (c) Carnegie Mellon University.  All rights reserved.
 *
 * All use of this software is subject to the terms of the revised BSD
 * license.  You should have received a copy of this license along
 * with this source code in a file named "LICENSE."
 *
 * @file memoryUsagePointerCounts.cxx
 * @author drose
 * @date 2001-06-04
 */

#include "memoryUsagePointerCounts.h"
#include "memoryInfo.h"

/**
 * Adds a pointer definition to the counter.
 */
void MemoryUsagePointerCounts::
add_info(MemoryInfo *info) {
#ifdef DO_MEMORY_USAGE
  _count++;

  if (info->is_size_known()) {
    _size += info->get_size();
  } else {
    _unknown_size_count++;
  }
#endif
}

/**
 *
 */
void MemoryUsagePointerCounts::
output(std::ostream &out) const {
#ifdef DO_MEMORY_USAGE
  out << _count << " pointers";
  if (_unknown_size_count < _count) {
    out << ", ";
    output_bytes(out, _size);
    out << ", avg ";
    output_bytes(out, _size / (_count - _unknown_size_count));
    out << " each";

    if (_unknown_size_count != 0) {
      out << " (" << _unknown_size_count << " of unknown size)";
    }
  }
#endif
}

/**
 * Formats a size in bytes in a meaningful and concise way for output, with
 * units.
 */
void MemoryUsagePointerCounts::
output_bytes(std::ostream &out, size_t size) {
#ifdef DO_MEMORY_USAGE
  if (size < 4 * 1024) {
    out << size << " bytes";

  } else if (size < 4 * 1024 * 1024) {
    out << size / 1024 << " Kb";

  } else {
    out << size / (1024 * 1024) << " Mb";
  }
#endif
}