1 files changed, 23 insertions, 0 deletions
diff --git a/ipc/chromium/src/base/lock_impl_win.cc b/ipc/chromium/src/base/lock_impl_win.cc
new file mode 100644
index 0000000000..fc16b3a464
--- /dev/null
+++ b/ipc/chromium/src/base/lock_impl_win.cc
@@ -0,0 +1,23 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+// 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/lock_impl.h"
+
+namespace base {
+namespace internal {
+
+LockImpl::LockImpl() : native_handle_(SRWLOCK_INIT) {}
+
+LockImpl::~LockImpl() = default;
+
+bool LockImpl::Try() { return !!::TryAcquireSRWLockExclusive(&native_handle_); }
+
+void LockImpl::Lock() { ::AcquireSRWLockExclusive(&native_handle_); }
+
+void LockImpl::Unlock() { ::ReleaseSRWLockExclusive(&native_handle_); }
+
+}  // namespace internal
+}  // namespace base