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Side by Side Diff: base/bind_helpers.h

Issue 1538743002: Switch to standard integer types in base/. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: DEPS roll too Created 4 years, 12 months ago
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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 // This defines a set of argument wrappers and related factory methods that 5 // This defines a set of argument wrappers and related factory methods that
6 // can be used specify the refcounting and reference semantics of arguments 6 // can be used specify the refcounting and reference semantics of arguments
7 // that are bound by the Bind() function in base/bind.h. 7 // that are bound by the Bind() function in base/bind.h.
8 // 8 //
9 // It also defines a set of simple functions and utilities that people want 9 // It also defines a set of simple functions and utilities that people want
10 // when using Callback<> and Bind(). 10 // when using Callback<> and Bind().
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136 // 136 //
137 // DoNothing() - Useful for creating a Closure that does nothing when called. 137 // DoNothing() - Useful for creating a Closure that does nothing when called.
138 // DeletePointer<T>() - Useful for creating a Closure that will delete a 138 // DeletePointer<T>() - Useful for creating a Closure that will delete a
139 // pointer when invoked. Only use this when necessary. 139 // pointer when invoked. Only use this when necessary.
140 // In most cases MessageLoop::DeleteSoon() is a better 140 // In most cases MessageLoop::DeleteSoon() is a better
141 // fit. 141 // fit.
142 142
143 #ifndef BASE_BIND_HELPERS_H_ 143 #ifndef BASE_BIND_HELPERS_H_
144 #define BASE_BIND_HELPERS_H_ 144 #define BASE_BIND_HELPERS_H_
145 145
146 #include <stddef.h>
147
146 #include <type_traits> 148 #include <type_traits>
147 #include <utility> 149 #include <utility>
148 150
149 #include "base/basictypes.h"
150 #include "base/callback.h" 151 #include "base/callback.h"
151 #include "base/memory/weak_ptr.h" 152 #include "base/memory/weak_ptr.h"
152 #include "base/template_util.h" 153 #include "base/template_util.h"
154 #include "build/build_config.h"
153 155
154 namespace base { 156 namespace base {
155 namespace internal { 157 namespace internal {
156 158
157 // Use the Substitution Failure Is Not An Error (SFINAE) trick to inspect T 159 // Use the Substitution Failure Is Not An Error (SFINAE) trick to inspect T
158 // for the existence of AddRef() and Release() functions of the correct 160 // for the existence of AddRef() and Release() functions of the correct
159 // signature. 161 // signature.
160 // 162 //
161 // http://en.wikipedia.org/wiki/Substitution_failure_is_not_an_error 163 // http://en.wikipedia.org/wiki/Substitution_failure_is_not_an_error
162 // http://stackoverflow.com/questions/257288/is-it-possible-to-write-a-c-templat e-to-check-for-a-functions-existence 164 // http://stackoverflow.com/questions/257288/is-it-possible-to-write-a-c-templat e-to-check-for-a-functions-existence
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647 BASE_EXPORT void DoNothing(); 649 BASE_EXPORT void DoNothing();
648 650
649 template<typename T> 651 template<typename T>
650 void DeletePointer(T* obj) { 652 void DeletePointer(T* obj) {
651 delete obj; 653 delete obj;
652 } 654 }
653 655
654 } // namespace base 656 } // namespace base
655 657
656 #endif // BASE_BIND_HELPERS_H_ 658 #endif // BASE_BIND_HELPERS_H_
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