Lessons on development of 6. C/C++ applications (single file)The course is devoted to the creation of 6. C/C++ language, and is intended for Windows developers who use the Visual Studio 2. Developers working with other 6. The course will consider all steps in creating a new safe 6. The course is composed of 2. Questions such as estimation of cost incurred in moving to 6. The authors of the course: candidate of physicomathematical sciences Andrey Nikolaevich Karpov; candidate of technical sciences Evgeniy Alexandrovich Ryzhkov. The authors are involved in maintaining the quality of 6. PVS- Studio static code analyzer for verifying the code of resource- intensive applications. The right holder of the course is OOO . The contents of the course. Lesson 0. 1. What 6. Lesson 0. 2. Support of 3. Lesson 0. 3. Porting code to 6. The pros and cons. Lesson 0. 4. Creating the 6. Lesson 0. 5. Building a 6. Lesson 0. 6. Errors in 6. Lesson 0. 7. The issues of detecting 6. Lesson 0. 8. Static analysis for detecting 6. Lesson 0. 9. Magic numbers. Lesson 1. 0. Functions with variable number of arguments. Lesson 1. 1. Shift operations. Lesson 1. 2. Virtual functions. Lesson 1. 3. Address arithmetic. Lesson 1. 4. Changing an array's type. Lesson 1. 5. Pointer packing. Lesson 1. 6. Memsize- types in unions. Lesson 1. 7. Mixed arithmetic. With 28 new chapters, the third edition of The Practice of System and Network Administration innovates yet again! Revised with thousands of updates and clarifications. In computing, an optimizing compiler is a compiler that tries to minimize or maximize some attributes of an executable computer program. The most common requirement. This manual is part of the SBCL software system. See the README file for more information. This manual is largely derived from the manual for the CMUCL system. When: 6-8 February 2017; What: Sweden's largest developer conference; Where: Stockholm Waterfront Conference; Contact: jfokus2017 (a) jfokus.se. Dreamtech Press has been providing quality learning to a wide spectrum of readers across India. Imbibing the spirit of Knowledge, Creativity, and Experience. Oracle offers a comprehensive and fully integrated stack of cloud applications and platform services. Lesson 1. 8. Storage of integer values in double. Lesson 1. 9. Serialization and data interchange. Lesson 2. 0. Data alignment. Lesson 2. 2. Overloaded functions. Lesson 2. 3. Growth of structures' sizes. Lesson 2. 4. Phantom errors. Lesson 2. 5. Working with patterns of 6. Lesson 2. 6. Optimization of 6. Lesson 2. 7. Peculiarities of creating installers for a 6. Lesson 2. 8. Estimating the cost of 6. C/C++ applications. The course's duration: the course requires that you study each of the 2. The total time study time for all material is about 1. You may open all the lessons in one file (the print version as well). This single file may be printed with the help of a common printer, or converted into a pdf- file with the help of a pdf- printer. Lesson 1. What 6. At the time of writing the course, there are two popular 6. IA6. 4 and Intel 6. IA- 6. 4 is a 6. 4- bit microprocessor architecture developed by Intel and Hewlett Packard companies together. It is implemented in Itanium and Itanium 2 microprocessors. A virtual method table (VMT), virtual function table, virtual call table, dispatch table, vtable, or vftable is a mechanism used in a programming language to support. As a professional Java programmer, I've been trying to understand - why the hate toward Java for modern web applications? I've noticed a trend that out of modern day. Eclipse is probably best known as a Java IDE, but it is more: it is an IDE framework, a tools framework, an open source project, a community, an eco-system, and a. Compiles a Java source tree. The source and destination directory will be recursively scanned for Java source files to compile. To learn more about the architecture IA- 6. Wikipedia article . There are many variants of its name, and it causes some confusion, but all these names mean the same thing: x. AA- 6. 4, Hammer Architecture, AMD6. Yamhill Technology, EM6. T, IA- 3. 2e, Intel 6. To learn how so many names appeared see the article in Wikipedia: . Within the scope of this course we will consider only Intel 6. AMD6. 4) architecture, as the most popular among applied Windows software developers. Accordingly, when we mention Windows operating system, we will mean its 6. Intel 6. 4 architecture. For example: Windows XP Professional x. Edition, Windows Vista x. Windows 7 x. 64. The program model Intel 6. Windows is called Win. Intel 6. 4 architecture. The information given here is based on the first volume of the documentation . Application Programming. It adds the 6. 4- bit address space, and extends resources to support higher performance of recompiled 6. The architecture supports obsolete 1. The need for a 6. First of all, these are high- performance servers, data managers, CAD and, of course, games. These applications will gain great benefits from the 6. Having few registers available in the obsolete x. The increased number of registers provides the necessary performance boost, required for many applications. Let us point out the main advantages of the architecture x. Nearly all modern operating systems have versions for Intel 6. For example, Microsoft ships Windows XP x. Large UNIX developers also ship 6. Linux Debian 3. 5 x. But it does not mean that the whole code of such a system is 6. Some parts of the operating system, and many applications may well remain 3. Intel 6. 4 provides backward compatibility. Thus, the 6. 4- bit version of Windows uses a special mode Wo. W6. 4 (Windows- on- Windows 6. Address space. Although a 6. Ebytes of memory (2^6. Win. 64 now supports only 1. Tbytes (2^4. 4). There are reasons for this; contemporary processors can provide access only to one Tbyte (2^4. The architecture (but not the hardware part) can extend this space up to 4 Pbytes (2^5. Besides the limitations described above, the size of memory available in every particular version of the 6. Windows, depends upon Microsoft's own commercial reasoning. Different Windows versions have different limitations which are illustrated in the table. Table 1 - The amounts of memory supported in different Windows versions. Win. 64 program model. Like in Win. 32, the size of a page in Win. Kbytes. The first 6. Kbytes of the address space are never displayed, so the lowest correct address is 0x. Unlike Win. 32, system DLL's take more than 4 Gbytes. Compilers for Intel 6. This allowed the Win. In Win. 32, you may use various conventions: . In Win. 64, there is only one calling convention. Here is an example of how four arguments of integer type are passed through registers: RCX: the first argument. RDX: the second argument. R8: the third argument. R9: the fourth argument. The arguments following the first four integers are passed through the stack. To pass float arguments XMM0- XMM3 registers are used as well as the stack. The difference in the calling conventions makes it impossible to use both 6. In other words, if an application has been compiled for the 6. DLL) being used must also be 6. Passing parameters through registers is one of the innovations that make 6. You may achieve an additional performance gain using 6. We will tell you about this in the next lesson. The course authors: Andrey Karpov (karpov@viva. Evgeniy Ryzhkov (evg@viva. The right holder of the course . The company develops software in the sphere of source program code analysis. The company's site: http: //www. Lesson 2. Support of 3. Windows environment. Before we start discussing the topic of developing 6. Windows versions, with 3. Backward compatibility is arranged through the mechanisms implemented in Wo. W6. 4. Wo. W6. 4 (Windows- on- Windows 6. Windows operating system, which allows you to execute 3. Windows. The Wo. W6. Indirect expenses. Different processor architectures have a bit different Wo. W6. 4. For example, the 6. Windows version developed for Intel Itanium 2 processor, employs Wo. W6. 4 to emulate x. This emulation is rather resource- intensive in comparison to Wo. W6. 4 for Intel 6. Wo. W6. 4 on Intel 6. AMD6. 4 / x. 64) does not require instruction emulation. In this case the Wo. W6. 4 subsystem emulates only the 3. Windows API. In some places this layer is thin, in others a bit thicker. For an average program, you may expect 2% performance penalty because of this layer. For some programs, it can be larger. Two per cent is not very much, but keep in mind that 3. Windows than in the 3. Compilation of 6. Wo. W6. 4, but also gives you an additional performance gain. This is explained by architectural modifications in the microprocessor, such as an increased number of general- purpose registers. For an average program, you may expect a 5- 1. Benefits of the 6. Because of the Wo. W6. 4 layer, 3. 2- bit programs are less efficient in the 6. However, simple 3. Maybe you know that a program built with the switch . Well, the same 3. Gbytes of memory (in practice it is usually about 3. Gbytes). Redirections. The Wo. W6. 4 subsystem isolates 3. It helps to keep 3. For example, a 3. DLL file from the catalogue . To avoid this, the Wo. W6. 4 subsystem redirects the access from the folder . This redirection helps you avoid compatibility errors because the 3. DLL file created to work with 3. To learn more about the mechanisms of file system and register redirection see MSDN section ? Is there a way to evade this limitation? It is impossible to load a 3. DLL from a 6. 4- bit process, and execute its code. It is impossible due to the design of 6. It is impossible fundamentally. And no tricks and undocumented means will help you. To do this you will have to load and initialize Wo. W6. 4, not to mention the kernel structures. Actually, it means that a 6. This topic is described more thoroughly in the post . The only thing we can recommend is to create a surrogate process, and work with it through the COM technology. You may read about it in the article . You may do it specifying the flag LOAD. Of course it will be a very slow process, but the first steps in this direction have been already made. Many administrators know about a relatively new installation and operation mode of the server version of the operating system, called Server Core. It is that very mode the participants of . One of the reasons that adherents of using Linux on servers referred to was the capability to install the server operating system without graphical interface (GUI). But here, there is such a capability in Windows Server too. Now, if you install the system in this mode, you will get only the command line without user interface. This capability (Server Core installation), appeared in Windows Server 2. Yet in Windows Server 2. R2 there is another innovation that brings the 6. Support of 3. 2- bit applications is now optional and you may enable or disable it when installing Windows Server 2. R2 (Server Core). Moreover, this option is disabled by default. So when trying to launch a 3. Server Core mode, you will get a message telling you that it is impossible. Of course you may add 3. Server. Core- WOW6. In the usual (Full Installation) mode, execution of 3. Server Core. The tendency is obvious. It will be more and more rational to create 6. Additional information. Alexey Pahunov's Russian blog is also a very interesting source of information on Wo. W6. 4: http: //blog. Alexey is a worker for the Microsoft Company, and he personally participates in developing the Wo. W6. 4 subsystem. The course authors: Andrey Karpov (karpov@viva. Evgeniy Ryzhkov (evg@viva. The rightholder of the course .
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