Detailed introduction to multithreaded producer consumer problems in Java

Multi thread producer consumer problem in Java

preface:

In general, I like to ask some thread questions in the interview. The more basic questions are nothing more than deadlock, producer consumer problems, thread synchronization, etc. deadlock has been written in the previous article. Here is the question of more production and more consumption

This is a multi-threaded consumer producer problem in JDK version 1.5 or above. The optimization is to split the synchronized keyword step by step, separate the object monitor, synchronize, and implicitly establish a monitor. This can establish multiple monitors, and the wake-up is also optimized. Previously, if it was synchronized, notifyall(), When only consumers or producers need to be awakened, this notifyall() will awaken all frozen threads, resulting in a waste of resources. Here, only the opposite threads will be awakened. The explanation of the code is all in the source code and can be copied directly.

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