get child process id

Basic attributes of a process: process ID, parent process ID, process group ID, session, and control terminal.Abstract:This document describes the basic attributes of a process, including process ID, parent process ID, process group ID, session, and

In Python, because of the existence of the global interpreter lock Gil, the multithreading in Python does not significantly improve the efficiency of the program (in this case, CPU-intensive), then in the processing of CPU-intensive computing, multi-

In Python, because of the existence of the global interpreter lock Gil, the multithreading in Python does not significantly improve the efficiency of the program (in this case, CPU-intensive), then in the processing of CPU-intensive computing, multi-

Linux programming, threading, process exit sequence problems are confusing, if the parent process/thread before the child process/thread termination, what the system will do? Conversely, what will the system do if the subprocess/thread terminates

Inherit from parent process Process Eligibility (live (real)/active (Effective)/saved (saved) user number (UIDs) and group number (Gids)) Environment (environment) Stack The memory opens a descriptor for the file

Document directory 1.1. System 1.2 popen: create a sub-process 1.3 exec Functions 1.4 fork 6.2 memory ing and sub-process: 6.3 copy of file descriptor 1. What is a process: a process is a program in execution Program: code> resource>

Turn from: http://blog.csdn.net/anxuegang/article/details/6636400 Waitpid system Call "Function Description:Waits for the process to change its state. All of the following calls are used to wait for a change in the state of the child process to

ZZ from:http://www.cnblogs.com/oubo/archive/2011/10/10/2394593.html Python subprocess Create child processes Python provides multiple modules for creating child processes, and I am more accustomed to using the subprocess module because there is

Unix_c_05.txt================Lesson Five Process Management================First, the basic concept------------1. Processes and Procedures~~~~~~~~~~~~~1) The process is the running program. A running program,There may be multiple processes. The

The previous two articles discussed how to kill a child process when the process exited unexpectedly, this section we studied under using process pool multiprocessing. Pool, how to ensure that the main process quits unexpectedly, worker processes in