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https://github.com/scylladb/scylladb.git
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4fdcd6c92f
Signed-off-by: Duarte Nunes <duarte@scylladb.com> Message-Id: <20180216191050.21902-1-duarte@scylladb.com>
92 lines
2.5 KiB
C++
92 lines
2.5 KiB
C++
/*
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* Copyright (C) 2017 ScyllaDB
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*/
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/*
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* This file is part of Scylla.
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*
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* Scylla is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Scylla is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Scylla. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <boost/test/unit_test.hpp>
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#include <seastar/core/thread.hh>
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#include <seastar/core/semaphore.hh>
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#include "utils/serialized_action.hh"
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#include "tests/test-utils.hh"
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#include "utils/phased_barrier.hh"
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SEASTAR_TEST_CASE(test_serialized_action_triggering) {
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return seastar::async([] {
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int current = 0;
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std::vector<int> history;
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promise<> p;
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seastar::semaphore sem{0};
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serialized_action act([&] {
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sem.signal(1);
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auto val = current;
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return p.get_future().then([&, val] {
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history.push_back(val);
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});
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});
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auto release = [&] {
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std::exchange(p, promise<>()).set_value();
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};
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auto t1 = act.trigger();
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sem.wait().get(); // wait for t1 action to block
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current = 1;
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auto t2 = act.trigger();
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auto t3 = act.trigger();
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current = 2;
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release();
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t1.get();
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BOOST_REQUIRE(history.size() == 1);
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BOOST_REQUIRE(history.back() == 0);
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BOOST_REQUIRE(!t2.available());
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BOOST_REQUIRE(!t3.available());
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sem.wait().get(); // wait for t2 action to block
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current = 3;
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auto t4 = act.trigger();
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release();
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t2.get();
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t3.get();
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BOOST_REQUIRE(history.size() == 2);
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BOOST_REQUIRE(history.back() == 2);
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BOOST_REQUIRE(!t4.available());
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sem.wait().get(); // wait for t4 action to block
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current = 4;
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release();
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t4.get();
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BOOST_REQUIRE(history.size() == 3);
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BOOST_REQUIRE(history.back() == 3);
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current = 5;
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auto t5 = act.trigger();
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sem.wait().get(); // wait for t5 action to block
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release();
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t5.get();
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BOOST_REQUIRE(history.size() == 4);
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BOOST_REQUIRE(history.back() == 5);
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});
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}
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