C# - Garbage Collection



The .NET Framework‘s garbage collector manages the allocation and release of memory for your application. Each time you create a new object, the common language runtime allocates memory for the object from the
managed heap. As long as address space is available in the managed heap, the runtime continues to allocate space for new objects. However, memory is not infinite. Eventually the garbage collector must perform a collection in order to free some memory. The
garbage collector‘s optimizing engine determines the best time to perform a collection, based upon the allocations being made. When the garbage collector performs a collection, it checks for objects in the managed heap that are no longer being used by the
application and performs the necessary operations to reclaim their memory.

时间： 2025-01-17 19:16:20

C# - Garbage Collection的相关文章

[Java] 垃圾回收机制 ( Garbage Collection ) 简介

自动垃圾回收( Automatic Garbage Collection ) 自动垃圾回收,是指在堆(Heap)内存上分辨哪些对象还在被使用,哪些对象没有被使用,并清除没有被使用的对象.所以,这里的垃圾实际上是指,在内存中,无法再被使用没有存在的价值的但还占据内存空间的对象. C 语言的内存分配.回收是需要手动完成的,但在 Java 中,回收内存是由垃圾回收器自动完成的. 垃圾回收分为两步骤:1.标记,2.删除.删除垃圾有两种情况,a. 常规删除,b. 带压缩的删除. 第 1 步. 标记 ( M

Advanced .NET Debugging: Managed Heap and Garbage Collection(转载，托管堆查内存碎片问题解决思路)

原文地址:http://www.informit.com/articles/article.aspx?p=1409801&seqNum=4 Debugging Managed Heap Fragmentation Earlier in the chapter, we described a phenomenon known as heap fragmentation, in which free and busy blocks are arranged and interleaved on th

GC（Garbage Collection）垃圾回收机制

1.在垃圾回收器中,程序员没有执行权,只有通知它的权利. 2.程序员可以通过System.gc().通知GC运行,但是Java规范并不能保证立刻运行. 3.finalize()方法,是java提供给程序员用来释放对象或资源的办法,但是尽量少用. 一.GC的介绍 GC的全称是Garbage Collection (垃圾收集) 在GC中,垃圾所指的是程序在运行过程中,会产生出一些无用的对象,或者说是已经被弃用的对象,而这些对象会占用着一部分的内存空间,如果长时间不去回收这些内存空间,那么最终会导致O

[Java] 垃圾回收 ( Garbage Collection ) 的步骤演示

关于 JVM 垃圾回收机制的基础内容,可参考上一篇博客 垃圾回收机制 ( Garbage Collection ) 简介 上一篇博客,介绍了堆的内存被分为三个部分:年轻代.老年代.永生代.这篇博文将演示这三个部分如何交互,实际也演示了垃圾回收. 1. 首先,所有新创建的对象都会陪分配到年轻代的 Eden 空间,而两个 survior 空间一开始都为空. 下图表示的是运行一段实际后的年轻代内存情况,新创建的对象会被放在 Eden 空间,"from" survior space 里面的数字

Tuning Java Garbage Collection for Spark Applicati

This is a guest post from our friends in the SSG STO Big Data Technology group at Intel. Join us at the Spark Summit to hear from Intel and other companies deploying Spark in production.  Use the code Databricks20 to receive a 20% discount! Spark is

Valid page threshold based garbage collection for solid state drive

A method for garbage collection in a solid state drive (SSD) includes determining whether the SSD is idle by a garbage collection module of the SSD; based on determining that the SSD is idle, determining a victim block from a plurality of memory bloc

垃圾回收(garbage collection)介绍

 垃圾回收用来实现内存的自动管理(automatic management),区别于人工管理(manual management).人工管理内存容易出现的问题: 1)悬垂指针,dangling pointer 2)重复回收,Double free 3)内存泄露,memory leak 历史 垃圾回收的概念及技术由John McCarthy于1959年发明,应用于List语言中.1959年,计算机科学应该还处于探索.萌芽阶段,但这位大神已经发明了垃圾回收,大神就是大神. 策略 目前的垃圾回收策

Java Garbage Collection Basics--转载

原文地址:http://www.oracle.com/webfolder/technetwork/tutorials/obe/java/gc01/index.html Overview Purpose This tutorial covers the basics of how Garbage Collection works with the Hotspot JVM. Once you have learned how the garbage collector functions, lear

java 垃圾回收机制和调优（转）Java Garbage Collection

(转)http://www.cnblogs.com/shudonghe/p/3457990.html 文主要介绍,JVM的组件,自动垃圾收集器是如何工作的,分代垃圾收集器的收集过程,使如何用Visual VM来监视应用的虚拟机,以及JVM中垃圾收集器的种类. 一.JVM架构 1.HotSpot 架构 HotSpot JVM架构支持较强的基本特征和功能,此外还支持高性能和高吞吐率的特性.例如,JVM JIT编译器产生动态优化的代码,亦即,编译器是在Java运行的时候的时候进行优化,并为当然的系统架

【原创】【Android】揭秘 ART 细节 ---- Garbage collection

背景 Dalvik :http://zh.wikipedia.org/wiki/Dalvik%E8%99%9A%E6%8B%9F%E6%9C%BA ART :http://source.android.com/devices/tech/dalvik/art.html 正文 Ian Rogers  在Google IO 2014上讲述了 The ART runtime 的Garbage Collection部分,通过他的讲述,我们可以了解到ART在垃圾回收方面有哪些改进的地方.开门见山,下面我们就