From 618a6ec3134b15b76a76a8c68437df66c525cd82 Mon Sep 17 00:00:00 2001
From: Hans Fugal <fugalh@fb.com>
Date: Fri, 9 May 2014 15:00:48 -0700
Subject: [PATCH] (wangle) ManualExecutor::waitFor(F&&)

Summary:
@override-unit-failures

Test Plan: Using it in D1322350

Reviewed By: hannesr@fb.com

FB internal diff: D1322475
---
 folly/wangle/ManualExecutor.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/folly/wangle/ManualExecutor.h b/folly/wangle/ManualExecutor.h
index 93c2591a..14c455fa 100644
--- a/folly/wangle/ManualExecutor.h
+++ b/folly/wangle/ManualExecutor.h
@@ -42,6 +42,11 @@ namespace folly { namespace wangle {
       run();
     }
 
+    template <class F> void waitFor(F const& f) {
+      while (!f.isReady())
+        makeProgress();
+    }
+
    private:
     std::mutex lock_;
     std::queue<std::function<void()>> runnables_;
-- 
2.34.1