Start a child thread that evaluates the lock request.
启动一个对锁请求进行处理的子线程。
Use the same thread to lock and unlock a file.
使用相同的线程来锁定和解锁文件。
Once pthread_cond_wait() has the lock, it will then return and allow thread 1 to continue execution.
一旦 pthread_cond_wait()锁定了互斥对象，那么它将返回并允许1 号线程继续执行。
If thread two runs, it'll want to lock count_mutex, which is held by thread one.
如果线程2要运行，它就要锁定count _ mutex，而这个互斥量已经被线程1占有了。
If thread one runs, it'll want to lock rand_mutex, which is held by thread two.
如果线程1要运行，它就要锁定rand _ mutex，可是这个互斥量已经被线程2阻塞了。
Reset all information in a thread state object. The interpreter lock must be held.
重置指定线程状态对象的所有信息。解释器锁必须捕获。
The lock function main thread gets the result from the child thread.
lock函数主线程从子线程获得结果。
Reset all information in a thread state object. The interpreter lock must be held.
重置指定线程状态对象的所有信息。解释器锁必须捕获。 捕获状态解释。
As with implicit locks, only one thread can own a lock object at a time.
同严格实现的锁一样，一个线程一次只能拥有一个锁对象。
To guarantee thread safety during enumeration, you can lock the collection during the entire enumeration.
若要确保枚举过程中的线程安全性，可以在整个枚举过程中锁定集合。
Lock your object or fields instead to guarantee deterministic and thread-safe access.
锁定对象或域，而不是去保证决定性和线程安全访问。
A thread attempts to acquire a lock on an object that has a weak identity.
线程尝试获取对具有弱标识的对象的锁。
A thread attempts to acquire a lock on an object that has a weak identity.
线程尝试获取对具有弱标识的对象的锁。
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