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1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 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 TOOLS_ANDROID_FORWARDER2_SELF_DELETER_HELPER_H_ | 5 #ifndef TOOLS_ANDROID_FORWARDER2_SELF_DELETER_HELPER_H_ |
6 #define TOOLS_ANDROID_FORWARDER2_SELF_DELETER_HELPER_H_ | 6 #define TOOLS_ANDROID_FORWARDER2_SELF_DELETER_HELPER_H_ |
7 | 7 |
8 #include "base/basictypes.h" | 8 #include "base/basictypes.h" |
9 #include "base/bind.h" | 9 #include "base/bind.h" |
10 #include "base/callback.h" | 10 #include "base/callback.h" |
11 #include "base/location.h" | 11 #include "base/location.h" |
12 #include "base/logging.h" | 12 #include "base/logging.h" |
13 #include "base/memory/ref_counted.h" | 13 #include "base/memory/ref_counted.h" |
14 #include "base/memory/scoped_ptr.h" | 14 #include "base/memory/scoped_ptr.h" |
15 #include "base/memory/weak_ptr.h" | 15 #include "base/memory/weak_ptr.h" |
16 #include "base/message_loop/message_loop_proxy.h" | |
17 | 16 |
18 namespace base { | 17 namespace base { |
19 | 18 |
20 class SingleThreadTaskRunner; | 19 class SingleThreadTaskRunner; |
21 | 20 |
22 } // namespace base | 21 } // namespace base |
23 | 22 |
24 namespace forwarder2 { | 23 namespace forwarder2 { |
25 | 24 |
26 // Helper template class to be used in the following case: | 25 // Helper template class to be used in the following case: |
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92 // scoped_ptr<Object> object_; | 91 // scoped_ptr<Object> object_; |
93 // }; | 92 // }; |
94 // | 93 // |
95 template <typename T> | 94 template <typename T> |
96 class SelfDeleterHelper { | 95 class SelfDeleterHelper { |
97 public: | 96 public: |
98 typedef base::Callback<void (scoped_ptr<T>)> DeletionCallback; | 97 typedef base::Callback<void (scoped_ptr<T>)> DeletionCallback; |
99 | 98 |
100 SelfDeleterHelper(T* self_deleting_object, | 99 SelfDeleterHelper(T* self_deleting_object, |
101 const DeletionCallback& deletion_callback) | 100 const DeletionCallback& deletion_callback) |
102 : construction_runner_(base::MessageLoopProxy::current()), | 101 : construction_runner_(base::MessageLoop::current()->task_runner()), |
103 self_deleting_object_(self_deleting_object), | 102 self_deleting_object_(self_deleting_object), |
104 deletion_callback_(deletion_callback), | 103 deletion_callback_(deletion_callback), |
105 weak_ptr_factory_(this) { | 104 weak_ptr_factory_(this) {} |
106 } | |
107 | 105 |
108 ~SelfDeleterHelper() { | 106 ~SelfDeleterHelper() { |
109 DCHECK(construction_runner_->RunsTasksOnCurrentThread()); | 107 DCHECK(construction_runner_->RunsTasksOnCurrentThread()); |
110 } | 108 } |
111 | 109 |
112 void MaybeSelfDeleteSoon() { | 110 void MaybeSelfDeleteSoon() { |
113 DCHECK(!construction_runner_->RunsTasksOnCurrentThread()); | 111 DCHECK(!construction_runner_->RunsTasksOnCurrentThread()); |
114 construction_runner_->PostTask( | 112 construction_runner_->PostTask( |
115 FROM_HERE, | 113 FROM_HERE, |
116 base::Bind(&SelfDeleterHelper::SelfDelete, | 114 base::Bind(&SelfDeleterHelper::SelfDelete, |
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132 // that any WeakPtrs to Controller are invalidated before its members | 130 // that any WeakPtrs to Controller are invalidated before its members |
133 // variable's destructors are executed, rendering them invalid. | 131 // variable's destructors are executed, rendering them invalid. |
134 base::WeakPtrFactory<SelfDeleterHelper<T> > weak_ptr_factory_; | 132 base::WeakPtrFactory<SelfDeleterHelper<T> > weak_ptr_factory_; |
135 | 133 |
136 DISALLOW_COPY_AND_ASSIGN(SelfDeleterHelper); | 134 DISALLOW_COPY_AND_ASSIGN(SelfDeleterHelper); |
137 }; | 135 }; |
138 | 136 |
139 } // namespace forwarder2 | 137 } // namespace forwarder2 |
140 | 138 |
141 #endif // TOOLS_ANDROID_FORWARDER2_SELF_DELETER_HELPER_H_ | 139 #endif // TOOLS_ANDROID_FORWARDER2_SELF_DELETER_HELPER_H_ |
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