| // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 
 | // Use of this source code is governed by a BSD-style license that can be | 
 | // found in the LICENSE file. | 
 |  | 
 | #include "base/synchronization/lock_impl.h" | 
 |  | 
 | #include <windows.h> | 
 |  | 
 | namespace base { | 
 | namespace internal { | 
 |  | 
 | LockImpl::LockImpl() : native_handle_(SRWLOCK_INIT) {} | 
 |  | 
 | LockImpl::~LockImpl() = default; | 
 |  | 
 | bool LockImpl::Try() { | 
 |   return !!::TryAcquireSRWLockExclusive( | 
 |       reinterpret_cast<PSRWLOCK>(&native_handle_)); | 
 | } | 
 |  | 
 | void LockImpl::Lock() { | 
 |   ::AcquireSRWLockExclusive(reinterpret_cast<PSRWLOCK>(&native_handle_)); | 
 | } | 
 |  | 
 | }  // namespace internal | 
 | }  // namespace base |