线程安全梅森捻线机 [英] Thread safe mersenne twister

问题描述

寻找线程安全的随机生成器我找到了一个mersenne twister生成器类，作者说如果线程安全:

Looking for a thread safe random generator I found a mersenne twister generator class that the author says if thread safe:

http://www.umiacs.umd.edu/~yangcj/mtrnd.html

但是在研究了代码之后，我看不出它是否是安全线程.那里没有任何类型的锁或任何类似于锁变量的东西.

But after studying the code I cannot see were it is safe thread. There are no locks of any kind or anything resembling a lock variable in there.

这个实现真的是线程安全的吗?如果是这样，魔法是什么?

Is this implementation really thread safe? If so what is the magic?

推荐答案

它似乎是线程安全的，因为可以同时使用两个不同的 MersenneTwist 对象.你不能在两个线程中使用同一个对象而不用锁保护它.

It appears to be thread-safe in the sense that two different MersenneTwist objects can be used concurrently. You can't use the same object in two threads without protecting it with a lock.

我猜作者谈到的原始 C 版本使用了全局或静态变量，所以这是一个改进.

I guess the original C version the author talks about used global or static variables so it's an improvement.

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