clr

Why doesn't the CLR always call value type constructors

久未见 提交于 2019-11-29 22:12:04
I have a question concerning type constructors within a Value type . This question was inspired by something that Jeffrey Richter wrote in CLR via C# 3rd ed, he says (on page 195 - chapter 8) that you should never actually define a type constructor within a value type as there are times when the CLR will not call it. So, for example (well...Jeffrey Richters example actually), I can't work out, even by looking at the IL, why the type constructor is not being called in the following code: internal struct SomeValType { static SomeValType() { Console.WriteLine("This never gets displayed"); }

How does JitIntrinsicAttribute affect code generation?

混江龙づ霸主 提交于 2019-11-29 21:14:59
问题 I was browsing .NET source code and saw this attribute. It says, An attribute that can be attached to JIT Intrinsic methods/properties and according to MSDN: Indicates that a modified method is an intrinsic value for which the just-in-time (JIT) compiler can perform special code generation. This class cannot be inherited. but I had trouble to find how . On what kind of code it performs a special code generation? My main guess is that it mainly uses processor instructions like SIMD, something

How to use unsafe code Unity

心已入冬 提交于 2019-11-29 20:55:10
问题 I want to use c++ code in c# for unity using CLR. The program works properly outside of unity, but inside of engine it gives me an error: "cs0227: unsafe code requires the 'unsafe' command line option to be specified" I am really confused, because the project builds successfully in visual studio (without any errors or warnings). I have " allow unsafe " button activated. using UnityEngine; using System.Collections; using System; using System.Collections.Generic; using System.Linq; using System

Does the .NET CLR Really Optimize for the Current Processor

≯℡__Kan透↙ 提交于 2019-11-29 20:16:33
When I read about the performance of JITted languages like C# or Java, authors usually say that they should/could theoretically outperform many native-compiled applications. The theory being that native applications are usually just compiled for a processor family (like x86), so the compiler cannot make certain optimizations as they may not truly be optimizations on all processors. On the other hand, the CLR can make processor-specific optimizations during the JIT process. Does anyone know if Microsoft's (or Mono's) CLR actually performs processor-specific optimizations during the JIT process?

Implementing C# for the JVM

允我心安 提交于 2019-11-29 18:46:30
Is anyone attempting to implement C# for the JVM? As a Java developer, I've been eyeing C# with envy, but am unwilling to give up the portability and maturity of the JVM, not to mention the diverse range of tools for it. I know there are some important differences between the JVM and CLR but is there anything that is a showstopper? There are very significant differences between the CLR and the JVM. A few examples: Java doesn't have user-defined value types Java generics is completely different to .NET generics Many aspects of C# depend on elements of the framework - delegates etc. You'd need

How to use Font as a variable?

那年仲夏 提交于 2019-11-29 18:17:42
I would have a quick question : What do I have to include into a visual C++/CLR project to be able to use Font^ ? I have tried to create a ref class, something like this : [SerializableAttribute] [ComVisibleAttribute(true)] [TypeConverterAttribute(typeof(FontConverter))] public ref class Font sealed : public MarshalByRefObject, ICloneable, ISerializable, IDisposable (got it from here : http://msdn.microsoft.com/en-us/library/system.drawing.font.aspx?cs-save-lang=1&cs-lang=cpp#code-snippet-1 ) I am working on a project were I have to be able to print something, so my coding is really similiar

.NET 4.0 application on network share causes SecurityException

安稳与你 提交于 2019-11-29 18:07:39
问题 Today I experienced a weird problem while trying to remotely debug an application built for the .NET 4.0 runtime. The application resides on a network share and executed by a remote machine. However the application crashes each time during load because of a SecurityException raised by a permission demand in the System.Configuration.ConfigurationManager.GetSection() method. I have not checked if other permission demands in the base class library also cause a security exception but in all cases

Cannot debug application in release mode even with DebugType=full

こ雲淡風輕ζ 提交于 2019-11-29 17:51:54
问题 We are building a solution for Release, but when attempting to attach using studio 2010 professional, no thread is showing any stack information, nor any breakpoint can be set, etc. The goal is to be able to attach the Visual Studio/JIT Debugger to the running process while having as many optimization benefits as possible. Most of our searches comes down to 'compile with debug:full' and you will be able to debug, but that doesn't seem to be the case, I thing that the JIT optimizes the code in

Fatal Execution Engine Error (79FFEE24) (80131506)

半城伤御伤魂 提交于 2019-11-29 17:09:37
问题 I'm encountering problems with my .NET Framework 3.0 SP1 application. It is a C# winforms application communicating with a COM exe. Randomly either the winforms app or the COM exe crashes without any error message and the event log contains this entry: [1958] .NET Runtime Type: ERROR Computer: CWP-OSL029-01 Time: 11/25/2008 3:14:10 PM ID: 1023 .NET Runtime version 2.0.50727.1433 - Fatal Execution Engine Error (79FFEE24) (80131506) I could not find any useful information on the MS sites. Does

Using boost in CLR

廉价感情. 提交于 2019-11-29 16:45:28
I have problem like this , but answer did not help. I have some classes in h and cpp files(which uses boost), and main cpp file. Main cpp include these h files. I include this in main cpp(like in the answer): namespace boost { struct thread::dummy {}; namespace detail { namespace win32 { struct _SECURITY_ATTRIBUTES: public ::_SECURITY_ATTRIBUTES {}; }; }; }; And got rid of this: Warning 1 warning LNK4248: unresolved typeref token (0100001F) for 'boost.detail.win32._SECURITY_ATTRIBUTES'; image may not run But still get this: The application was unable to start correctly (0xc000007b) What's the