what calling function

1. Stack-related instructionsPush: Presses a 32-bit operand onto the stack. This operation causes the ESP to be reduced by 4. ESP is visually referred to as the top of the stack. We think that the top is a small area of the address, so the more data

Recently work idle read the previous buy F "C + + programming thought" here, I think the most helpful part, one left to review their own, on the other hand, and share with the small partners:1 OPP-related1.1, each object has a type, oop in the class

1. A function declared with the virtual keyword is called a virtual function, and a virtual function is definitely a member function of a class.2. A class with a virtual function has a one-dimensional virtual function table called a virtual table.

Read the book, found the four functions, want to know their differences. Results Online Search found that many people say that fgetc, FPUTC F represents the file, that is, these two functions are related to files! But a look at their function

Time complexity and spatial complexity of commonly used sorting algorithms Sorting method Worst-time analysis Average Time complexity Degree of stability Complexity of space Bubble sort O (N2)

First, what is a function?Functional, well-organized, reusable code snippets used to implement a single, or associated function.Functions can improve the modularity of the application, and the reuse of code, which is called the user-defined

Linux from program to processVamei Source: Http://www.cnblogs.com/vamei Welcome reprint, Please also keep this statement. Thank you!How does the computer execute the process? This is the core issue of computer operation. Even if the program has been

the process of understanding process scheduling and process switching during the time-tracking analysis process20135111 Li Guangji Original works reproduced please specify the source + "Linux kernel analysis" MOOC course

As a driver author, you may find that you face a device that must download the firmware into it before it can support work. The competition in many parts of the hardware market is so strong that even a bit of the cost of the EEPROM used for device

To create a process with the fork () function, how do you terminate a process?Process exits are categorized as normal exit and exception exit:Normal exit:1). Execute return in the main () function.2). Call the exit () function3). Call the _exit ()

exit is a function that has parameters. void exit (int status). leave control to the system after exit executes. Return is returned after the function has finished executing. After the return executes, give control to the calling function.

third, Linux pages interrupt processingtransferred from: http://blog.csdn.net/cxylaf/article/details/16265341. Request Paging Interrupt:the pages in the process's linear address space do not have to reside in memory, such as the process allocation

Finally, the core of the function Do_execve, because here for the sake of simplicity I do not analyze the case of the shell command,/** ' do_execve () ' function executes a new program. The */////Execve () system interrupts the calling function.

Process exit in Linux is divided into normal exit and abnormal exit1. Normal exit(1) Execute return in the main () function(2) Call the exit () function(3) Call the _exit () function2. Abnormal exit(1) Call the About () function(2) a process

1) Blocking I/O (blocking I/O)2) non-blocking I/O (nonblocking I/O)3) I/O multiplexing (SELECT and poll) (I/O multiplexing)4) Signal-driven I/O (signal driven I/O (SIGIO))5) asynchronous I/O (asynchronous I/O (the POSIX aio_functions))The first four

Linux0.11 Kernel anatomy – Kernel architecture ©fanwu "Linux kernel full comment" Download: http://files.cnblogs.com/files/HanBlogs/linux-kernel.pdf (click on the lower right corner to save the PDF after entering it ^_^)A fully available

1. Please describe in detail the start-up process of the CentOS system (detailed to what each process system does)The CentOS hosts are started in the following order1. Post power-on self-test2, the BIOS read the BIOS settings in the CMOS

Reprint: http://blog.csdn.net/jay900323/article/details/18141217  performance analysis of Linux five IO modelsDirectory (?) [-] Conceptual understanding Five types of IO models under Linux Blocking IO Model Non-blocking

Original: http://www.cnblogs.com/kunhu/p/3624000.html1. Conceptual understandingIn network programming, we often see synchronous (sync)/async (Async), blocking (block)/non-blocking (Unblock) Four call modes:Synchronous:The so-called synchronization

FunctionCase One :#!/bin/bashHello () {echo "Hahahah"}HelloExecutes the function with the result : hahahaCase two :#!/bin/bashFunwithreturn (){echo "The function is to get the sum of the number"Read-p "Input first number" NUM1Read-p "Input second