From 3c4a013ff85c5ff329c7270094f31881629b3581 Mon Sep 17 00:00:00 2001
From: Caren Thomas <carenthomas@fb.com>
Date: Fri, 17 Jun 2016 11:24:54 -0700
Subject: [PATCH] Add very basic compatibility with folly locks for
 synchronized

Summary: Add folly locks to the HasLockUnlock struct so that they can be used inside Synchronized. acquireReadWrite() and releaseReadWrite() functions are added to each lock class so that their .lock and .unlock methods are accessible by Synchronized. These changes allow an extremely basic level of compatibility for the purpose of running benchmarks and so compatibility with dual_locking, etc. have not been tested.

Reviewed By: simpkins

Differential Revision: D3434621

fbshipit-source-id: d55cffbb1eccaf23645384b9a41f85c5df593ffe
---
 folly/SpinLock.h                | 9 +++++++++
 folly/test/SynchronizedTest.cpp | 4 +++-
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/folly/SpinLock.h b/folly/SpinLock.h
index 6d10df4a..5ab44605 100644
--- a/folly/SpinLock.h
+++ b/folly/SpinLock.h
@@ -32,6 +32,8 @@
 
 #pragma once
 
+#include <type_traits>
+
 #include <folly/detail/SpinLockImpl.h>
 
 namespace folly {
@@ -62,4 +64,11 @@ class SpinLockGuardImpl : private boost::noncopyable {
 
 typedef SpinLockGuardImpl<SpinLock> SpinLockGuard;
 
+namespace detail {
+template <class T>
+struct HasLockUnlock;
+
+template <>
+struct HasLockUnlock<folly::SpinLock> : public std::true_type {};
+}
 }
diff --git a/folly/test/SynchronizedTest.cpp b/folly/test/SynchronizedTest.cpp
index dd97d28c..375b0c16 100644
--- a/folly/test/SynchronizedTest.cpp
+++ b/folly/test/SynchronizedTest.cpp
@@ -19,9 +19,10 @@
 // Test bed for folly/Synchronized.h
 
 #include <folly/Portability.h>
-#include <folly/Synchronized.h>
 #include <folly/RWSpinLock.h>
 #include <folly/SharedMutex.h>
+#include <folly/SpinLock.h>
+#include <folly/Synchronized.h>
 #include <folly/test/SynchronizedTestLib.h>
 #include <gtest/gtest.h>
 
@@ -46,6 +47,7 @@ using SynchronizedTestTypes = testing::Types
   , boost::recursive_timed_mutex
 #endif
   , boost::shared_mutex
+  , folly::SpinLock
 #ifdef RW_SPINLOCK_USE_X86_INTRINSIC_
   , folly::RWTicketSpinLock32
   , folly::RWTicketSpinLock64
-- 
2.34.1