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#include "common.hh"
#include "logger.hh"
#include "looper.hh"
#include "task_runner.hh"
#include "task_runner_reply.hh"
#include <atomic>
#include <future>
#include <gtest/gtest.h>
#include <thread>
#include <vector>
namespace {
class TaskRunnerTest : public testing::Test {
protected:
virtual TaskRunner* runner() = 0;
virtual std::shared_ptr<TaskRunner> shared_runner() = 0;
virtual void run_until_idle() = 0;
};
class TaskRunnerLooper : public TaskRunnerTest {
protected:
TaskRunnerLooper()
: logger_(Logger::create_null()),
looper_(Looper::create()),
runner_(TaskRunner::create(looper_)) {
}
TaskRunner* runner() override {
return runner_.get();
}
std::shared_ptr<TaskRunner> shared_runner() override {
return runner_;
}
void run_until_idle() override {
runner_->post(std::bind(&Looper::quit, looper_.get()));
looper_->run(logger_.get());
}
private:
std::unique_ptr<Logger> logger_;
std::shared_ptr<Looper> looper_;
std::shared_ptr<TaskRunner> runner_;
};
class TaskRunnerThread : public TaskRunnerTest,
public testing::WithParamInterface<int> {
protected:
void SetUp() override {
runner_ = TaskRunner::create(GetParam());
}
TaskRunner* runner() override {
return runner_.get();
}
std::shared_ptr<TaskRunner> shared_runner() override {
return runner_;
}
void run_until_idle() override {
std::promise<bool> done;
auto done_future = done.get_future();
runner_->post([&done] { done.set_value(true); });
done_future.wait();
// Done above makes sure all of the queue has been finished
// but we also need to run the destructor for runner_ to make
// sure all threads have finished running the callback they have.
runner_ = TaskRunner::create(GetParam());
}
private:
std::shared_ptr<TaskRunner> runner_;
};
} // namespace
TEST_F(TaskRunnerLooper, sanity) {
auto value = std::make_unique<int>(0);
auto* value_ptr = value.get();
for (int i = 0; i < 100; ++i)
runner()->post([value_ptr] { (*value_ptr)++; });
run_until_idle();
EXPECT_EQ(100, *value);
}
TEST_F(TaskRunnerLooper, thread) {
auto value = std::make_shared<int>(0);
auto const main_thread_id = std::this_thread::get_id();
auto* tmp = runner();
std::vector<std::thread> threads;
for (size_t i = 0; i < 10; ++i) {
threads.emplace_back([&value, tmp, main_thread_id] {
tmp->post([&value, main_thread_id] {
if (std::this_thread::get_id() == main_thread_id) {
(*value)++;
}
});
});
}
for (auto& thread : threads) thread.join();
run_until_idle();
EXPECT_EQ(10, *value);
}
TEST_F(TaskRunnerLooper, reply) {
int result = 0;
std::function<int()> callback = [] () -> int {
return 10;
};
std::function<void(int)> reply = [&result] (int value) {
result = value;
};
post_and_reply(
runner(),
std::move(callback),
shared_runner(),
std::move(reply));
run_until_idle();
EXPECT_EQ(10, result);
}
/*
TEST_F(TaskRunnerLooper, reply_unique) {
int result = 0;
std::function<std::unique_ptr<int>()> callback =
[] () -> std::unique_ptr<int> {
return std::make_unique<int>(10);
};
std::function<void(std::unique_ptr<int>)> reply =
[&result] (std::unique_ptr<int> value) {
result = *value;
};
post_and_reply(
runner(),
std::move(callback),
shared_runner(),
std::move(reply));
run_until_idle();
EXPECT_EQ(10, result);
}
*/
TEST_P(TaskRunnerThread, sanity) {
std::atomic<int> value(0);
for (int i = 0; i < 100; ++i)
runner()->post([&value] { value++; });
run_until_idle();
EXPECT_EQ(100, value);
}
TEST_P(TaskRunnerThread, thread) {
std::mutex mutex;
std::set<std::thread::id> threads;
for (int i = 0; i < 100; ++i)
runner()->post([&threads, &mutex] {
bool new_thread;
{
std::unique_lock<std::mutex> lock(mutex);
auto pair = threads.insert(std::this_thread::get_id());
new_thread = pair.second;
}
if (new_thread)
std::this_thread::sleep_for(std::chrono::milliseconds(10));
});
run_until_idle();
EXPECT_EQ(GetParam(), threads.size());
}
INSTANTIATE_TEST_SUITE_P(Threads, TaskRunnerThread, testing::Values(1, 2, 10));
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