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//////////////////////////////////////////////////////////////////////////////
//
// (C) Copyright Ion Gaztanaga 2007-2013. Distributed under the Boost
// Software License, Version 1.0. (See accompanying file
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
// See http://www.boost.org/libs/container for documentation.
//
//////////////////////////////////////////////////////////////////////////////
#ifdef _MSC_VER
#pragma warning (disable : 4512)
#pragma warning (disable : 4267)
#pragma warning (disable : 4244)
#endif
#define BOOST_CONTAINER_VECTOR_ALLOC_STATS
#include <boost/container/allocator.hpp>
#include <vector>
#include <boost/container/vector.hpp>
#include <memory> //std::allocator
#include <iostream> //std::cout, std::endl
#include <cstring> //std::strcmp
#include <boost/move/detail/nsec_clock.hpp>
#include <typeinfo>
using boost::move_detail::cpu_timer;
using boost::move_detail::cpu_times;
using boost::move_detail::nanosecond_type;
namespace bc = boost::container;
#if defined(BOOST_CONTAINER_VECTOR_ALLOC_STATS)
template<class T, class Allocator>
static void reset_alloc_stats(std::vector<T, Allocator> &)
{}
template<class T, class Allocator>
static std::size_t get_num_alloc(std::vector<T, Allocator> &)
{ return 0; }
template<class T, class Allocator>
static std::size_t get_num_expand(std::vector<T, Allocator> &)
{ return 0; }
template<class T, class Allocator>
static void reset_alloc_stats(bc::vector<T, Allocator> &v)
{ v.reset_alloc_stats(); }
template<class T, class Allocator>
static std::size_t get_num_alloc(bc::vector<T, Allocator> &v)
{ return v.num_alloc; }
template<class T, class Allocator>
static std::size_t get_num_expand(bc::vector<T, Allocator> &v)
{ return v.num_expand_fwd; }
#endif //BOOST_CONTAINER_VECTOR_ALLOC_STATS
class MyInt
{
int int_;
public:
explicit MyInt(int i = 0)
: int_(i)
{}
MyInt(const MyInt &other)
: int_(other.int_)
{}
MyInt & operator=(const MyInt &other)
{
int_ = other.int_;
return *this;
}
~MyInt()
{
int_ = 0;
}
};
template<class Container>
void vector_test_template(std::size_t num_iterations, std::size_t num_elements)
{
std::size_t numalloc = 0, numexpand = 0;
cpu_timer timer;
timer.resume();
std::size_t capacity = 0;
for(std::size_t r = 0; r != num_iterations; ++r){
Container v;
#ifdef BOOST_CONTAINER_VECTOR_ALLOC_STATS
reset_alloc_stats(v);
#endif
//v.reserve(num_elements);
//MyInt a[3];
/*
for(std::size_t e = 0; e != num_elements/3; ++e){
v.insert(v.end(), &a[0], &a[0]+3);
}*/
/*
for(std::size_t e = 0; e != num_elements/3; ++e){
v.insert(v.end(), 3, MyInt((int)e));
}*/
/*
for(std::size_t e = 0; e != num_elements/3; ++e){
v.insert(v.empty() ? v.end() : --v.end(), &a[0], &a[0]+3);
}*/
/*
for(std::size_t e = 0; e != num_elements/3; ++e){
v.insert(v.empty() ? v.end() : --v.end(), 3, MyInt((int)e));
}*/
/*
for(std::size_t e = 0; e != num_elements/3; ++e){
v.insert(v.size() >= 3 ? v.end()-3 : v.begin(), &a[0], &a[0]+3);
}*/
/*
for(std::size_t e = 0; e != num_elements/3; ++e){
v.insert(v.size() >= 3 ? v.end()-3 : v.begin(), 3, MyInt((int)e));
}*/
/*
for(std::size_t e = 0; e != num_elements; ++e){
v.insert(v.end(), MyInt((int)e));
}*/
/*
for(std::size_t e = 0; e != num_elements; ++e){
v.insert(v.empty() ? v.end() : --v.end(), MyInt((int)e));
}*/
for(std::size_t e = 0; e != num_elements; ++e){
v.push_back(MyInt((int)e));
}
#ifdef BOOST_CONTAINER_VECTOR_ALLOC_STATS
numalloc += get_num_alloc(v);
numexpand += get_num_expand(v);
#endif
capacity = static_cast<std::size_t>(v.capacity());
}
timer.stop();
nanosecond_type nseconds = timer.elapsed().wall;
std::cout << std::endl
<< "Allocator: " << typeid(typename Container::allocator_type).name()
<< std::endl
<< " push_back ns: "
<< float(nseconds)/float(num_iterations*num_elements)
<< std::endl
<< " capacity - alloc calls (new/expand): "
<< (std::size_t)capacity << " - "
<< (float(numalloc) + float(numexpand))/float(num_iterations)
<< "(" << float(numalloc)/float(num_iterations) << "/" << float(numexpand)/float(num_iterations) << ")"
<< std::endl << std::endl;
bc::dlmalloc_trim(0);
}
void print_header()
{
std::cout << "Allocator" << ";" << "Iterations" << ";" << "Size" << ";"
<< "Capacity" << ";" << "push_back(ns)" << ";" << "Allocator calls" << ";"
<< "New allocations" << ";" << "Fwd expansions" << std::endl;
}
int main()
{
//#define SINGLE_TEST
#define SIMPLE_IT
#ifdef SINGLE_TEST
#ifdef NDEBUG
std::size_t numit [] = { 1000 };
#else
std::size_t numit [] = { 100 };
#endif
std::size_t numele [] = { 10000 };
#elif defined SIMPLE_IT
std::size_t numit [] = { 3 };
std::size_t numele [] = { 10000 };
#else
#ifdef NDEBUG
std::size_t numit [] = { 1000, 10000, 100000, 1000000 };
#else
std::size_t numit [] = { 100, 1000, 10000, 100000 };
#endif
std::size_t numele [] = { 10000, 1000, 100, 10 };
#endif
print_header();
for(std::size_t i = 0; i < sizeof(numele)/sizeof(numele[0]); ++i){
vector_test_template< bc::vector<MyInt, std::allocator<MyInt> > >(numit[i], numele[i]);
vector_test_template< bc::vector<MyInt, bc::allocator<MyInt, 1> > >(numit[i], numele[i]);
vector_test_template<bc::vector<MyInt, bc::allocator<MyInt, 2, bc::expand_bwd | bc::expand_fwd> > >(numit[i], numele[i]);
vector_test_template<bc::vector<MyInt, bc::allocator<MyInt, 2> > >(numit[i], numele[i]);
}
return 0;
}
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