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SequenceBarrierTests.cpp
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143 lines (111 loc) · 5.18 KB
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#include "stdafx.h"
#include "Disruptor/AlertException.h"
#include "Disruptor/IgnoreExceptionHandler.h"
#include "Disruptor/Sequence.h"
#include "SequenceBarrierTestsFixture.h"
using namespace Disruptor;
using namespace Disruptor::Tests;
BOOST_FIXTURE_TEST_SUITE(SequenceBarrierTests, SequenceBarrierTestsFixture)
BOOST_AUTO_TEST_CASE(ShouldWaitForWorkCompleteWhereCompleteWorkThresholdIsAhead)
{
const std::int32_t expectedNumberMessages = 10;
const std::int32_t expectedWorkSequence = 9;
fillRingBuffer(expectedNumberMessages);
auto sequence1 = std::make_shared< Sequence >(expectedNumberMessages);
auto sequence2 = std::make_shared< Sequence >(expectedNumberMessages);
auto sequence3 = std::make_shared< Sequence >(expectedNumberMessages);
EXPECT_CALL(*m_eventProcessorMock1, sequence()).WillOnce(testing::Return(sequence1));
EXPECT_CALL(*m_eventProcessorMock2, sequence()).WillOnce(testing::Return(sequence2));
EXPECT_CALL(*m_eventProcessorMock3, sequence()).WillOnce(testing::Return(sequence3));
auto dependencyBarrier = m_ringBuffer->newBarrier({ m_eventProcessorMock1->sequence(),
m_eventProcessorMock2->sequence(),
m_eventProcessorMock3->sequence() });
auto completedWorkSequence = dependencyBarrier->waitFor(expectedWorkSequence);
BOOST_CHECK_GE(completedWorkSequence, expectedWorkSequence);
}
BOOST_AUTO_TEST_CASE(ShouldWaitForWorkCompleteWhereAllWorkersAreBlockedOnRingBuffer)
{
const std::int32_t expectedNumberMessages = 10;
fillRingBuffer(expectedNumberMessages);
std::vector< std::shared_ptr< IEventProcessor > > workers(3);
for (auto i = 0u; i < workers.size(); ++i)
{
workers[i] = std::make_shared< StubEventProcessor >(expectedNumberMessages - 1);
}
auto dependencyBarrier = m_ringBuffer->newBarrier(Util::getSequencesFor(workers));
std::thread([=]
{
auto sequence = m_ringBuffer->next();
(*m_ringBuffer)[sequence].value(static_cast< int >(sequence));
m_ringBuffer->publish(sequence);
for (auto&& stubWorker : workers)
{
stubWorker->sequence()->setValue(sequence);
}
}).detach();
std::int64_t expectedWorkSequence = expectedNumberMessages;
auto completedWorkSequence = dependencyBarrier->waitFor(expectedWorkSequence);
BOOST_CHECK_GE(completedWorkSequence, expectedWorkSequence);
}
BOOST_AUTO_TEST_CASE(ShouldInterruptDuringBusySpin)
{
const std::int32_t expectedNumberMessages = 10;
fillRingBuffer(expectedNumberMessages);
auto signal = std::make_shared< CountdownEvent >(3);
auto sequence1 = std::make_shared< CountDownEventSequence >(8L, signal);
auto sequence2 = std::make_shared< CountDownEventSequence >(8L, signal);
auto sequence3 = std::make_shared< CountDownEventSequence >(8L, signal);
EXPECT_CALL(*m_eventProcessorMock1, sequence()).WillOnce(testing::Return(sequence1));
EXPECT_CALL(*m_eventProcessorMock2, sequence()).WillOnce(testing::Return(sequence2));
EXPECT_CALL(*m_eventProcessorMock3, sequence()).WillOnce(testing::Return(sequence3));
auto sequenceBarrier = m_ringBuffer->newBarrier(Util::getSequencesFor({ m_eventProcessorMock1,
m_eventProcessorMock2,
m_eventProcessorMock3 }));
auto alerted = false;
auto future = std::async(std::launch::async, [=, &alerted]()
{
try
{
sequenceBarrier->waitFor(expectedNumberMessages - 1);
}
catch (AlertException&)
{
alerted = true;
}
});
signal->wait(std::chrono::seconds(3));
sequenceBarrier->alert();
future.wait();
BOOST_CHECK_MESSAGE(alerted == true, "Thread was not interrupted");
}
BOOST_AUTO_TEST_CASE(ShouldWaitForWorkCompleteWhereCompleteWorkThresholdIsBehind)
{
const std::int32_t expectedNumberMessages = 10;
fillRingBuffer(expectedNumberMessages);
std::vector< std::shared_ptr< IEventProcessor > > eventProcessors(3);
for (auto i = 0u; i < eventProcessors.size(); ++i)
{
eventProcessors[i] = std::make_shared< StubEventProcessor >(expectedNumberMessages - 2);
}
auto eventProcessorBarrier = m_ringBuffer->newBarrier(Util::getSequencesFor(eventProcessors));
std::async(std::launch::async, [=]
{
for (auto&& stubWorker : eventProcessors)
{
stubWorker->sequence()->setValue(stubWorker->sequence()->value() + 1);
}
}).wait();
std::int64_t expectedWorkSequence = expectedNumberMessages - 1;
auto completedWorkSequence = eventProcessorBarrier->waitFor(expectedWorkSequence);
BOOST_CHECK_GE(completedWorkSequence, expectedWorkSequence);
}
BOOST_AUTO_TEST_CASE(ShouldSetAndClearAlertStatus)
{
auto sequenceBarrier = m_ringBuffer->newBarrier();
BOOST_CHECK_EQUAL(sequenceBarrier->isAlerted(), false);
sequenceBarrier->alert();
BOOST_CHECK_EQUAL(sequenceBarrier->isAlerted(), true);
sequenceBarrier->clearAlert();
BOOST_CHECK_EQUAL(sequenceBarrier->isAlerted(), false);
}
BOOST_AUTO_TEST_SUITE_END()