My mistakeThe linux kernel does not support the concept of threads (there are no thread system calls). the only system calls for achieving this somultaneous mechanism would be fork() and exec(). The pthreads library used these system calls.you are mistaken. threads (roughly speaking) are two active entities, running in the same address space, so using exec or fork can not (EVER) achieve such behavior. pthread uses the clone system call, which does implements threads (of some kind, anyway). (actually, pthread uses clone with the following flags: flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND. look at man 2 clone for explanations.)yes what nir said is right since fork or exec create a seperate process context, whereas two threads run in a single process context both having access to the memory of the process that creates them. Hence, i think creating threads using exec() and fork() is not possible. -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
To be specific Pthread actually used the clone() system call. Found it from the pthreads documentation (faq). Check out Internals of Linux Threads (5)
http://pauillac.inria.fr/~xleroy/linuxthreads/faq.html
regards
nix.
