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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "base/memory/ref_counted.h" | 5 #include "base/memory/ref_counted.h" |
6 | |
6 #include "base/threading/thread_collision_warner.h" | 7 #include "base/threading/thread_collision_warner.h" |
7 | 8 |
8 namespace base { | 9 namespace base { |
10 namespace { | |
11 | |
12 #if DCHECK_IS_ON() | |
13 AtomicRefCount g_cross_thread_ref_count_access_allow_count = 0; | |
14 #endif | |
15 | |
16 } // namespace | |
9 | 17 |
10 namespace subtle { | 18 namespace subtle { |
11 | 19 |
12 bool RefCountedThreadSafeBase::HasOneRef() const { | 20 bool RefCountedThreadSafeBase::HasOneRef() const { |
13 return AtomicRefCountIsOne( | 21 return AtomicRefCountIsOne( |
14 &const_cast<RefCountedThreadSafeBase*>(this)->ref_count_); | 22 &const_cast<RefCountedThreadSafeBase*>(this)->ref_count_); |
15 } | 23 } |
16 | 24 |
17 RefCountedThreadSafeBase::RefCountedThreadSafeBase() : ref_count_(0) { | 25 RefCountedThreadSafeBase::RefCountedThreadSafeBase() : ref_count_(0) { |
18 #if DCHECK_IS_ON() | 26 #if DCHECK_IS_ON() |
(...skipping 22 matching lines...) Expand all Loading... | |
41 #endif | 49 #endif |
42 if (!AtomicRefCountDec(&ref_count_)) { | 50 if (!AtomicRefCountDec(&ref_count_)) { |
43 #if DCHECK_IS_ON() | 51 #if DCHECK_IS_ON() |
44 in_dtor_ = true; | 52 in_dtor_ = true; |
45 #endif | 53 #endif |
46 return true; | 54 return true; |
47 } | 55 } |
48 return false; | 56 return false; |
49 } | 57 } |
50 | 58 |
59 #if DCHECK_IS_ON() | |
60 bool RefCountedBase::CalledOnValidSequence() const { | |
61 return !AtomicRefCountIsZero(&g_cross_thread_ref_count_access_allow_count) || | |
62 sequence_checker_.CalledOnValidSequence(); | |
gab
2017/02/17 21:10:40
Flip these (i.e. sequence check || exception).
tzik
2017/02/21 06:15:02
Done.
| |
63 } | |
64 #endif | |
65 | |
51 } // namespace subtle | 66 } // namespace subtle |
52 | 67 |
68 #if DCHECK_IS_ON() | |
69 ScopedAllowCrossThreadRefCountAccess::ScopedAllowCrossThreadRefCountAccess() { | |
70 AtomicRefCountInc(&g_cross_thread_ref_count_access_allow_count); | |
71 } | |
72 | |
73 ScopedAllowCrossThreadRefCountAccess::~ScopedAllowCrossThreadRefCountAccess() { | |
74 AtomicRefCountDec(&g_cross_thread_ref_count_access_allow_count); | |
75 } | |
76 #endif | |
77 | |
53 } // namespace base | 78 } // namespace base |
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