Allocating Resources from the Managed Heap The CLR requires that all objects be allocated from the managed heap. When a process is initialized, the CLR allocates a region of address space for the managed heap. The CLR also maintains a pointer, which…
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…
Understanding the managed heap   Another common problem faced by many Unity developers is the unexpected expansion of the managed heap. In Unity, the managed heap expands much more readily than it shrinks. Furthermore, Unity’s garbage collection stra…
摘要 : NetExt中有两个比较常用的命令可以用来分析heap上面的对象. 一个是!wheap, 另外一个是!windex. !wheap 这个命令可以用于打印出heap structure信息. heap 上 object汇总后的信息. 这个命令也可以按照一些条件过滤出objects, 不过执行速度比较慢. 在这一点上, 更推荐!windex.!windex是一个非常常用的命令. 这个命令可以用来查找heap上面实现某个interface, 继承某个abstract class 或者clas…
AppDomain Unloading To unload an AppDomain, you call AppDomain’s Unload static method.This call causes the CLR to perform a lot of actions to gracefully unload the specified AppDomain: The CLR suspends all threads in the process that have ever execut…
前言 在阅读这篇文章:Announcing Net Core 3 Preview3的时候,我看到了这样一个特性: Docker and cgroup memory Limits We concluded that the primary fix is to set a GC heap maximum significantly lower than the overall memory limit as a default behavior. In retrospect, this choice…
JVM的GC分为两个主要部分,第一部分是判断对象是否已死(堆内存的垃圾回收占主要部分,方法区(metaspace)的内存回收在最新的官方文档中未给出详细解释,暂时不做讨论范围),第二部分是对内存区进行回收用于下次的内存分配. 一.判断对象是否已死 JDK 8的VM实现是Hotspot虚拟机,它采用的是可达性分析算法. a.引用计数算法 给每个对象添加一个引用计数器,每当有一个地方引用它时,计数器值就加1:当引用失效时计数器的值就减1.但在VM中它无法解决的一个问题就是循环引用问题(也是    …
原文链接: https://blogs.msdn.microsoft.com/abhinaba/2009/03/02/back-to-basics-generational-garbage-collection/ This post is Part 8 in the series of posts on Garbage Collection (GC). Please see the index here. One of the primary disadvantage discussed in…
在做ssh项目练习的时候出现问题: org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role 原因在于hibernate的懒加载出现的问题.在多方中的一方的配置没有指定加载方式,而且一方中的多方是懒加载,因此在获取一方的时候一方是获取到了,但是再获取多方的时候session已经关闭了,这时候会获取不到多方信息,因此报错. 解决办法: 将一方中的多方(one-to-many…
CLR(Common Language Runtime)公共语言进行时是一个可由多种编程语言使用的“进行时”. 将源代码编译成托管模块 可用支持CLR的任何语言创建源代码文件,然后用对应的编译器检查语法和分析源代码.无论选择哪个编译器,结果都是托管模块(managed module).托管模块是标准的32位Microsoft Windows可移植执行体(PE32)文件,或者是标准的64位Windows可移植执行体(PE32+)文件,他们都需要CLR才能执行.(注:PE是Portable Exec…