X-Git-Url: http://nsz.repo.hu/git/?p=musl;a=blobdiff_plain;f=src%2Fstdio%2F__lockfile.c;h=4e0239e7e96399761effc4f60b8a151887454a07;hp=82f50b421efa1a0152351c63bcb1bba90ad8fb92;hb=eb0e8fa0b1960cff4bd65ebefc798f70273b0bc9;hpb=5eb0d33ec0f08b123c5c10877d6258d05fa9453a

diff --git a/src/stdio/__lockfile.c b/src/stdio/__lockfile.c
index 82f50b42..4e0239e7 100644
--- a/src/stdio/__lockfile.c
+++ b/src/stdio/__lockfile.c
@@ -3,17 +3,18 @@
 
 void __lockfile(FILE *f)
 {
-	int spins;
-	if (f->owner < 0) return;
-	if (f->owner && f->owner == __pthread_self()->tid) {
+	int spins=100000;
+	int tid;
+
+	if (f->lock < 0) return;
+	tid = __pthread_self()->tid;
+	if (f->lock == tid) {
 		while (f->lockcount == INT_MAX);
 		f->lockcount++;
 		return;
 	}
-	spins = 100000;
-	while (a_swap(&f->lock, 1))
+	while (a_cas(&f->lock, 0, tid))
 		if (spins) spins--, a_spin();
-		else syscall0(__NR_sched_yield);
-	f->owner = __pthread_self()->tid;
+		else __syscall(SYS_sched_yield);
 	f->lockcount = 1;
 }