跪求模拟“五个哲学家”问题的程序

范进

用pthread做。

wonderfulboiz

我用记录锁那章的内容编了个lock函数用于资源锁，编出来了运行后显示如下结果（不知道对不对？）：
philosopher 0 is thinking
philosopher 1 is thinking
philosopher 2 is thinking
philosopher 3 is thinking
philosopher 4 is thinking
philosopher 0 is eating
philosopher 2 is eating
philosopher 0 is thinking
philosopher 4 is eating
philosopher 2 is thinking
philosopher 1 is eating
philosopher 4 is thinking
philosopher 3 is eating
philosopher 1 is thinking
philosopher 0 is eating
philosopher 3 is thinking
philosopher 2 is eating
philosopher 0 is thinking
philosopher 4 is eating
philosopher 2 is thinking
philosopher 1 is eating
philosopher 4 is thinking
philosopher 3 is eating
philosopher 1 is thinking
philosopher 0 is eating
philosopher 3 is thinking
philosopher 2 is eating

lena850417

哈哈 你是XD的吧  是哪个？
lock.c lock.h 在老师给的源代码里面有阿
其实就是用创建文件的原子操作的原理
lock.c里面有三个函数
/*************************************
*
* 初始化餐叉文件，保证在程序开始前，
* 餐叉文件不存在
*
**************************************/
void initlock(const char *lockfile)
{

        unlink(lockfile);
}

/*************************************
*
* 为餐叉文件上锁
*
**************************************/
void lock(const char *lockfile)
{
        int        fd;
        while ( (fd = open(lockfile, O_RDONLY | O_CREAT | O_EXCL, FILE_MODE)) < 0)
                sleep(1);
        close(fd);
}

/*************************************
*
* 解除餐叉文件的锁
*
**************************************/
void unlock(const char *lockfile)
{
        unlink(lockfile);
}

wonderfulboiz

谢谢楼上热情的lena同学，o(∩_∩)o...哈哈