ck_spinlock: Add ck_spinlock_clh_locked.

12 years ago · a51c8c7aa6
parent 46d61ccd46
commit a51c8c7aa6
1 changed files with 11 additions and 0 deletions
--- a/include/ck_spinlock.h
+++ b/include/ck_spinlock.h
@ -802,6 +802,17 @@ ck_spinlock_clh_init(struct ck_spinlock_clh **lock, struct ck_spinlock_clh *unow
 	return;
 }

+CK_CC_INLINE static bool
+ck_spinlock_clh_locked(struct ck_spinlock_clh **queue)
+{
+	struct ck_spinlock_clh *head;
+
+	ck_pr_fence_load();
+	head = ck_pr_load_ptr(queue);
+	ck_pr_fence_load();
+	return ck_pr_load_uint(&head->wait);
+}
+
 CK_CC_INLINE static void
 ck_spinlock_clh_lock(struct ck_spinlock_clh **queue, struct ck_spinlock_clh *thread)
 {