On 14/09/06, Tharindu Rukshan Bamunuarachchi <tharindunix@xxxxxxxxx> wrote:
Like to know about threading Linux Does Linux support 1-1 User-Kernel thread mapping??
NPTL (Native POSIX Thread Library) is 1x1 - The older LinuxThreads library was not.
For e.g. If i create 2 posix threads in one application .. (pthread_create) does kernel scheduler treat two threads individually ??
Yes.
What is the different between pthread_create and fork() system call in kernel??
pthread_create() creates a new thread, fork() creates a new process.
What are the advantageous pthread over fork()??
The difference here is the difference between threads and processes. Threads share memory space, processes do not, threads are faster to create than processes, processes with multiple threads are harder to debug, etc etc. Read up on process vs thread. Here are some documents to read - google can find you more : http://en.wikipedia.org/wiki/Native_POSIX_Thread_Library http://people.redhat.com/drepper/nptl-design.pdf http://www-128.ibm.com/developerworks/linux/library/l-threading.html?ca=dgr-lnxw07LinuxThreadsAndNPTL http://www.csie.nctu.edu.tw/~cdsheen/enews/read.php?server=netnews.csie.nctu.edu.tw&group=comp.os.linux.development.system&artnum=157968 http://www.tldp.org/FAQ/Threads-FAQ/ -- Jesper Juhl <jesper.juhl@xxxxxxxxx> Don't top-post http://www.catb.org/~esr/jargon/html/T/top-post.html Plain text mails only, please http://www.expita.com/nomime.html -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
