--- /dev/null
+// 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.
+
+// This file is used for debugging assertion support. The Lock class
+// is functionally a wrapper around the LockImpl class, so the only
+// real intelligence in the class is in the debugging logic.
+
+#include "include/base/cef_lock.h"
+#include "include/base/cef_logging.h"
+
+#if DCHECK_IS_ON()
+
+namespace base {
+namespace cef_internal {
+
+Lock::Lock() : lock_() {
+}
+
+Lock::~Lock() {
+ DCHECK(owning_thread_ref_.is_null());
+}
+
+void Lock::AssertAcquired() const {
+ DCHECK(owning_thread_ref_ == PlatformThread::CurrentRef());
+}
+
+void Lock::CheckHeldAndUnmark() {
+ DCHECK(owning_thread_ref_ == PlatformThread::CurrentRef());
+ owning_thread_ref_ = PlatformThreadRef();
+}
+
+void Lock::CheckUnheldAndMark() {
+ // Hitting this DCHECK means that your code is trying to re-enter a lock that
+ // is already held. The Chromium Lock implementation is not reentrant.
+ // See "Why can the holder of a Lock not reacquire it?" at
+ // http://www.chromium.org/developers/lock-and-condition-variable for more
+ // information.
+ DCHECK(owning_thread_ref_.is_null());
+ owning_thread_ref_ = PlatformThread::CurrentRef();
+}
+
+} // namespace cef_internal
+} // namespace base
+
+#endif // DCHECK_IS_ON()