Hi all ,
I am trying to build a simple pre-emptive userspace thread library using makecontext,getcontext and swapcontext.
Is it safe to assign the ucontext_t struct passed in a sighandler with a ucontext_t struct created using getcontext ?
I am currently using Redhat Linux 7.3 with gcc 2.96 .
If anybody has any idea regarding what can be the potential problem with
such usage ?
Regards
Kshitiz
eg.
static void handler_sigalrm(int sig ,siginfo_t *sip ,void *arg) {
ucontext_t * uap = (ucontext_t *)arg;
int x;
current_thread = *uap; // current_thread and other_thread are global
*uap = other_thread; // object of type ucontext_t
}
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