Jiri Daněk created PROTON-1631:
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Summary: [cpp] Stopping container in on_container_start after
opening a socket will hang with libuv io
Key: PROTON-1631
URL: https://issues.apache.org/jira/browse/PROTON-1631
Project: Qpid Proton
Issue Type: Improvement
Components: cpp-binding
Affects Versions: proton-c-0.18.0
Environment: Linux, libuv-1.14.1, git tip at commit
72b7ea0508e94aae3e5d9470293bc5c7e8250a45 (upstream/master) PROTON-1592 :
[python] restore original tx_recv.py example
Reporter: Jiri Daněk
Assignee: Cliff Jansen
Make yourself a libuv build with
{noformat}
cmake .. -DBUILD_GO=OFF -DCMAKE_BUILD_TYPE=Release -GNinja -DPROACTOR=libuv
{noformat}
Run the following test
{noformat}
struct less_immediate_stop_tester : public proton::messaging_handler {
listen_port port;
proton::listener listener;
bool done;
int scheduled_work;
less_immediate_stop_tester() : done(false), scheduled_work(0) {}
void connect(proton::container* c) {
}
void on_container_start(proton::container& c) PN_CPP_OVERRIDE {
listener = c.listen(port.url());
c.connect(port.url("localhost"));
c.stop();
}
};
// FIXME: this test has some Invalid reads in Valgrind // with
t.listener.stop() line commented out it doesn't
int test_container_less_immediate_stop() {
less_immediate_stop_tester t;
proton::container c(t);
c.run();
// t.listener.stop(); // saw this done in another test...
return 0;
}
{noformat}
It will hang with the following output
{nofornat}
ninja && PN_TRACE_FRM=1 proton-c/bindings/cpp/container_test && echo pass
[...]
TEST: test_container_less_immediate_stop()
[0x17cc4c0]: -> AMQP
[0x17cc4c0]:0 -> @open(16)
[container-id="e038fe4b-9996-4874-be7d-50274e1e193e", hostname="localhost",
channel-max=32767]
[0x17c9110]: <- AMQP
[0x17c9110]:0 <- @open(16)
[container-id="e038fe4b-9996-4874-be7d-50274e1e193e", hostname="localhost",
channel-max=32767]
[0x17c9110]: -> AMQP
[0x17c9110]:0 -> @open(16)
[container-id="e038fe4b-9996-4874-be7d-50274e1e193e", channel-max=32767]
[0x17cc4c0]: <- AMQP
[0x17cc4c0]:0 <- @open(16)
[container-id="e038fe4b-9996-4874-be7d-50274e1e193e", channel-max=32767]
{nofornat}
Now, this exact code does _not_ hang with epoll io.
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