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Diffstat (limited to 'contrib/epee/include/misc_language.h')
| -rw-r--r-- | contrib/epee/include/misc_language.h | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/contrib/epee/include/misc_language.h b/contrib/epee/include/misc_language.h new file mode 100644 index 000000000..d5157365c --- /dev/null +++ b/contrib/epee/include/misc_language.h @@ -0,0 +1,162 @@ +// Copyright (c) 2006-2013, Andrey N. Sabelnikov, www.sabelnikov.net +// All rights reserved. +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are met: +// * Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// * 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. +// * Neither the name of the Andrey N. Sabelnikov 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 OWNER 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. +// + + + +#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; + } + +} +} |