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// Copyright (c) 2020 Egor Tensin <Egor.Tensin@gmail.com>
// This file is part of the "winapi-common" project.
// For details, see https://github.com/egor-tensin/winapi-common.
// Distributed under the MIT License.
#include <winapi/shmem.hpp>
#include <boost/config.hpp>
#include <boost/test/unit_test.hpp>
#include <condition_variable>
#include <mutex>
#include <thread>
using namespace winapi;
namespace {
BOOST_CONSTEXPR_OR_CONST auto shmem_name = "test-data-struct";
BOOST_CONSTEXPR_OR_CONST int main_data = -1;
BOOST_CONSTEXPR_OR_CONST int setter1_data = 69;
BOOST_CONSTEXPR_OR_CONST int setter2_data = 420;
struct DataStruct {
std::mutex mtx;
std::condition_variable cv;
int data;
};
void setter1_main() {
const auto data_struct = SharedObject<DataStruct>::open(shmem_name);
{
std::unique_lock<std::mutex> lck{data_struct->mtx};
data_struct->cv.wait(lck, [&]() { return data_struct->data == main_data; });
data_struct->data = setter1_data;
}
data_struct->cv.notify_all();
}
void setter2_main() {
auto data_struct = SharedObject<DataStruct>::open(shmem_name);
{
std::unique_lock<std::mutex> lck{data_struct->mtx};
data_struct->cv.wait(lck, [&]() { return data_struct->data == setter1_data; });
data_struct->data = setter2_data;
}
data_struct->cv.notify_all();
}
} // namespace
BOOST_AUTO_TEST_SUITE(shmem_tests)
BOOST_AUTO_TEST_CASE(basic) {
auto data_struct = SharedObject<DataStruct>::create(shmem_name);
std::thread setter1{&setter1_main};
std::thread setter2{&setter2_main};
{
std::lock_guard<std::mutex> lck{data_struct->mtx};
data_struct->data = main_data;
}
data_struct->cv.notify_all();
setter1.join();
setter2.join();
BOOST_TEST(data_struct->data == setter2_data);
}
BOOST_AUTO_TEST_SUITE_END()
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