POSIX提供了互斥函数来创建临界区，用于实施单线程对对象（一块内存）的独占访问。
POSIX provides the mutex function to create critical sections that enforce exclusive access to an object (a piece of memory) by a single thread.
POSIX提供了互斥函数来创建临界区，用于实施单线程对对象（一块内存）的独占访问。
POSIX provides the mutex function to create critical sections that enforce exclusive access to an object (a piece of memory) by a single thread.
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