X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=src%2Fthread%2F__lock.c;h=2f345ae7af02153c1bffbd5cbfc0f0be860127a6;hb=f143458223f90262a9c2d929f9e815a74e3aa139;hp=557c6a62329e856537f4e7fe69e4e447bbd0c1f3;hpb=0b44a0315b47dd8eced9f3b7f31580cf14bbfc01;p=musl

diff --git a/src/thread/__lock.c b/src/thread/__lock.c
index 557c6a62..2f345ae7 100644
--- a/src/thread/__lock.c
+++ b/src/thread/__lock.c
@@ -1,12 +1,12 @@
-#define SYSCALL_RETURN_ERRNO
 #include "pthread_impl.h"
 
 void __lock(volatile int *l)
 {
-	int spins=100000;
-	/* Do not use futexes because we insist that unlocking is a simple
-	 * assignment to optimize non-pathological code with no contention. */
-	while (a_xchg(l, 1))
-		if (spins) spins--, a_spin();
-		else syscall0(__NR_sched_yield);
+	while (a_swap(l, 1)) __wait(l, l+1, 1, 1);
+}
+
+void __unlock(volatile int *l)
+{
+	a_store(l, 0);
+	if (l[1]) __wake(l, 1, 1);
 }