Shulou(Shulou.com)06/03 Report--

What this article shares with you is about the function of the stack. The editor thinks it is very practical, so I share it with you to learn. I hope you can get something after reading this article.

The function of the stack is that the access speed is faster than the heap, second only to the registers directly located in the CPU, all its data storage or withdrawal can only be carried out at the floating end called the top of the stack, strictly according to the principle of "first in and then out". The elements in the middle of the stack must be removed one by one at the top of the stack.

The purpose of the stack:

In the application of single-chip microcomputer, the stack is a special storage area, the main function is to temporarily store data and addresses, usually used to protect breakpoints and sites.

In the computer field, stack is a concept that can not be ignored, stack is a kind of data structure. A stack is a data structure in which data items are arranged in order, and data items can only be inserted and deleted at one end (called the top of the stack).

A stack is a specific storage area or register that is fixed on one end and floating on the other. The data stored in this storage area is a special data structure.

All data storage or withdrawal can only be carried out at the floating end (called the top of the stack). The elements located in the middle of the data can only be removed from the upper part of the stack (those who enter the stack) one by one. An area in internal memory (random access memory) is opened up as a stack called a software stack; a stack made of registers is called a hardware stack.

Extended data:

The advantage of the stack is that it is faster to access than the heap, second only to registers located directly in the CPU. However, the disadvantage is that the data size and lifetime in the stack must be determined and lack of flexibility.

In addition, stack data cannot be shared between multiple threads or stacks, but multiple variables with equal values within the stack can point to an address. The advantage of the heap is that memory can be allocated dynamically and the lifetime does not have to tell the compiler in advance that Java's garbage collector automatically collects data that is no longer in use. However, the disadvantage is that the access speed is slow due to the dynamic allocation of memory at run time.

The above is what the stack does, and the editor believes that there are some knowledge points that we may see or use in our daily work. I hope you can learn more from this article. For more details, please follow the industry information channel.

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