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Today continue to explore the signal-related east, not much to say, is into the subject:The signal is represented in the kernel:The following diagram is used to further describe the state of the signal from generation to delivery (signal blocking

(a) Symbolic constantsA macro definition is a substitution policy in C that uses a preprocessing command #define equate a string (lengthy) text with a name (called a macro) and then use the macro in bulk in the source code. In the preprocessing

Debug macros for Linux C programmingIn the process of completing the project, it is unavoidable to debug, here I give you a I am using a debug macro. Nonsense not much to say, directly on the code.Implementation code/*********************************

You can use a macro to define a function that has no return value. For example: Copy Code code as follows: #define PRINTMAX (A, b) \ do \ {\ int x = A, y = b; \ printf ("Max:%d\n", x > y x:y); \} while (0)// ... Printmax (3, 4);

The TCP model is as follows:The model above is already clear.The specific function usage will not elaborate.Take a look at the TCP simple example:where server.c#include #include #include #include #include #include #include #define ERR_LOG (ErrLog)

Macro definition of C Language notes (1) Symbolic Constants Macro definition is a replacement strategy in C language, that is, using preprocessing commands # define equals a string of (lengthy) texts with a name (macro, then you can batch use Macros

Java 8 pseudo-sharing and cache row filling -- @ Contended annotation, Java 8 -- @ contended In my previous article , we demonstrated that in Java 8, you can use @ Contended annotation at the class level to fill in cache rows. In this way, the

The macro learning in kernel-general Linux technology-Linux programming and kernel information. The following is a detailed description. Check the macro of the variable type obtained from the kernel. First implementation: /* * Check at compile time

The difference between #define, const, typedef#define is not defining variables, it's just for text substitution.For example:#define PI 3.1415926float Angel;angel=30*pi/180;Then, when the program is compiled, the compiler will first "#define PI 3.141

I. Limitations of the General list.When we learn the data structure, the operation of the linked list is much the same, although the data structure uses the abstract type description algorithm, but the implementation of the method itself has caused

The files for the memory management functions of the Redis database are: Zmalloc.h and ZMALLOC.C.Redis author in the memory management module to consider the view system is installed in the Tcmalloc or Jemalloc module, these two are already a long

Definition: The # define Directive You can use the # define directive to give a meaningful name to a constant in your program. The two forms of the syntax are: Syntax # Define identifier token-stringopt # Define identifier [(identifieropt,...,

Kernel version: 2.6.30 Platform: Arm In a single processor that cannot be preemptible, local_irq_enable and local_irq_disable can be used to eliminate asynchronous sources. Avoid using these two Macros in the driver (the system cannot respond to the

On the X86 platform, the memory is divided into low-end memory and high-end memory, so the corresponding virtual address of page search in the two regions is different.1. Definition of page_address () function on x86In include/Linux/mm. h, there are

Write a good-looking macro definition in C language. Using macro definition can prevent errors, improve portability, readability, and convenience. The following lists some macro definitions commonly used in mature software ......1. prevent a header

The wait_event () function is often used to block the current running process to see how to implement the wait_event () function in the Linux kernel. First, we will introduce several macro-defined functions: 1. # define define_wait_func (name,

From: http://blog.chinaunix.net/u3/93713/showart_2061476.html   Optimize barrier and memory barrierOptimization barrier When the compiler compiles the source code, the source code is optimized, and the commands of the source code are reordered to be

After the master guidance, the notes, very grateful for a colleague willing to study technology, the following is not my original, is his analysis of the results#include #includestructLock_class_key {intck;};#defineMutex_init () Do {

Step 1: Understanding Remote wake-up Computer Digest 2003.9-Application and Tips- remote wake-up a little pass "Computer Application Digest" in 2003, the 7th issue of "strategist, winning thousands-remote control" aThis paper introduces how to

When playing mobile phone games, the screen receives our touch message is essential, according to our touch events, to achieve the corresponding functions, here we will learn how to cocos2d-x in the touch is how to achieve. Touch is divided into a