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/*
* Copyright (c) 2006-2025, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2025-09-19 Rbb666 the first version
*/
#include <rtthread.h>
#include "utest.h"
#include <thread>
#include <mutex>
#include <chrono>
/**
* @brief Test basic mutex operations with lock_guard.
*/
static void test_mutex(void)
{
std::mutex m;
int count = 0;
auto func = [&]() mutable {
std::lock_guard<std::mutex> lock(m);
for (int i = 0; i < 1000; ++i)
{
++count;
}
};
std::thread t1(func);
std::thread t2(func);
t1.join();
t2.join();
uassert_int_equal(count, 2000);
}
/**
* @brief Test recursive mutex allowing multiple locks by the same thread.
*/
static void test_recursive_mutex(void)
{
std::recursive_mutex rm;
int count = 0;
auto func = [&]() mutable {
std::lock_guard<std::recursive_mutex> lock1(rm);
std::lock_guard<std::recursive_mutex> lock2(rm);
for (int i = 0; i < 1000; ++i)
{
++count;
}
};
std::thread t1(func);
std::thread t2(func);
t1.join();
t2.join();
if (count != 2000)
{
uassert_false(true);
}
uassert_true(true);
}
/**
* @brief Test try_lock on mutex.
*/
static void test_try_lock(void)
{
std::mutex m;
if (m.try_lock())
{
m.unlock();
uassert_true(true);
}
else
{
uassert_false(true);
}
}
/**
* @brief Test locking multiple mutexes with std::lock.
*/
static void test_lock_multiple(void)
{
std::mutex m1, m2;
std::lock(m1, m2);
m1.unlock();
m2.unlock();
uassert_true(true);
}
static rt_err_t utest_tc_init(void)
{
return RT_EOK;
}
static rt_err_t utest_tc_cleanup(void)
{
return RT_EOK;
}
static void testcase(void)
{
/* Test basic mutex operations with lock_guard */
UTEST_UNIT_RUN(test_mutex);
/* Test recursive mutex allowing multiple locks by the same thread */
UTEST_UNIT_RUN(test_recursive_mutex);
/* Test try_lock on mutex */
UTEST_UNIT_RUN(test_try_lock);
/* Test locking multiple mutexes with std::lock */
UTEST_UNIT_RUN(test_lock_multiple);
}
UTEST_TC_EXPORT(testcase, "components.libc.cpp.mutex_tc", utest_tc_init, utest_tc_cleanup, 10);
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