X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=src%2Fthread%2Fpthread_detach.c;h=77772af2c6349fca2cd66860c71e910c3138b101;hb=377218cb963aa20c6eb91781b0c79ad606631e6f;hp=f0eae3e8eb91e04e1a2e46397a9fa674db02fbf6;hpb=0b44a0315b47dd8eced9f3b7f31580cf14bbfc01;p=musl

diff --git a/src/thread/pthread_detach.c b/src/thread/pthread_detach.c
index f0eae3e8..77772af2 100644
--- a/src/thread/pthread_detach.c
+++ b/src/thread/pthread_detach.c
@@ -1,11 +1,14 @@
 #include "pthread_impl.h"
+#include <threads.h>
 
-int pthread_detach(pthread_t t)
+static int __pthread_detach(pthread_t t)
 {
-	/* Cannot detach a thread that's already exiting */
-	if (a_xchg(&t->exitlock, 1))
-		return pthread_join(t, 0);
-	t->detached = 1;
-	t->exitlock = 0;
+	/* If the cas fails, detach state is either already-detached
+	 * or exiting/exited, and pthread_join will trap or cleanup. */
+	if (a_cas(&t->detach_state, DT_JOINABLE, DT_DETACHED) != DT_JOINABLE)
+		return __pthread_join(t, 0);
 	return 0;
 }
+
+weak_alias(__pthread_detach, pthread_detach);
+weak_alias(__pthread_detach, thrd_detach);