// insert
std::pair<class map_t::const_iterator, bool>
emplace(const KEY_T& key, const PAY_T& pay) {
if (file_mode == READ_ONLY) {
throw std::runtime_error("Error: emplace called in RO mode");
}
return map->emplace(key, pay);
}
const char* name_t::map_string(const char* str, std::size_t hash) {
typedef std::unordered_map<std::size_t, const char*> map_t;
typedef std::lock_guard<std::mutex> lock_t;
static std::mutex sync_s;
lock_t lock(sync_s);
static adobe::unique_string_pool_t pool_s;
static map_t map_s;
map_t::const_iterator found(map_s.find(hash));
return found == map_s.end() ? map_s.emplace(hash, pool_s.add(str)).first->second
: found->second;
}
// change
std::pair<class map_t::const_iterator, bool>
change(const KEY_T& key, const PAY_T& pay) {
if (file_mode == READ_ONLY) {
throw std::runtime_error("Error: change called in RO mode");
}
// erase the old element
size_t num_erased = erase(key);
if (num_erased != 1) {
// erase failed
return std::pair<class map_t::const_iterator, bool>(map->end(), false);
} else {
// put in new
return map->emplace(key, pay);
}
}