Clone

What is vfork ? It’s a special case of a clone. It is used to create new processes without copying the page tables of the parent process. calling thread is suspended until the child call execve or _exit. Points To Remember vfork()is an obsolete optimization. Before good memory management, fork()made a full copy of the parent’s memory, so it was pretty expensive. since in many cases a fork()was followed by `exec(), which discards the current memory map and creates a new one, it was a needless expense....

This is a quick article on Clone system call example without talking shit. So let’s see some pointers for the same : clone() creates a new process, in a manner similar to fork. It is actually a library function layered on top of the underlying clone()system call. Unlike fork , these calls allow the child process to share parts of its execution context with the calling process, such as the memory space, the table of file descriptors, and the table of signal handlers....