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1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2010 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 #ifndef BASE_REF_COUNTED_H_ | 5 #ifndef BASE_REF_COUNTED_H_ |
6 #define BASE_REF_COUNTED_H_ | 6 #define BASE_REF_COUNTED_H_ |
7 #pragma once | 7 #pragma once |
8 | 8 |
9 #include "base/atomic_ref_count.h" | 9 #include "base/atomic_ref_count.h" |
| 10 #include "base/base_api.h" |
10 #include "base/threading/thread_collision_warner.h" | 11 #include "base/threading/thread_collision_warner.h" |
11 | 12 |
12 namespace base { | 13 namespace base { |
13 | 14 |
14 namespace subtle { | 15 namespace subtle { |
15 | 16 |
16 class RefCountedBase { | 17 class BASE_API RefCountedBase { |
17 public: | 18 public: |
18 static bool ImplementsThreadSafeReferenceCounting() { return false; } | 19 static bool ImplementsThreadSafeReferenceCounting() { return false; } |
19 | 20 |
20 bool HasOneRef() const { return ref_count_ == 1; } | 21 bool HasOneRef() const { return ref_count_ == 1; } |
21 | 22 |
22 protected: | 23 protected: |
23 RefCountedBase(); | 24 RefCountedBase(); |
24 ~RefCountedBase(); | 25 ~RefCountedBase(); |
25 | 26 |
26 void AddRef() const; | 27 void AddRef() const; |
27 | 28 |
28 // Returns true if the object should self-delete. | 29 // Returns true if the object should self-delete. |
29 bool Release() const; | 30 bool Release() const; |
30 | 31 |
31 private: | 32 private: |
32 mutable int ref_count_; | 33 mutable int ref_count_; |
33 #ifndef NDEBUG | 34 #ifndef NDEBUG |
34 mutable bool in_dtor_; | 35 mutable bool in_dtor_; |
35 #endif | 36 #endif |
36 | 37 |
37 DFAKE_MUTEX(add_release_); | 38 DFAKE_MUTEX(add_release_); |
38 | 39 |
39 DISALLOW_COPY_AND_ASSIGN(RefCountedBase); | 40 DISALLOW_COPY_AND_ASSIGN(RefCountedBase); |
40 }; | 41 }; |
41 | 42 |
42 class RefCountedThreadSafeBase { | 43 class BASE_API RefCountedThreadSafeBase { |
43 public: | 44 public: |
44 static bool ImplementsThreadSafeReferenceCounting() { return true; } | 45 static bool ImplementsThreadSafeReferenceCounting() { return true; } |
45 | 46 |
46 bool HasOneRef() const; | 47 bool HasOneRef() const; |
47 | 48 |
48 protected: | 49 protected: |
49 RefCountedThreadSafeBase(); | 50 RefCountedThreadSafeBase(); |
50 ~RefCountedThreadSafeBase(); | 51 ~RefCountedThreadSafeBase(); |
51 | 52 |
52 void AddRef() const; | 53 void AddRef() const; |
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289 }; | 290 }; |
290 | 291 |
291 // Handy utility for creating a scoped_refptr<T> out of a T* explicitly without | 292 // Handy utility for creating a scoped_refptr<T> out of a T* explicitly without |
292 // having to retype all the template arguments | 293 // having to retype all the template arguments |
293 template <typename T> | 294 template <typename T> |
294 scoped_refptr<T> make_scoped_refptr(T* t) { | 295 scoped_refptr<T> make_scoped_refptr(T* t) { |
295 return scoped_refptr<T>(t); | 296 return scoped_refptr<T>(t); |
296 } | 297 } |
297 | 298 |
298 #endif // BASE_REF_COUNTED_H_ | 299 #endif // BASE_REF_COUNTED_H_ |
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