On Mon, Dec 29, 2008 at 01:49:18AM +0530, Shyam Burkule wrote: > Hello, > I am sorry for asking silly question. > > In windows basic execution unit is thread, and Linux does not > differentiate between thread and process( I mean Linux doesn't give special > treatment for thread essentially they are normal process except they share > some resource with other process). If I use fork to create process, does > it create thread that run in the same thread group as parent run or does it > create another standalone process? > > Fork system call is equivalent to clone(SIGCHLD,0, so I think fork create > new standalone process. > > Please clarify. > > ~Shyam Hi Shyam, Actually, all is about tasks. For the kernel, process, thread, whatever, they are all tasks. When you create a process, you create a task (which is one thread). When you create a new secondary thread in this process, you create a new task too. We could perhaps consider it as a "subtask" but it has its own task_struct. Inside a same process, the threads belong to the same thread group. And when you create a new process (fork), you create a new task but not in the same thread group. Hmm? -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
