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Continue fighting pthreads.

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Clean up thread library a bit too.
This commit is contained in:
rsc
2004-09-23 03:01:36 +00:00
parent c6687d4591
commit 7966faa931
19 changed files with 539 additions and 654 deletions
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13
src/libthread/ucontext.c
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@@ -6,17 +6,18 @@ _threadinitstack(Thread *t, void (*f)(void*), void *arg)
sigset_t zero;
/* do a reasonable initialization */
memset(&t->sched.uc, 0, sizeof t->sched.uc);
memset(&t->context.uc, 0, sizeof t->context.uc);
sigemptyset(&zero);
sigprocmask(SIG_BLOCK, &zero, &t->sched.uc.uc_sigmask);
sigprocmask(SIG_BLOCK, &zero, &t->context.uc.uc_sigmask);
/* call getcontext, because on Linux makecontext neglects floating point */
getcontext(&t->sched.uc);
getcontext(&t->context.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);
/* leave a few words open on both ends */
t->context.uc.uc_stack.ss_sp = t->stk+8;
t->context.uc.uc_stack.ss_size = t->stksize-16;
makecontext(&t->context.uc, (void(*)())f, 1, arg);
}
void