.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
- 在oracle中varchar和varchar2有什么区别？
1.varchar2把所有字符都占两字节处理(一般情况下),varchar只对汉字和全角等字符占两字节,数字,英文字符等都是一个字节:2.VARCHAR2把空串等同于null处理,而varchar仍按 ...
- Android Activity、Service、BroadcastReceiver 的生命周期
Activity.Service.BroadcastReceiver这三个组建是Android开发中最常使用到的组件,在它们的生命周期的各个阶段我们需要针对性的做些事情,了解这些组件的生命周期有利于我 ...
- springboot 1.5.X junit测试
import org.junit.runner.RunWith; import org.springframework.beans.factory.annotation.Autowired; impo ...
- drools7 (二、agenda-group 的使用)
几个关键点: 1. 如果没有指定agenda-group 则默认把所有未指定agenda-group的 rules 都执行一遍 2. 如果指定了agenda-group 使用的时候必须指定该name才 ...
- inotify 与 rsync文件同步实现与问题
首先分别介绍inotify 与 rsync的使用,然后用两者实现实时文件同步,最后说一下这样的系统存在什么样的问题. 1. inotify 这个具体使用网上很多,参考 inotify-tools 命令 ...
- js回到顶部 动画速度 （自己记录）
x=x-20; 设置回到每10s的速度, function gotoTop(){ var x=document.body.scrollTop||document.documentElement.scr ...
- PHP的exec()函数无返回值排查方法[转]
在安全imagemagic时 需要用到 exec很多服务器上安装失败 exec()执行外部命令失败,但没有任何错误信息. exec执行某命令在命令行下没有问题,但是在PHP中就出错.这个问题99.99 ...
- odoo发送信息到微信公众平台、企业微信
目录 odoo发送信息到微信 @(odoo client.message.send_text) odoo发送信息到微信 在odoo平台中进行项目开发的时候有时会用到跟其他平台对接发送信息. 这里我写一 ...
- Win7/Win10下搭建Go语言开发环境
1 下载适合window版本的Go安装包,下载地址http://code.google.com/p/go/downloads/list 2 下载适合window本本的LiteIDE,下载后解压即可使用 ...
- pycharm 激活相关
https://blog.csdn.net/u014044812/article/details/78727496dfasdfasdfdfaasdkjfhaskljdfhkajsdhfljahsdfk ...