#include "pthread_impl.h"
-#include <stddef.h>
+#include "syscall.h"
-void __do_private_robust_list()
-{
- pthread_t self = __pthread_self();
- void **p, **prev, **next;
- pthread_mutex_t *m;
-
- for (prev=0, p=self->robust_list.head; p; p=next) {
- next = *p;
- m = (void *)((char *)p - offsetof(pthread_mutex_t, _m_next));
- if (!(m->_m_type & 128)) {
- int waiters = m->_m_waiters;
- if (prev) *prev = next;
- else self->robust_list.head = next;
- int cont = a_swap(&m->_m_lock, self->tid|0x40000000);
- if (cont < 0 || waiters) __wake(&m->_m_lock, 1, 1);
- } else {
- prev = p;
- }
- }
-}
+static volatile int check_robust_result = -1;
int pthread_mutexattr_setrobust(pthread_mutexattr_t *a, int robust)
{
if (robust > 1U) return EINVAL;
+ if (robust) {
+ int r = check_robust_result;
+ if (r < 0) {
+ void *p;
+ size_t l;
+ r = -__syscall(SYS_get_robust_list, 0, &p, &l);
+ a_store(&check_robust_result, r);
+ }
+ if (r) return r;
+ a->__attr |= 4;
+ return 0;
+ }
a->__attr &= ~4;
- a->__attr |= robust*4;
return 0;
}