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1 // Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 #ifndef VM_MESSAGE_HANDLER_H_ | 5 #ifndef VM_MESSAGE_HANDLER_H_ |
6 #define VM_MESSAGE_HANDLER_H_ | 6 #define VM_MESSAGE_HANDLER_H_ |
7 | 7 |
8 #include "vm/isolate.h" | 8 #include "vm/isolate.h" |
9 #include "vm/message.h" | 9 #include "vm/message.h" |
10 #include "vm/os_thread.h" | 10 #include "vm/os_thread.h" |
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74 return pause_on_start_; | 74 return pause_on_start_; |
75 } | 75 } |
76 | 76 |
77 void set_pause_on_start(bool pause_on_start) { | 77 void set_pause_on_start(bool pause_on_start) { |
78 pause_on_start_ = pause_on_start; | 78 pause_on_start_ = pause_on_start; |
79 } | 79 } |
80 | 80 |
81 bool paused_on_start() const { | 81 bool paused_on_start() const { |
82 // If pause_on_start_ is still set, tell the user we are paused, | 82 // If pause_on_start_ is still set, tell the user we are paused, |
83 // even if we haven't hit the pause point yet. | 83 // even if we haven't hit the pause point yet. |
84 return pause_on_start_; | 84 return paused_on_start_; |
85 } | 85 } |
86 | 86 |
87 bool pause_on_exit() const { | 87 bool pause_on_exit() const { |
88 return pause_on_exit_; | 88 return pause_on_exit_; |
89 } | 89 } |
90 | 90 |
91 void set_pause_on_exit(bool pause_on_exit) { | 91 void set_pause_on_exit(bool pause_on_exit) { |
92 pause_on_exit_ = pause_on_exit; | 92 pause_on_exit_ = pause_on_exit; |
93 } | 93 } |
94 | 94 |
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137 // ------------ END PortMap API ------------ | 137 // ------------ END PortMap API ------------ |
138 | 138 |
139 // Custom message notification. Optionally provided by subclass. | 139 // Custom message notification. Optionally provided by subclass. |
140 virtual void MessageNotify(Message::Priority priority); | 140 virtual void MessageNotify(Message::Priority priority); |
141 | 141 |
142 // Handles a single message. Provided by subclass. | 142 // Handles a single message. Provided by subclass. |
143 // | 143 // |
144 // Returns true on success. | 144 // Returns true on success. |
145 virtual bool HandleMessage(Message* message) = 0; | 145 virtual bool HandleMessage(Message* message) = 0; |
146 | 146 |
| 147 virtual void NotifyPauseOnStart() {} |
| 148 virtual void NotifyPauseOnExit() {} |
| 149 |
147 private: | 150 private: |
148 friend class PortMap; | 151 friend class PortMap; |
149 friend class MessageHandlerTestPeer; | 152 friend class MessageHandlerTestPeer; |
150 friend class MessageHandlerTask; | 153 friend class MessageHandlerTask; |
151 | 154 |
152 // Called by MessageHandlerTask to process our task queue. | 155 // Called by MessageHandlerTask to process our task queue. |
153 void TaskCallback(); | 156 void TaskCallback(); |
154 | 157 |
155 // Dequeue the next message. Prefer messages from the oob_queue_ to | 158 // Dequeue the next message. Prefer messages from the oob_queue_ to |
156 // messages from the queue_. | 159 // messages from the queue_. |
157 Message* DequeueMessage(Message::Priority min_priority); | 160 Message* DequeueMessage(Message::Priority min_priority); |
158 | 161 |
159 // Handles any pending messages. | 162 // Handles any pending messages. |
160 bool HandleMessages(bool allow_normal_messages, | 163 bool HandleMessages(bool allow_normal_messages, |
161 bool allow_multiple_normal_messages); | 164 bool allow_multiple_normal_messages); |
162 | 165 |
163 Monitor monitor_; // Protects all fields in MessageHandler. | 166 Monitor monitor_; // Protects all fields in MessageHandler. |
164 MessageQueue* queue_; | 167 MessageQueue* queue_; |
165 MessageQueue* oob_queue_; | 168 MessageQueue* oob_queue_; |
166 intptr_t live_ports_; // The number of open ports, including control ports. | 169 intptr_t live_ports_; // The number of open ports, including control ports. |
167 intptr_t paused_; // The number of pause messages received. | 170 intptr_t paused_; // The number of pause messages received. |
168 bool pause_on_start_; | 171 bool pause_on_start_; |
169 bool pause_on_exit_; | 172 bool pause_on_exit_; |
| 173 bool paused_on_start_; |
170 bool paused_on_exit_; | 174 bool paused_on_exit_; |
171 ThreadPool* pool_; | 175 ThreadPool* pool_; |
172 ThreadPool::Task* task_; | 176 ThreadPool::Task* task_; |
173 StartCallback start_callback_; | 177 StartCallback start_callback_; |
174 EndCallback end_callback_; | 178 EndCallback end_callback_; |
175 CallbackData callback_data_; | 179 CallbackData callback_data_; |
176 | 180 |
177 DISALLOW_COPY_AND_ASSIGN(MessageHandler); | 181 DISALLOW_COPY_AND_ASSIGN(MessageHandler); |
178 }; | 182 }; |
179 | 183 |
180 } // namespace dart | 184 } // namespace dart |
181 | 185 |
182 #endif // VM_MESSAGE_HANDLER_H_ | 186 #endif // VM_MESSAGE_HANDLER_H_ |
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