From 6493bd35f6e50048132d0efd910b4661f25c317c Mon Sep 17 00:00:00 2001
From: greg <greg7mdp@gmail.com>
Date: Sun, 7 Apr 2019 09:14:37 -0400
Subject: [PATCH] fix possible deadlock when using internal synchronization

---
 parallel_hashmap/phmap.h | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/parallel_hashmap/phmap.h b/parallel_hashmap/phmap.h
index b41403c..5281eb4 100644
--- a/parallel_hashmap/phmap.h
+++ b/parallel_hashmap/phmap.h
@@ -2578,8 +2578,7 @@ protected:
     {
         bool operator==(const Inner& o) const
         {
-            MutexLock_ m1(const_cast<Inner *>(this));
-            MutexLock_ m2(const_cast<Inner *>(&o)); // deadlock - use std::lock
+            phmap::scoped_lock<Mutex> l(const_cast<Inner &>(*this), const_cast<Inner &>(o));
             return set_ == o.set_;
         }