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Side by Side Diff: mojo/public/cpp/bindings/associated_interface_ptr.h

Issue 2038273002: Remove base/move.h (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: is_constructible Created 4 years, 6 months ago
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1 // Copyright 2015 The Chromium Authors. All rights reserved. 1 // Copyright 2015 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 MOJO_PUBLIC_CPP_BINDINGS_ASSOCIATED_INTERFACE_PTR_H_ 5 #ifndef MOJO_PUBLIC_CPP_BINDINGS_ASSOCIATED_INTERFACE_PTR_H_
6 #define MOJO_PUBLIC_CPP_BINDINGS_ASSOCIATED_INTERFACE_PTR_H_ 6 #define MOJO_PUBLIC_CPP_BINDINGS_ASSOCIATED_INTERFACE_PTR_H_
7 7
8 #include <stdint.h> 8 #include <stdint.h>
9 #include <utility> 9 #include <utility>
10 10
11 #include "base/logging.h" 11 #include "base/logging.h"
12 #include "base/macros.h" 12 #include "base/macros.h"
13 #include "base/memory/ref_counted.h" 13 #include "base/memory/ref_counted.h"
14 #include "base/single_thread_task_runner.h" 14 #include "base/single_thread_task_runner.h"
15 #include "base/threading/thread_task_runner_handle.h" 15 #include "base/threading/thread_task_runner_handle.h"
16 #include "mojo/public/cpp/bindings/associated_group.h" 16 #include "mojo/public/cpp/bindings/associated_group.h"
17 #include "mojo/public/cpp/bindings/associated_interface_ptr_info.h" 17 #include "mojo/public/cpp/bindings/associated_interface_ptr_info.h"
18 #include "mojo/public/cpp/bindings/associated_interface_request.h" 18 #include "mojo/public/cpp/bindings/associated_interface_request.h"
19 #include "mojo/public/cpp/bindings/callback.h" 19 #include "mojo/public/cpp/bindings/callback.h"
20 #include "mojo/public/cpp/bindings/lib/associated_interface_ptr_state.h" 20 #include "mojo/public/cpp/bindings/lib/associated_interface_ptr_state.h"
21 21
22 namespace mojo { 22 namespace mojo {
23 23
24 // Represents the client side of an associated interface. It is similar to 24 // Represents the client side of an associated interface. It is similar to
25 // InterfacePtr, except that it doesn't own a message pipe handle. 25 // InterfacePtr, except that it doesn't own a message pipe handle.
26 template <typename Interface> 26 template <typename Interface>
27 class AssociatedInterfacePtr { 27 class AssociatedInterfacePtr {
28 DISALLOW_COPY_AND_ASSIGN_WITH_MOVE_FOR_BIND(AssociatedInterfacePtr)
29
30 public: 28 public:
31 // Constructs an unbound AssociatedInterfacePtr. 29 // Constructs an unbound AssociatedInterfacePtr.
32 AssociatedInterfacePtr() {} 30 AssociatedInterfacePtr() {}
33 AssociatedInterfacePtr(decltype(nullptr)) {} 31 AssociatedInterfacePtr(decltype(nullptr)) {}
34 32
35 AssociatedInterfacePtr(AssociatedInterfacePtr&& other) { 33 AssociatedInterfacePtr(AssociatedInterfacePtr&& other) {
36 internal_state_.Swap(&other.internal_state_); 34 internal_state_.Swap(&other.internal_state_);
37 } 35 }
38 36
39 AssociatedInterfacePtr& operator=(AssociatedInterfacePtr&& other) { 37 AssociatedInterfacePtr& operator=(AssociatedInterfacePtr&& other) {
(...skipping 110 matching lines...) Expand 10 before | Expand all | Expand 10 after
150 } 148 }
151 149
152 // DO NOT USE. Exposed only for internal use and for testing. 150 // DO NOT USE. Exposed only for internal use and for testing.
153 internal::AssociatedInterfacePtrState<Interface>* internal_state() { 151 internal::AssociatedInterfacePtrState<Interface>* internal_state() {
154 return &internal_state_; 152 return &internal_state_;
155 } 153 }
156 154
157 // Allow AssociatedInterfacePtr<> to be used in boolean expressions, but not 155 // Allow AssociatedInterfacePtr<> to be used in boolean expressions, but not
158 // implicitly convertible to a real bool (which is dangerous). 156 // implicitly convertible to a real bool (which is dangerous).
159 private: 157 private:
158 // TODO(dcheng): Use an explicit conversion operator.
160 typedef internal::AssociatedInterfacePtrState<Interface> 159 typedef internal::AssociatedInterfacePtrState<Interface>
161 AssociatedInterfacePtr::*Testable; 160 AssociatedInterfacePtr::*Testable;
162 161
163 public: 162 public:
164 operator Testable() const { 163 operator Testable() const {
165 return internal_state_.is_bound() ? &AssociatedInterfacePtr::internal_state_ 164 return internal_state_.is_bound() ? &AssociatedInterfacePtr::internal_state_
166 : nullptr; 165 : nullptr;
167 } 166 }
168 167
169 private: 168 private:
170 // Forbid the == and != operators explicitly, otherwise AssociatedInterfacePtr 169 // Forbid the == and != operators explicitly, otherwise AssociatedInterfacePtr
171 // will be converted to Testable to do == or != comparison. 170 // will be converted to Testable to do == or != comparison.
172 template <typename T> 171 template <typename T>
173 bool operator==(const AssociatedInterfacePtr<T>& other) const = delete; 172 bool operator==(const AssociatedInterfacePtr<T>& other) const = delete;
174 template <typename T> 173 template <typename T>
175 bool operator!=(const AssociatedInterfacePtr<T>& other) const = delete; 174 bool operator!=(const AssociatedInterfacePtr<T>& other) const = delete;
176 175
177 typedef internal::AssociatedInterfacePtrState<Interface> State; 176 typedef internal::AssociatedInterfacePtrState<Interface> State;
178 mutable State internal_state_; 177 mutable State internal_state_;
178
179 DISALLOW_COPY_AND_ASSIGN(AssociatedInterfacePtr);
179 }; 180 };
180 181
181 // Creates an associated interface. The output |ptr| should be used locally 182 // Creates an associated interface. The output |ptr| should be used locally
182 // while the returned request should be passed through the message pipe endpoint 183 // while the returned request should be passed through the message pipe endpoint
183 // referred to by |associated_group| to setup the corresponding asssociated 184 // referred to by |associated_group| to setup the corresponding asssociated
184 // interface implementation at the remote side. 185 // interface implementation at the remote side.
185 // 186 //
186 // NOTE: |ptr| should NOT be used to make calls before the request is sent. 187 // NOTE: |ptr| should NOT be used to make calls before the request is sent.
187 // Violating that will cause the message pipe to be closed. On the other hand, 188 // Violating that will cause the message pipe to be closed. On the other hand,
188 // as soon as the request is sent, |ptr| is usable. There is no need to wait 189 // as soon as the request is sent, |ptr| is usable. There is no need to wait
189 // until the request is bound to an implementation at the remote side. 190 // until the request is bound to an implementation at the remote side.
190 template <typename Interface> 191 template <typename Interface>
191 AssociatedInterfaceRequest<Interface> GetProxy( 192 AssociatedInterfaceRequest<Interface> GetProxy(
192 AssociatedInterfacePtr<Interface>* ptr, 193 AssociatedInterfacePtr<Interface>* ptr,
193 AssociatedGroup* group, 194 AssociatedGroup* group,
194 scoped_refptr<base::SingleThreadTaskRunner> runner = 195 scoped_refptr<base::SingleThreadTaskRunner> runner =
195 base::ThreadTaskRunnerHandle::Get()) { 196 base::ThreadTaskRunnerHandle::Get()) {
196 AssociatedInterfaceRequest<Interface> request; 197 AssociatedInterfaceRequest<Interface> request;
197 AssociatedInterfacePtrInfo<Interface> ptr_info; 198 AssociatedInterfacePtrInfo<Interface> ptr_info;
198 group->CreateAssociatedInterface(AssociatedGroup::WILL_PASS_REQUEST, 199 group->CreateAssociatedInterface(AssociatedGroup::WILL_PASS_REQUEST,
199 &ptr_info, &request); 200 &ptr_info, &request);
200 201
201 ptr->Bind(std::move(ptr_info), std::move(runner)); 202 ptr->Bind(std::move(ptr_info), std::move(runner));
202 return request; 203 return request;
203 } 204 }
204 205
205 } // namespace mojo 206 } // namespace mojo
206 207
207 #endif // MOJO_PUBLIC_CPP_BINDINGS_ASSOCIATED_INTERFACE_PTR_H_ 208 #endif // MOJO_PUBLIC_CPP_BINDINGS_ASSOCIATED_INTERFACE_PTR_H_
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