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The interrupt subsystem of Linux kernel (a): a review

an interrupt event occurs, requests the processing of the CPU system via an electrical signal on the IRQ request line. The peripheral IRQ request line is too many, the CPU needs a small partner to help him, this is the interrupt controller. The Interrupt controller is a bridge that connects peripheral interrupt systems and CPU systems. Depending on how much the peripheral IRQ request line is, the Interrupt controller can cascade. The main function of the CPU is the operation, so the CPU does no

Calling Delphi-written DLLs in Java

achieve. public static void Main (string[] args) {Create the object and invoke the native method inside.HelloWorld HW = new HelloWorld ();Hw.printtext ();} } After the class finishes compiling, the next thing is solved by Delphi. We run Delphi after the new DLL project: File->new->other, and then select the DLL in the new tab The Wizard creates a new project,We select a folder to save the projectAfter saving the project, we need to download Jni.pas t

VBS Programming Tutorial (2nd article) _vbs

use the keyword "Const" (the keyword means that the system defines a word that has special functions, cannot be used as a variable name or a constant name), and the format is: const constant NAME = constant value. For example: Const PI=3.1415926 Const name= "Memory Fragment" So we've defined two constants, pi, and name, and in general, the constant name is all capitalized, but it doesn't have to be the same as you like.It is a good practice to define a number of values that do not need to b

COCO2DX C + + HTTP implementation

"); }}else{Ccmessagebox ("Download or no file download", "warm Tip"); } break; Default:break; }}3. Implementing thread classes and callback settings method to start thread int Helloworld::threadstart () {pthread_mutex_init (g_downloadmutex, NULL); int errcode=0; pthread_t Th_curldown; Thread initialization do {pthread_attr_t tattr; Errcode=pthread_attr_init (AMP;TATTR); Cc_break_if (errcode!=0); Errcode=pthread_attr_setdetachstate (tattr, pthr

Aggregate class and literal constant class

it cannot contain the Return Statement ), it also meets the requirements of the constexpr function (meaning that the only executable statement it can have is the Return Statement ). Based on these two points, we can see that the constexpr constructor body should be empty in general. We can declare a constexpr using the pre-Keyword: class Debug{public: constexpr Debug(bool b=true):hw(b),io(b),other(b) {} constexpr Debug(bool h,bool i,bool o):

HDU-1430-prime number

Question link: Http://acm.hdu.edu.cn/showproblem.php? PID = 1, 1431 I have done this before and will not do it again, The idea is to directly launch brute-force attacks. Input A = 5 B = 500000000 to get the maximum value of 9989899. Test code (timeout code) # Include # Include Int main (void){Int prime (int n );Int HW (int n );Int A, B;While (scanf ("% d", A, B) = 2){Int I;For (I = A; I {If (HW (I) prime

Detailed description of BMP Trojan

file contains 54 bytes. In short, it contains the length, width, digits, file size, and data area length of the BMP file, we only need to add the corresponding BMP file header before the file header of the EXE file (of course, the data in the BMP file header must meet the size of the EXE file), so that we can cheat IE to download the BMP file, at the beginning, we tried JPG files and found that if the file header is incorrect, ie will not download the file.CodeAs follows: Program exe2bmp; U

Spring interview notes)

= null; Public void afterPropertiesSet (){Msg = "Hello to the world !";Date = new Date ();}......} When all attributes of this Bean are set by BeanFactory of Spring, the afterPropertiesSet () method is automatically called to initialize the Bean, you do not need to specify the init-method attribute in the configuration file. Iii. Bean callThere are three ways to obtain and call the Bean:1. Use BeanWrapperHelloWorld hw = new HelloWorld ();BeanWrapper

Process/File View of the Android Camera Subsystem

636/system/lib/libhardware_legacy.so 40587000-40588000rw-p 00005000 00:11 636/system/lib/libhardware_legacy.so 4059c000-405d4000r-xp 00000000 655/system/lib/libcameraservice. so 405d4000-405d8000r -- p 00037000 655/system/lib/libcameraservice. so 405d8000-405d9000rw-p 0003b000 655/system/lib/libcameraservice. so 405d9000-405dc000r-xp 00000000 582/system/lib/libcamera_metadata.so 405dc000-405dd000r -- p 00002000 582/system/lib/libcamera_metadata.so 405dd000-405de000rw-p 00003000 00:11 582/sy

JavaScript dynamic scaling + fading fade _javascript tips

[' dcdr ')); } } function define (ID, a, b, A2, A3) { if (id = = "-") { A-= b; if (a a = A2; } }else { A + b; If (a >= A3) { A = A3; } } return A; } Shrink or enlarge function Suodi (opt) { If the speed is greater than 1, continue dividing by s, or equal to 1. Speed = speed > 1? Speed * 0.862:1; Get height var hw = define (OPT, $ (' tmp '). ClientHeight, speed, speed, 300); Set Height and width $ (' tmp '). style.height =

Chapter II string processing and coding no longer worry

2.1 String 2.1.1 String Conversions >>> A = 123 >>> B = 1.23 >>> type (a) >>> type (b) >>> type (str (a)) >>> type (str (b)) Description: First define integers and floating-point numbers, then look at the type, and use the STR () function to turn the object into a string. The type () function is used here to view the object type. This type () in later learning is very used, just started learning, often because the object type is wrong, causing the program to run an error, then you can use it to

CXF Integration Spring (client)

on the client side, the integration of CXF and spring is actually a process in which the controller or service calls the WebService agent in Springmvc, and we only need to add the files generated by Wsdl2java to our project, It then relies on the agent injected into the webservice in the controller or service, which injects the service interface from the makefile into the controller . We then configure the generated service interface in our configuration file, which is different from the way we

Reproduced HDMI on Zedboard with Petalinux.

project into the Vivado 2014.1 and update it to use Latest Xilinx IP ' s. Let ' s build a FSBL. We need very typical ZYNQ first stage boot loader and I covered creation of it before, so now just a short description: Run XSDK. Create new ' Hardware Platform specification ' project (I named it ' ZEDBOARD-HDMI-HW ') and specify HW created in a previous Step. Create Application

Intra-cluster Replication in Apache kafka--reference

leader then continues to commit new messages with F Ewer replicas in the ISR. Notice that now, the system was running in an under replicated mode.The leader also maintains a high watermark (HW), which are the offset of the last committed message in a partition. The HW is continuously propagated to the followers and are checkpointed to disk in each broker periodically for recovery.When a failed replica are

Java draws WAV audio Waveforms

));Layout. setverticalgroup (Layout. createparallelgroup (javax. Swing. grouplayout. Alignment. Leading). Addgap (0,300, short. max_value));Pack ();} // /*** @ Param ARGs the command line arguments*/Public static void main (string ARGs []) {Musicline MSL = new musicline ();MSL. setvisible (true );Thread YH = new thread (MSL );YH. Start ();MSL. Play (); } } Import java. AWT .*;Import javax. Swing .*;Public class func extends jframe {/*** * * */Public static void main (string

Another method to import data to excel

I have written a method a long time ago. The related connection is in: Method Code Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--> 1 // Exit 2 Public Static Void Toexcel (system. Web. UI. webcontrols. DataGrid datagrid2excel, String Filename, String Title, String Head) 3 { 4 System. Io. stringwriter SW = New System. Io. stringwriter (); 5 System. Web. UI. htmltextwriter

Obtain the decoded YUV data from FFMPEG.

");If (pframe ){Av_free (pframe );}Continue;}Generatepreview (pframe, width, height ); If (pframe ){Av_free (pframe );}// Writevideoframe (outcontext, videostream, yuvdata );Writevideoframe2 (outcontext, videostream, yuvdata, PTS );}} Void ffmpegmuxer: generatepreview (avframe * pframe, int width, int height) {Memset (yuvdata, 0, 1024*1024 );Int hW = (width + 1)/2;Int HH = (height + 1)/2;For (INT y = 0; y Memcpy ( yuvdata [width * y], pframe-> dat

The server is configured as the firewall, Nat routing gateway, DHCP, and DNS.

after adding a Mac:Sudo startmynetwork. Sh Or execute the startmynetwork. Sh script on the desktop. Q: How to restart iptables Sudo startmynetwork. Sh Or execute the startmynetwork. Sh script on the desktop. 1. inode authentication Client installation First, add Ifconfig eth0 down Ifconfig eth0 HW ether ****** Ifconfig eth0 up (1) download the Linux version from the school website. (2) modify the install. Sh permission (755) and execute install. S

Principle Analysis of image Trojan (old technology)

to add the corresponding BMP file header before the file header of the EXE file (of course, the data in the BMP file header must meet the size of the EXE file), so that we can cheat IE to download the BMP file, we started to experiment with JPG files and found that if the file header is incorrect, it will not be downloaded. The conversion code is as follows:Program exe2bmp; UsesWindows,SysUtils; Var len, row, col, fs: DWORD;Buffer: array [0 .. 255] of char;Fd: WIN32_FIND_DATA;H,

How to handle inconsistent names of powerpath shared disks in linux

] Logical device ID = login [LUN 10] state = alive; policy = BasicFailover; priority = 0; queued-IOs = 0; Owner: default = sp a, current = sp a Array failover mode: 1 ================================================ ================================================= --- ------------ Host ----------------Stor--- I/O Path -- Stats --- ### HW Path I/O Paths Interf. mode State Q-IOs Errors ====================================== ============================

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