scripts

commit 859527cd00e6cb2e44b434b8c8db0a64f2ba8b4f
parent aaf93b722c979ac2227eb3a72c36e456661e7016
Author: sin <sin@2f30.org>
Date:   Thu,  1 Aug 2013 17:07:42 +0100

Add spinlock.h

Diffstat:
A
random/spinlock.h
 | 
15
+++++++++++++++

1 file changed, 15 insertions(+), 0 deletions(-)
diff --git a/random/spinlock.h b/random/spinlock.h
@@ -0,0 +1,15 @@
+typedef int spinlock_t;
+
+static inline void
+lock(spinlock_t *sl)
+{
+	while (__sync_lock_test_and_set(sl, 1))
+		;
+}
+
+static inline void
+unlock(spinlock_t *sl)
+{
+	__sync_synchronize();
+	*sl = 0;
+}