Add ProducerConsumerQueue::capacity()

[folly.git] / folly / ProducerConsumerQueue.h

diff --git a/folly/ProducerConsumerQueue.h b/folly/ProducerConsumerQueue.h
index fd9c94a0dc3fd49edda24695cb16323be4580a77..8d2e47f084fdea9288ece427f9c343f973d80d42 100644 (file)
--- a/folly/ProducerConsumerQueue.h
+++ b/folly/ProducerConsumerQueue.h
@@ -167,6 +167,11 @@ struct ProducerConsumerQueue {
     return ret;
   }
 
+  // maximum number of items in the queue.
+  size_t capacity() const {
+    return size_ - 1;
+  }
+
  private:
   char pad0_[CacheLocality::kFalseSharingRange];
   const uint32_t size_;