X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=src%2Fthread%2Fpthread_mutexattr_setrobust.c;h=04db92a626dbd0b05eac4bcd88363a6e31e54207;hb=1ef37aa00ea830dfda76e04e3d941cafa74d8b76;hp=8948cbafbbc88268889d63569abe463fbd11ca71;hpb=b092f1c5fa9c048e12d002c7b972df5ecbe96d1d;p=musl

diff --git a/src/thread/pthread_mutexattr_setrobust.c b/src/thread/pthread_mutexattr_setrobust.c
index 8948cbaf..04db92a6 100644
--- a/src/thread/pthread_mutexattr_setrobust.c
+++ b/src/thread/pthread_mutexattr_setrobust.c
@@ -1,31 +1,25 @@
 #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;
+static pthread_once_t check_robust_once;
+static int check_robust_result;
 
-	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 void check_robust()
+{
+	void *p;
+	size_t l;
+	check_robust_result = -__syscall(SYS_get_robust_list, 0, &p, &l);
 }
 
 int pthread_mutexattr_setrobust(pthread_mutexattr_t *a, int robust)
 {
 	if (robust > 1U) return EINVAL;
+	if (robust) {
+		pthread_once(&check_robust_once, check_robust);
+		if (check_robust_result) return check_robust_result;
+		a->__attr |= 4;
+		return 0;
+	}
 	a->__attr &= ~4;
-	a->__attr |= robust*4;
 	return 0;
 }