#include <stdio.h>
#include <pthread.h>
#include <unistd.h>

// 定义两把锁
pthread_mutex_t mutex1, mutex2;

void *task1(void *data)
{
    char *taskName = (char *)data;
    pthread_mutex_lock(&mutex1);
    printf("%s 获取锁 1 成功, 等待 1 秒后获取锁 2\n", taskName);
    sleep(1);
    pthread_mutex_lock(&mutex2);
    printf("%s 获取锁 2 成功\n", taskName);
    printf("%s\n", taskName);

    // 释放锁
    pthread_mutex_unlock(&mutex2);
    pthread_mutex_unlock(&mutex1);
    return NULL;
}

void *task2(void *data)
{
    char *taskName = (char *)data;
    pthread_mutex_lock(&mutex1);
    printf("%s 获取锁 1 成功, 等待 1 秒后获取锁 2\n", taskName);
    sleep(1);
    pthread_mutex_lock(&mutex2);
    printf("%s 获取锁 2 成功\n", taskName);
    printf("%s\n", taskName);

    // 释放锁
    pthread_mutex_unlock(&mutex2);
    pthread_mutex_unlock(&mutex1);
    return NULL;
}

int main(int argc, char const *argv[])
{
    // 动态初始化锁
    pthread_mutex_init(&mutex1, NULL);
    pthread_mutex_init(&mutex2, NULL);

    // 创建线程
    pthread_t tid1, tid2;
    pthread_create(&tid1, NULL, task1, "hello");
    pthread_create(&tid2, NULL, task2, "world");
    pthread_join(tid1, NULL);
    pthread_join(tid2, NULL);

    // 销毁锁
    pthread_mutex_destroy(&mutex1);
    pthread_mutex_destroy(&mutex2);

    return 0;
}