getppid

Function Description: Getpid returns the current process ID, and getppid returns the parent process ID. Usage:# Include # Include Pid_t getpid (void );Pid_t getppid (void ); Example: # Include # Include # Include int main (void) {

(1) Basic Process Environment A process is an execution of a program. It is a program that runs in its own virtual address space and has independent functions. Processes are the basic unit for allocating and releasing resources. When a program is

Zookeeper 1 fork () function The sub-process copies the 0-3g space of the parent process and the PCB in the parent process kernel, but the ID number is different. A fork call returns two times at a time, which has the following features: A: The

Create a process:/* ******************* * Function: Create a new process by copying the current process (as with the parent process) and performing the same position *pid_t: generally 16-bit signed integer number, not enough to typedef * Return

I. Introduction to fork   A process, including code, data, and resources allocated to the process. The fork () function creates a process that is almost identical to the original process through system calls, that is, the two processes can do

The process created:#include #include#include#includeintMain () {intPid=fork ();//Create Child process if(pid==0) {printf ("d:%d\t%d\n", Getppid (), Getpid ());return 0;//Child process End } intPid2=fork ();//Create Child process

http://blog.csdn.net/jason314/article/details/5640969The fork () call will copy a new process that is almost identical to the current process (except for the fork's return value), each of which has its own space, each with its own local variables,

Finally, I began to learn about the apue Process Management chapter. In fact, I have read a book, read it, and read it carefully. However, we do not have much time to read words one by one, so we need to identify them. You can only view what you are

Transferred from: http://blog.csdn.net/jason314/article/details/5640969First, Fork Introduction knowledgeA process, including code, data, and resources assigned to the process. The fork () function creates a process that is almost identical to the

Transfer from:: http://blog.csdn.net/jason314/article/details/5640969First, Fork Introduction knowledgeA process, including code, data, and resources assigned to the process. The fork () function creates a process that is almost identical to the

　　#include #include#include#includeintMainintargcChar**argv) {pid_t my_pid,parent_pid; pid_t te; My_pid=Getpid (); Parent_pid=Getppid (); printf ("Mypid is [%d]\t parentid is [%d]\n", My_pid,parent_pid); Te=Fork (); printf ("*********begin*****

Anti-debugging technology under LinuxJanuary 30, 2014 ⁄ general ⁄ a total of 2669 characters ⁄ font size small medium big ⁄ comments off Transfer from http://wangcong.org/blog/archives/310How to prevent your own program from being tracked by the

Orphan process: One parent process exits, and one or more of its child processes are still running, then those child processes will become orphans. The orphan process will be adopted by the INIT process (process number 1) and the Init process

////main.c//Project_c////Created by Lijinxu on 16/8/13.//copyright©2016 year Lijinxu-neu. All rights reserved.//#includeintMainintargcConst Char*argv[]) {pid_t fpid; /*Test Fork Part 1*/ intCount =0; printf ("The main process ' s ID is%d\n"

　　A process is an address space running one or more threads and the system resources required by these threads, and the PS-AJX command is used to print all current processes, where the state is expressed as: s for Sleep, R for run, D for wait, T for

Lab 4: Use the same system call using the Library function API and the embed assembly code in C code two waysName: Li DonghuiStudy No.: 20133201Note: Original works reproduced please specify the source + "Linux kernel analysis" MOOC course

Python process pool: multiprocessing. pool, This article goes to workshop. When using Python for system management, especially operating multiple file directories at the same time, or remotely controlling multiple hosts, parallel operations can save

1. Process Number:Each process is initialized, the system assigns it a uniquely identified process ID, called the process number;The process number is of type pid_t, and the current process number and the process number of the parent process of the

Author: Sandy Original works reproduced please indicate the source"Linux kernel Analysis" MOOC course http://mooc.study.163.com/course/USTC-1000029000 "Experimental environment: C+linux64 bit (32-bit system may result in different)In accordance with

Environment variable Operation function Char*getenv (const char* name); Get environment variable value Intputenv (cahr* str); A string of name=value, put it in the environment table, and delete its original definition if name already