Q39.Marks: +2.0UGC NET Paper 2: Computer Science 11 March 2023
In Linux Operating System, when _________ is invoked, it is passed a set of flags that determine how much sharing is to take place between the parent and child tasks.
1.fork()
2.clone()✓ Correct
3.pthread()
4.thread()
Solution
The correct answer is clone()
Key Points
clone(): This system call creates a new process, similar to fork(), but it also allows the child process to share parts of its execution context with the calling process.
The execution context includes resources like memory space, file descriptor tables, etc.
The degree of sharing is controlled by a set of flags passed when invoked, which defines a spectrum between traditional processes and threads.
Additional Information
fork(): This is a system call used in Unix and Linux-based systems that creates a new process. The new process, called the child process, is an exact copy of the calling process, which is the parent process. It gets a new process ID (PID) and inherits most of the properties of the parent process, but they do not share the same memory space.
pthread_create(): This function is used to create a new thread in the context of the current process in POSIX-compliant operating systems (like Unix or Linux). Threads created by pthread_create share the same memory space but get their own stack memory.
