ter. Jeffrey Richter. CLR via C#. 4. Full Coverage of Multicore Programming. CLR via C#. F O U R T H E D I T I O N. prePress t. Microsof ruthenpress.info ChaptER CLR hosting and appDomains. ChaptER Assembly Loading and Reflection. ChaptER Runtime Serialization. Calling Interface Methods via a Nullable Value Type .. C#'s new operator causes the CLR to perform the following steps: 1. Calculate the.
|Language:||English, Spanish, French|
|Distribution:||Free* [*Register to download]|
Short Desciption: This books is Free to download. "CLR Via C# 4th Edition book" is available in PDF Formate. Learn from this free book and enhance your skills. Led by programming expert Jeffrey Richter, a longtime consultant to the Microsoft .NET team - you - Selection from CLR via C#, Fourth Edition [Book]. Конспект по кинге Джеффри Рихтера CLR via C# (RUS). - Nekliukov/CLR-via- C-Sharp-NOTES-RUS. NET Framework на языке C#.pdf. Find file Copy.
This is another benefit of managed code as compared to unmanaged code.
The CLR does, in fact, offer the ability to execute multiple managed applications in a single OS process. Each managed application executes in an AppDomain. By default, every managed EXE file will run in its own separate address space that has just one AppDomain. Safe code is code that is verifiably safe. Unsafe code is allowed to work directly with memory addresses and can manipulate bytes at these addresses. This is a very powerful feature and is typically useful when interoperating with unmanaged code or when you want to improve the performance of a time-critical algorithm.
However, using unsafe code introduces a significant risk: unsafe code can corrupt data structures and exploit or even open up security vulnerabilities. For this reason, the C compiler requires that all methods that contain unsafe code be marked with the unsafe keyword. When the JIT compiler attempts to compile an unsafe method, it checks to see if the assembly containing the method has been granted the System.
Security Permission with the System. If this flag is set, the JIT compiler will compile the unsafe code and allow it to execute. The CLR is trusting this code and is hoping the direct address and byte manipulations do not cause any harm.
If the flag is not set, the JIT compiler throws either a System. InvalidProgramException or a System. VerificationException, preventing the method from executing.
In fact, the whole application will probably terminate at this point, but at least no harm can be done. Note By default, assemblies that load from the local machine or via network shares are granted full trust, meaning that they can do anything, which includes executing unsafe code.
However, by default, assemblies executed via the Internet are not granted the permission to execute unsafe code.
If they contain unsafe code, one of the aforementioned exceptions is thrown. Microsoft supplies a utility called PEVerify.
You may want to consider running PEVerify. You should be aware that verification requires access to the metadata contained in any dependent assemblies. So when you use PEVerify to check an assembly, it must be able to locate and load all referenced assemblies. Because PEVerify uses the CLR to locate the dependent assemblies, the assemblies are located using the same binding and probing rules that would normally be used when executing the assembly.
However, when implementing server-side code such as a Web service, Web form, or stored procedure , your assembly resides on your server. Because no one outside of your company can access the assembly, no one outside of your company can use any tool to see the IL—your intellectual property is completely safe.
It will be difficult for someone to unscramble the names and understand the purpose of each method. The NGen. The reason is because the NGen. This file can be memory-mapped into multiple-process address spaces simultaneously, allowing the code to be shared; not every process needs its own copy of the code. When a setup program invokes NGen.
A new assembly file containing only this native code instead of IL code is created by NGen. The directory name includes the version of the CLR and information denoting whether the native code is compiled for bit or bit versions of Windows.
On the surface, this sounds great! It sounds as if you get all of the benefits of managed code garbage collection, verification, type safety, and so on without all of the performance problems of managed code JIT compilation. However, the reality of the situation is not as rosy as it would first seem. Unfortunately, this is not possible.
This tells the tool to run NGen. Whenever an end user installs a new service pack of the. This causes NGen. For some applications, the reduction in working set size improves performance, so using NGen can be a net win. Due to all of the issues just listed, you should be very cautious when considering the use of NGen.
For server-side applications, NGen. In addition, for most server applications, only one instance of the code is required, so there is no working set benefit. For client applications, NGen. Moreover, if www. This tool analyzes the execution of your application to see what it needs at startup.
Register your book to access additional benefits. Add to cart.
This eBook includes the following formats, accessible from your Account page after download:. EPUB The open industry format known for its reflowable content and usability on supported mobile devices. PDF The popular standard, which reproduces the look and layout of the printed page. This eBook requires no passwords or activation to read. We customize your eBook by discreetly watermarking it with your name, making it uniquely yours. About eBook formats. Dig deep and master the intricacies of the common language runtime, C , and.
NET development. Led by programming expert Jeffrey Richter, a longtime consultant to the Microsoft. Fully updated for. NET Framework 4. NET Framework architecture, runtime environment, and other key topics, including asynchronous programming and the new Windows Runtime Provides extensive code samples in Visual C Features authoritative, pragmatic guidance on difficult development concepts such as generics and threading.