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/*
* This file is open source software, licensed to you under the terms
* of the Apache License, Version 2.0 (the "License"). See the NOTICE file
* distributed with this work for additional information regarding copyright
* ownership. You may not use this file except in compliance with the License.
*
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
/*
* Copyright 2018 ScyllaDB
*/
#include <seastar/testing/test_case.hh>
#include <seastar/testing/thread_test_case.hh>
#include <seastar/core/queue.hh>
#include <seastar/core/thread.hh>
#include <seastar/core/sleep.hh>
#include <seastar/core/loop.hh>
#include <seastar/core/future-util.hh>
#include <seastar/util/log.hh>
#include <seastar/util/alloc_failure_injector.hh>
using namespace seastar;
using namespace std::chrono_literals;
static seastar::logger testlog("testlog");
SEASTAR_THREAD_TEST_CASE(test_queue_pop_eventually) {
queue<int> q(100);
int pushed = 0;
bool pusher_done = false;
int popped = 0;
bool popper_done = false;
int stop = 0;
auto test_duration = 1ms;
auto watchdog_duration = 10s;
timer stop_timer;
stop_timer.set_callback([&] {
testlog.debug("stop_timer: pushed={} pusher_done={} popped={} popper_done={} full={} empty={} stop={}",
pushed, pusher_done, popped, popper_done,
q.full(), q.empty(), stop);
if (!stop++) {
// First callback is for stopping the test.
// Second one is a watchdog. Consider the test hung
// if this callback isn't canceled within 10 seconds.
// That should be long enough to work in absurdly slow test environments.
stop_timer.arm(watchdog_duration);
} else {
testlog.error("test_queue_pop_eventually is hung: pushed={} pusher_done={} popped={} popper_done={} full={} empty={} stop={}",
pushed, pusher_done, popped, popper_done,
q.full(), q.empty(), stop);
abort();
}
});
stop_timer.arm(test_duration);
auto start = std::chrono::system_clock::now();
auto pusher = repeat([&] {
auto&& data = pushed;
testlog.trace("pusher: full={} empty={} stop={}", q.full(), q.empty(), stop);
return q.push_eventually(std::move(data)).then([&] {
pushed++;
if (stop && !q.empty()) {
testlog.debug("pusher done");
pusher_done = true;
return stop_iteration::yes;
}
return stop_iteration::no;
});
});
auto popper = repeat([&] {
testlog.trace("popper: full={} empty={} stop={}", q.full(), q.empty(), stop);
if (q.empty()) {
if (pusher_done) {
testlog.debug("popper done");
popper_done = true;
return make_ready_future<stop_iteration>(true);
} else if (stop) {
testlog.debug("popper: full={} empty={} pusher_done={} stop={}", q.full(), q.empty(), pusher_done, stop);
}
}
return q.pop_eventually().then([&] (int&&) {
popped++;
return stop_iteration::no;
});
});
pusher.get();
popper.get();
auto elapsed = std::chrono::system_clock::now() - start;
auto elapsed_us = std::chrono::duration_cast<std::chrono::microseconds>(elapsed).count();
stop_timer.cancel();
BOOST_REQUIRE(q.empty());
BOOST_REQUIRE(pushed);
BOOST_REQUIRE(pusher_done);
BOOST_REQUIRE(popped == pushed);
BOOST_REQUIRE(popper_done);
testlog.info("Pushed and popped {} elemements in {}us, {:.3f} elements/us", pushed, elapsed_us, double(pushed) / elapsed_us);
}
#ifdef SEASTAR_ENABLE_ALLOC_FAILURE_INJECTION
SEASTAR_THREAD_TEST_CASE(test_queue_push_eventually_exception) {
int i = 0;
queue<int> q(42);
int intercepted = 0;
memory::with_allocation_failures([&] {
BOOST_REQUIRE_NO_THROW(q.push_eventually(i++).handle_exception_type([&] (std::bad_alloc&) {
intercepted++;
}).get());
});
BOOST_REQUIRE(intercepted);
}
#endif
SEASTAR_TEST_CASE(test_queue_pop_after_abort) {
return async([] {
queue<int> q(1);
bool exception = false;
bool timer = false;
future<> done = make_ready_future();
q.abort(std::make_exception_ptr(std::runtime_error("boom")));
done = sleep(1ms).then([&] {
timer = true;
q.abort(std::make_exception_ptr(std::runtime_error("boom")));
});
try {
q.pop_eventually().get();
} catch(...) {
exception = !timer;
}
BOOST_REQUIRE(exception);
done.get();
});
}
SEASTAR_TEST_CASE(test_queue_push_abort) {
return async([] {
queue<int> q(1);
bool exception = false;
bool timer = false;
future<> done = make_ready_future();
q.abort(std::make_exception_ptr(std::runtime_error("boom")));
done = sleep(1ms).then([&] {
timer = true;
q.abort(std::make_exception_ptr(std::runtime_error("boom")));
});
try {
q.push_eventually(1).get();
} catch(...) {
exception = !timer;
}
BOOST_REQUIRE(exception);
done.get();
});
}
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