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Problem: poller_t invalid behaviour on invalid sockets

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On adding invalid socket (e.g. after move) there was exception thrown
but leaving modified and unconsistent internal state.
Besides that there was no possibility to remove a socket that was moved
into.

Solutions: check for socket validity (added operator bool) and changed
internal unordered_map "handlers" to operator on zmq internal pointers.

Added two test cases covering the issues.
This commit is contained in:
Pawel Kurdybacha
2018-04-18 07:00:41 +01:00
parent 60f7753133
commit 810b87c021
2 changed files with 34 additions and 6 deletions
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24
tests/poller.cpp
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@@ -228,4 +228,28 @@ TEST(poller, client_server)
ASSERT_TRUE(got_pollout);
}
TEST(poller, poller_add_invalid_socket_throws)
{
zmq::context_t context;
zmq::poller_t poller;
zmq::socket_t a {context, zmq::socket_type::router};
zmq::socket_t b {std::move (a)};
ASSERT_THROW (poller.add (a, ZMQ_POLLIN, zmq::poller_t::handler_t {}),
zmq::error_t);
ASSERT_EQ (0u, poller.size ());
}
TEST(poller, poller_remove_invalid_socket_throws)
{
zmq::context_t context;
zmq::socket_t socket {context, zmq::socket_type::router};
zmq::poller_t poller;
ASSERT_NO_THROW (poller.add (socket, ZMQ_POLLIN, zmq::poller_t::handler_t {}));
ASSERT_EQ (1u, poller.size ());
std::vector<zmq::socket_t> sockets;
sockets.emplace_back (std::move (socket));
ASSERT_THROW (poller.remove (socket), zmq::error_t);
ASSERT_EQ (1u, poller.size ());
}
#endif