bgirgis/concurrency-in-action
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This commit is contained in:
Bassem Girgis
2018-10-18 00:40:34 -05:00
parent fffe4528da
commit 31c32e368a
149 changed files with 5974 additions and 6287 deletions
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54
source/listing_3.13.cpp
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@@ -1,30 +1,32 @@
#include <map>
#include <string>
#include <mutex>
#include <boost/thread/shared_mutex.hpp>
#include <map>
#include <mutex>
#include <string>
class dns_entry
{};
class dns_cache
{
std::map<std::string,dns_entry> entries;
boost::shared_mutex entry_mutex;
public:
dns_entry find_entry(std::string const& domain)
{
boost::shared_lock<boost::shared_mutex> lk(entry_mutex);
std::map<std::string,dns_entry>::const_iterator const it=
entries.find(domain);
return (it==entries.end())?dns_entry():it->second;
}
void update_or_add_entry(std::string const& domain,
dns_entry const& dns_details)
{
std::lock_guard<boost::shared_mutex> lk(entry_mutex);
entries[domain]=dns_details;
}
class dns_entry {
};
int main()
{}
class dns_cache {
std::map<std::string, dns_entry> entries;
boost::shared_mutex entry_mutex;
public:
dns_entry find_entry(std::string const& domain)
{
boost::shared_lock<boost::shared_mutex> lk(entry_mutex);
std::map<std::string, dns_entry>::const_iterator const it =
entries.find(domain);
return (it == entries.end()) ? dns_entry() : it->second;
}
void update_or_add_entry(std::string const& domain,
dns_entry const& dns_details)
{
std::lock_guard<boost::shared_mutex> lk(entry_mutex);
entries[domain] = dns_details;
}
};
int
main()
{
}