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#include "threadimpl.h"
void
_threadinitstack(Thread *t, void (*f)(void*), void *arg)
{
sigset_t zero;
/* do a reasonable initialization */
memset(&t->sched.uc, 0, sizeof t->sched.uc);
sigemptyset(&zero);
sigprocmask(SIG_BLOCK, &zero, &t->sched.uc.uc_sigmask);
/* call getcontext, because on Linux makecontext neglects floating point */
getcontext(&t->sched.uc);
/* call makecontext to do the real work. */
t->sched.uc.uc_stack.ss_sp = t->stk;
t->sched.uc.uc_stack.ss_size = t->stksize;
makecontext(&t->sched.uc, (void(*)())f, 1, arg);
}
void
_threadinswitch(int enter)
{
USED(enter);
}
void
_threadstacklimit(void *bottom, void *top)
{
USED(bottom);
USED(top);
}
void
_swaplabel(Label *old, Label *new)
{
if(swapcontext(&old->uc, &new->uc) < 0)
sysfatal("swapcontext: %r");
}
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