Subversion Repositories openrisc_2011-10-31

// -*- C++ -*-

//

// Copyright (C) 2009, 2010 Free Software Foundation, Inc.

//

// This file is part of the GNU ISO C++ Library.  This library is free

// software; you can redistribute it and/or modify it under the terms

// of the GNU General Public License as published by the Free Software

// Foundation; either version 2, or (at your option) any later

// version.

// This library is distributed in the hope that it will be useful, but

// WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

// General Public License for more details.

// You should have received a copy of the GNU General Public License

// along with this library; see the file COPYING.  If not, write to

// the Free Software Foundation, 59 Temple Place - Suite 330, Boston,

// MA 02111-1307, USA.

// As a special exception, you may use this file as part of a free

// software library without restriction.  Specifically, if other files

// instantiate templates or use macros or inline functions from this

// file, or you compile this file and link it with other files to

// produce an executable, this file does not by itself cause the

// resulting executable to be covered by the GNU General Public

// License.  This exception does not however invalidate any other

// reasons why the executable file might be covered by the GNU General

// Public License.

/** @file profile/impl/profiler_trace.h

 *  @brief Diagnostics for container sizes.

 */

// Written by Lixia Liu and Silvius Rus.

#ifndef _GLIBCXX_PROFILE_PROFILER_CONTAINER_SIZE_H

#define _GLIBCXX_PROFILE_PROFILER_CONTAINER_SIZE_H 1

#ifdef __GXX_EXPERIMENTAL_CXX0X__

#include <cstdlib>

#include <cstdio>

#include <cstring>

#else

#include <stdlib.h>

#include <stdio.h>

#include <string.h>

#endif

#include <sstream>

#include "profile/impl/profiler.h"

#include "profile/impl/profiler_node.h"

#include "profile/impl/profiler_trace.h"

namespace __gnu_profile

{

/** @brief A container size instrumentation line in the object table.  */

class __container_size_info: public __object_info_base

{

 public:

  __container_size_info();

  __container_size_info(const __container_size_info& __o);

  __container_size_info(__stack_t __stack, size_t __num);

  virtual ~__container_size_info() {}

  void __write(FILE* f) const;

  float __magnitude() const { return static_cast<float>(_M_cost); }

  const char* __advice() const;

  void __merge(const __container_size_info& __o);

  // Call if a container is destructed or cleaned.

  void __destruct(size_t __num, size_t __inum);

  // Estimate the cost of resize/rehash. 

  float __resize_cost(size_t __from, size_t __to) { return __from; }

  // Call if container is resized.

  void __resize(size_t __from, size_t __to);

 private:

  size_t _M_init;

  size_t _M_max;  // range of # buckets

  size_t _M_min;

  size_t _M_total;

  size_t _M_item_min;  // range of # items

  size_t _M_item_max;

  size_t _M_item_total;

  size_t _M_count;

  size_t _M_resize;

  size_t _M_cost;

};

inline const char* __container_size_info::__advice() const

{

  std::stringstream __message;

  if (_M_init < _M_item_max)

    __message << "change initial container size from " << _M_init

              << " to " << _M_item_max;

  return strdup(__message.str().c_str());

}

inline void __container_size_info::__destruct(size_t __num, size_t __inum)

{

  _M_max = std::max(_M_max, __num);

  _M_item_max = std::max(_M_item_max, __inum);

  if (_M_min == 0) {

    _M_min = __num;

    _M_item_min = __inum;

  } else {

    _M_min = std::min(_M_min, __num);

    _M_item_min = std::min(_M_item_min, __inum);

  }

  _M_total += __num;

  _M_item_total += __inum;

  _M_count += 1;

}

inline void __container_size_info::__resize(size_t __from, size_t __to)

{

  _M_cost += this->__resize_cost(__from, __to);

  _M_resize += 1;

  _M_max = std::max(_M_max, __to);

}

inline __container_size_info::__container_size_info(__stack_t __stack,

                                                    size_t __num)

    : __object_info_base(__stack), _M_init(0), _M_max(0), _M_item_max(0),

      _M_min(0), _M_item_min(0), _M_total(0), _M_item_total(0), _M_cost(0),

      _M_count(0), _M_resize(0)

{

  _M_init = _M_max = __num;

  _M_item_min = _M_item_max = _M_item_total = _M_total = 0;

  _M_min = 0;

  _M_count = 0;

  _M_resize = 0;

}

inline void __container_size_info::__merge(const __container_size_info& __o)

{

  _M_init        = std::max(_M_init, __o._M_init);

  _M_max         = std::max(_M_max, __o._M_max);

  _M_item_max    = std::max(_M_item_max, __o._M_item_max);

  _M_min         = std::min(_M_min, __o._M_min);

  _M_item_min    = std::min(_M_item_min, __o._M_item_min);

  _M_total      += __o._M_total;

  _M_item_total += __o._M_item_total;

  _M_count      += __o._M_count;

  _M_cost       += __o._M_cost;

  _M_resize     += __o._M_resize;

}

inline __container_size_info::__container_size_info()

    : _M_init(0), _M_max(0), _M_item_max(0), _M_min(0), _M_item_min(0),

      _M_total(0), _M_item_total(0), _M_cost(0), _M_count(0), _M_resize(0)

{

}

inline __container_size_info::__container_size_info(

    const __container_size_info& __o)

    : __object_info_base(__o)

{

  _M_init        = __o._M_init;

  _M_max         = __o._M_max;

  _M_item_max    = __o._M_item_max;

  _M_min         = __o._M_min;

  _M_item_min    = __o._M_item_min;

  _M_total       = __o._M_total;

  _M_item_total  = __o._M_item_total;

  _M_cost        = __o._M_cost;

  _M_count       = __o._M_count;

  _M_resize      = __o._M_resize;

}

/** @brief A container size instrumentation line in the stack table.  */

class __container_size_stack_info: public __container_size_info

{

 public:

  __container_size_stack_info(const __container_size_info& __o)

      : __container_size_info(__o) {}

};

/** @brief Container size instrumentation trace producer.  */

class __trace_container_size

    : public __trace_base<__container_size_info, __container_size_stack_info>

{

 public:

  ~__trace_container_size() {}

  __trace_container_size()

      : __trace_base<__container_size_info, __container_size_stack_info>() {};

  // Insert a new node at construct with object, callstack and initial size. 

  void __insert(const __object_t __obj, __stack_t __stack, size_t __num);

  // Call at destruction/clean to set container final size.

  void __destruct(const void* __obj, size_t __num, size_t __inum);

  void __construct(const void* __obj, size_t __inum);

  // Call at resize to set resize/cost information.

  void __resize(const void* __obj, int __from, int __to);

};

inline void __trace_container_size::__insert(const __object_t __obj,

                                             __stack_t __stack, size_t __num)

{

  __add_object(__obj, __container_size_info(__stack, __num));

}

inline void __container_size_info::__write(FILE* __f) const

{

  fprintf(__f, "%Zu %Zu %Zu %Zu %Zu %Zu %Zu %Zu %Zu %Zu\n",

          _M_init, _M_count, _M_cost, _M_resize, _M_min, _M_max, _M_total,

          _M_item_min, _M_item_max, _M_item_total);

}

inline void __trace_container_size::__destruct(const void* __obj,

                                               size_t __num, size_t __inum)

{

  if (!__is_on()) return;

  __object_t __obj_handle = static_cast<__object_t>(__obj);

  __container_size_info* __object_info = __get_object_info(__obj_handle);

  if (!__object_info)

    return;

  __object_info->__destruct(__num, __inum);

  __retire_object(__obj_handle);

}

inline void __trace_container_size::__resize(const void* __obj, int __from,

                                             int __to)

{

  if (!__is_on()) return;

  __container_size_info* __object_info = __get_object_info(__obj);

  if (!__object_info)

    return;

  __object_info->__resize(__from, __to);

}

} // namespace __gnu_profile

#endif /* _GLIBCXX_PROFILE_PROFILER_CONTAINER_SIZE_H */