thread and fork()

Jaguar · 11-11-2003, 10:11 AM

what's different between thread and fork( ) (or vfork( )) and their usage for programming in real life?
which one could be used in which situation?
I did read several posts, but still not clear.

Thanks,

jim mcnamara · 11-11-2003, 01:34 PM

A process is a container for execution one or more threads. A process has to have at least one execution thread.

fork() creates a process out of the old process, bringing along all of the threads. It takes a snapshot of all the variables, program counter, etc, and creates a new process with the same
program counter, data, and code set. The forked process has a new process context, outside of the old one.

A new thread remains inside the process context.

11-11-2003, 10:11 AM	#1
Jaguar still a n00b Join Date: Jun 2002 Posts: 187	thread and fork() what's different between thread and fork( ) (or vfork( )) and their usage for programming in real life? which one could be used in which situation? I did read several posts, but still not clear. Thanks, __________________ slackware 10.0; kernel 2.6.7 gcc 3.4.0; glibc 2.3.2; vim editor migrating to freebsd 5.4
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11-11-2003, 01:34 PM	#2
jim mcnamara . Join Date: Nov 2003 Posts: 293	A process is a container for execution one or more threads. A process has to have at least one execution thread. fork() creates a process out of the old process, bringing along all of the threads. It takes a snapshot of all the variables, program counter, etc, and creates a new process with the same program counter, data, and code set. The forked process has a new process context, outside of the old one. A new thread remains inside the process context.
jim mcnamara is offline

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