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-rw-r--r--boost/asio/detail/op_queue.hpp6
1 files changed, 6 insertions, 0 deletions
diff --git a/boost/asio/detail/op_queue.hpp b/boost/asio/detail/op_queue.hpp
index 9605248567..89f318eedf 100644
--- a/boost/asio/detail/op_queue.hpp
+++ b/boost/asio/detail/op_queue.hpp
@@ -139,6 +139,12 @@ public:
return front_ == 0;
}
+ // Test whether an operation is already enqueued.
+ bool is_enqueued(Operation* o) const
+ {
+ return op_queue_access::next(o) != 0 || back_ == o;
+ }
+
private:
friend class op_queue_access;