Add window overload that takes an executor to prevent stack overflow

[folly.git] / folly / futures / helpers.h

diff --git a/folly/futures/helpers.h b/folly/futures/helpers.h
index ff132af076155791decb9be5a863d21ced3fb5fe..a5198e714be908099a743c6b0da507e9fc146ae3 100644 (file)
--- a/folly/futures/helpers.h
+++ b/folly/futures/helpers.h
@@ -328,6 +328,15 @@ template <
     class Result = typename futures::detail::resultOf<F, ItT&&>::value_type>
 std::vector<Future<Result>> window(Collection input, F func, size_t n);
 
+template <
+    class Collection,
+    class F,
+    class ItT = typename std::iterator_traits<
+        typename Collection::iterator>::value_type,
+    class Result = typename futures::detail::resultOf<F, ItT&&>::value_type>
+std::vector<Future<Result>>
+window(Executor* executor, Collection input, F func, size_t n);
+
 template <typename F, typename T, typename ItT>
 using MaybeTryArg = typename std::conditional<
     futures::detail::callableWith<F, T&&, Try<ItT>&&>::value,