What is multithreading

Thread refers to the actual running unit in the process, which is the smallest running unit in the process, and multi-threading means that there are multiple threads executing at the same time in a process. The advantage of multi-threading is to improve execution efficiency, but It can easily cause deadlock.

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Multi-threading

Thread refers to the actual running unit in the process. It is the smallest unit for operation scheduling in the operating system. In other words, a thread is the smallest unit of execution in a process. Multi-threading refers to the fact that there are multiple execution paths in a process at the same time, that is, threads are executing

Advantages of multi-threading

(1) Use threads to put long-term program tasks into the background for processing

(2) Speed ​​up the running speed of the program

(3) Allow the same program to Different parts are executed concurrently

(4) Using multi-threading can put time-consuming operations in the background and continue executing other operations to improve efficiency

Disadvantages of multi-threading

(1) Because multi-threading needs to open up memory, and thread switching takes time, it will consume a lot of system memory.

(2) The termination of threads will have an impact on the program

(3) Since there is shared data between multiple threads, thread deadlock is prone to occur

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