Do pthreads and getcontext/setcontext work nicely with each other? Thanks Lee ----- Original Message ----- From: Steven Smith <[EMAIL PROTECTED]> Date: Sat, 18 Jan 2003 17:46:44 +0000 To: Lee Chin <[EMAIL PROTECTED]> Subject: Re: suspending a thread and executing it later
> > Here is what I want to do... in my program, I want to arbitrarily in > > some function suspend the execution of the current (self) thread and > > schedule my self to resume from that point later. > Have a look at ``info libc "Non Local Exits" "System V Contexts"''. > The basic idea is to have one ucontext per thread. When the running > thread wants to block, it picks some other thread, and then > swapcontext()s with it. > > > In my program, I only have 2 threads... and lets say thread 1 ends > > up calling a function foo() that will block on IO. I dont want to > > make the whole system block, so I want to resume the execution of > > foo() when the IO completes and restore thread state so that the > > stack (function call history and all) is maintained. > The easy way to do this is via pthreads, but if you really want to > do it yourself, you'll probably need to set every file descriptor > to non-block mode, and then swapcontext() whenever an IO > function returns EAGAIN. > > Steven Smith, > [EMAIL PROTECTED] -- __________________________________________________________ Sign-up for your own FREE Personalized E-mail at Mail.com http://www.mail.com/?sr=signup Meet Singles http://corp.mail.com/lavalife - To unsubscribe from this list: send the line "unsubscribe linux-newbie" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.linux-learn.org/faqs
