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-rw-r--r--NEWS3
1 files changed, 3 insertions, 0 deletions
diff --git a/NEWS b/NEWS
index d4c19a5a90..db31e6773f 100644
--- a/NEWS
+++ b/NEWS
@@ -113,6 +113,9 @@ with all sufficient information, see the ChangeLog file.
Object.const_get("Foo::Bar::Baz")
* Mutex
+ * added method:
+ * added Mutex#owned? which returns the mutex is held by current
+ thread or not. [experimental]
* incompatible changes:
* Mutex#lock, Mutex#unlock, Mutex#try_lock, Mutex#synchronize
and Mutex#sleep are no longer allowed to be used from trap handler