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Factor out move_it_backward from misc_language.h
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330df2952c
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@ -37,15 +37,7 @@ namespace epee
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namespace misc_utils
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{
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template<typename t_iterator>
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t_iterator move_it_backward(t_iterator it, size_t count)
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{
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while(count--)
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it--;
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return it;
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}
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bool sleep_no_w(long ms );
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bool sleep_no_w(long ms);
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template <typename T>
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T get_mid(const T &a, const T &b)
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@ -31,6 +31,7 @@
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#pragma once
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#include <iosfwd>
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#include <iterator>
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#include <list>
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#include <string>
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#include <vector>
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@ -46,7 +47,6 @@
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#include "crypto/crypto.h"
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#include "cryptonote_config.h"
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#include "net/enums.h"
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#include "net/local_ip.h"
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#include "p2p_protocol_defs.h"
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#include "syncobj.h"
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@ -184,6 +184,7 @@ namespace nodetool
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private:
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void trim_white_peerlist();
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void trim_gray_peerlist();
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static peerlist_entry get_nth_latest_peer(peers_indexed& peerlist, size_t n);
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friend class boost::serialization::access;
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epee::critical_section m_peerlist_lock;
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@ -214,6 +215,16 @@ namespace nodetool
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}
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}
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//--------------------------------------------------------------------------------------------------
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inline
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peerlist_entry peerlist_manager::get_nth_latest_peer(peers_indexed& peerlist, const size_t n)
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{
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// Is not thread-safe nor does it check bounds. Do this before calling. Indexing starts at 0.
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peers_indexed::index<by_time>::type& by_time_index = peerlist.get<by_time>();
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auto by_time_it = --by_time_index.end();
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std::advance(by_time_it, -((long long) n));
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return *by_time_it;
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}
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//--------------------------------------------------------------------------------------------------
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inline
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bool peerlist_manager::merge_peerlist(const std::vector<peerlist_entry>& outer_bs, const std::function<bool(const peerlist_entry&)> &f)
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{
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@ -235,8 +246,7 @@ namespace nodetool
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if(i >= m_peers_white.size())
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return false;
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peers_indexed::index<by_time>::type& by_time_index = m_peers_white.get<by_time>();
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p = *epee::misc_utils::move_it_backward(--by_time_index.end(), i);
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p = peerlist_manager::get_nth_latest_peer(m_peers_white, i);
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return true;
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}
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//--------------------------------------------------------------------------------------------------
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@ -247,8 +257,7 @@ namespace nodetool
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if(i >= m_peers_gray.size())
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return false;
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peers_indexed::index<by_time>::type& by_time_index = m_peers_gray.get<by_time>();
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p = *epee::misc_utils::move_it_backward(--by_time_index.end(), i);
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p = peerlist_manager::get_nth_latest_peer(m_peers_gray, i);
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return true;
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}
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//--------------------------------------------------------------------------------------------------
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@ -437,9 +446,7 @@ namespace nodetool
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}
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size_t random_index = crypto::rand_idx(m_peers_gray.size());
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peers_indexed::index<by_time>::type& by_time_index = m_peers_gray.get<by_time>();
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pe = *epee::misc_utils::move_it_backward(--by_time_index.end(), random_index);
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pe = peerlist_manager::get_nth_latest_peer(m_peers_gray, random_index);
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return true;
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