.NET：CLR via C# A Brief Look at Metadata
基础知识
A managed PE file has four main parts: the PE32(+) header, the CLR header, the metadata, and the IL. The PE32(+) header is the standard information that Windows expects. The CLR header is a small block of information that is specific to modules that require the CLR (managed modules). The header includes the major and minor version number of the CLR that the module was built for: some flags, a MethodDef token (described later) indicating the module’s entry point method if this module is a CUI, GUI, or Windows Store executable, and an optional strong-name digital signature. Finally, the header contains the size and offsets of certain metadata tables contained within the module.
The metadata is a block of binary data that consists of several tables. There are three categories of tables: definition tables, reference tables, and manifest tables. T
Metadata table entries are also created as the compiler detects the types, fields, methods, properties, and events that the source code references. The metadata created includes a set of reference tables that keep a record of the referenced items.
示例
C# 代码
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks; namespace Main
{
class Program
{
static void Main(string[] args)
{
Console.WriteLine(Type.GetType("A.ClassA, A"));
}
} public class ClassMain
{
public string Property { get; set; } public void Method(string msg)
{
Console.WriteLine(msg);
}
}
}
元数据
===========================================================
ScopeName : Main.exe
MVID : {8C836651-F32E-4341-B87A-3479E4412916}
===========================================================
Global functions
------------------------------------------------------- Global fields
------------------------------------------------------- Global MemberRefs
------------------------------------------------------- TypeDef #1 (02000002)
-------------------------------------------------------
TypDefName: Main.Program (02000002)
Flags : [NotPublic] [AutoLayout] [Class] [AnsiClass] [BeforeFieldInit] (00100000)
Extends : 01000001 [TypeRef] System.Object
Method #1 (06000001) [ENTRYPOINT]
-------------------------------------------------------
MethodName: Main (06000001)
Flags : [Private] [Static] [HideBySig] [ReuseSlot] (00000091)
RVA : 0x00002050
ImplFlags : [IL] [Managed] (00000000)
CallCnvntn: [DEFAULT]
ReturnType: Void
1 Arguments
Argument #1: SZArray String
1 Parameters
(1) ParamToken : (08000001) Name : args flags: [none] (00000000) Method #2 (06000002)
-------------------------------------------------------
MethodName: .ctor (06000002)
Flags : [Public] [HideBySig] [ReuseSlot] [SpecialName] [RTSpecialName] [.ctor] (00001886)
RVA : 0x00002063
ImplFlags : [IL] [Managed] (00000000)
CallCnvntn: [DEFAULT]
hasThis
ReturnType: Void
No arguments. TypeDef #2 (02000003)
-------------------------------------------------------
TypDefName: Main.ClassMain (02000003)
Flags : [Public] [AutoLayout] [Class] [AnsiClass] [BeforeFieldInit] (00100001)
Extends : 01000001 [TypeRef] System.Object
Field #1 (04000001)
-------------------------------------------------------
Field Name: <Property>k__BackingField (04000001)
Flags : [Private] (00000001)
CallCnvntn: [FIELD]
Field type: String
CustomAttribute #1 (0c000001)
-------------------------------------------------------
CustomAttribute Type: 0a000008
CustomAttributeName: System.Runtime.CompilerServices.CompilerGeneratedAttribute :: instance void .ctor()
Length: 4
Value : 01 00 00 00 > <
ctor args: () Method #1 (06000003)
-------------------------------------------------------
MethodName: get_Property (06000003)
Flags : [Public] [HideBySig] [ReuseSlot] [SpecialName] (00000886)
RVA : 0x0000206c
ImplFlags : [IL] [Managed] (00000000)
CallCnvntn: [DEFAULT]
hasThis
ReturnType: String
No arguments.
CustomAttribute #1 (0c000006)
-------------------------------------------------------
CustomAttribute Type: 0a000008
CustomAttributeName: System.Runtime.CompilerServices.CompilerGeneratedAttribute :: instance void .ctor()
Length: 4
Value : 01 00 00 00 > <
ctor args: () Method #2 (06000004)
-------------------------------------------------------
MethodName: set_Property (06000004)
Flags : [Public] [HideBySig] [ReuseSlot] [SpecialName] (00000886)
RVA : 0x00002083
ImplFlags : [IL] [Managed] (00000000)
CallCnvntn: [DEFAULT]
hasThis
ReturnType: Void
1 Arguments
Argument #1: String
1 Parameters
(1) ParamToken : (08000002) Name : value flags: [none] (00000000)
CustomAttribute #1 (0c000007)
-------------------------------------------------------
CustomAttribute Type: 0a000008
CustomAttributeName: System.Runtime.CompilerServices.CompilerGeneratedAttribute :: instance void .ctor()
Length: 4
Value : 01 00 00 00 > <
ctor args: () Method #3 (06000005)
-------------------------------------------------------
MethodName: Method (06000005)
Flags : [Public] [HideBySig] [ReuseSlot] (00000086)
RVA : 0x0000208c
ImplFlags : [IL] [Managed] (00000000)
CallCnvntn: [DEFAULT]
hasThis
ReturnType: Void
1 Arguments
Argument #1: String
1 Parameters
(1) ParamToken : (08000003) Name : msg flags: [none] (00000000) Method #4 (06000006)
-------------------------------------------------------
MethodName: .ctor (06000006)
Flags : [Public] [HideBySig] [ReuseSlot] [SpecialName] [RTSpecialName] [.ctor] (00001886)
RVA : 0x00002096
ImplFlags : [IL] [Managed] (00000000)
CallCnvntn: [DEFAULT]
hasThis
ReturnType: Void
No arguments. Property #1 (17000001)
-------------------------------------------------------
Prop.Name : Property (17000001)
Flags : [none] (00000000)
CallCnvntn: [PROPERTY]
hasThis
ReturnType: String
No arguments.
DefltValue:
Setter : (06000004) set_Property
Getter : (06000003) get_Property
0 Others TypeRef #1 (01000001)
-------------------------------------------------------
Token: 0x01000001
ResolutionScope: 0x23000001
TypeRefName: System.Object
MemberRef #1 (0a000007)
-------------------------------------------------------
Member: (0a000007) .ctor:
CallCnvntn: [DEFAULT]
hasThis
ReturnType: Void
No arguments. TypeRef #2 (01000002)
-------------------------------------------------------
Token: 0x01000002
ResolutionScope: 0x23000001
TypeRefName: System.Runtime.Versioning.TargetFrameworkAttribute
MemberRef #1 (0a000001)
-------------------------------------------------------
Member: (0a000001) .ctor:
CallCnvntn: [DEFAULT]
hasThis
ReturnType: Void
1 Arguments
Argument #1: String TypeRef #3 (01000003)
-------------------------------------------------------
Token: 0x01000003
ResolutionScope: 0x23000001
TypeRefName: System.Diagnostics.DebuggableAttribute
MemberRef #1 (0a000002)
-------------------------------------------------------
Member: (0a000002) .ctor:
CallCnvntn: [DEFAULT]
hasThis
ReturnType: Void
1 Arguments
Argument #1: ValueClass DebuggingModes TypeRef #4 (01000004)
-------------------------------------------------------
Token: 0x01000004
ResolutionScope: 0x01000003
TypeRefName: DebuggingModes TypeRef #5 (01000005)
-------------------------------------------------------
Token: 0x01000005
ResolutionScope: 0x23000001
TypeRefName: System.Runtime.CompilerServices.CompilationRelaxationsAttribute
MemberRef #1 (0a000003)
-------------------------------------------------------
Member: (0a000003) .ctor:
CallCnvntn: [DEFAULT]
hasThis
ReturnType: Void
1 Arguments
Argument #1: I4 TypeRef #6 (01000006)
-------------------------------------------------------
Token: 0x01000006
ResolutionScope: 0x23000001
TypeRefName: System.Runtime.CompilerServices.RuntimeCompatibilityAttribute
MemberRef #1 (0a000004)
-------------------------------------------------------
Member: (0a000004) .ctor:
CallCnvntn: [DEFAULT]
hasThis
ReturnType: Void
No arguments. TypeRef #7 (01000007)
-------------------------------------------------------
Token: 0x01000007
ResolutionScope: 0x23000001
TypeRefName: System.Type
MemberRef #1 (0a000005)
-------------------------------------------------------
Member: (0a000005) GetType:
CallCnvntn: [DEFAULT]
ReturnType: Class System.Type
1 Arguments
Argument #1: String TypeRef #8 (01000008)
-------------------------------------------------------
Token: 0x01000008
ResolutionScope: 0x23000001
TypeRefName: System.Console
MemberRef #1 (0a000006)
-------------------------------------------------------
Member: (0a000006) WriteLine:
CallCnvntn: [DEFAULT]
ReturnType: Void
1 Arguments
Argument #1: Object
MemberRef #2 (0a000009)
-------------------------------------------------------
Member: (0a000009) WriteLine:
CallCnvntn: [DEFAULT]
ReturnType: Void
1 Arguments
Argument #1: String TypeRef #9 (01000009)
-------------------------------------------------------
Token: 0x01000009
ResolutionScope: 0x23000001
TypeRefName: System.Runtime.CompilerServices.CompilerGeneratedAttribute
MemberRef #1 (0a000008)
-------------------------------------------------------
Member: (0a000008) .ctor:
CallCnvntn: [DEFAULT]
hasThis
ReturnType: Void
No arguments. Signature #1 (0x11000001)
-------------------------------------------------------
CallCnvntn: [LOCALSIG]
1 Arguments
Argument #1: String Assembly
-------------------------------------------------------
Token: 0x20000001
Name : Main
Public Key :
Hash Algorithm : 0x00008004
Version: 0.0.0.0
Major Version: 0x00000000
Minor Version: 0x00000000
Build Number: 0x00000000
Revision Number: 0x00000000
Locale: <null>
Flags : [none] (00000000)
CustomAttribute #1 (0c000002)
-------------------------------------------------------
CustomAttribute Type: 0a000001
CustomAttributeName: System.Runtime.Versioning.TargetFrameworkAttribute :: instance void .ctor(class System.String)
Length: 73
Value : 01 00 1a 2e 4e 45 54 46 72 61 6d 65 77 6f 72 6b > .NETFramework<
: 2c 56 65 72 73 69 6f 6e 3d 76 34 2e 35 01 00 54 >,Version=v4.5 T<
: 0e 14 46 72 61 6d 65 77 6f 72 6b 44 69 73 70 6c > FrameworkDispl<
: 61 79 4e 61 6d 65 12 2e 4e 45 54 20 46 72 61 6d >ayName .NET Fram<
: 65 77 6f 72 6b 20 34 2e 35 >ework 4.5 <
ctor args: (".NETFramework,Version=v4.5") CustomAttribute #2 (0c000003)
-------------------------------------------------------
CustomAttribute Type: 0a000002
CustomAttributeName: System.Diagnostics.DebuggableAttribute :: instance void .ctor(value class DebuggingModes)
Length: 8
Value : 01 00 07 01 00 00 00 00 > <
ctor args: ( <can not decode> ) CustomAttribute #3 (0c000004)
-------------------------------------------------------
CustomAttribute Type: 0a000003
CustomAttributeName: System.Runtime.CompilerServices.CompilationRelaxationsAttribute :: instance void .ctor(int32)
Length: 8
Value : 01 00 08 00 00 00 00 00 > <
ctor args: (8) CustomAttribute #4 (0c000005)
-------------------------------------------------------
CustomAttribute Type: 0a000004
CustomAttributeName: System.Runtime.CompilerServices.RuntimeCompatibilityAttribute :: instance void .ctor()
Length: 30
Value : 01 00 01 00 54 02 16 57 72 61 70 4e 6f 6e 45 78 > T WrapNonEx<
: 63 65 70 74 69 6f 6e 54 68 72 6f 77 73 01 >ceptionThrows <
ctor args: () AssemblyRef #1 (23000001)
-------------------------------------------------------
Token: 0x23000001
Public Key or Token: b7 7a 5c 56 19 34 e0 89
Name: mscorlib
Version: 4.0.0.0
Major Version: 0x00000004
Minor Version: 0x00000000
Build Number: 0x00000000
Revision Number: 0x00000000
Locale: <null>
HashValue Blob:
Flags: [none] (00000000) User Strings
-------------------------------------------------------
70000001 : (11) L"A.ClassA, A" Coff symbol name overhead: 0
===========================================================
===========================================================
===========================================================
.NET：CLR via C# A Brief Look at Metadata的更多相关文章
- 第一节：CLR寄宿
本系列文章来自 CLR VIA C# .NET FrameWork在Microsoft Windows平台的顶部运行.这意味着.NET必须用Windows可以理解的技术来构建.首先,所有的托管模块和 ...
- 解决“ 故障模块名称： clr.dll ”
错误内容: 微软的错误说明:http://support.microsoft.com/kb/2640103/zh-cn 类似下面的错误: 错误应用程序名称:xxx.exe,版本: 1.0.0.0,时间 ...
- CLR via C#读书笔记一：CLR的执行模型
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 ...
- .NET：CLR via C# Compute-Bound Asynchronous Operations
线程槽 使用线程池了以后就不要使用线程槽了,当线程池执行完调度任务后,线程槽的数据还在. 测试代码 using System; using System.Collections.Generic; us ...
- .NET：CLR via C# The CLR’s Execution Model
The CLR’s Execution Model The core features of the CLR memory management. assembly loading. security ...
- [C#] 类型学习笔记一：CLR中的类型，装箱和拆箱
在学习.NET的时候,因为一些疑问,让我打算把.NET的类型篇做一个总结.总结以三篇博文的形式呈现. 这篇博文,作为三篇博文的第一篇,主要探讨了.NET Framework中的基本类型,以及这些类型一 ...
- 异常信息：CLR无法从COM 上下文0x645e18 转换为COM上下文0x645f88，这种状态已持续60秒。拥有目标上下文/单元的线程很有可能执行的是非泵式等待或者在不发送 Windows 消息的
异常原因: 1.写了一个死循环,这个可能性最大. 2.进行大数据量的运算,导致假死状况. 解决办法:Debug -> Exceptions -> Managed Debug Assista ...
- .NET：CLR via C# User-Mode Constructs
The CLR guarantees that reads and writes to variables of the following data types are atomic: Boolea ...
- .NET：CLR via C# Primitive Thread Synchronization Constructs
User-Mode Constructs The CLR guarantees that reads and writes to variables of the following data typ ...
随机推荐
- 转58同城 mysql规范
这里面都是一些很简单的规则,看似没有特别大的意义,但真实的不就是这么简单繁杂的工作吗? 军规适用场景:并发量大.数据量大的互联网业务 军规:介绍内容 解读:讲解原因,解读比军规更重要 一.基础规范 ( ...
- Android 客户端 okhttp3 与服务器之间的双向验证
[原文]https://blog.csdn.net/leng_wen_rou/article/details/58596142 本篇是Android 客户端基于okhttp3的网络框架 和后台服务器之 ...
- hmm和Veterbi算法（一）
只是略微的看了些,有点感觉,还未深入,做个记录. 参考: 隐马尔可夫 (HMM).前 / 后向算法.Viterbi 算法 再次总结 谁能通俗的讲解下 viterbi 算法? 数学之美第二版的第 26 ...
- ESLint处理
当有遇到下划线的问题,会提示有问题,无法通过检测 需要在代码的前面加入以下代码就可以解决,地址是:https://stackoverflow.com/questions/44126983/eslint ...
- Music in Car CF 746F
题目:http://codeforces.com/problemset/problem/746/F 先感叹一下题目之长! 一些测试样例在后面给出. 题目大意: Sasha 去工作的路上喜欢听歌,途中经 ...
- liniux Crontab 的重启和设置
重启crontab,service cron restart 05 01 * * * /usr/local/php/bin/php FILE 10,30,50 * * * * /usr/local/p ...
- 决策树算法（Bagging与随机森林）
Bagging算法: 将训练数据集进行N次Bootstrap采样得到N个训练数据子集,对每个子集使用相同的算法分别建立决策树,最终的分类(或回归)结果是N个决策树的结果的多数投票(或平均). 其中,B ...
- Java与GIS的联系
Java与GIS的联系 地理信息系统是70年代初发展起来的一门新兴的边缘学科. 由于GIS在数据采集与输入.空间数据管理.地图提取.自动制图.数字地形分析.数据输出等方面具有强大而又独特的功能 ...
- 【贪心】【后缀自动机】Gym - 101466E - Text Editor
题意:给你两个串A,B,以及一个整数K,让你找到B的一个尽可能长的前缀,使得其在A串中出现的次数不小于K次. 对A串建立后缀自动机,然后把B串放在上面跑,由于每到一个结点,该结点endpos集合的大小 ...
- 监控 Linux 系统的 7 个命令行工具
监控 Linux 系统的 7 个命令行工具: " 深入 关于Linux最棒的一件事之一是你能深入操作系统,来探索它是如何工作的,并寻找机会来微调性能或诊断问题.这里有一些基本的命令行工具,让 ...