double fork
It is a common mistake to fork a child process without calling waitpid() to wait for the termination of the child process. Without a wait() call, the ...,如果fork后不进行 wait 或 waitpid ，那么子进程将会成会僵尸进程。double fork后, second child成为孤儿进程，由init负责后续的清理工作。 #include <stdio.h> ... ,double fork . GitHub Gist: instantly share code, notes, and snippets. , When a process terminates, it expects its return code to be collected by its parent. Until this takes place, it sits there undead (zombie), it no ...,pid = fork(); if(pid == 0 && background == 1) // performs background process pid2 = fork(); if(pid2 == 0) // grandchild process } else // child process exit(0); } ... , Looking at the code referenced in the question, the justification is: Fork a second child and exit immediately to prevent zombies. This causes the ..., In Linux, a daemon is typically created by forking twice with the intermediate process exiting after forking the grandchild. This has the effect of ..., Something that I have been asked many times is why do Linux / Unix daemons double-fork to start a daemon? Now that I am blogging for HP's ...,創建process: fork(). Q：誰是第 ... clone(). 更精細控制parent/child process 間的資源共享; fork/vfork/pthread_create ... 寫daemon process 的步驟(double-fork magic).
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 double fork 相關參考資料
double fork to avoid zombie process - thinkiii
It is a common mistake to fork a child process without calling waitpid() to wait for the termination of the child process. Without a wait() call, the ... http://thinkiii.blogspot.com double fork trick - gists · GitHub
如果fork后不进行 wait 或 waitpid ，那么子进程将会成会僵尸进程。double fork后, second child成为孤儿进程，由init负责后续的清理工作。 #include <stdio.h> ... https://gist.github.com double fork · GitHub
double fork . GitHub Gist: instantly share code, notes, and snippets. https://gist.github.com How to double fork from a Python web server without leaving a ...
When a process terminates, it expects its return code to be collected by its parent. Until this takes place, it sits there undead (zombie), it no ... https://stackoverflow.com running a background process using a double fork? - Stack Overflow
pid = fork(); if(pid == 0 && background == 1) // performs background process pid2 = fork(); if(pid2 == 0) // grandchild process } else // child process exit(0); } ... https://stackoverflow.com What is the reason for performing a double fork when creating a ...
Looking at the code referenced in the question, the justification is: Fork a second child and exit immediately to prevent zombies. This causes the ... https://stackoverflow.com Why fork() twice - Stack Overflow
In Linux, a daemon is typically created by forking twice with the intermediate process exiting after forking the grandchild. This has the effect of ... https://stackoverflow.com Why use double-fork to daemonize? - LinuxJedi's devnull
Something that I have been asked many times is why do Linux / Unix daemons double-fork to start a daemon? Now that I am blogging for HP's ... http://thelinuxjedi.blogspot.c 第4章-進程控制-進程的一生- HackMD
創建process: fork(). Q：誰是第 ... clone(). 更精細控制parent/child process 間的資源共享; fork/vfork/pthread_create ... 寫daemon process 的步驟(double-fork magic). https://hackmd.io |