How Is Fork Implemented in Linux?
Contents Under Linux, Fork() Is Implemented Using Copy-on-Write Pages, So the Only Penalty That It Incurs Is the Time and Memory Required to Duplicate the...
Under Linux, fork() is implemented using copy-on-write pages, so the only penalty that it incurs is the time and memory required to duplicate the parent’s page tables, and to create a unique task structure for the child.
How does fork work in Linux?
The fork() System Call. System call fork() is used to create processes. The purpose of fork() is to create a new process, which becomes the child process of the caller. After a new child process is created, both processes will execute the next instruction following the fork() system call.
Must Read
How does a fork work?
The fork() function is special because it actually returns twice: once to the parent process and once to the child process. In the parent process, fork() returns the pid of the child. In the child process, it returns 0. In the event of an error, no child process is created and -1 is returned to the parent.
Marcus Vance is a cybersecurity auditor and technology writer dedicated to educating the public about online safety, data privacy regulations, enterprise security, and emerging cyber threats.
