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// -*- C++ -*-
// Copyright (C) 2005-2015 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.
// 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/>.
// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
// Permission to use, copy, modify, sell, and distribute this software
// is hereby granted without fee, provided that the above copyright
// notice appears in all copies, and that both that copyright notice
// and this permission notice appear in supporting documentation. None
// of the above authors, nor IBM Haifa Research Laboratories, make any
// representation about the suitability of this software for any
// purpose. It is provided "as is" without express or implied
// warranty.
/**
* @file join_test.hpp
* Contains a join performance test.
*/
#ifndef PB_DS_JOIN_TEST_HPP
#define PB_DS_JOIN_TEST_HPP
#include <performance/time/timing_test_base.hpp>
#include <ext/pb_ds/detail/type_utils.hpp>
#include <performance/io/xml_formatter.hpp>
#include <common_type/priority_queue/string_form.hpp>
#include <iterator>
namespace __gnu_pbds
{
namespace test
{
namespace detail
{
template<typename It, typename Cntnr>
class double_push_functor
{
const It _M_begin;
const It _M_end;
public:
double_push_functor(It b, It e) : _M_begin(b), _M_end(e) { }
void
operator()(std::size_t resolution)
{
typedef typename Cntnr::const_reference const_reference;
for (std::size_t n = 0; n < resolution; ++n)
{
Cntnr c0;
Cntnr c1;
for (It it = _M_begin; it != _M_end; ++it)
{
c0.push(const_reference(it->first));
c1.push(const_reference(it->first));
}
}
}
};
template<typename It, typename Cntnr>
class double_push_join_functor
{
const It _M_begin;
const It _M_end;
public:
double_push_join_functor(It b, It e) : _M_begin(b), _M_end(e) { }
void
operator()(std::size_t resolution)
{
typedef typename Cntnr::const_reference const_reference;
for (std::size_t n = 0; n < resolution; ++n)
{
Cntnr c0;
Cntnr c1;
for (It it = _M_begin; it != _M_end; ++it)
{
c0.push(const_reference(it->first));
c1.push(const_reference(it->first));
}
c0.join(c1);
}
}
};
} // namespace detail
template<typename It>
class join_test : private __gnu_pbds::test::detail::timing_test_base
{
public:
join_test(It ins_b, size_t ins_vn, size_t ins_vs, size_t ins_vm)
: m_ins_b(ins_b), m_ins_vn(ins_vn), m_ins_vs(ins_vs), m_ins_vm(ins_vm)
{ }
template<typename Cntnr>
void
operator()(Cntnr)
{
using __gnu_pbds::test::detail::double_push_functor;
using __gnu_pbds::test::detail::double_push_join_functor;
typedef __gnu_pbds::test::detail::timing_test_base base_type;
typedef double_push_functor<It, Cntnr> psh_fnct;
typedef double_push_join_functor<It, Cntnr> psh_jn_fnct;
typedef xml_result_set_performance_formatter formatter_type;
formatter_type res(string_form<Cntnr>::name(),
string_form<Cntnr>::desc());
for (size_t n = 0; m_ins_vn + n* m_ins_vs < m_ins_vm; ++n)
{
const size_t v = m_ins_vn + n * m_ins_vs;
It b = m_ins_b;
It e = m_ins_b;
std::advance(e, v);
psh_fnct double_push_fn(b, e);
const double dbl_psh_res = base_type::operator()(double_push_fn);
psh_jn_fnct dbl_psh_jn_fn(b, e);
const double dbl_psh_jn_res = base_type::operator()(dbl_psh_jn_fn);
const double min_res = double(timing_test_base::min_time_res());
const double effective_delta = std::max(dbl_psh_jn_res - dbl_psh_res, min_res);
res.add_res(v, effective_delta / v);
}
}
private:
join_test(const join_test&);
template<typename Cntnr>
void
join(Cntnr, It b, It e)
{
Cntnr cntnr;
typedef typename Cntnr::const_reference const_reference;
for (It it = b; it != e; ++it)
cntnr.join(const_reference(*it));
}
const It m_ins_b;
const size_t m_ins_vn;
const size_t m_ins_vs;
const size_t m_ins_vm;
};
} // namespace test
} // namespace __gnu_pbds
#endif
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