static local variable

Text: Code snippet. The entire code (instruction) of the stored program, derived from the code portion of the binary executable, is placed in the binary file at compile time.Initialized data (referred to as data segment) and uninitialized (BSS) Form

When a program file runs as a process, the process obtains space in memory. This space is the process of its own memory space. Each process space is divided into different regions as follows:　　　　　　　　　　　　Process memory Space layout diagramText: Code

Object-oriented analysis and design Experimental report oneA Storage categories for variablesAuto Static register externAuto variables  Local variables in a function, such as those not specifically declared as static storage classes, are

Original address: http://www.cnblogs.com/yc_sunniwell/archive/2010/07/14/1777433.html Scope rules tell us the valid range of a variable, where it was created and where it was destroyed (that is, out of scope). The valid scope of a variable starts at

In a multitasking operating system, each process runs in its own memory sandbox. This sandbox is the virtual address space, which is a 4GB memory address block in 32-bit mode. In a Linux system, the kernel process and user processes account for 1:3

　 1 the global variable (external variable) before the description and then the static to form a global variable. The global variable itself is the static storage mode, static global variables are of course also static storage mode. The two are not

In general, an executable binary (or, more specifically, a process unit under the Linux operating system, called a task in uc/osii) has 3 parts when it is stored (without calling into memory), which is the code snippet (text), the data segment, and

In the C language, each variable and function has two properties: 数据类型 and 数据的存储类别 .Storage categories for local variables and global variable variables in C language ( static ,,, extern auto register ) 1. Divide the variable from the scope of

Copy Code code as follows: function Createcountdowntimer (second) Local Ms=second * 1000; Local function Countdown () ms = Ms-1; return MS; End return countdown; End Timer1 = Createcountdowntimer (1);For i=1,3 doPrint

storage categories for local and global variable variables in C language (Static,extern,auto,register) 1. Local and global variablesWhen discussing the shape parametric of a function, it was mentioned that the form parametric allocates memory

The static keyword is familiar to everyone, known as static. See how MSDN Describes static:When modifying a variable, the static keyword specifies this variable has static duration (it is allocated when the PR Ogram begins and deallocated when the

Reentrant and non-reentrant functions are mainly used in multitasking environments, a reentrant function is simply a function that can be interrupted, that is, it can be interrupted at any point in the execution of the function, and run to the OS to

# # #引言As more and more powerful high-level languages emerge, in the server computing capacity is not a bottleneck, many students will choose to develop high efficiency, powerful virtual machine support of the Advanced Language (Java), or scripting

Http://docs.sun.com/app/docs/doc/819-7051?l=zh "Multithreaded Programming Guide" An excerpt from the "Apue" POSIX and ISO c define errno as such a symbol, which expands into a modifiable integer left value (lvalue). This can be an integer that

"C Program Design" Reading notes Keywords: C languageOriginal author name: Loose_wentThe original source of the article: vczx.com---http://www.vczx.com/minute_c.php Written in front: "C Program Design" can be said to be a foundation of the

A variable is defined in the body of the function that allocates stack memory to the local variable whenever the program runs to that statement. However, as the program exits the function body, the system will reclaim the stack memory and the local

The reason to write this blog is because you are writing a Nginx disk cache management program, has now entered the testing phase, the test on this program is divided into several major steps: 1. Memory management is correct (because this program

http://blog.csdn.net/yusiguyuan/article/details/45155035 http://javathinker.iteye.com/blog/1733058 Preface In the development of the lower level, you need to understand how the program is stored. "Memory is always occupied by the process", which can

Java is an object-oriented programming language (OOP), and everything is an object. Several concepts: 1. References, references are used to manipulate objects, manipulation objects need to be referenced to complete, for example, the remote control

 A program is essentially composed of BSS, data, and text segments three. This concept is very important in the current computer programming, and is very important in the design of the embedded system, which involves the memory size allocation of