lock.cc revision 3f50c38dc070f4bb515c1b64450dae14f316474e 
1// Copyright (c) 2011 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5// This file is used for debugging assertion support.  The Lock class
6// is functionally a wrapper around the LockImpl class, so the only
7// real intelligence in the class is in the debugging logic.
8
9#if !defined(NDEBUG)
10
11#include "base/synchronization/lock.h"
12#include "base/logging.h"
13
14namespace base {
15
16Lock::Lock() : lock_() {
17  owned_by_thread_ = false;
18  owning_thread_id_ = static_cast<PlatformThreadId>(0);
19}
20
21void Lock::AssertAcquired() const {
22  DCHECK(owned_by_thread_);
23  DCHECK_EQ(owning_thread_id_, PlatformThread::CurrentId());
24}
25
26void Lock::CheckHeldAndUnmark() {
27  DCHECK(owned_by_thread_);
28  DCHECK_EQ(owning_thread_id_, PlatformThread::CurrentId());
29  owned_by_thread_ = false;
30  owning_thread_id_ = static_cast<PlatformThreadId>(0);
31}
32
33void Lock::CheckUnheldAndMark() {
34  DCHECK(!owned_by_thread_);
35  owned_by_thread_ = true;
36  owning_thread_id_ = PlatformThread::CurrentId();
37}
38
39}  // namespace base
40
41#endif  // NDEBUG
42