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Currently, I have installed QT In ubuntu. It is easy to install. You only need a few commands. Or search for installation in the software library. Ubuntu already comes with the QT library. You only need to download the QT creator. I also compiled

Write MultithreadingProgramIs a variable locked? Do deadlocks occur when the lock order of several locks is different? Here is a small tool that can test whether your logic is correct.   This is a C ++ command line program with over 500

There are two main methods for transmitting audio. They are commonly known as FM and am. The sound quality of FM is good, and they are stereo, but it has a fatal weakness, that is, the transmission distance is too short, and this is the strength of

Switch the arm to the thumb mode. According to the arm documentation, a jump is completed, and the jump address is stored in the General Register. The seek bit in the address is 1. I have always liked seeing the truth. The simplest thing is to look

Search for pinyin to display Chinese Characters  Recently, as a mobile service project, you can use a computer to manage text messages, thin phone numbers, and text messages for mobile phones ...... when searching for contacts, you can enter

In the previous blog, we analyzed the extremely complex path name search process. If you really don't understand it, use the old method to clarify the relevant data structure first, and then draw a picture on the paper. I believe everyone has

According to the Author: Mr. Han yungunman relives the game "jian Manx man History", which is filled with tears. I want to see Lin Yuexiu under the white cloth when playing xianjian also went down and cried him, but in this game, when Chanel died ...

Like every traditional UNIX system, Linux also uses the system root filesystem: it is directly installed by the kernel in the boot phase, it also has the system initialization script and the most basic system program.   Other file systems are either

After each application instance runs, a process is generated in the current system. Most applications have a visual interface. You can close the program by clicking the close button on the title bar. However, there is no visual interface for many

Http://hi.baidu.com/joyeep/blog/item/d60c9351daabed19367abeaf.html   This is a Windows programming problem.In the first case, the displayed words are normal.Case wm_paint:GDC = beginpaint (hwnd, & PS );Textout (GDC, 0, 0, S, strlen (s ));Endpaint

The purpose of designing dynamic arrays is to eliminate the array restrictions in the C ++ language by using the C ++ template technology, for example, an array cannot be a function parameter or return value (unless a pointer), and an array cannot

There has always been a vague concept, so we use an example to strengthen memory. Linux x86 gcc3.2.3 at&t format Compilation The Code is as follows: Void Fun () { Int A = 'a '; } Void Main () { Int B; Fun (); Return; } Start debugging [Sanool

Start with the data structure driven by sound cards: /* SOC card */struct snd_soc_card {const char * Name; struct device * dev; struct snd_card * snd_card; // create a sound card struct module * owner using snd_card_create in

After talking about this, many people will surely get confused. What we mentioned above is data structures or conceptual things. Where is the real management mechanism for dynamic pages? In other words, how do I allocate the page boxes of each node

In electronic systems and computation, firmware is a firmware that usually controls a variety of electronic devices in a fairly small program or data structure, from hard drives, keyboards, TFT screens or memory cards, to more complex consumer

Chapter 5 of the book "Understanding the Linux kernel in depth" describes kernel synchronization. When the kernel control path must access the shared data structure or enter the critical section, you need to obtain a "Lock" for yourself ". The

I really don't pay much attention to the development of Linux kernel. I took the time to differentiate the concepts of initrd and initramfs early this morning. I finally got a little eye off and did not dare to enjoy it exclusively. We all know that

Kernelinit is an initialization function of a software structure after MMU is enabled. It is responsible for the establishment of the system calldesktable and the establishment of the nk.exeprocess. Of course, it also includes the first time That nk.

I wrote an article about firmware a few days ago. bootloader is an important part of BSP. We all know that the BIOS function is to guide the OS. bootloader is called a boot loader, in the embedded system, bootloader also acts as a boot OS. In the

Framebuffer is the device driver that outputs video data in the memory. framebuffer in Linux is an independent hardware abstraction layer that abstracts display devices into frame buffers, as an image showing the memory, the developer can map the