--- /dev/null
+// -*- C++ -*-
+//
+// Copyright (C) 2009, 2010, 2011 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 3, 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.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3. If not see
+// <http://www.gnu.org/licenses/>.
+
+/** @file profile/impl/profiler_container_size.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
+
+#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()
+ : _M_init(0), _M_max(0), _M_min(0), _M_total(0), _M_item_min(0),
+ _M_item_max(0), _M_item_total(0), _M_count(0), _M_resize(0), _M_cost(0)
+ { }
+
+ __container_size_info(const __container_size_info& __o)
+ : __object_info_base(__o), _M_init(__o._M_init), _M_max(__o._M_max),
+ _M_min(__o._M_min), _M_total(__o._M_total),
+ _M_item_min(__o._M_item_min), _M_item_max(__o._M_item_max),
+ _M_item_total(__o._M_item_total), _M_count(__o._M_count),
+ _M_resize(__o._M_resize), _M_cost(__o._M_cost)
+ { }
+
+ __container_size_info(__stack_t __stack, std::size_t __num)
+ : __object_info_base(__stack), _M_init(__num), _M_max(__num),
+ _M_min(0), _M_total(0), _M_item_min(0), _M_item_max(0),
+ _M_item_total(0), _M_count(0), _M_resize(0), _M_cost(0)
+ { }
+
+ virtual ~__container_size_info() { }
+
+ void
+ __write(FILE* __f) const
+ {
+ std::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);
+ }
+
+ float
+ __magnitude() const
+ { return static_cast<float>(_M_cost); }
+
+ std::string
+ __advice() const
+ {
+ std::stringstream __message;
+ if (_M_init < _M_item_max)
+ __message << "change initial container size from " << _M_init
+ << " to " << _M_item_max;
+ return __message.str();
+ }
+
+ void
+ __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;
+ }
+
+ // Call if a container is destructed or cleaned.
+ void
+ __destruct(std::size_t __num, std::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;
+ }
+
+ // Estimate the cost of resize/rehash.
+ float
+ __resize_cost(std::size_t __from, std::size_t)
+ { return __from; }
+
+ // Call if container is resized.
+ void
+ __resize(std::size_t __from, std::size_t __to)
+ {
+ _M_cost += this->__resize_cost(__from, __to);
+ _M_resize += 1;
+ _M_max = std::max(_M_max, __to);
+ }
+
+ private:
+ std::size_t _M_init;
+ std::size_t _M_max; // range of # buckets
+ std::size_t _M_min;
+ std::size_t _M_total;
+ std::size_t _M_item_min; // range of # items
+ std::size_t _M_item_max;
+ std::size_t _M_item_total;
+ std::size_t _M_count;
+ std::size_t _M_resize;
+ std::size_t _M_cost;
+ };
+
+
+ /** @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, std::size_t __num)
+ { __add_object(__obj, __container_size_info(__stack, __num)); }
+
+ // XXX Undefined?
+ void
+ __construct(const void* __obj, std::size_t __inum);
+
+ // Call at destruction/clean to set container final size.
+ void
+ __destruct(const void* __obj, std::size_t __num, std::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);
+ }
+
+ // Call at resize to set resize/cost information.
+ void
+ __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 */
projects / cross.git / blobdiff