What is gc in linux

In Linux, "gc" usually refers to "Garbage Collection", the abbreviation of garbage collection. Garbage collection solves the problem by automatically detecting memory that is no longer used by the program and automatically releasing it at the appropriate time. The problem of manual memory management is that the garbage collector will track the reference relationships between objects, mark live objects, and then clear unreferenced objects to make them recyclable garbage.

The operating system of this tutorial: Linux5.18.14 system, Dell G3 computer.

In Linux, "gc" usually refers to the abbreviation of "Garbage Collection". Garbage collection is an automatic memory management technology designed to help programmers solve memory management problems.

When developing in a programming language, it is often necessary to manually allocate and release memory to manage the program's memory usage. However, manual memory management may lead to memory leaks, dangling pointers and other problems, causing program instability and waste of memory resources.

Garbage collection solves the problem of manual memory management by automatically detecting memory that is no longer used by the program and automatically releasing it when appropriate. The garbage collector tracks the reference relationships between objects, marks live objects, and then clears unreferenced objects so that they become recyclable garbage.

In Linux, many programming languages ​​have implemented garbage collection mechanisms, such as the garbage collector in Java's JVM (Java Virtual Machine), Python's garbage collector, Ruby's garbage collector, etc. These garbage collectors are responsible for automatically managing the memory allocated to the program, reducing the need for programmers to do explicit memory management.

Garbage collection plays an important role in improving program reliability, reducing the risk of memory leaks, and reducing programming workload.

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