From 7712ff205159171d3fb2091018ecbc80a45e2023 Mon Sep 17 00:00:00 2001
From: Michael O'Farrell <michaelofarrell@fb.com>
Date: Tue, 6 Dec 2016 09:13:18 -0800
Subject: [PATCH] Add hhi file for WeakRefs.

Reviewed By: dlreeves

Differential Revision: D4223324

fbshipit-source-id: 216f5ac1fd0f80ff0caed140a5aa7e1e20dca04d
---
 hphp/hack/hhi/weakref.hhi | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100644 hphp/hack/hhi/weakref.hhi

diff --git a/hphp/hack/hhi/weakref.hhi b/hphp/hack/hhi/weakref.hhi
new file mode 100644
index 00000000000..7303e4030ef
--- /dev/null
+++ b/hphp/hack/hhi/weakref.hhi
@@ -0,0 +1,18 @@
+<?hh // decl /* -*- mode: php -*- */
+/**
+ * Copyright (c) 2014, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the "hack" directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ *
+ */
+
+final class WeakRef<T> {
+  public function __construct(T $object);
+  public function acquire(): bool;
+  public function get(): ?T;
+  public function release(): bool;
+  public function valid(): bool;
+}
-- 
2.11.4.GIT