Let’s talk about several situations and solutions when Golang stops running.

Golang is a very popular programming language and is widely used in various systems and fields. During the development process, it is a common situation for Golang to stop running, and understanding the reasons for the stop and how to deal with it is one of the skills that our developers must master. This article will explore several situations and processing methods when Golang stops running.

1. Memory leak

Memory leak is a common reason why Golang stops running. When the program is running, memory needs to be allocated in order to store data and temporary variables. If the program does not release the memory in time after using it, it will cause a system memory leak.

There are many reasons for memory leaks, such as: not closing files in time in the code, using a large number of pointers but not releasing them, etc. Solving the memory leak problem requires developers to carefully analyze the code and pay attention to memory usage.

Handling method:

1. Unreleased memory must be actively released after use.
2. Use the "defer" statement to delay the execution of the function to ensure that the function can be executed.
3. Use "gc (Garbage Collection)" for garbage collection.

2. Deadlock

When multiple goroutines try to wait for each other to release resources at the same time, a deadlock will occur. This will prevent the program from continuing until it is manually ended.

Golang has some built-in atomic types and lock mechanisms, such as mutex locks, read-write locks, and condition variables. When using these locks, care must be taken to avoid deadlock situations.

Processing method:

1. Analyze the lock usage in the code to ensure that the lock can be released in time.
2. Use the "select" statement to ensure that the code will not be blocked while waiting for resources, thereby avoiding deadlock.

3. Program exception

When an exception occurs during program operation, such as memory access out of bounds, division-by-zero error, type assertion error, etc., it will cause the program to stop running. In order to avoid this situation, we need to pay attention to code writing specifications and exception handling.

Processing method:

1. Make sure the data entered by the program is legal.
2. Use "panic" and "recover" statements to handle exceptions.

4. System call failure

In Golang programs, it is often necessary to call the system's API to complete specific tasks. When the system API call fails, it will cause the program to stop running. At this time we need to check the API call and handle it accordingly based on the error message.

Processing method:

1. Check the return value of the API to ensure that the system API call is successful.
2. According to the error information returned by the API, perform corresponding processing, such as printing error information, restarting the program, etc.

Summary:

Writing efficient and stable Golang programs requires us to pay attention to memory leaks, deadlocks, program exceptions, and system API call failures. When writing Golang code, special attention needs to be paid to the prevention and handling of these problems to ensure the stability and reliability of the program during operation.

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