1. weight introduction in multi-threaded programming, synchronization is the key to ensuring that concurrent execution threads share resources safely. the lock and synchronization mechanism help solve the problems of concurrent access and prevent data competition, thereby ensuring data integrity and consistency. this article will explore in-depth lock and synchronization mechanisms in multi-threaded programming to help you understand its principles and applications. locking is a synchronization mechanism used to control access to shared resources. it acts as a doorman and allows only one thread to access shared resources at a time, thereby preventing data competition and corruption. 5 software, e.g. 30 people

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