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socket ref or native file descriptor for poller without use of std::variant_t

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This commit is contained in:
Stephan Schim 2023-07-25 19:11:42 +02:00
parent dd67d56eae
commit 2533a7e7a2
1 changed files with 62 additions and 6 deletions
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68
zmq_addon.hpp
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@ -34,8 +34,65 @@
#include <limits>
#include <functional>
#include <unordered_map>
#include <variant>
#endif
namespace zmq
{
// socket ref or native file descriptor for poller
class poller_ref_t
{
public:
enum RefType
{
RT_SOCKET,
RT_FD
};
poller_ref_t() : poller_ref_t(socket_ref{})
{}
poller_ref_t(const zmq::socket_ref& socket) : data{RT_SOCKET, socket, {}}
{}
poller_ref_t(zmq::fd_t fd) : data{RT_FD, {}, fd}
{}
size_t hash() const ZMQ_NOTHROW
{
std::size_t h = 0;
hash_combine(h, std::get<0>(data));
hash_combine(h, std::get<1>(data));
hash_combine(h, std::get<2>(data));
return h;
}
bool operator == (const poller_ref_t& o) const ZMQ_NOTHROW
{
return data == o.data;
}
private:
template <class T>
static void hash_combine(std::size_t& seed, const T& v) ZMQ_NOTHROW
{
std::hash<T> hasher;
seed ^= hasher(v) + 0x9e3779b9 + (seed<<6) + (seed>>2);
}
std::tuple<int, zmq::socket_ref, zmq::fd_t> data;
}; // class poller_ref_t
} // namespace zmq
// std::hash<> specialization for std::unordered_map
template <> struct std::hash<zmq::poller_ref_t>
{
size_t operator()(const zmq::poller_ref_t& ref) const ZMQ_NOTHROW
{
return ref.hash();
}
};
#endif // ZMQ_CPP11
namespace zmq
{
@ -684,7 +741,7 @@ class active_poller_t
void add(zmq::socket_ref socket, event_flags events, handler_type handler)
{
const Ref ref{socket};
const poller_ref_t ref{socket};
if (!handler)
throw std::invalid_argument("null handler in active_poller_t::add (socket)");
@ -705,7 +762,7 @@ class active_poller_t
void add(fd_t fd, event_flags events, handler_type handler)
{
const Ref ref{fd};
const poller_ref_t ref{fd};
if (!handler)
throw std::invalid_argument("null handler in active_poller_t::add (fd)");
@ -778,8 +835,7 @@ class active_poller_t
poller_t<handler_type> base_poller{};
using Ref = std::variant<socket_ref, fd_t>;
std::unordered_map<Ref, std::shared_ptr<handler_type>> handlers{};
std::unordered_map<zmq::poller_ref_t, std::shared_ptr<handler_type>> handlers{};
std::vector<decltype(base_poller)::event_type> poller_events{};
std::vector<std::shared_ptr<handler_type>> poller_handlers{};