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 * Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
 * Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
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 * of conditions and the following disclaimer in the documentation and/or other materials
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#include "it_pthread_test.h"

// 全局变量声明
static pthread_mutex_t g_pthreadMuxTest1;  // 互斥锁
static pthread_cond_t g_pthrdCondTest1;   // 条件变量
static unsigned int g_pthreadExit = 0;     // 用于控制线程退出的标志

// 线程1的执行函数：等待条件变量
static void *PthreadF01(void *t)
{
    int rc;
    unsigned int count = 0;
    const int testLoop = 2000;  // 设置循环次数为2000次

    // 循环等待条件变量并加锁互斥锁
    while (count < testLoop) {
        rc = pthread_mutex_lock(&g_pthreadMuxTest1);  // 加锁互斥锁
        ICUNIT_GOTO_EQUAL(rc, 0, rc, EXIT);  // 检查加锁是否成功

        rc = pthread_cond_wait(&g_pthrdCondTest1, &g_pthreadMuxTest1);  // 等待条件变量
        ICUNIT_GOTO_EQUAL(rc, 0, rc, EXIT);  // 检查等待是否成功

        rc = pthread_mutex_unlock(&g_pthreadMuxTest1);  // 解锁互斥锁
        ICUNIT_GOTO_EQUAL(rc, 0, rc, EXIT);  // 检查解锁是否成功

        count++;  // 增加计数
    }

    g_pthreadExit = 1;  // 设置退出标志
EXIT:
    return NULL;  // 返回空指针表示线程结束
}

// 线程2的执行函数：信号条件变量
static void *PthreadF02(void *t)
{
    int i;
    int rc;

    // 线程2循环发送信号唤醒等待中的线程1
    while (g_pthreadExit != 1) {
        rc = pthread_mutex_lock(&g_pthreadMuxTest1);  // 加锁互斥锁
        ICUNIT_GOTO_EQUAL(rc, 0, rc, EXIT);  // 检查加锁是否成功

        rc = pthread_cond_signal(&g_pthrdCondTest1);  // 发送条件变量信号
        ICUNIT_GOTO_EQUAL(rc, 0, rc, EXIT);  // 检查发送信号是否成功

        rc = pthread_mutex_unlock(&g_pthreadMuxTest1);  // 解锁互斥锁
        ICUNIT_GOTO_EQUAL(rc, 0, rc, EXIT);  // 检查解锁是否成功
    }

EXIT:
    pthread_exit(NULL);  // 退出线程
}

// 测试用例函数
static unsigned int TestCase(void)
{
    int i;
    long t1 = 1;
    long t2 = 2;
    int rc;
    pthread_t threads[3];  // 定义3个线程
    pthread_attr_t attr;   // 线程属性
    const int loopNum = 2; // 设置测试循环次数为2

    // 初始化全局变量
    g_pthreadExit = 0;  // 设置退出标志
    g_testCount = 0;    // 初始化测试计数
    pthread_mutex_init(&g_pthreadMuxTest1, NULL);  // 初始化互斥锁
    pthread_cond_init(&g_pthrdCondTest1, NULL);   // 初始化条件变量

    // 创建线程1，执行PthreadF01函数
    rc = pthread_create(&threads[0], NULL, PthreadF01, (void *)t1);
    ICUNIT_ASSERT_EQUAL(rc, 0, rc);  // 确保线程创建成功

    // 创建线程2，执行PthreadF02函数
    rc = pthread_create(&threads[1], NULL, PthreadF02, (void *)t2);
    ICUNIT_ASSERT_EQUAL(rc, 0, rc);  // 确保线程创建成功

    // 等待两个线程完成
    for (i = 0; i < loopNum; i++) {
        rc = pthread_join(threads[i], NULL);  // 等待线程结束
        ICUNIT_ASSERT_EQUAL(rc, 0, rc);  // 确保线程结束正常
    }

    // 销毁线程属性，互斥锁和条件变量
    rc = pthread_attr_destroy(&attr);  // 销毁线程属性
    ICUNIT_ASSERT_EQUAL(rc, 0, rc);  // 检查销毁是否成功

    rc = pthread_mutex_destroy(&g_pthreadMuxTest1);  // 销毁互斥锁
    ICUNIT_ASSERT_EQUAL(rc, 0, rc);  // 检查销毁是否成功

    rc = pthread_cond_destroy(&g_pthrdCondTest1);  // 销毁条件变量
    ICUNIT_ASSERT_EQUAL(rc, 0, rc);  // 检查销毁是否成功

    return 0;  // 测试用例成功结束
}

// 测试函数入口
void ItTestPthreadCond002(void)
{
    TEST_ADD_CASE("IT_POSIX_PTHREAD_COND_002", TestCase, TEST_POSIX, TEST_PTHREAD, TEST_LEVEL2, TEST_FUNCTION);  // 添加测试用例
}
