33 lines
725 B
C++
33 lines
725 B
C++
#include <boost/thread/shared_mutex.hpp>
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#include <map>
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#include <mutex>
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#include <string>
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class dns_entry {
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};
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class dns_cache {
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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
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main()
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{
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}
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