typedef managed_shared_memory::allocator<char>::type char_allocator; typedef basic_string<char, std::char_traits<char>, char_allocator>shm_string; struct quote { public: int market; int kind; shm_string seccode; shm_string secname; float price; float zf; quote(int market_, int kind_, const char* seccode_, const char_allocator& a, const char* secname_, const char_allocator& b, float price_, float zf_): market(market_),kind(kind_), seccode(seccode_, a), secname(secname_, b), price(price_), zf(zf_) {} }; typedef boost::multi_index::composite_key<quote, BOOST_MULTI_INDEX_MEMBER(quote, int, market), BOOST_MULTI_INDEX_MEMBER(quote, shm_string, seccode)

comp_key_search; typedef boost::multi_index::composite_key_compare< std::greater<int>, std::greater<shm_string> comp_key_compare_search;

typedef boost::multi_index::composite_key<quote, BOOST_MULTI_INDEX_MEMBER(quote, float, price), BOOST_MULTI_INDEX_MEMBER(quote, int, market), BOOST_MULTI_INDEX_MEMBER(quote, shm_string, seccode)

comp_key_sortbyprice; typedef boost::multi_index::composite_key_compare< std::greater<float>, std::greater<int>, std::greater<shm_string> comp_key_compare_sortbyprice;

typedef boost::multi_index::multi_index_container< quote, boost::multi_index::indexed_by< boost::multi_index::ordered_non_unique<comp_key_search, comp_key_compare_search>, boost::multi_index::ordered_non_unique<comp_key_sortbyprice, comp_key_compare_sortbyprice> >, managed_shared_memory::allocator<quote>::type

quote_mic;

int main() { /* struct shm_remove { shm_remove() { shared_memory_object::remove("MySharedMemory"); } ~shm_remove(){ shared_memory_object::remove("MySharedMemory"); } } remover; */ managed_shared_memory segment(open_only,"MySharedMemory"); quote_mic *quotes = segment.find_or_construct<quote_mic> ("My MultiIndex Container") //Container's name in shared memory ( quote_mic::ctor_args_list(), //, segment.get_allocator<quote>()); //Ctor parameters quote_mic::allocator_type(segment.get_segment_manager())); quote_mic::nth_index<0>::type& idx_search = quotes->get<0>(); quote_mic::nth_index<1>::type& idx_sortbyprice = quotes->get<1>(); int count = 0; char_allocator ca1(segment.get_allocator<char>()); // 查询股票实时行情 shm_string seccode("600000", ca1); count = idx_search.count(boost::tuples::make_tuple(1, seccode)); quote_mic::nth_index<0>::type::iterator it = idx_search.find(boost::tuples::make_tuple(1, seccode)); for (int i=0; i<count; i++) { std::cout << it->seccode << std::endl; it++; } std::vector<quote> result; BOOST_FOREACH(const quote& q, idx_sortbyprice) { int kind = q.kind; if (kind == 1 || kind == 11) { // std::cout << "市场" << q.market << ",类别" << q.kind << ", " << q.secname << ",最新价" << q.price << std::endl; result.push_back(q); this statement will compile error, why? how to write? } else { // std::cout << "过滤：市场" << q.market << ",类别" << q.kind << ", " << q.secname << ",最新价" << q.price << std::endl; } } return 0; }