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// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include <vespa/fastos/fastos.h>
#include <vespa/log/log.h>
LOG_SETUP("sequencedtaskexecutor_test");
#include <vespa/searchlib/common/sequencedtaskexecutor.h>
#include <vespa/vespalib/testkit/testapp.h>
#include <vespa/vespalib/test/insertion_operators.h>
#include <mutex>
#include <condition_variable>
namespace search
{
namespace common
{
class Fixture
{
public:
SequencedTaskExecutor _threads;
Fixture()
: _threads(2)
{
}
};
class TestObj
{
public:
std::mutex _m;
std::condition_variable _cv;
int _done;
int _fail;
int _val;
TestObj()
: _m(),
_cv(),
_done(0),
_fail(0),
_val(0)
{
}
void
modify(int oldValue, int newValue)
{
{
std::lock_guard<std::mutex> guard(_m);
if (_val == oldValue) {
_val = newValue;
} else {
++_fail;
}
++_done;
}
_cv.notify_all();
}
void
wait(int wantDone)
{
std::unique_lock<std::mutex> guard(_m);
_cv.wait(guard, [=] { return this->_done >= wantDone; });
}
};
TEST_F("testExecute", Fixture) {
std::shared_ptr<TestObj> tv(std::make_shared<TestObj>());
EXPECT_EQUAL(0, tv->_val);
f._threads.execute(1, [=]() { tv->modify(0, 42); });
tv->wait(1);
EXPECT_EQUAL(0, tv->_fail);
EXPECT_EQUAL(42, tv->_val);
f._threads.sync();
EXPECT_EQUAL(0, tv->_fail);
EXPECT_EQUAL(42, tv->_val);
}
TEST_F("require that task with same id are serialized", Fixture)
{
std::shared_ptr<TestObj> tv(std::make_shared<TestObj>());
EXPECT_EQUAL(0, tv->_val);
f._threads.execute(0, [=]() { usleep(2000); tv->modify(0, 14); });
f._threads.execute(0, [=]() { tv->modify(14, 42); });
tv->wait(2);
EXPECT_EQUAL(0, tv->_fail);
EXPECT_EQUAL(42, tv->_val);
f._threads.sync();
EXPECT_EQUAL(0, tv->_fail);
EXPECT_EQUAL(42, tv->_val);
}
TEST_F("require that task with different ids are not serialized", Fixture)
{
int tryCnt = 0;
for (tryCnt = 0; tryCnt < 100; ++tryCnt) {
std::shared_ptr<TestObj> tv(std::make_shared<TestObj>());
EXPECT_EQUAL(0, tv->_val);
f._threads.execute(0, [=]() { usleep(2000); tv->modify(0, 14); });
f._threads.execute(2, [=]() { tv->modify(14, 42); });
tv->wait(2);
if (tv->_fail != 1) {
continue;
}
EXPECT_EQUAL(1, tv->_fail);
EXPECT_EQUAL(14, tv->_val);
f._threads.sync();
EXPECT_EQUAL(1, tv->_fail);
EXPECT_EQUAL(14, tv->_val);
break;
}
EXPECT_TRUE(tryCnt < 100);
}
TEST_F("require that task with same string id are serialized", Fixture)
{
std::shared_ptr<TestObj> tv(std::make_shared<TestObj>());
EXPECT_EQUAL(0, tv->_val);
auto test2 = [=]() { tv->modify(14, 42); };
f._threads.execute("0", [=]() { usleep(2000); tv->modify(0, 14); });
f._threads.execute("0", test2);
tv->wait(2);
EXPECT_EQUAL(0, tv->_fail);
EXPECT_EQUAL(42, tv->_val);
f._threads.sync();
EXPECT_EQUAL(0, tv->_fail);
EXPECT_EQUAL(42, tv->_val);
}
TEST_F("require that task with different string ids are not serialized",
Fixture)
{
int tryCnt = 0;
for (tryCnt = 0; tryCnt < 100; ++tryCnt) {
std::shared_ptr<TestObj> tv(std::make_shared<TestObj>());
EXPECT_EQUAL(0, tv->_val);
f._threads.execute("0", [=]() { usleep(2000); tv->modify(0, 14); });
f._threads.execute("2", [=]() { tv->modify(14, 42); });
tv->wait(2);
if (tv->_fail != 1) {
continue;
}
EXPECT_EQUAL(1, tv->_fail);
EXPECT_EQUAL(14, tv->_val);
f._threads.sync();
EXPECT_EQUAL(1, tv->_fail);
EXPECT_EQUAL(14, tv->_val);
break;
}
EXPECT_TRUE(tryCnt < 100);
}
TEST_F("require that execute works with const lambda", Fixture)
{
int i = 5;
std::vector<int> res;
const auto lambda = [i, &res]() mutable
{ res.push_back(i--); res.push_back(i--); };
f._threads.execute(0, lambda);
f._threads.execute(0, lambda);
f._threads.sync();
std::vector<int> exp({5, 4, 5, 4});
EXPECT_EQUAL(exp, res);
EXPECT_EQUAL(5, i);
}
TEST_F("require that execute works with reference to lambda", Fixture)
{
int i = 5;
std::vector<int> res;
auto lambda = [i, &res]() mutable
{ res.push_back(i--); res.push_back(i--); };
auto &lambdaref = lambda;
f._threads.execute(0, lambdaref);
f._threads.execute(0, lambdaref);
f._threads.sync();
std::vector<int> exp({5, 4, 5, 4});
EXPECT_EQUAL(exp, res);
EXPECT_EQUAL(5, i);
}
} // namespace common
} // namespace search
TEST_MAIN() { TEST_RUN_ALL(); }
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