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// Copyright (c) 2014, The Monero Project
//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification, are
// permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this list of
// conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice, this list
// of conditions and the following disclaimer in the documentation and/or other
// materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its contributors may be
// used to endorse or promote products derived from this software without specific
// prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Parts of this file are originally copyright (c) 2006-2013, Andrey N. Sabelnikov
#pragma once
#include <limits>
#include <boost/thread.hpp>
#include <boost/utility/value_init.hpp>
namespace epee
{
#define STD_TRY_BEGIN() try {
#define STD_TRY_CATCH(where_, ret_val) \
} \
catch (const std::exception &e) \
{ \
LOG_ERROR("EXCEPTION: " << where_ << ", mes: "<< e.what()); \
return ret_val; \
} \
catch (...) \
{ \
LOG_ERROR("EXCEPTION: " << where_ ); \
return ret_val; \
}
#define AUTO_VAL_INIT(v) boost::value_initialized<decltype(v)>()
namespace misc_utils
{
template<typename t_type>
t_type get_max_t_val(t_type t)
{
return (std::numeric_limits<t_type>::max)();
}
template<typename t_iterator>
t_iterator move_it_forward(t_iterator it, size_t count)
{
while(count--)
it++;
return it;
}
template<typename t_iterator>
t_iterator move_it_backward(t_iterator it, size_t count)
{
while(count--)
it--;
return it;
}
// TEMPLATE STRUCT less
template<class _Ty>
struct less_as_pod
: public std::binary_function<_Ty, _Ty, bool>
{ // functor for operator<
bool operator()(const _Ty& _Left, const _Ty& _Right) const
{ // apply operator< to operands
return memcmp(&_Left, &_Right, sizeof(_Left)) < 0;
}
};
template<class _Ty>
bool is_less_as_pod(const _Ty& _Left, const _Ty& _Right)
{ // apply operator< to operands
return memcmp(&_Left, &_Right, sizeof(_Left)) < 0;
}
inline
bool sleep_no_w(long ms )
{
boost::this_thread::sleep(
boost::get_system_time() +
boost::posix_time::milliseconds( std::max<long>(ms,0) ) );
return true;
}
template<class type_vec_type>
type_vec_type median(std::vector<type_vec_type> &v)
{
if(v.empty())
return boost::value_initialized<type_vec_type>();
if(v.size() == 1)
return v[0];
size_t n = (v.size()) / 2;
std::sort(v.begin(), v.end());
//nth_element(v.begin(), v.begin()+n-1, v.end());
if(v.size()%2)
{//1, 3, 5...
return v[n];
}else
{//2, 4, 6...
return (v[n-1] + v[n])/2;
}
}
/************************************************************************/
/* */
/************************************************************************/
struct call_befor_die_base
{
virtual ~call_befor_die_base(){}
};
typedef boost::shared_ptr<call_befor_die_base> auto_scope_leave_caller;
template<class t_scope_leave_handler>
struct call_befor_die: public call_befor_die_base
{
t_scope_leave_handler m_func;
call_befor_die(t_scope_leave_handler f):m_func(f)
{}
~call_befor_die()
{
m_func();
}
};
template<class t_scope_leave_handler>
auto_scope_leave_caller create_scope_leave_handler(t_scope_leave_handler f)
{
auto_scope_leave_caller slc(new call_befor_die<t_scope_leave_handler>(f));
return slc;
}
}
}
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