31 lines
753 B
C++
31 lines
753 B
C++
#include <map>
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#include <string>
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#include <mutex>
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#include <boost/thread/shared_mutex.hpp>
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class dns_entry
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{};
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class dns_cache
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{
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std::map<std::string,dns_entry> entries;
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boost::shared_mutex entry_mutex;
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public:
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dns_entry find_entry(std::string const& domain)
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{
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boost::shared_lock<boost::shared_mutex> lk(entry_mutex);
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std::map<std::string,dns_entry>::const_iterator const it=
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entries.find(domain);
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return (it==entries.end())?dns_entry():it->second;
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}
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void update_or_add_entry(std::string const& domain,
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dns_entry const& dns_details)
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{
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std::lock_guard<boost::shared_mutex> lk(entry_mutex);
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entries[domain]=dns_details;
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}
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};
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int main()
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{}
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